diff --git a/HISTORY.md b/HISTORY.md index 732ec19e..d26ffd66 100644 --- a/HISTORY.md +++ b/HISTORY.md @@ -7,11 +7,10 @@ http://visjs.org ### Timeline - Implemented functions `on` and `off` to create event listeners for events - `rangechange` and `rangechanged`. + `rangechange`, `rangechanged`, and `select`. - Impelmented function `select` to get and set the selected items. - Items can be selected by clicking them, muti-select by holding them. - ### Graph - Fixed longstanding bug in the force calculation, increasing simulation @@ -25,8 +24,10 @@ http://visjs.org - Added local declustering to Graph, freezing the simulation of nodes outside of the cluster. - Added support for key-bindings by including mouseTrap in Graph. -- Added node-based navigation GUI. -- Added keyboard navigation option. +- Added navigation controls. +- Added keyboard navigation. +- Implemented functions `on` and `off` to create event listeners for event + `select`. ## 2014-01-14, version 0.3.0 diff --git a/docs/graph.html b/docs/graph.html index f920b521..8dfe2594 100644 --- a/docs/graph.html +++ b/docs/graph.html @@ -1384,6 +1384,33 @@ var options: { Description + + getSelection() + Array of ids + Returns an array with the ids of the selected nodes. + Returns an empty array if no nodes are selected. + The selections are not ordered. + + + + + on(event, callback) + none + Create an event listener. The callback function is invoked every time the event is triggered. Avialable events: select. The callback function is invoked as callback(properties), where properties is an object containing event specific properties. See section Events for more information. + + + + off(event, callback) + none + Remove an event listener created before via function on(event, callback). See section Events for more information. + + + + redraw() + none + Redraw the graph. Useful when the layout of the webpage changed. + + setData(data,[disableStart]) none @@ -1403,21 +1430,6 @@ var options: { - - getSelection() - Array of ids - Returns an array with the ids of the selected nodes. - Returns an empty array if no nodes are selected. - The selections are not ordered. - - - - - redraw() - none - Redraw the graph. Useful when the layout of the webpage changed. - - setSelection(selection) none @@ -1441,7 +1453,7 @@ var options: {

Events

- Graph fires events after one or multiple nodes are selected. + Graph fires events after one or multiple nodes are selected or deselected. The event can be catched by creating a listener.

@@ -1450,13 +1462,30 @@ var options: { 

-function onSelect() {
-  alert('selected nodes: ' + graph.getSelection());
+graph.on('select', function (properties) {
+  alert('selected nodes: ' + properties.nodes);
+});
+
+ +

+ A listener can be removed via the function off: +

+ +
+function onSelect (properties) {
+  alert('selected nodes: ' + properties.nodes);
 }
 
-vis.events.addListener(graph, 'select', onSelect);
+// add event listener
+graph.on('select', onSelect);
+
+// do stuff...
+
+// remove event listener
+graph.off('select', onSelect);
+

The following events are available.

@@ -1470,13 +1499,14 @@ vis.events.addListener(graph, 'select', onSelect); select - Fired after the user selects or unselects a node by clicking it, - or when selecting a number of nodes by dragging a selection area - around them. Not fired when the method setSelection - is executed. The ids of the selected nodes can be retrieved via the - method getSelection. + Fired after the user selects or deselects a node by clicking it. + Not fired when the method setSelectionis executed. + + + - none diff --git a/docs/timeline.html b/docs/timeline.html index e5a56310..ba3fa0a7 100644 --- a/docs/timeline.html +++ b/docs/timeline.html @@ -38,6 +38,7 @@
  • Configuration Options
  • Methods
    • +
  • Events
  • Styles
  • Data Policy
    • @@ -561,13 +562,13 @@ var options = { on(event, callback) none - Create an event listener. The callback function is invoked every time the event is triggered. Avialable events: rangechange, rangechanged, select. The callback function is invoked as callback(properties), where properties is an object containing event specific properties. + Create an event listener. The callback function is invoked every time the event is triggered. Avialable events: rangechange, rangechanged, select. The callback function is invoked as callback(properties), where properties is an object containing event specific properties. See section Events for more information. off(event, callback) none - Remove an event listener created before via function on(event, callback). + Remove an event listener created before via function on(event, callback). See section Events for more information. @@ -607,8 +608,95 @@ var options = { - +

    Events

    +

    + Timeline fires events when changing the visible window by dragging, or when + selecting items. +

    + +

    + Here an example on how to listen for a select event. +

    + +
    +timeline.on('select', function (properties) {
+  alert('selected items: ' + properties.nodes);
+});
+
    + +

    + A listener can be removed via the function off: +

    +
    +function onSelect (properties) {
+  alert('selected items: ' + properties.nodes);
+}
+
+// add event listener
+timeline.on('select', onSelect);
+
+// do stuff...
+
+// remove event listener
+timeline.off('select', onSelect);
+
    + + +

    + The following events are available. +

    + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    nameDescriptionProperties
    rangechangeFired repeatedly when the user is dragging the timeline window. + +
      +
    • start (Number): timestamp of the current start of the window.
      • +
    • end (Number): timestamp of the current end of the window.
      • +
    +
    rangechangedFired once after the user has dragging the timeline window. + +
      +
    • start (Number): timestamp of the current start of the window.
      • +
    • end (Number): timestamp of the current end of the window.
      • +
    +
    selectFired after the user selects or deselects items by tapping or holding them. + Not fired when the method setSelectionis executed. + +
      +
    • items: an array with the ids of the selected items
      • +
    +

    Styles

    diff --git a/examples/graph/02_random_nodes.html b/examples/graph/02_random_nodes.html index fdf27193..f5a05364 100755 --- a/examples/graph/02_random_nodes.html +++ b/examples/graph/02_random_nodes.html @@ -94,9 +94,8 @@ graph = new vis.Graph(container, data, options); // add event listeners - vis.events.addListener(graph, 'select', function(params) { - document.getElementById('selection').innerHTML = - 'Selection: ' + graph.getSelection(); + graph.on('select', function(params) { + document.getElementById('selection').innerHTML = 'Selection: ' + params.nodes; }); } diff --git a/examples/graph/07_selections.html b/examples/graph/07_selections.html index 25faf4c9..98e44ade 100644 --- a/examples/graph/07_selections.html +++ b/examples/graph/07_selections.html @@ -51,11 +51,9 @@ graph = new vis.Graph(container, data, options); // add event listener - function onSelect() { - document.getElementById('info').innerHTML += - 'selection: ' + graph.getSelection().join(', ') + '
    '; - } - vis.events.addListener(graph, 'select', onSelect); + graph.on('select', function(params) { + document.getElementById('info').innerHTML += 'selection: ' + params.nodes + '
    '; + }); // set initial selection (id's of some nodes) graph.setSelection([3, 4, 5]); diff --git a/examples/graph/18_fully_random_nodes_clustering.html b/examples/graph/18_fully_random_nodes_clustering.html index 3c126377..b2440b76 100644 --- a/examples/graph/18_fully_random_nodes_clustering.html +++ b/examples/graph/18_fully_random_nodes_clustering.html @@ -62,10 +62,10 @@ stabilize: false }; graph = new vis.Graph(container, data, options); + // add event listeners - vis.events.addListener(graph, 'select', function(params) { - document.getElementById('selection').innerHTML = - 'Selection: ' + graph.getSelection(); + graph.on('select', function(params) { + document.getElementById('selection').innerHTML = 'Selection: ' + params.nodes; }); } diff --git a/examples/graph/19_scale_free_graph_clustering.html b/examples/graph/19_scale_free_graph_clustering.html index 874fc21a..cced805b 100644 --- a/examples/graph/19_scale_free_graph_clustering.html +++ b/examples/graph/19_scale_free_graph_clustering.html @@ -100,9 +100,8 @@ graph = new vis.Graph(container, data, options); // add event listeners - vis.events.addListener(graph, 'select', function(params) { - document.getElementById('selection').innerHTML = - 'Selection: ' + graph.getSelection(); + graph.on('select', function(params) { + document.getElementById('selection').innerHTML = 'Selection: ' + params.nodes; }); } diff --git a/examples/graph/20_navigation.html b/examples/graph/20_navigation.html index f8bbb7cf..cc9ed615 100644 --- a/examples/graph/20_navigation.html +++ b/examples/graph/20_navigation.html @@ -116,9 +116,8 @@ graph = new vis.Graph(container, data, options); // add event listeners - vis.events.addListener(graph, 'select', function(params) { - document.getElementById('selection').innerHTML = - 'Selection: ' + graph.getSelection(); + graph.on('select', function(params) { + document.getElementById('selection').innerHTML = 'Selection: ' + params.nodes; }); } diff --git a/examples/timeline/01_basic.html b/examples/timeline/01_basic.html index 9efa0301..514eefd1 100644 --- a/examples/timeline/01_basic.html +++ b/examples/timeline/01_basic.html @@ -7,8 +7,6 @@ body, html { font-family: sans-serif; } - - diff --git a/src/graph/Graph.js b/src/graph/Graph.js index c0841d8d..7d81240e 100644 --- a/src/graph/Graph.js +++ b/src/graph/Graph.js @@ -491,6 +491,33 @@ Graph.prototype.setOptions = function (options) { this._redraw(); }; +/** + * Add event listener + * @param {String} event Event name. Available events: + * 'select' + * @param {function} callback Callback function, invoked as callback(properties) + * where properties is an optional object containing + * event specific properties. + */ +Graph.prototype.on = function on (event, callback) { + var available = ['select']; + + if (available.indexOf(event) == -1) { + throw new Error('Unknown event "' + event + '". Choose from ' + available.join()); + } + + events.addListener(this, event, callback); +}; + +/** + * Remove an event listener + * @param {String} event Event name + * @param {function} callback Callback function + */ +Graph.prototype.off = function off (event, callback) { + events.removeListener(this, event, callback); +}; + /** * fire an event * @param {String} event The name of an event, for example 'select' diff --git a/src/graph/SelectionMixin.js b/src/graph/SelectionMixin.js index eb1f99e7..203ae6ac 100644 --- a/src/graph/SelectionMixin.js +++ b/src/graph/SelectionMixin.js @@ -183,7 +183,9 @@ var SelectionMixin = { this.selectionObj = {}; if (doNotTrigger == false) { - this._trigger('select'); + this._trigger('select', { + nodes: this.getSelection() + }); } }, @@ -232,7 +234,9 @@ var SelectionMixin = { this._removeFromSelection(node); } if (doNotTrigger == false) { - this._trigger('select'); + this._trigger('select', { + nodes: this.getSelection() + }); } }, @@ -439,7 +443,9 @@ var SelectionMixin = { if (changed && (triggerSelect == true || triggerSelect == undefined)) { // fire the select event - this._trigger('select'); + this._trigger('select', { + nodes: this.getSelection() + }); } return changed; @@ -495,7 +501,9 @@ var SelectionMixin = { if (changed) { // fire the select event - this._trigger('select'); + this._trigger('select', { + nodes: this.getSelection() + }); } return changed; diff --git a/src/util.js b/src/util.js index efc6dd31..9036691e 100644 --- a/src/util.js +++ b/src/util.js @@ -671,30 +671,3 @@ util.option.asElement = function (value, defaultValue) { return value || defaultValue || null; }; - - -/** - * Compare two numbers and return the lowest, non-negative number. - * - * @param {number} number1 - * @param {number} number2 - * @returns {number} | number1 or number2, the lowest positive number. If both negative, return -1 - */ -util.getLowestPositiveNumber = function(number1,number2) { - if (number1 >= 0) { - if (number2 >= 0) { - return (number1 < number2) ? number1 : number2; - } - else { - return number1; - } - } - else { - if (number2 >= 0) { - return number2; - } - else { - return -1; - } - } -} diff --git a/vis.js.tmp b/vis.js.tmp deleted file mode 100644 index 17b0926a..00000000 --- a/vis.js.tmp +++ /dev/null @@ -1,11964 +0,0 @@ -/** - * vis.js module imports - */ - -// Try to load dependencies from the global window object. -// If not available there, load via require. -var moment = (typeof window !== 'undefined') && window['moment'] || require('moment'); - -var Hammer; -if (typeof window !== 'undefined') { - // load hammer.js only when running in a browser (where window is available) - Hammer = window['Hammer'] || require('hammerjs'); -} -else { - Hammer = function () { - throw Error('hammer.js is only available in a browser, not in node.js.'); - } -} - - -// Internet Explorer 8 and older does not support Array.indexOf, so we define -// it here in that case. -// http://soledadpenades.com/2007/05/17/arrayindexof-in-internet-explorer/ -if(!Array.prototype.indexOf) { - Array.prototype.indexOf = function(obj){ - for(var i = 0; i < this.length; i++){ - if(this[i] == obj){ - return i; - } - } - return -1; - }; - - try { - console.log("Warning: Ancient browser detected. Please update your browser"); - } - catch (err) { - } -} - -// Internet Explorer 8 and older does not support Array.forEach, so we define -// it here in that case. -// https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Array/forEach -if (!Array.prototype.forEach) { - Array.prototype.forEach = function(fn, scope) { - for(var i = 0, len = this.length; i < len; ++i) { - fn.call(scope || this, this[i], i, this); - } - } -} - -// Internet Explorer 8 and older does not support Array.map, so we define it -// here in that case. -// https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Array/map -// Production steps of ECMA-262, Edition 5, 15.4.4.19 -// Reference: http://es5.github.com/#x15.4.4.19 -if (!Array.prototype.map) { - Array.prototype.map = function(callback, thisArg) { - - var T, A, k; - - if (this == null) { - throw new TypeError(" this is null or not defined"); - } - - // 1. Let O be the result of calling ToObject passing the |this| value as the argument. - var O = Object(this); - - // 2. Let lenValue be the result of calling the Get internal method of O with the argument "length". - // 3. Let len be ToUint32(lenValue). - var len = O.length >>> 0; - - // 4. If IsCallable(callback) is false, throw a TypeError exception. - // See: http://es5.github.com/#x9.11 - if (typeof callback !== "function") { - throw new TypeError(callback + " is not a function"); - } - - // 5. If thisArg was supplied, let T be thisArg; else let T be undefined. - if (thisArg) { - T = thisArg; - } - - // 6. Let A be a new array created as if by the expression new Array(len) where Array is - // the standard built-in constructor with that name and len is the value of len. - A = new Array(len); - - // 7. Let k be 0 - k = 0; - - // 8. Repeat, while k < len - while(k < len) { - - var kValue, mappedValue; - - // a. Let Pk be ToString(k). - // This is implicit for LHS operands of the in operator - // b. Let kPresent be the result of calling the HasProperty internal method of O with argument Pk. - // This step can be combined with c - // c. If kPresent is true, then - if (k in O) { - - // i. Let kValue be the result of calling the Get internal method of O with argument Pk. - kValue = O[ k ]; - - // ii. Let mappedValue be the result of calling the Call internal method of callback - // with T as the this value and argument list containing kValue, k, and O. - mappedValue = callback.call(T, kValue, k, O); - - // iii. Call the DefineOwnProperty internal method of A with arguments - // Pk, Property Descriptor {Value: mappedValue, : true, Enumerable: true, Configurable: true}, - // and false. - - // In browsers that support Object.defineProperty, use the following: - // Object.defineProperty(A, Pk, { value: mappedValue, writable: true, enumerable: true, configurable: true }); - - // For best browser support, use the following: - A[ k ] = mappedValue; - } - // d. Increase k by 1. - k++; - } - - // 9. return A - return A; - }; -} - -// Internet Explorer 8 and older does not support Array.filter, so we define it -// here in that case. -// https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Array/filter -if (!Array.prototype.filter) { - Array.prototype.filter = function(fun /*, thisp */) { - "use strict"; - - if (this == null) { - throw new TypeError(); - } - - var t = Object(this); - var len = t.length >>> 0; - if (typeof fun != "function") { - throw new TypeError(); - } - - var res = []; - var thisp = arguments[1]; - for (var i = 0; i < len; i++) { - if (i in t) { - var val = t[i]; // in case fun mutates this - if (fun.call(thisp, val, i, t)) - res.push(val); - } - } - - return res; - }; -} - - -// Internet Explorer 8 and older does not support Object.keys, so we define it -// here in that case. -// https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Object/keys -if (!Object.keys) { - Object.keys = (function () { - var hasOwnProperty = Object.prototype.hasOwnProperty, - hasDontEnumBug = !({toString: null}).propertyIsEnumerable('toString'), - dontEnums = [ - 'toString', - 'toLocaleString', - 'valueOf', - 'hasOwnProperty', - 'isPrototypeOf', - 'propertyIsEnumerable', - 'constructor' - ], - dontEnumsLength = dontEnums.length; - - return function (obj) { - if (typeof obj !== 'object' && typeof obj !== 'function' || obj === null) { - throw new TypeError('Object.keys called on non-object'); - } - - var result = []; - - for (var prop in obj) { - if (hasOwnProperty.call(obj, prop)) result.push(prop); - } - - if (hasDontEnumBug) { - for (var i=0; i < dontEnumsLength; i++) { - if (hasOwnProperty.call(obj, dontEnums[i])) result.push(dontEnums[i]); - } - } - return result; - } - })() -} - -// Internet Explorer 8 and older does not support Array.isArray, -// so we define it here in that case. -// https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Array/isArray -if(!Array.isArray) { - Array.isArray = function (vArg) { - return Object.prototype.toString.call(vArg) === "[object Array]"; - }; -} - -// Internet Explorer 8 and older does not support Function.bind, -// so we define it here in that case. -// https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Function/bind -if (!Function.prototype.bind) { - Function.prototype.bind = function (oThis) { - if (typeof this !== "function") { - // closest thing possible to the ECMAScript 5 internal IsCallable function - throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable"); - } - - var aArgs = Array.prototype.slice.call(arguments, 1), - fToBind = this, - fNOP = function () {}, - fBound = function () { - return fToBind.apply(this instanceof fNOP && oThis - ? this - : oThis, - aArgs.concat(Array.prototype.slice.call(arguments))); - }; - - fNOP.prototype = this.prototype; - fBound.prototype = new fNOP(); - - return fBound; - }; -} - -// https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Object/create -if (!Object.create) { - Object.create = function (o) { - if (arguments.length > 1) { - throw new Error('Object.create implementation only accepts the first parameter.'); - } - function F() {} - F.prototype = o; - return new F(); - }; -} - -// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind -if (!Function.prototype.bind) { - Function.prototype.bind = function (oThis) { - if (typeof this !== "function") { - // closest thing possible to the ECMAScript 5 internal IsCallable function - throw new TypeError("Function.prototype.bind - what is trying to be bound is not callable"); - } - - var aArgs = Array.prototype.slice.call(arguments, 1), - fToBind = this, - fNOP = function () {}, - fBound = function () { - return fToBind.apply(this instanceof fNOP && oThis - ? this - : oThis, - aArgs.concat(Array.prototype.slice.call(arguments))); - }; - - fNOP.prototype = this.prototype; - fBound.prototype = new fNOP(); - - return fBound; - }; -} - -/** - * utility functions - */ -var util = {}; - -/** - * Test whether given object is a number - * @param {*} object - * @return {Boolean} isNumber - */ -util.isNumber = function isNumber(object) { - return (object instanceof Number || typeof object == 'number'); -}; - -/** - * Test whether given object is a string - * @param {*} object - * @return {Boolean} isString - */ -util.isString = function isString(object) { - return (object instanceof String || typeof object == 'string'); -}; - -/** - * Test whether given object is a Date, or a String containing a Date - * @param {Date | String} object - * @return {Boolean} isDate - */ -util.isDate = function isDate(object) { - if (object instanceof Date) { - return true; - } - else if (util.isString(object)) { - // test whether this string contains a date - var match = ASPDateRegex.exec(object); - if (match) { - return true; - } - else if (!isNaN(Date.parse(object))) { - return true; - } - } - - return false; -}; - -/** - * Test whether given object is an instance of google.visualization.DataTable - * @param {*} object - * @return {Boolean} isDataTable - */ -util.isDataTable = function isDataTable(object) { - return (typeof (google) !== 'undefined') && - (google.visualization) && - (google.visualization.DataTable) && - (object instanceof google.visualization.DataTable); -}; - -/** - * Create a semi UUID - * source: http://stackoverflow.com/a/105074/1262753 - * @return {String} uuid - */ -util.randomUUID = function randomUUID () { - var S4 = function () { - return Math.floor( - Math.random() * 0x10000 /* 65536 */ - ).toString(16); - }; - - return ( - S4() + S4() + '-' + - S4() + '-' + - S4() + '-' + - S4() + '-' + - S4() + S4() + S4() - ); -}; - -/** - * Extend object a with the properties of object b or a series of objects - * Only properties with defined values are copied - * @param {Object} a - * @param {... Object} b - * @return {Object} a - */ -util.extend = function (a, b) { - for (var i = 1, len = arguments.length; i < len; i++) { - var other = arguments[i]; - for (var prop in other) { - if (other.hasOwnProperty(prop) && other[prop] !== undefined) { - a[prop] = other[prop]; - } - } - } - - return a; -}; - -/** - * Convert an object to another type - * @param {Boolean | Number | String | Date | Moment | Null | undefined} object - * @param {String | undefined} type Name of the type. Available types: - * 'Boolean', 'Number', 'String', - * 'Date', 'Moment', ISODate', 'ASPDate'. - * @return {*} object - * @throws Error - */ -util.convert = function convert(object, type) { - var match; - - if (object === undefined) { - return undefined; - } - if (object === null) { - return null; - } - - if (!type) { - return object; - } - if (!(typeof type === 'string') && !(type instanceof String)) { - throw new Error('Type must be a string'); - } - - //noinspection FallthroughInSwitchStatementJS - switch (type) { - case 'boolean': - case 'Boolean': - return Boolean(object); - - case 'number': - case 'Number': - return Number(object.valueOf()); - - case 'string': - case 'String': - return String(object); - - case 'Date': - if (util.isNumber(object)) { - return new Date(object); - } - if (object instanceof Date) { - return new Date(object.valueOf()); - } - else if (moment.isMoment(object)) { - return new Date(object.valueOf()); - } - if (util.isString(object)) { - match = ASPDateRegex.exec(object); - if (match) { - // object is an ASP date - return new Date(Number(match[1])); // parse number - } - else { - return moment(object).toDate(); // parse string - } - } - else { - throw new Error( - 'Cannot convert object of type ' + util.getType(object) + - ' to type Date'); - } - - case 'Moment': - if (util.isNumber(object)) { - return moment(object); - } - if (object instanceof Date) { - return moment(object.valueOf()); - } - else if (moment.isMoment(object)) { - return moment(object); - } - if (util.isString(object)) { - match = ASPDateRegex.exec(object); - if (match) { - // object is an ASP date - return moment(Number(match[1])); // parse number - } - else { - return moment(object); // parse string - } - } - else { - throw new Error( - 'Cannot convert object of type ' + util.getType(object) + - ' to type Date'); - } - - case 'ISODate': - if (util.isNumber(object)) { - return new Date(object); - } - else if (object instanceof Date) { - return object.toISOString(); - } - else if (moment.isMoment(object)) { - return object.toDate().toISOString(); - } - else if (util.isString(object)) { - match = ASPDateRegex.exec(object); - if (match) { - // object is an ASP date - return new Date(Number(match[1])).toISOString(); // parse number - } - else { - return new Date(object).toISOString(); // parse string - } - } - else { - throw new Error( - 'Cannot convert object of type ' + util.getType(object) + - ' to type ISODate'); - } - - case 'ASPDate': - if (util.isNumber(object)) { - return '/Date(' + object + ')/'; - } - else if (object instanceof Date) { - return '/Date(' + object.valueOf() + ')/'; - } - else if (util.isString(object)) { - match = ASPDateRegex.exec(object); - var value; - if (match) { - // object is an ASP date - value = new Date(Number(match[1])).valueOf(); // parse number - } - else { - value = new Date(object).valueOf(); // parse string - } - return '/Date(' + value + ')/'; - } - else { - throw new Error( - 'Cannot convert object of type ' + util.getType(object) + - ' to type ASPDate'); - } - - default: - throw new Error('Cannot convert object of type ' + util.getType(object) + - ' to type "' + type + '"'); - } -}; - -// parse ASP.Net Date pattern, -// for example '/Date(1198908717056)/' or '/Date(1198908717056-0700)/' -// code from http://momentjs.com/ -var ASPDateRegex = /^\/?Date\((\-?\d+)/i; - -/** - * Get the type of an object, for example util.getType([]) returns 'Array' - * @param {*} object - * @return {String} type - */ -util.getType = function getType(object) { - var type = typeof object; - - if (type == 'object') { - if (object == null) { - return 'null'; - } - if (object instanceof Boolean) { - return 'Boolean'; - } - if (object instanceof Number) { - return 'Number'; - } - if (object instanceof String) { - return 'String'; - } - if (object instanceof Array) { - return 'Array'; - } - if (object instanceof Date) { - return 'Date'; - } - return 'Object'; - } - else if (type == 'number') { - return 'Number'; - } - else if (type == 'boolean') { - return 'Boolean'; - } - else if (type == 'string') { - return 'String'; - } - - return type; -}; - -/** - * Retrieve the absolute left value of a DOM element - * @param {Element} elem A dom element, for example a div - * @return {number} left The absolute left position of this element - * in the browser page. - */ -util.getAbsoluteLeft = function getAbsoluteLeft (elem) { - var doc = document.documentElement; - var body = document.body; - - var left = elem.offsetLeft; - var e = elem.offsetParent; - while (e != null && e != body && e != doc) { - left += e.offsetLeft; - left -= e.scrollLeft; - e = e.offsetParent; - } - return left; -}; - -/** - * Retrieve the absolute top value of a DOM element - * @param {Element} elem A dom element, for example a div - * @return {number} top The absolute top position of this element - * in the browser page. - */ -util.getAbsoluteTop = function getAbsoluteTop (elem) { - var doc = document.documentElement; - var body = document.body; - - var top = elem.offsetTop; - var e = elem.offsetParent; - while (e != null && e != body && e != doc) { - top += e.offsetTop; - top -= e.scrollTop; - e = e.offsetParent; - } - return top; -}; - -/** - * Get the absolute, vertical mouse position from an event. - * @param {Event} event - * @return {Number} pageY - */ -util.getPageY = function getPageY (event) { - if ('pageY' in event) { - return event.pageY; - } - else { - var clientY; - if (('targetTouches' in event) && event.targetTouches.length) { - clientY = event.targetTouches[0].clientY; - } - else { - clientY = event.clientY; - } - - var doc = document.documentElement; - var body = document.body; - return clientY + - ( doc && doc.scrollTop || body && body.scrollTop || 0 ) - - ( doc && doc.clientTop || body && body.clientTop || 0 ); - } -}; - -/** - * Get the absolute, horizontal mouse position from an event. - * @param {Event} event - * @return {Number} pageX - */ -util.getPageX = function getPageX (event) { - if ('pageY' in event) { - return event.pageX; - } - else { - var clientX; - if (('targetTouches' in event) && event.targetTouches.length) { - clientX = event.targetTouches[0].clientX; - } - else { - clientX = event.clientX; - } - - var doc = document.documentElement; - var body = document.body; - return clientX + - ( doc && doc.scrollLeft || body && body.scrollLeft || 0 ) - - ( doc && doc.clientLeft || body && body.clientLeft || 0 ); - } -}; - -/** - * add a className to the given elements style - * @param {Element} elem - * @param {String} className - */ -util.addClassName = function addClassName(elem, className) { - var classes = elem.className.split(' '); - if (classes.indexOf(className) == -1) { - classes.push(className); // add the class to the array - elem.className = classes.join(' '); - } -}; - -/** - * add a className to the given elements style - * @param {Element} elem - * @param {String} className - */ -util.removeClassName = function removeClassname(elem, className) { - var classes = elem.className.split(' '); - var index = classes.indexOf(className); - if (index != -1) { - classes.splice(index, 1); // remove the class from the array - elem.className = classes.join(' '); - } -}; - -/** - * For each method for both arrays and objects. - * In case of an array, the built-in Array.forEach() is applied. - * In case of an Object, the method loops over all properties of the object. - * @param {Object | Array} object An Object or Array - * @param {function} callback Callback method, called for each item in - * the object or array with three parameters: - * callback(value, index, object) - */ -util.forEach = function forEach (object, callback) { - var i, - len; - if (object instanceof Array) { - // array - for (i = 0, len = object.length; i < len; i++) { - callback(object[i], i, object); - } - } - else { - // object - for (i in object) { - if (object.hasOwnProperty(i)) { - callback(object[i], i, object); - } - } - } -}; - -/** - * Update a property in an object - * @param {Object} object - * @param {String} key - * @param {*} value - * @return {Boolean} changed - */ -util.updateProperty = function updateProp (object, key, value) { - if (object[key] !== value) { - object[key] = value; - return true; - } - else { - return false; - } -}; - -/** - * Add and event listener. Works for all browsers - * @param {Element} element An html element - * @param {string} action The action, for example "click", - * without the prefix "on" - * @param {function} listener The callback function to be executed - * @param {boolean} [useCapture] - */ -util.addEventListener = function addEventListener(element, action, listener, useCapture) { - if (element.addEventListener) { - if (useCapture === undefined) - useCapture = false; - - if (action === "mousewheel" && navigator.userAgent.indexOf("Firefox") >= 0) { - action = "DOMMouseScroll"; // For Firefox - } - - element.addEventListener(action, listener, useCapture); - } else { - element.attachEvent("on" + action, listener); // IE browsers - } -}; - -/** - * Remove an event listener from an element - * @param {Element} element An html dom element - * @param {string} action The name of the event, for example "mousedown" - * @param {function} listener The listener function - * @param {boolean} [useCapture] - */ -util.removeEventListener = function removeEventListener(element, action, listener, useCapture) { - if (element.removeEventListener) { - // non-IE browsers - if (useCapture === undefined) - useCapture = false; - - if (action === "mousewheel" && navigator.userAgent.indexOf("Firefox") >= 0) { - action = "DOMMouseScroll"; // For Firefox - } - - element.removeEventListener(action, listener, useCapture); - } else { - // IE browsers - element.detachEvent("on" + action, listener); - } -}; - - -/** - * Get HTML element which is the target of the event - * @param {Event} event - * @return {Element} target element - */ -util.getTarget = function getTarget(event) { - // code from http://www.quirksmode.org/js/events_properties.html - if (!event) { - event = window.event; - } - - var target; - - if (event.target) { - target = event.target; - } - else if (event.srcElement) { - target = event.srcElement; - } - - if (target.nodeType != undefined && target.nodeType == 3) { - // defeat Safari bug - target = target.parentNode; - } - - return target; -}; - -/** - * Stop event propagation - */ -util.stopPropagation = function stopPropagation(event) { - if (!event) - event = window.event; - - if (event.stopPropagation) { - event.stopPropagation(); // non-IE browsers - } - else { - event.cancelBubble = true; // IE browsers - } -}; - - -/** - * Cancels the event if it is cancelable, without stopping further propagation of the event. - */ -util.preventDefault = function preventDefault (event) { - if (!event) - event = window.event; - - if (event.preventDefault) { - event.preventDefault(); // non-IE browsers - } - else { - event.returnValue = false; // IE browsers - } -}; - - -util.option = {}; - -/** - * Convert a value into a boolean - * @param {Boolean | function | undefined} value - * @param {Boolean} [defaultValue] - * @returns {Boolean} bool - */ -util.option.asBoolean = function (value, defaultValue) { - if (typeof value == 'function') { - value = value(); - } - - if (value != null) { - return (value != false); - } - - return defaultValue || null; -}; - -/** - * Convert a value into a number - * @param {Boolean | function | undefined} value - * @param {Number} [defaultValue] - * @returns {Number} number - */ -util.option.asNumber = function (value, defaultValue) { - if (typeof value == 'function') { - value = value(); - } - - if (value != null) { - return Number(value) || defaultValue || null; - } - - return defaultValue || null; -}; - -/** - * Convert a value into a string - * @param {String | function | undefined} value - * @param {String} [defaultValue] - * @returns {String} str - */ -util.option.asString = function (value, defaultValue) { - if (typeof value == 'function') { - value = value(); - } - - if (value != null) { - return String(value); - } - - return defaultValue || null; -}; - -/** - * Convert a size or location into a string with pixels or a percentage - * @param {String | Number | function | undefined} value - * @param {String} [defaultValue] - * @returns {String} size - */ -util.option.asSize = function (value, defaultValue) { - if (typeof value == 'function') { - value = value(); - } - - if (util.isString(value)) { - return value; - } - else if (util.isNumber(value)) { - return value + 'px'; - } - else { - return defaultValue || null; - } -}; - -/** - * Convert a value into a DOM element - * @param {HTMLElement | function | undefined} value - * @param {HTMLElement} [defaultValue] - * @returns {HTMLElement | null} dom - */ -util.option.asElement = function (value, defaultValue) { - if (typeof value == 'function') { - value = value(); - } - - return value || defaultValue || null; -}; - -/** - * load css from text - * @param {String} css Text containing css - */ -util.loadCss = function (css) { - if (typeof document === 'undefined') { - return; - } - - // get the script location, and built the css file name from the js file name - // http://stackoverflow.com/a/2161748/1262753 - // var scripts = document.getElementsByTagName('script'); - // var jsFile = scripts[scripts.length-1].src.split('?')[0]; - // var cssFile = jsFile.substring(0, jsFile.length - 2) + 'css'; - - // inject css - // http://stackoverflow.com/questions/524696/how-to-create-a-style-tag-with-javascript - var style = document.createElement('style'); - style.type = 'text/css'; - if (style.styleSheet){ - style.styleSheet.cssText = css; - } else { - style.appendChild(document.createTextNode(css)); - } - - document.getElementsByTagName('head')[0].appendChild(style); -}; - -/** - * Event listener (singleton) - */ -// TODO: replace usage of the event listener for the EventBus -var events = { - 'listeners': [], - - /** - * Find a single listener by its object - * @param {Object} object - * @return {Number} index -1 when not found - */ - 'indexOf': function (object) { - var listeners = this.listeners; - for (var i = 0, iMax = this.listeners.length; i < iMax; i++) { - var listener = listeners[i]; - if (listener && listener.object == object) { - return i; - } - } - return -1; - }, - - /** - * Add an event listener - * @param {Object} object - * @param {String} event The name of an event, for example 'select' - * @param {function} callback The callback method, called when the - * event takes place - */ - 'addListener': function (object, event, callback) { - var index = this.indexOf(object); - var listener = this.listeners[index]; - if (!listener) { - listener = { - 'object': object, - 'events': {} - }; - this.listeners.push(listener); - } - - var callbacks = listener.events[event]; - if (!callbacks) { - callbacks = []; - listener.events[event] = callbacks; - } - - // add the callback if it does not yet exist - if (callbacks.indexOf(callback) == -1) { - callbacks.push(callback); - } - }, - - /** - * Remove an event listener - * @param {Object} object - * @param {String} event The name of an event, for example 'select' - * @param {function} callback The registered callback method - */ - 'removeListener': function (object, event, callback) { - var index = this.indexOf(object); - var listener = this.listeners[index]; - if (listener) { - var callbacks = listener.events[event]; - if (callbacks) { - index = callbacks.indexOf(callback); - if (index != -1) { - callbacks.splice(index, 1); - } - - // remove the array when empty - if (callbacks.length == 0) { - delete listener.events[event]; - } - } - - // count the number of registered events. remove listener when empty - var count = 0; - var events = listener.events; - for (var e in events) { - if (events.hasOwnProperty(e)) { - count++; - } - } - if (count == 0) { - delete this.listeners[index]; - } - } - }, - - /** - * Remove all registered event listeners - */ - 'removeAllListeners': function () { - this.listeners = []; - }, - - /** - * Trigger an event. All registered event handlers will be called - * @param {Object} object - * @param {String} event - * @param {Object} properties (optional) - */ - 'trigger': function (object, event, properties) { - var index = this.indexOf(object); - var listener = this.listeners[index]; - if (listener) { - var callbacks = listener.events[event]; - if (callbacks) { - for (var i = 0, iMax = callbacks.length; i < iMax; i++) { - callbacks[i](properties); - } - } - } - } -}; - -/** - * An event bus can be used to emit events, and to subscribe to events - * @constructor EventBus - */ -function EventBus() { - this.subscriptions = []; -} - -/** - * Subscribe to an event - * @param {String | RegExp} event The event can be a regular expression, or - * a string with wildcards, like 'server.*'. - * @param {function} callback. Callback are called with three parameters: - * {String} event, {*} [data], {*} [source] - * @param {*} [target] - * @returns {String} id A subscription id - */ -EventBus.prototype.on = function (event, callback, target) { - var regexp = (event instanceof RegExp) ? - event : - new RegExp(event.replace('*', '\\w+')); - - var subscription = { - id: util.randomUUID(), - event: event, - regexp: regexp, - callback: (typeof callback === 'function') ? callback : null, - target: target - }; - - this.subscriptions.push(subscription); - - return subscription.id; -}; - -/** - * Unsubscribe from an event - * @param {String | Object} filter Filter for subscriptions to be removed - * Filter can be a string containing a - * subscription id, or an object containing - * one or more of the fields id, event, - * callback, and target. - */ -EventBus.prototype.off = function (filter) { - var i = 0; - while (i < this.subscriptions.length) { - var subscription = this.subscriptions[i]; - - var match = true; - if (filter instanceof Object) { - // filter is an object. All fields must match - for (var prop in filter) { - if (filter.hasOwnProperty(prop)) { - if (filter[prop] !== subscription[prop]) { - match = false; - } - } - } - } - else { - // filter is a string, filter on id - match = (subscription.id == filter); - } - - if (match) { - this.subscriptions.splice(i, 1); - } - else { - i++; - } - } -}; - -/** - * Emit an event - * @param {String} event - * @param {*} [data] - * @param {*} [source] - */ -EventBus.prototype.emit = function (event, data, source) { - for (var i =0; i < this.subscriptions.length; i++) { - var subscription = this.subscriptions[i]; - if (subscription.regexp.test(event)) { - if (subscription.callback) { - subscription.callback(event, data, source); - } - } - } -}; - -/** - * DataSet - * - * Usage: - * var dataSet = new DataSet({ - * fieldId: '_id', - * convert: { - * // ... - * } - * }); - * - * dataSet.add(item); - * dataSet.add(data); - * dataSet.update(item); - * dataSet.update(data); - * dataSet.remove(id); - * dataSet.remove(ids); - * var data = dataSet.get(); - * var data = dataSet.get(id); - * var data = dataSet.get(ids); - * var data = dataSet.get(ids, options, data); - * dataSet.clear(); - * - * A data set can: - * - add/remove/update data - * - gives triggers upon changes in the data - * - can import/export data in various data formats - * - * @param {Object} [options] Available options: - * {String} fieldId Field name of the id in the - * items, 'id' by default. - * {Object.} [convert] - * {String[]} [fields] field names to be returned - * {function} [filter] filter items - * {String | function} [order] Order the items by - * a field name or custom sort function. - * {Array | DataTable} [data] If provided, items will be appended to this - * array or table. Required in case of Google - * DataTable. - * - * @throws Error - */ -DataSet.prototype.get = function (args) { - var me = this; - - // parse the arguments - var id, ids, options, data; - var firstType = util.getType(arguments[0]); - if (firstType == 'String' || firstType == 'Number') { - // get(id [, options] [, data]) - id = arguments[0]; - options = arguments[1]; - data = arguments[2]; - } - else if (firstType == 'Array') { - // get(ids [, options] [, data]) - ids = arguments[0]; - options = arguments[1]; - data = arguments[2]; - } - else { - // get([, options] [, data]) - options = arguments[0]; - data = arguments[1]; - } - - // determine the return type - var type; - if (options && options.type) { - type = (options.type == 'DataTable') ? 'DataTable' : 'Array'; - - if (data && (type != util.getType(data))) { - throw new Error('Type of parameter "data" (' + util.getType(data) + ') ' + - 'does not correspond with specified options.type (' + options.type + ')'); - } - if (type == 'DataTable' && !util.isDataTable(data)) { - throw new Error('Parameter "data" must be a DataTable ' + - 'when options.type is "DataTable"'); - } - } - else if (data) { - type = (util.getType(data) == 'DataTable') ? 'DataTable' : 'Array'; - } - else { - type = 'Array'; - } - - // build options - var convert = options && options.convert || this.options.convert; - var filter = options && options.filter; - var items = [], item, itemId, i, len; - - // convert items - if (id != undefined) { - // return a single item - item = me._getItem(id, convert); - if (filter && !filter(item)) { - item = null; - } - } - else if (ids != undefined) { - // return a subset of items - for (i = 0, len = ids.length; i < len; i++) { - item = me._getItem(ids[i], convert); - if (!filter || filter(item)) { - items.push(item); - } - } - } - else { - // return all items - for (itemId in this.data) { - if (this.data.hasOwnProperty(itemId)) { - item = me._getItem(itemId, convert); - if (!filter || filter(item)) { - items.push(item); - } - } - } - } - - // order the results - if (options && options.order && id == undefined) { - this._sort(items, options.order); - } - - // filter fields of the items - if (options && options.fields) { - var fields = options.fields; - if (id != undefined) { - item = this._filterFields(item, fields); - } - else { - for (i = 0, len = items.length; i < len; i++) { - items[i] = this._filterFields(items[i], fields); - } - } - } - - // return the results - if (type == 'DataTable') { - var columns = this._getColumnNames(data); - if (id != undefined) { - // append a single item to the data table - me._appendRow(data, columns, item); - } - else { - // copy the items to the provided data table - for (i = 0, len = items.length; i < len; i++) { - me._appendRow(data, columns, items[i]); - } - } - return data; - } - else { - // return an array - if (id != undefined) { - // a single item - return item; - } - else { - // multiple items - if (data) { - // copy the items to the provided array - for (i = 0, len = items.length; i < len; i++) { - data.push(items[i]); - } - return data; - } - else { - // just return our array - return items; - } - } - } -}; - -/** - * Get ids of all items or from a filtered set of items. - * @param {Object} [options] An Object with options. Available options: - * {function} [filter] filter items - * {String | function} [order] Order the items by - * a field name or custom sort function. - * @return {Array} ids - */ -DataSet.prototype.getIds = function (options) { - var data = this.data, - filter = options && options.filter, - order = options && options.order, - convert = options && options.convert || this.options.convert, - i, - len, - id, - item, - items, - ids = []; - - if (filter) { - // get filtered items - if (order) { - // create ordered list - items = []; - for (id in data) { - if (data.hasOwnProperty(id)) { - item = this._getItem(id, convert); - if (filter(item)) { - items.push(item); - } - } - } - - this._sort(items, order); - - for (i = 0, len = items.length; i < len; i++) { - ids[i] = items[i][this.fieldId]; - } - } - else { - // create unordered list - for (id in data) { - if (data.hasOwnProperty(id)) { - item = this._getItem(id, convert); - if (filter(item)) { - ids.push(item[this.fieldId]); - } - } - } - } - } - else { - // get all items - if (order) { - // create an ordered list - items = []; - for (id in data) { - if (data.hasOwnProperty(id)) { - items.push(data[id]); - } - } - - this._sort(items, order); - - for (i = 0, len = items.length; i < len; i++) { - ids[i] = items[i][this.fieldId]; - } - } - else { - // create unordered list - for (id in data) { - if (data.hasOwnProperty(id)) { - item = data[id]; - ids.push(item[this.fieldId]); - } - } - } - } - - return ids; -}; - -/** - * Execute a callback function for every item in the dataset. - * The order of the items is not determined. - * @param {function} callback - * @param {Object} [options] Available options: - * {Object.} [convert] - * {String[]} [fields] filter fields - * {function} [filter] filter items - * {String | function} [order] Order the items by - * a field name or custom sort function. - */ -DataSet.prototype.forEach = function (callback, options) { - var filter = options && options.filter, - convert = options && options.convert || this.options.convert, - data = this.data, - item, - id; - - if (options && options.order) { - // execute forEach on ordered list - var items = this.get(options); - - for (var i = 0, len = items.length; i < len; i++) { - item = items[i]; - id = item[this.fieldId]; - callback(item, id); - } - } - else { - // unordered - for (id in data) { - if (data.hasOwnProperty(id)) { - item = this._getItem(id, convert); - if (!filter || filter(item)) { - callback(item, id); - } - } - } - } -}; - -/** - * Map every item in the dataset. - * @param {function} callback - * @param {Object} [options] Available options: - * {Object.} [convert] - * {String[]} [fields] filter fields - * {function} [filter] filter items - * {String | function} [order] Order the items by - * a field name or custom sort function. - * @return {Object[]} mappedItems - */ -DataSet.prototype.map = function (callback, options) { - var filter = options && options.filter, - convert = options && options.convert || this.options.convert, - mappedItems = [], - data = this.data, - item; - - // convert and filter items - for (var id in data) { - if (data.hasOwnProperty(id)) { - item = this._getItem(id, convert); - if (!filter || filter(item)) { - mappedItems.push(callback(item, id)); - } - } - } - - // order items - if (options && options.order) { - this._sort(mappedItems, options.order); - } - - return mappedItems; -}; - -/** - * Filter the fields of an item - * @param {Object} item - * @param {String[]} fields Field names - * @return {Object} filteredItem - * @private - */ -DataSet.prototype._filterFields = function (item, fields) { - var filteredItem = {}; - - for (var field in item) { - if (item.hasOwnProperty(field) && (fields.indexOf(field) != -1)) { - filteredItem[field] = item[field]; - } - } - - return filteredItem; -}; - -/** - * Sort the provided array with items - * @param {Object[]} items - * @param {String | function} order A field name or custom sort function. - * @private - */ -DataSet.prototype._sort = function (items, order) { - if (util.isString(order)) { - // order by provided field name - var name = order; // field name - items.sort(function (a, b) { - var av = a[name]; - var bv = b[name]; - return (av > bv) ? 1 : ((av < bv) ? -1 : 0); - }); - } - else if (typeof order === 'function') { - // order by sort function - items.sort(order); - } - // TODO: extend order by an Object {field:String, direction:String} - // where direction can be 'asc' or 'desc' - else { - throw new TypeError('Order must be a function or a string'); - } -}; - -/** - * Remove an object by pointer or by id - * @param {String | Number | Object | Array} id Object or id, or an array with - * objects or ids to be removed - * @param {String} [senderId] Optional sender id - * @return {Array} removedIds - */ -DataSet.prototype.remove = function (id, senderId) { - var removedIds = [], - i, len, removedId; - - if (id instanceof Array) { - for (i = 0, len = id.length; i < len; i++) { - removedId = this._remove(id[i]); - if (removedId != null) { - removedIds.push(removedId); - } - } - } - else { - removedId = this._remove(id); - if (removedId != null) { - removedIds.push(removedId); - } - } - - if (removedIds.length) { - this._trigger('remove', {items: removedIds}, senderId); - } - - return removedIds; -}; - -/** - * Remove an item by its id - * @param {Number | String | Object} id id or item - * @returns {Number | String | null} id - * @private - */ -DataSet.prototype._remove = function (id) { - if (util.isNumber(id) || util.isString(id)) { - if (this.data[id]) { - delete this.data[id]; - delete this.internalIds[id]; - return id; - } - } - else if (id instanceof Object) { - var itemId = id[this.fieldId]; - if (itemId && this.data[itemId]) { - delete this.data[itemId]; - delete this.internalIds[itemId]; - return itemId; - } - } - return null; -}; - -/** - * Clear the data - * @param {String} [senderId] Optional sender id - * @return {Array} removedIds The ids of all removed items - */ -DataSet.prototype.clear = function (senderId) { - var ids = Object.keys(this.data); - - this.data = {}; - this.internalIds = {}; - - this._trigger('remove', {items: ids}, senderId); - - return ids; -}; - -/** - * Find the item with maximum value of a specified field - * @param {String} field - * @return {Object | null} item Item containing max value, or null if no items - */ -DataSet.prototype.max = function (field) { - var data = this.data, - max = null, - maxField = null; - - for (var id in data) { - if (data.hasOwnProperty(id)) { - var item = data[id]; - var itemField = item[field]; - if (itemField != null && (!max || itemField > maxField)) { - max = item; - maxField = itemField; - } - } - } - - return max; -}; - -/** - * Find the item with minimum value of a specified field - * @param {String} field - * @return {Object | null} item Item containing max value, or null if no items - */ -DataSet.prototype.min = function (field) { - var data = this.data, - min = null, - minField = null; - - for (var id in data) { - if (data.hasOwnProperty(id)) { - var item = data[id]; - var itemField = item[field]; - if (itemField != null && (!min || itemField < minField)) { - min = item; - minField = itemField; - } - } - } - - return min; -}; - -/** - * Find all distinct values of a specified field - * @param {String} field - * @return {Array} values Array containing all distinct values. If the data - * items do not contain the specified field, an array - * containing a single value undefined is returned. - * The returned array is unordered. - */ -DataSet.prototype.distinct = function (field) { - var data = this.data, - values = [], - fieldType = this.options.convert[field], - count = 0; - - for (var prop in data) { - if (data.hasOwnProperty(prop)) { - var item = data[prop]; - var value = util.convert(item[field], fieldType); - var exists = false; - for (var i = 0; i < count; i++) { - if (values[i] == value) { - exists = true; - break; - } - } - if (!exists) { - values[count] = value; - count++; - } - } - } - - return values; -}; - -/** - * Add a single item. Will fail when an item with the same id already exists. - * @param {Object} item - * @return {String} id - * @private - */ -DataSet.prototype._addItem = function (item) { - var id = item[this.fieldId]; - - if (id != undefined) { - // check whether this id is already taken - if (this.data[id]) { - // item already exists - throw new Error('Cannot add item: item with id ' + id + ' already exists'); - } - } - else { - // generate an id - id = util.randomUUID(); - item[this.fieldId] = id; - this.internalIds[id] = item; - } - - var d = {}; - for (var field in item) { - if (item.hasOwnProperty(field)) { - var fieldType = this.convert[field]; // type may be undefined - d[field] = util.convert(item[field], fieldType); - } - } - this.data[id] = d; - - return id; -}; - -/** - * Get an item. Fields can be converted to a specific type - * @param {String} id - * @param {Object.} [convert] field types to convert - * @return {Object | null} item - * @private - */ -DataSet.prototype._getItem = function (id, convert) { - var field, value; - - // get the item from the dataset - var raw = this.data[id]; - if (!raw) { - return null; - } - - // convert the items field types - var converted = {}, - fieldId = this.fieldId, - internalIds = this.internalIds; - if (convert) { - for (field in raw) { - if (raw.hasOwnProperty(field)) { - value = raw[field]; - // output all fields, except internal ids - if ((field != fieldId) || !(value in internalIds)) { - converted[field] = util.convert(value, convert[field]); - } - } - } - } - else { - // no field types specified, no converting needed - for (field in raw) { - if (raw.hasOwnProperty(field)) { - value = raw[field]; - // output all fields, except internal ids - if ((field != fieldId) || !(value in internalIds)) { - converted[field] = value; - } - } - } - } - - return converted; -}; - -/** - * Update a single item: merge with existing item. - * Will fail when the item has no id, or when there does not exist an item - * with the same id. - * @param {Object} item - * @return {String} id - * @private - */ -DataSet.prototype._updateItem = function (item) { - var id = item[this.fieldId]; - if (id == undefined) { - throw new Error('Cannot update item: item has no id (item: ' + JSON.stringify(item) + ')'); - } - var d = this.data[id]; - if (!d) { - // item doesn't exist - throw new Error('Cannot update item: no item with id ' + id + ' found'); - } - - // merge with current item - for (var field in item) { - if (item.hasOwnProperty(field)) { - var fieldType = this.convert[field]; // type may be undefined - d[field] = util.convert(item[field], fieldType); - } - } - - return id; -}; - -/** - * Get an array with the column names of a Google DataTable - * @param {DataTable} dataTable - * @return {String[]} columnNames - * @private - */ -DataSet.prototype._getColumnNames = function (dataTable) { - var columns = []; - for (var col = 0, cols = dataTable.getNumberOfColumns(); col < cols; col++) { - columns[col] = dataTable.getColumnId(col) || dataTable.getColumnLabel(col); - } - return columns; -}; - -/** - * Append an item as a row to the dataTable - * @param dataTable - * @param columns - * @param item - * @private - */ -DataSet.prototype._appendRow = function (dataTable, columns, item) { - var row = dataTable.addRow(); - - for (var col = 0, cols = columns.length; col < cols; col++) { - var field = columns[col]; - dataTable.setValue(row, col, item[field]); - } -}; - -/** - * DataView - * - * a dataview offers a filtered view on a dataset or an other dataview. - * - * @param {DataSet | DataView} data - * @param {Object} [options] Available options: see method get - * - * @constructor DataView - */ -function DataView (data, options) { - this.id = util.randomUUID(); - - this.data = null; - this.ids = {}; // ids of the items currently in memory (just contains a boolean true) - this.options = options || {}; - this.fieldId = 'id'; // name of the field containing id - this.subscribers = {}; // event subscribers - - var me = this; - this.listener = function () { - me._onEvent.apply(me, arguments); - }; - - this.setData(data); -} - -// TODO: implement a function .config() to dynamically update things like configured filter -// and trigger changes accordingly - -/** - * Set a data source for the view - * @param {DataSet | DataView} data - */ -DataView.prototype.setData = function (data) { - var ids, dataItems, i, len; - - if (this.data) { - // unsubscribe from current dataset - if (this.data.unsubscribe) { - this.data.unsubscribe('*', this.listener); - } - - // trigger a remove of all items in memory - ids = []; - for (var id in this.ids) { - if (this.ids.hasOwnProperty(id)) { - ids.push(id); - } - } - this.ids = {}; - this._trigger('remove', {items: ids}); - } - - this.data = data; - - if (this.data) { - // update fieldId - this.fieldId = this.options.fieldId || - (this.data && this.data.options && this.data.options.fieldId) || - 'id'; - - // trigger an add of all added items - ids = this.data.getIds({filter: this.options && this.options.filter}); - for (i = 0, len = ids.length; i < len; i++) { - id = ids[i]; - this.ids[id] = true; - } - this._trigger('add', {items: ids}); - - // subscribe to new dataset - if (this.data.subscribe) { - this.data.subscribe('*', this.listener); - } - } -}; - -/** - * Get data from the data view - * - * Usage: - * - * get() - * get(options: Object) - * get(options: Object, data: Array | DataTable) - * - * get(id: Number) - * get(id: Number, options: Object) - * get(id: Number, options: Object, data: Array | DataTable) - * - * get(ids: Number[]) - * get(ids: Number[], options: Object) - * get(ids: Number[], options: Object, data: Array | DataTable) - * - * Where: - * - * {Number | String} id The id of an item - * {Number[] | String{}} ids An array with ids of items - * {Object} options An Object with options. Available options: - * {String} [type] Type of data to be returned. Can - * be 'DataTable' or 'Array' (default) - * {Object.} [convert] - * {String[]} [fields] field names to be returned - * {function} [filter] filter items - * {String | function} [order] Order the items by - * a field name or custom sort function. - * {Array | DataTable} [data] If provided, items will be appended to this - * array or table. Required in case of Google - * DataTable. - * @param args - */ -DataView.prototype.get = function (args) { - var me = this; - - // parse the arguments - var ids, options, data; - var firstType = util.getType(arguments[0]); - if (firstType == 'String' || firstType == 'Number' || firstType == 'Array') { - // get(id(s) [, options] [, data]) - ids = arguments[0]; // can be a single id or an array with ids - options = arguments[1]; - data = arguments[2]; - } - else { - // get([, options] [, data]) - options = arguments[0]; - data = arguments[1]; - } - - // extend the options with the default options and provided options - var viewOptions = util.extend({}, this.options, options); - - // create a combined filter method when needed - if (this.options.filter && options && options.filter) { - viewOptions.filter = function (item) { - return me.options.filter(item) && options.filter(item); - } - } - - // build up the call to the linked data set - var getArguments = []; - if (ids != undefined) { - getArguments.push(ids); - } - getArguments.push(viewOptions); - getArguments.push(data); - - return this.data && this.data.get.apply(this.data, getArguments); -}; - -/** - * Get ids of all items or from a filtered set of items. - * @param {Object} [options] An Object with options. Available options: - * {function} [filter] filter items - * {String | function} [order] Order the items by - * a field name or custom sort function. - * @return {Array} ids - */ -DataView.prototype.getIds = function (options) { - var ids; - - if (this.data) { - var defaultFilter = this.options.filter; - var filter; - - if (options && options.filter) { - if (defaultFilter) { - filter = function (item) { - return defaultFilter(item) && options.filter(item); - } - } - else { - filter = options.filter; - } - } - else { - filter = defaultFilter; - } - - ids = this.data.getIds({ - filter: filter, - order: options && options.order - }); - } - else { - ids = []; - } - - return ids; -}; - -/** - * Event listener. Will propagate all events from the connected data set to - * the subscribers of the DataView, but will filter the items and only trigger - * when there are changes in the filtered data set. - * @param {String} event - * @param {Object | null} params - * @param {String} senderId - * @private - */ -DataView.prototype._onEvent = function (event, params, senderId) { - var i, len, id, item, - ids = params && params.items, - data = this.data, - added = [], - updated = [], - removed = []; - - if (ids && data) { - switch (event) { - case 'add': - // filter the ids of the added items - for (i = 0, len = ids.length; i < len; i++) { - id = ids[i]; - item = this.get(id); - if (item) { - this.ids[id] = true; - added.push(id); - } - } - - break; - - case 'update': - // determine the event from the views viewpoint: an updated - // item can be added, updated, or removed from this view. - for (i = 0, len = ids.length; i < len; i++) { - id = ids[i]; - item = this.get(id); - - if (item) { - if (this.ids[id]) { - updated.push(id); - } - else { - this.ids[id] = true; - added.push(id); - } - } - else { - if (this.ids[id]) { - delete this.ids[id]; - removed.push(id); - } - else { - // nothing interesting for me :-( - } - } - } - - break; - - case 'remove': - // filter the ids of the removed items - for (i = 0, len = ids.length; i < len; i++) { - id = ids[i]; - if (this.ids[id]) { - delete this.ids[id]; - removed.push(id); - } - } - - break; - } - - if (added.length) { - this._trigger('add', {items: added}, senderId); - } - if (updated.length) { - this._trigger('update', {items: updated}, senderId); - } - if (removed.length) { - this._trigger('remove', {items: removed}, senderId); - } - } -}; - -// copy subscription functionality from DataSet -DataView.prototype.subscribe = DataSet.prototype.subscribe; -DataView.prototype.unsubscribe = DataSet.prototype.unsubscribe; -DataView.prototype._trigger = DataSet.prototype._trigger; - -/** - * @constructor TimeStep - * The class TimeStep is an iterator for dates. You provide a start date and an - * end date. The class itself determines the best scale (step size) based on the - * provided start Date, end Date, and minimumStep. - * - * If minimumStep is provided, the step size is chosen as close as possible - * to the minimumStep but larger than minimumStep. If minimumStep is not - * provided, the scale is set to 1 DAY. - * The minimumStep should correspond with the onscreen size of about 6 characters - * - * Alternatively, you can set a scale by hand. - * After creation, you can initialize the class by executing first(). Then you - * can iterate from the start date to the end date via next(). You can check if - * the end date is reached with the function hasNext(). After each step, you can - * retrieve the current date via getCurrent(). - * The TimeStep has scales ranging from milliseconds, seconds, minutes, hours, - * days, to years. - * - * Version: 1.2 - * - * @param {Date} [start] The start date, for example new Date(2010, 9, 21) - * or new Date(2010, 9, 21, 23, 45, 00) - * @param {Date} [end] The end date - * @param {Number} [minimumStep] Optional. Minimum step size in milliseconds - */ -TimeStep = function(start, end, minimumStep) { - // variables - this.current = new Date(); - this._start = new Date(); - this._end = new Date(); - - this.autoScale = true; - this.scale = TimeStep.SCALE.DAY; - this.step = 1; - - // initialize the range - this.setRange(start, end, minimumStep); -}; - -/// enum scale -TimeStep.SCALE = { - MILLISECOND: 1, - SECOND: 2, - MINUTE: 3, - HOUR: 4, - DAY: 5, - WEEKDAY: 6, - MONTH: 7, - YEAR: 8 -}; - - -/** - * Set a new range - * If minimumStep is provided, the step size is chosen as close as possible - * to the minimumStep but larger than minimumStep. If minimumStep is not - * provided, the scale is set to 1 DAY. - * The minimumStep should correspond with the onscreen size of about 6 characters - * @param {Date} [start] The start date and time. - * @param {Date} [end] The end date and time. - * @param {int} [minimumStep] Optional. Minimum step size in milliseconds - */ -TimeStep.prototype.setRange = function(start, end, minimumStep) { - if (!(start instanceof Date) || !(end instanceof Date)) { - throw "No legal start or end date in method setRange"; - } - - this._start = (start != undefined) ? new Date(start.valueOf()) : new Date(); - this._end = (end != undefined) ? new Date(end.valueOf()) : new Date(); - - if (this.autoScale) { - this.setMinimumStep(minimumStep); - } -}; - -/** - * Set the range iterator to the start date. - */ -TimeStep.prototype.first = function() { - this.current = new Date(this._start.valueOf()); - this.roundToMinor(); -}; - -/** - * Round the current date to the first minor date value - * This must be executed once when the current date is set to start Date - */ -TimeStep.prototype.roundToMinor = function() { - // round to floor - // IMPORTANT: we have no breaks in this switch! (this is no bug) - //noinspection FallthroughInSwitchStatementJS - switch (this.scale) { - case TimeStep.SCALE.YEAR: - this.current.setFullYear(this.step * Math.floor(this.current.getFullYear() / this.step)); - this.current.setMonth(0); - case TimeStep.SCALE.MONTH: this.current.setDate(1); - case TimeStep.SCALE.DAY: // intentional fall through - case TimeStep.SCALE.WEEKDAY: this.current.setHours(0); - case TimeStep.SCALE.HOUR: this.current.setMinutes(0); - case TimeStep.SCALE.MINUTE: this.current.setSeconds(0); - case TimeStep.SCALE.SECOND: this.current.setMilliseconds(0); - //case TimeStep.SCALE.MILLISECOND: // nothing to do for milliseconds - } - - if (this.step != 1) { - // round down to the first minor value that is a multiple of the current step size - switch (this.scale) { - case TimeStep.SCALE.MILLISECOND: this.current.setMilliseconds(this.current.getMilliseconds() - this.current.getMilliseconds() % this.step); break; - case TimeStep.SCALE.SECOND: this.current.setSeconds(this.current.getSeconds() - this.current.getSeconds() % this.step); break; - case TimeStep.SCALE.MINUTE: this.current.setMinutes(this.current.getMinutes() - this.current.getMinutes() % this.step); break; - case TimeStep.SCALE.HOUR: this.current.setHours(this.current.getHours() - this.current.getHours() % this.step); break; - case TimeStep.SCALE.WEEKDAY: // intentional fall through - case TimeStep.SCALE.DAY: this.current.setDate((this.current.getDate()-1) - (this.current.getDate()-1) % this.step + 1); break; - case TimeStep.SCALE.MONTH: this.current.setMonth(this.current.getMonth() - this.current.getMonth() % this.step); break; - case TimeStep.SCALE.YEAR: this.current.setFullYear(this.current.getFullYear() - this.current.getFullYear() % this.step); break; - default: break; - } - } -}; - -/** - * Check if the there is a next step - * @return {boolean} true if the current date has not passed the end date - */ -TimeStep.prototype.hasNext = function () { - return (this.current.valueOf() <= this._end.valueOf()); -}; - -/** - * Do the next step - */ -TimeStep.prototype.next = function() { - var prev = this.current.valueOf(); - - // Two cases, needed to prevent issues with switching daylight savings - // (end of March and end of October) - if (this.current.getMonth() < 6) { - switch (this.scale) { - case TimeStep.SCALE.MILLISECOND: - - this.current = new Date(this.current.valueOf() + this.step); break; - case TimeStep.SCALE.SECOND: this.current = new Date(this.current.valueOf() + this.step * 1000); break; - case TimeStep.SCALE.MINUTE: this.current = new Date(this.current.valueOf() + this.step * 1000 * 60); break; - case TimeStep.SCALE.HOUR: - this.current = new Date(this.current.valueOf() + this.step * 1000 * 60 * 60); - // in case of skipping an hour for daylight savings, adjust the hour again (else you get: 0h 5h 9h ... instead of 0h 4h 8h ...) - var h = this.current.getHours(); - this.current.setHours(h - (h % this.step)); - break; - case TimeStep.SCALE.WEEKDAY: // intentional fall through - case TimeStep.SCALE.DAY: this.current.setDate(this.current.getDate() + this.step); break; - case TimeStep.SCALE.MONTH: this.current.setMonth(this.current.getMonth() + this.step); break; - case TimeStep.SCALE.YEAR: this.current.setFullYear(this.current.getFullYear() + this.step); break; - default: break; - } - } - else { - switch (this.scale) { - case TimeStep.SCALE.MILLISECOND: this.current = new Date(this.current.valueOf() + this.step); break; - case TimeStep.SCALE.SECOND: this.current.setSeconds(this.current.getSeconds() + this.step); break; - case TimeStep.SCALE.MINUTE: this.current.setMinutes(this.current.getMinutes() + this.step); break; - case TimeStep.SCALE.HOUR: this.current.setHours(this.current.getHours() + this.step); break; - case TimeStep.SCALE.WEEKDAY: // intentional fall through - case TimeStep.SCALE.DAY: this.current.setDate(this.current.getDate() + this.step); break; - case TimeStep.SCALE.MONTH: this.current.setMonth(this.current.getMonth() + this.step); break; - case TimeStep.SCALE.YEAR: this.current.setFullYear(this.current.getFullYear() + this.step); break; - default: break; - } - } - - if (this.step != 1) { - // round down to the correct major value - switch (this.scale) { - case TimeStep.SCALE.MILLISECOND: if(this.current.getMilliseconds() < this.step) this.current.setMilliseconds(0); break; - case TimeStep.SCALE.SECOND: if(this.current.getSeconds() < this.step) this.current.setSeconds(0); break; - case TimeStep.SCALE.MINUTE: if(this.current.getMinutes() < this.step) this.current.setMinutes(0); break; - case TimeStep.SCALE.HOUR: if(this.current.getHours() < this.step) this.current.setHours(0); break; - case TimeStep.SCALE.WEEKDAY: // intentional fall through - case TimeStep.SCALE.DAY: if(this.current.getDate() < this.step+1) this.current.setDate(1); break; - case TimeStep.SCALE.MONTH: if(this.current.getMonth() < this.step) this.current.setMonth(0); break; - case TimeStep.SCALE.YEAR: break; // nothing to do for year - default: break; - } - } - - // safety mechanism: if current time is still unchanged, move to the end - if (this.current.valueOf() == prev) { - this.current = new Date(this._end.valueOf()); - } -}; - - -/** - * Get the current datetime - * @return {Date} current The current date - */ -TimeStep.prototype.getCurrent = function() { - return this.current; -}; - -/** - * Set a custom scale. Autoscaling will be disabled. - * For example setScale(SCALE.MINUTES, 5) will result - * in minor steps of 5 minutes, and major steps of an hour. - * - * @param {TimeStep.SCALE} newScale - * A scale. Choose from SCALE.MILLISECOND, - * SCALE.SECOND, SCALE.MINUTE, SCALE.HOUR, - * SCALE.WEEKDAY, SCALE.DAY, SCALE.MONTH, - * SCALE.YEAR. - * @param {Number} newStep A step size, by default 1. Choose for - * example 1, 2, 5, or 10. - */ -TimeStep.prototype.setScale = function(newScale, newStep) { - this.scale = newScale; - - if (newStep > 0) { - this.step = newStep; - } - - this.autoScale = false; -}; - -/** - * Enable or disable autoscaling - * @param {boolean} enable If true, autoascaling is set true - */ -TimeStep.prototype.setAutoScale = function (enable) { - this.autoScale = enable; -}; - - -/** - * Automatically determine the scale that bests fits the provided minimum step - * @param {Number} [minimumStep] The minimum step size in milliseconds - */ -TimeStep.prototype.setMinimumStep = function(minimumStep) { - if (minimumStep == undefined) { - return; - } - - var stepYear = (1000 * 60 * 60 * 24 * 30 * 12); - var stepMonth = (1000 * 60 * 60 * 24 * 30); - var stepDay = (1000 * 60 * 60 * 24); - var stepHour = (1000 * 60 * 60); - var stepMinute = (1000 * 60); - var stepSecond = (1000); - var stepMillisecond= (1); - - // find the smallest step that is larger than the provided minimumStep - if (stepYear*1000 > minimumStep) {this.scale = TimeStep.SCALE.YEAR; this.step = 1000;} - if (stepYear*500 > minimumStep) {this.scale = TimeStep.SCALE.YEAR; this.step = 500;} - if (stepYear*100 > minimumStep) {this.scale = TimeStep.SCALE.YEAR; this.step = 100;} - if (stepYear*50 > minimumStep) {this.scale = TimeStep.SCALE.YEAR; this.step = 50;} - if (stepYear*10 > minimumStep) {this.scale = TimeStep.SCALE.YEAR; this.step = 10;} - if (stepYear*5 > minimumStep) {this.scale = TimeStep.SCALE.YEAR; this.step = 5;} - if (stepYear > minimumStep) {this.scale = TimeStep.SCALE.YEAR; this.step = 1;} - if (stepMonth*3 > minimumStep) {this.scale = TimeStep.SCALE.MONTH; this.step = 3;} - if (stepMonth > minimumStep) {this.scale = TimeStep.SCALE.MONTH; this.step = 1;} - if (stepDay*5 > minimumStep) {this.scale = TimeStep.SCALE.DAY; this.step = 5;} - if (stepDay*2 > minimumStep) {this.scale = TimeStep.SCALE.DAY; this.step = 2;} - if (stepDay > minimumStep) {this.scale = TimeStep.SCALE.DAY; this.step = 1;} - if (stepDay/2 > minimumStep) {this.scale = TimeStep.SCALE.WEEKDAY; this.step = 1;} - if (stepHour*4 > minimumStep) {this.scale = TimeStep.SCALE.HOUR; this.step = 4;} - if (stepHour > minimumStep) {this.scale = TimeStep.SCALE.HOUR; this.step = 1;} - if (stepMinute*15 > minimumStep) {this.scale = TimeStep.SCALE.MINUTE; this.step = 15;} - if (stepMinute*10 > minimumStep) {this.scale = TimeStep.SCALE.MINUTE; this.step = 10;} - if (stepMinute*5 > minimumStep) {this.scale = TimeStep.SCALE.MINUTE; this.step = 5;} - if (stepMinute > minimumStep) {this.scale = TimeStep.SCALE.MINUTE; this.step = 1;} - if (stepSecond*15 > minimumStep) {this.scale = TimeStep.SCALE.SECOND; this.step = 15;} - if (stepSecond*10 > minimumStep) {this.scale = TimeStep.SCALE.SECOND; this.step = 10;} - if (stepSecond*5 > minimumStep) {this.scale = TimeStep.SCALE.SECOND; this.step = 5;} - if (stepSecond > minimumStep) {this.scale = TimeStep.SCALE.SECOND; this.step = 1;} - if (stepMillisecond*200 > minimumStep) {this.scale = TimeStep.SCALE.MILLISECOND; this.step = 200;} - if (stepMillisecond*100 > minimumStep) {this.scale = TimeStep.SCALE.MILLISECOND; this.step = 100;} - if (stepMillisecond*50 > minimumStep) {this.scale = TimeStep.SCALE.MILLISECOND; this.step = 50;} - if (stepMillisecond*10 > minimumStep) {this.scale = TimeStep.SCALE.MILLISECOND; this.step = 10;} - if (stepMillisecond*5 > minimumStep) {this.scale = TimeStep.SCALE.MILLISECOND; this.step = 5;} - if (stepMillisecond > minimumStep) {this.scale = TimeStep.SCALE.MILLISECOND; this.step = 1;} -}; - -/** - * Snap a date to a rounded value. The snap intervals are dependent on the - * current scale and step. - * @param {Date} date the date to be snapped - */ -TimeStep.prototype.snap = function(date) { - if (this.scale == TimeStep.SCALE.YEAR) { - var year = date.getFullYear() + Math.round(date.getMonth() / 12); - date.setFullYear(Math.round(year / this.step) * this.step); - date.setMonth(0); - date.setDate(0); - date.setHours(0); - date.setMinutes(0); - date.setSeconds(0); - date.setMilliseconds(0); - } - else if (this.scale == TimeStep.SCALE.MONTH) { - if (date.getDate() > 15) { - date.setDate(1); - date.setMonth(date.getMonth() + 1); - // important: first set Date to 1, after that change the month. - } - else { - date.setDate(1); - } - - date.setHours(0); - date.setMinutes(0); - date.setSeconds(0); - date.setMilliseconds(0); - } - else if (this.scale == TimeStep.SCALE.DAY || - this.scale == TimeStep.SCALE.WEEKDAY) { - //noinspection FallthroughInSwitchStatementJS - switch (this.step) { - case 5: - case 2: - date.setHours(Math.round(date.getHours() / 24) * 24); break; - default: - date.setHours(Math.round(date.getHours() / 12) * 12); break; - } - date.setMinutes(0); - date.setSeconds(0); - date.setMilliseconds(0); - } - else if (this.scale == TimeStep.SCALE.HOUR) { - switch (this.step) { - case 4: - date.setMinutes(Math.round(date.getMinutes() / 60) * 60); break; - default: - date.setMinutes(Math.round(date.getMinutes() / 30) * 30); break; - } - date.setSeconds(0); - date.setMilliseconds(0); - } else if (this.scale == TimeStep.SCALE.MINUTE) { - //noinspection FallthroughInSwitchStatementJS - switch (this.step) { - case 15: - case 10: - date.setMinutes(Math.round(date.getMinutes() / 5) * 5); - date.setSeconds(0); - break; - case 5: - date.setSeconds(Math.round(date.getSeconds() / 60) * 60); break; - default: - date.setSeconds(Math.round(date.getSeconds() / 30) * 30); break; - } - date.setMilliseconds(0); - } - else if (this.scale == TimeStep.SCALE.SECOND) { - //noinspection FallthroughInSwitchStatementJS - switch (this.step) { - case 15: - case 10: - date.setSeconds(Math.round(date.getSeconds() / 5) * 5); - date.setMilliseconds(0); - break; - case 5: - date.setMilliseconds(Math.round(date.getMilliseconds() / 1000) * 1000); break; - default: - date.setMilliseconds(Math.round(date.getMilliseconds() / 500) * 500); break; - } - } - else if (this.scale == TimeStep.SCALE.MILLISECOND) { - var step = this.step > 5 ? this.step / 2 : 1; - date.setMilliseconds(Math.round(date.getMilliseconds() / step) * step); - } -}; - -/** - * Check if the current value is a major value (for example when the step - * is DAY, a major value is each first day of the MONTH) - * @return {boolean} true if current date is major, else false. - */ -TimeStep.prototype.isMajor = function() { - switch (this.scale) { - case TimeStep.SCALE.MILLISECOND: - return (this.current.getMilliseconds() == 0); - case TimeStep.SCALE.SECOND: - return (this.current.getSeconds() == 0); - case TimeStep.SCALE.MINUTE: - return (this.current.getHours() == 0) && (this.current.getMinutes() == 0); - // Note: this is no bug. Major label is equal for both minute and hour scale - case TimeStep.SCALE.HOUR: - return (this.current.getHours() == 0); - case TimeStep.SCALE.WEEKDAY: // intentional fall through - case TimeStep.SCALE.DAY: - return (this.current.getDate() == 1); - case TimeStep.SCALE.MONTH: - return (this.current.getMonth() == 0); - case TimeStep.SCALE.YEAR: - return false; - default: - return false; - } -}; - - -/** - * Returns formatted text for the minor axislabel, depending on the current - * date and the scale. For example when scale is MINUTE, the current time is - * formatted as "hh:mm". - * @param {Date} [date] custom date. if not provided, current date is taken - */ -TimeStep.prototype.getLabelMinor = function(date) { - if (date == undefined) { - date = this.current; - } - - switch (this.scale) { - case TimeStep.SCALE.MILLISECOND: return moment(date).format('SSS'); - case TimeStep.SCALE.SECOND: return moment(date).format('s'); - case TimeStep.SCALE.MINUTE: return moment(date).format('HH:mm'); - case TimeStep.SCALE.HOUR: return moment(date).format('HH:mm'); - case TimeStep.SCALE.WEEKDAY: return moment(date).format('ddd D'); - case TimeStep.SCALE.DAY: return moment(date).format('D'); - case TimeStep.SCALE.MONTH: return moment(date).format('MMM'); - case TimeStep.SCALE.YEAR: return moment(date).format('YYYY'); - default: return ''; - } -}; - - -/** - * Returns formatted text for the major axis label, depending on the current - * date and the scale. For example when scale is MINUTE, the major scale is - * hours, and the hour will be formatted as "hh". - * @param {Date} [date] custom date. if not provided, current date is taken - */ -TimeStep.prototype.getLabelMajor = function(date) { - if (date == undefined) { - date = this.current; - } - - //noinspection FallthroughInSwitchStatementJS - switch (this.scale) { - case TimeStep.SCALE.MILLISECOND:return moment(date).format('HH:mm:ss'); - case TimeStep.SCALE.SECOND: return moment(date).format('D MMMM HH:mm'); - case TimeStep.SCALE.MINUTE: - case TimeStep.SCALE.HOUR: return moment(date).format('ddd D MMMM'); - case TimeStep.SCALE.WEEKDAY: - case TimeStep.SCALE.DAY: return moment(date).format('MMMM YYYY'); - case TimeStep.SCALE.MONTH: return moment(date).format('YYYY'); - case TimeStep.SCALE.YEAR: return ''; - default: return ''; - } -}; - -/** - * @constructor Stack - * Stacks items on top of each other. - * @param {ItemSet} parent - * @param {Object} [options] - */ -function Stack (parent, options) { - this.parent = parent; - - this.options = options || {}; - this.defaultOptions = { - order: function (a, b) { - //return (b.width - a.width) || (a.left - b.left); // TODO: cleanup - // Order: ranges over non-ranges, ranged ordered by width, and - // lastly ordered by start. - if (a instanceof ItemRange) { - if (b instanceof ItemRange) { - var aInt = (a.data.end - a.data.start); - var bInt = (b.data.end - b.data.start); - return (aInt - bInt) || (a.data.start - b.data.start); - } - else { - return -1; - } - } - else { - if (b instanceof ItemRange) { - return 1; - } - else { - return (a.data.start - b.data.start); - } - } - }, - margin: { - item: 10 - } - }; - - this.ordered = []; // ordered items -} - -/** - * Set options for the stack - * @param {Object} options Available options: - * {ItemSet} parent - * {Number} margin - * {function} order Stacking order - */ -Stack.prototype.setOptions = function setOptions (options) { - util.extend(this.options, options); - - // TODO: register on data changes at the connected parent itemset, and update the changed part only and immediately -}; - -/** - * Stack the items such that they don't overlap. The items will have a minimal - * distance equal to options.margin.item. - */ -Stack.prototype.update = function update() { - this._order(); - this._stack(); -}; - -/** - * Order the items. The items are ordered by width first, and by left position - * second. - * If a custom order function has been provided via the options, then this will - * be used. - * @private - */ -Stack.prototype._order = function _order () { - var items = this.parent.items; - if (!items) { - throw new Error('Cannot stack items: parent does not contain items'); - } - - // TODO: store the sorted items, to have less work later on - var ordered = []; - var index = 0; - // items is a map (no array) - util.forEach(items, function (item) { - if (item.visible) { - ordered[index] = item; - index++; - } - }); - - //if a customer stack order function exists, use it. - var order = this.options.order || this.defaultOptions.order; - if (!(typeof order === 'function')) { - throw new Error('Option order must be a function'); - } - - ordered.sort(order); - - this.ordered = ordered; -}; - -/** - * Adjust vertical positions of the events such that they don't overlap each - * other. - * @private - */ -Stack.prototype._stack = function _stack () { - var i, - iMax, - ordered = this.ordered, - options = this.options, - orientation = options.orientation || this.defaultOptions.orientation, - axisOnTop = (orientation == 'top'), - margin; - - if (options.margin && options.margin.item !== undefined) { - margin = options.margin.item; - } - else { - margin = this.defaultOptions.margin.item - } - - // calculate new, non-overlapping positions - for (i = 0, iMax = ordered.length; i < iMax; i++) { - var item = ordered[i]; - var collidingItem = null; - do { - // TODO: optimize checking for overlap. when there is a gap without items, - // you only need to check for items from the next item on, not from zero - collidingItem = this.checkOverlap(ordered, i, 0, i - 1, margin); - if (collidingItem != null) { - // There is a collision. Reposition the event above the colliding element - if (axisOnTop) { - item.top = collidingItem.top + collidingItem.height + margin; - } - else { - item.top = collidingItem.top - item.height - margin; - } - } - } while (collidingItem); - } -}; - -/** - * Check if the destiny position of given item overlaps with any - * of the other items from index itemStart to itemEnd. - * @param {Array} items Array with items - * @param {int} itemIndex Number of the item to be checked for overlap - * @param {int} itemStart First item to be checked. - * @param {int} itemEnd Last item to be checked. - * @return {Object | null} colliding item, or undefined when no collisions - * @param {Number} margin A minimum required margin. - * If margin is provided, the two items will be - * marked colliding when they overlap or - * when the margin between the two is smaller than - * the requested margin. - */ -Stack.prototype.checkOverlap = function checkOverlap (items, itemIndex, - itemStart, itemEnd, margin) { - var collision = this.collision; - - // we loop from end to start, as we suppose that the chance of a - // collision is larger for items at the end, so check these first. - var a = items[itemIndex]; - for (var i = itemEnd; i >= itemStart; i--) { - var b = items[i]; - if (collision(a, b, margin)) { - if (i != itemIndex) { - return b; - } - } - } - - return null; -}; - -/** - * Test if the two provided items collide - * The items must have parameters left, width, top, and height. - * @param {Component} a The first item - * @param {Component} b The second item - * @param {Number} margin A minimum required margin. - * If margin is provided, the two items will be - * marked colliding when they overlap or - * when the margin between the two is smaller than - * the requested margin. - * @return {boolean} true if a and b collide, else false - */ -Stack.prototype.collision = function collision (a, b, margin) { - return ((a.left - margin) < (b.left + b.getWidth()) && - (a.left + a.getWidth() + margin) > b.left && - (a.top - margin) < (b.top + b.height) && - (a.top + a.height + margin) > b.top); -}; - -/** - * @constructor Range - * A Range controls a numeric range with a start and end value. - * The Range adjusts the range based on mouse events or programmatic changes, - * and triggers events when the range is changing or has been changed. - * @param {Object} [options] See description at Range.setOptions - * @extends Controller - */ -function Range(options) { - this.id = util.randomUUID(); - this.start = null; // Number - this.end = null; // Number - - this.options = options || {}; - - this.setOptions(options); -} - -/** - * Set options for the range controller - * @param {Object} options Available options: - * {Number} min Minimum value for start - * {Number} max Maximum value for end - * {Number} zoomMin Set a minimum value for - * (end - start). - * {Number} zoomMax Set a maximum value for - * (end - start). - */ -Range.prototype.setOptions = function (options) { - util.extend(this.options, options); - - // re-apply range with new limitations - if (this.start !== null && this.end !== null) { - this.setRange(this.start, this.end); - } -}; - -/** - * Test whether direction has a valid value - * @param {String} direction 'horizontal' or 'vertical' - */ -function validateDirection (direction) { - if (direction != 'horizontal' && direction != 'vertical') { - throw new TypeError('Unknown direction "' + direction + '". ' + - 'Choose "horizontal" or "vertical".'); - } -} - -/** - * Add listeners for mouse and touch events to the component - * @param {Component} component - * @param {String} event Available events: 'move', 'zoom' - * @param {String} direction Available directions: 'horizontal', 'vertical' - */ -Range.prototype.subscribe = function (component, event, direction) { - var me = this; - - if (event == 'move') { - // drag start listener - component.on('dragstart', function (event) { - me._onDragStart(event, component); - }); - - // drag listener - component.on('drag', function (event) { - me._onDrag(event, component, direction); - }); - - // drag end listener - component.on('dragend', function (event) { - me._onDragEnd(event, component); - }); - } - else if (event == 'zoom') { - // mouse wheel - function mousewheel (event) { - me._onMouseWheel(event, component, direction); - } - component.on('mousewheel', mousewheel); - component.on('DOMMouseScroll', mousewheel); // For FF - - // pinch - component.on('touch', function (event) { - me._onTouch(); - }); - component.on('pinch', function (event) { - me._onPinch(event, component, direction); - }); - } - else { - throw new TypeError('Unknown event "' + event + '". ' + - 'Choose "move" or "zoom".'); - } -}; - -/** - * Event handler - * @param {String} event name of the event, for example 'click', 'mousemove' - * @param {function} callback callback handler, invoked with the raw HTML Event - * as parameter. - */ -Range.prototype.on = function (event, callback) { - events.addListener(this, event, callback); -}; - -/** - * Trigger an event - * @param {String} event name of the event, available events: 'rangechange', - * 'rangechanged' - * @private - */ -Range.prototype._trigger = function (event) { - events.trigger(this, event, { - start: this.start, - end: this.end - }); -}; - -/** - * Set a new start and end range - * @param {Number} [start] - * @param {Number} [end] - */ -Range.prototype.setRange = function(start, end) { - var changed = this._applyRange(start, end); - if (changed) { - this._trigger('rangechange'); - this._trigger('rangechanged'); - } -}; - -/** - * Set a new start and end range. This method is the same as setRange, but - * does not trigger a range change and range changed event, and it returns - * true when the range is changed - * @param {Number} [start] - * @param {Number} [end] - * @return {Boolean} changed - * @private - */ -Range.prototype._applyRange = function(start, end) { - var newStart = (start != null) ? util.convert(start, 'Number') : this.start, - newEnd = (end != null) ? util.convert(end, 'Number') : this.end, - max = (this.options.max != null) ? util.convert(this.options.max, 'Date').valueOf() : null, - min = (this.options.min != null) ? util.convert(this.options.min, 'Date').valueOf() : null, - diff; - - // check for valid number - if (isNaN(newStart) || newStart === null) { - throw new Error('Invalid start "' + start + '"'); - } - if (isNaN(newEnd) || newEnd === null) { - throw new Error('Invalid end "' + end + '"'); - } - - // prevent start < end - if (newEnd < newStart) { - newEnd = newStart; - } - - // prevent start < min - if (min !== null) { - if (newStart < min) { - diff = (min - newStart); - newStart += diff; - newEnd += diff; - - // prevent end > max - if (max != null) { - if (newEnd > max) { - newEnd = max; - } - } - } - } - - // prevent end > max - if (max !== null) { - if (newEnd > max) { - diff = (newEnd - max); - newStart -= diff; - newEnd -= diff; - - // prevent start < min - if (min != null) { - if (newStart < min) { - newStart = min; - } - } - } - } - - // prevent (end-start) < zoomMin - if (this.options.zoomMin !== null) { - var zoomMin = parseFloat(this.options.zoomMin); - if (zoomMin < 0) { - zoomMin = 0; - } - if ((newEnd - newStart) < zoomMin) { - if ((this.end - this.start) === zoomMin) { - // ignore this action, we are already zoomed to the minimum - newStart = this.start; - newEnd = this.end; - } - else { - // zoom to the minimum - diff = (zoomMin - (newEnd - newStart)); - newStart -= diff / 2; - newEnd += diff / 2; - } - } - } - - // prevent (end-start) > zoomMax - if (this.options.zoomMax !== null) { - var zoomMax = parseFloat(this.options.zoomMax); - if (zoomMax < 0) { - zoomMax = 0; - } - if ((newEnd - newStart) > zoomMax) { - if ((this.end - this.start) === zoomMax) { - // ignore this action, we are already zoomed to the maximum - newStart = this.start; - newEnd = this.end; - } - else { - // zoom to the maximum - diff = ((newEnd - newStart) - zoomMax); - newStart += diff / 2; - newEnd -= diff / 2; - } - } - } - - var changed = (this.start != newStart || this.end != newEnd); - - this.start = newStart; - this.end = newEnd; - - return changed; -}; - -/** - * Retrieve the current range. - * @return {Object} An object with start and end properties - */ -Range.prototype.getRange = function() { - return { - start: this.start, - end: this.end - }; -}; - -/** - * Calculate the conversion offset and scale for current range, based on - * the provided width - * @param {Number} width - * @returns {{offset: number, scale: number}} conversion - */ -Range.prototype.conversion = function (width) { - return Range.conversion(this.start, this.end, width); -}; - -/** - * Static method to calculate the conversion offset and scale for a range, - * based on the provided start, end, and width - * @param {Number} start - * @param {Number} end - * @param {Number} width - * @returns {{offset: number, scale: number}} conversion - */ -Range.conversion = function (start, end, width) { - if (width != 0 && (end - start != 0)) { - return { - offset: start, - scale: width / (end - start) - } - } - else { - return { - offset: 0, - scale: 1 - }; - } -}; - -// global (private) object to store drag params -var touchParams = {}; - -/** - * Start dragging horizontally or vertically - * @param {Event} event - * @param {Object} component - * @private - */ -Range.prototype._onDragStart = function(event, component) { - // refuse to drag when we where pinching to prevent the timeline make a jump - // when releasing the fingers in opposite order from the touch screen - if (touchParams.pinching) return; - - touchParams.start = this.start; - touchParams.end = this.end; - - var frame = component.frame; - if (frame) { - frame.style.cursor = 'move'; - } -}; - -/** - * Perform dragging operating. - * @param {Event} event - * @param {Component} component - * @param {String} direction 'horizontal' or 'vertical' - * @private - */ -Range.prototype._onDrag = function (event, component, direction) { - validateDirection(direction); - - // refuse to drag when we where pinching to prevent the timeline make a jump - // when releasing the fingers in opposite order from the touch screen - if (touchParams.pinching) return; - - var delta = (direction == 'horizontal') ? event.gesture.deltaX : event.gesture.deltaY, - interval = (touchParams.end - touchParams.start), - width = (direction == 'horizontal') ? component.width : component.height, - diffRange = -delta / width * interval; - - this._applyRange(touchParams.start + diffRange, touchParams.end + diffRange); - - // fire a rangechange event - this._trigger('rangechange'); -}; - -/** - * Stop dragging operating. - * @param {event} event - * @param {Component} component - * @private - */ -Range.prototype._onDragEnd = function (event, component) { - // refuse to drag when we where pinching to prevent the timeline make a jump - // when releasing the fingers in opposite order from the touch screen - if (touchParams.pinching) return; - - if (component.frame) { - component.frame.style.cursor = 'auto'; - } - - // fire a rangechanged event - this._trigger('rangechanged'); -}; - -/** - * Event handler for mouse wheel event, used to zoom - * Code from http://adomas.org/javascript-mouse-wheel/ - * @param {Event} event - * @param {Component} component - * @param {String} direction 'horizontal' or 'vertical' - * @private - */ -Range.prototype._onMouseWheel = function(event, component, direction) { - validateDirection(direction); - - // retrieve delta - var delta = 0; - if (event.wheelDelta) { /* IE/Opera. */ - delta = event.wheelDelta / 120; - } else if (event.detail) { /* Mozilla case. */ - // In Mozilla, sign of delta is different than in IE. - // Also, delta is multiple of 3. - delta = -event.detail / 3; - } - - // If delta is nonzero, handle it. - // Basically, delta is now positive if wheel was scrolled up, - // and negative, if wheel was scrolled down. - if (delta) { - // perform the zoom action. Delta is normally 1 or -1 - - // adjust a negative delta such that zooming in with delta 0.1 - // equals zooming out with a delta -0.1 - var scale; - if (delta < 0) { - scale = 1 - (delta / 5); - } - else { - scale = 1 / (1 + (delta / 5)) ; - } - - // calculate center, the date to zoom around - var gesture = Hammer.event.collectEventData(this, 'scroll', event), - pointer = getPointer(gesture.touches[0], component.frame), - pointerDate = this._pointerToDate(component, direction, pointer); - - this.zoom(scale, pointerDate); - } - - // Prevent default actions caused by mouse wheel - // (else the page and timeline both zoom and scroll) - util.preventDefault(event); -}; - -/** - * On start of a touch gesture, initialize scale to 1 - * @private - */ -Range.prototype._onTouch = function () { - touchParams.start = this.start; - touchParams.end = this.end; - touchParams.pinching = false; - touchParams.center = null; -}; - -/** - * Handle pinch event - * @param {Event} event - * @param {Component} component - * @param {String} direction 'horizontal' or 'vertical' - * @private - */ -Range.prototype._onPinch = function (event, component, direction) { - touchParams.pinching = true; - - if (event.gesture.touches.length > 1) { - if (!touchParams.center) { - touchParams.center = getPointer(event.gesture.center, component.frame); - } - - var scale = 1 / event.gesture.scale, - initDate = this._pointerToDate(component, direction, touchParams.center), - center = getPointer(event.gesture.center, component.frame), - date = this._pointerToDate(component, direction, center), - delta = date - initDate; // TODO: utilize delta - - // calculate new start and end - var newStart = parseInt(initDate + (touchParams.start - initDate) * scale); - var newEnd = parseInt(initDate + (touchParams.end - initDate) * scale); - - // apply new range - this.setRange(newStart, newEnd); - } -}; - -/** - * Helper function to calculate the center date for zooming - * @param {Component} component - * @param {{x: Number, y: Number}} pointer - * @param {String} direction 'horizontal' or 'vertical' - * @return {number} date - * @private - */ -Range.prototype._pointerToDate = function (component, direction, pointer) { - var conversion; - if (direction == 'horizontal') { - var width = component.width; - conversion = this.conversion(width); - return pointer.x / conversion.scale + conversion.offset; - } - else { - var height = component.height; - conversion = this.conversion(height); - return pointer.y / conversion.scale + conversion.offset; - } -}; - -/** - * Get the pointer location relative to the location of the dom element - * @param {{pageX: Number, pageY: Number}} touch - * @param {Element} element HTML DOM element - * @return {{x: Number, y: Number}} pointer - * @private - */ -function getPointer (touch, element) { - return { - x: touch.pageX - vis.util.getAbsoluteLeft(element), - y: touch.pageY - vis.util.getAbsoluteTop(element) - }; -} - -/** - * Zoom the range the given scale in or out. Start and end date will - * be adjusted, and the timeline will be redrawn. You can optionally give a - * date around which to zoom. - * For example, try scale = 0.9 or 1.1 - * @param {Number} scale Scaling factor. Values above 1 will zoom out, - * values below 1 will zoom in. - * @param {Number} [center] Value representing a date around which will - * be zoomed. - */ -Range.prototype.zoom = function(scale, center) { - // if centerDate is not provided, take it half between start Date and end Date - if (center == null) { - center = (this.start + this.end) / 2; - } - - // calculate new start and end - var newStart = center + (this.start - center) * scale; - var newEnd = center + (this.end - center) * scale; - - this.setRange(newStart, newEnd); -}; - -/** - * Move the range with a given delta to the left or right. Start and end - * value will be adjusted. For example, try delta = 0.1 or -0.1 - * @param {Number} delta Moving amount. Positive value will move right, - * negative value will move left - */ -Range.prototype.move = function(delta) { - // zoom start Date and end Date relative to the centerDate - var diff = (this.end - this.start); - - // apply new values - var newStart = this.start + diff * delta; - var newEnd = this.end + diff * delta; - - // TODO: reckon with min and max range - - this.start = newStart; - this.end = newEnd; -}; - -/** - * Move the range to a new center point - * @param {Number} moveTo New center point of the range - */ -Range.prototype.moveTo = function(moveTo) { - var center = (this.start + this.end) / 2; - - var diff = center - moveTo; - - // calculate new start and end - var newStart = this.start - diff; - var newEnd = this.end - diff; - - this.setRange(newStart, newEnd); -}; - -/** - * @constructor Controller - * - * A Controller controls the reflows and repaints of all visual components - */ -function Controller () { - this.id = util.randomUUID(); - this.components = {}; - - this.repaintTimer = undefined; - this.reflowTimer = undefined; -} - -/** - * Add a component to the controller - * @param {Component} component - */ -Controller.prototype.add = function add(component) { - // validate the component - if (component.id == undefined) { - throw new Error('Component has no field id'); - } - if (!(component instanceof Component) && !(component instanceof Controller)) { - throw new TypeError('Component must be an instance of ' + - 'prototype Component or Controller'); - } - - // add the component - component.controller = this; - this.components[component.id] = component; -}; - -/** - * Remove a component from the controller - * @param {Component | String} component - */ -Controller.prototype.remove = function remove(component) { - var id; - for (id in this.components) { - if (this.components.hasOwnProperty(id)) { - if (id == component || this.components[id] == component) { - break; - } - } - } - - if (id) { - delete this.components[id]; - } -}; - -/** - * Request a reflow. The controller will schedule a reflow - * @param {Boolean} [force] If true, an immediate reflow is forced. Default - * is false. - */ -Controller.prototype.requestReflow = function requestReflow(force) { - if (force) { - this.reflow(); - } - else { - if (!this.reflowTimer) { - var me = this; - this.reflowTimer = setTimeout(function () { - me.reflowTimer = undefined; - me.reflow(); - }, 0); - } - } -}; - -/** - * Request a repaint. The controller will schedule a repaint - * @param {Boolean} [force] If true, an immediate repaint is forced. Default - * is false. - */ -Controller.prototype.requestRepaint = function requestRepaint(force) { - if (force) { - this.repaint(); - } - else { - if (!this.repaintTimer) { - var me = this; - this.repaintTimer = setTimeout(function () { - me.repaintTimer = undefined; - me.repaint(); - }, 0); - } - } -}; - -/** - * Repaint all components - */ -Controller.prototype.repaint = function repaint() { - var changed = false; - - // cancel any running repaint request - if (this.repaintTimer) { - clearTimeout(this.repaintTimer); - this.repaintTimer = undefined; - } - - var done = {}; - - function repaint(component, id) { - if (!(id in done)) { - // first repaint the components on which this component is dependent - if (component.depends) { - component.depends.forEach(function (dep) { - repaint(dep, dep.id); - }); - } - if (component.parent) { - repaint(component.parent, component.parent.id); - } - - // repaint the component itself and mark as done - changed = component.repaint() || changed; - done[id] = true; - } - } - - util.forEach(this.components, repaint); - - // immediately reflow when needed - if (changed) { - this.reflow(); - } - // TODO: limit the number of nested reflows/repaints, prevent loop -}; - -/** - * Reflow all components - */ -Controller.prototype.reflow = function reflow() { - var resized = false; - - // cancel any running repaint request - if (this.reflowTimer) { - clearTimeout(this.reflowTimer); - this.reflowTimer = undefined; - } - - var done = {}; - - function reflow(component, id) { - if (!(id in done)) { - // first reflow the components on which this component is dependent - if (component.depends) { - component.depends.forEach(function (dep) { - reflow(dep, dep.id); - }); - } - if (component.parent) { - reflow(component.parent, component.parent.id); - } - - // reflow the component itself and mark as done - resized = component.reflow() || resized; - done[id] = true; - } - } - - util.forEach(this.components, reflow); - - // immediately repaint when needed - if (resized) { - this.repaint(); - } - // TODO: limit the number of nested reflows/repaints, prevent loop -}; - -/** - * Prototype for visual components - */ -function Component () { - this.id = null; - this.parent = null; - this.depends = null; - this.controller = null; - this.options = null; - - this.frame = null; // main DOM element - this.top = 0; - this.left = 0; - this.width = 0; - this.height = 0; -} - -/** - * Set parameters for the frame. Parameters will be merged in current parameter - * set. - * @param {Object} options Available parameters: - * {String | function} [className] - * {EventBus} [eventBus] - * {String | Number | function} [left] - * {String | Number | function} [top] - * {String | Number | function} [width] - * {String | Number | function} [height] - */ -Component.prototype.setOptions = function setOptions(options) { - if (options) { - util.extend(this.options, options); - - if (this.controller) { - this.requestRepaint(); - this.requestReflow(); - } - } -}; - -/** - * Get an option value by name - * The function will first check this.options object, and else will check - * this.defaultOptions. - * @param {String} name - * @return {*} value - */ -Component.prototype.getOption = function getOption(name) { - var value; - if (this.options) { - value = this.options[name]; - } - if (value === undefined && this.defaultOptions) { - value = this.defaultOptions[name]; - } - return value; -}; - -/** - * Get the container element of the component, which can be used by a child to - * add its own widgets. Not all components do have a container for childs, in - * that case null is returned. - * @returns {HTMLElement | null} container - */ -// TODO: get rid of the getContainer and getFrame methods, provide these via the options -Component.prototype.getContainer = function getContainer() { - // should be implemented by the component - return null; -}; - -/** - * Get the frame element of the component, the outer HTML DOM element. - * @returns {HTMLElement | null} frame - */ -Component.prototype.getFrame = function getFrame() { - return this.frame; -}; - -/** - * Repaint the component - * @return {Boolean} changed - */ -Component.prototype.repaint = function repaint() { - // should be implemented by the component - return false; -}; - -/** - * Reflow the component - * @return {Boolean} resized - */ -Component.prototype.reflow = function reflow() { - // should be implemented by the component - return false; -}; - -/** - * Hide the component from the DOM - * @return {Boolean} changed - */ -Component.prototype.hide = function hide() { - if (this.frame && this.frame.parentNode) { - this.frame.parentNode.removeChild(this.frame); - return true; - } - else { - return false; - } -}; - -/** - * Show the component in the DOM (when not already visible). - * A repaint will be executed when the component is not visible - * @return {Boolean} changed - */ -Component.prototype.show = function show() { - if (!this.frame || !this.frame.parentNode) { - return this.repaint(); - } - else { - return false; - } -}; - -/** - * Request a repaint. The controller will schedule a repaint - */ -Component.prototype.requestRepaint = function requestRepaint() { - if (this.controller) { - this.controller.requestRepaint(); - } - else { - throw new Error('Cannot request a repaint: no controller configured'); - // TODO: just do a repaint when no parent is configured? - } -}; - -/** - * Request a reflow. The controller will schedule a reflow - */ -Component.prototype.requestReflow = function requestReflow() { - if (this.controller) { - this.controller.requestReflow(); - } - else { - throw new Error('Cannot request a reflow: no controller configured'); - // TODO: just do a reflow when no parent is configured? - } -}; - -/** - * A panel can contain components - * @param {Component} [parent] - * @param {Component[]} [depends] Components on which this components depends - * (except for the parent) - * @param {Object} [options] Available parameters: - * {String | Number | function} [left] - * {String | Number | function} [top] - * {String | Number | function} [width] - * {String | Number | function} [height] - * {String | function} [className] - * @constructor Panel - * @extends Component - */ -function Panel(parent, depends, options) { - this.id = util.randomUUID(); - this.parent = parent; - this.depends = depends; - - this.options = options || {}; -} - -Panel.prototype = new Component(); - -/** - * Set options. Will extend the current options. - * @param {Object} [options] Available parameters: - * {String | function} [className] - * {String | Number | function} [left] - * {String | Number | function} [top] - * {String | Number | function} [width] - * {String | Number | function} [height] - */ -Panel.prototype.setOptions = Component.prototype.setOptions; - -/** - * Get the container element of the panel, which can be used by a child to - * add its own widgets. - * @returns {HTMLElement} container - */ -Panel.prototype.getContainer = function () { - return this.frame; -}; - -/** - * Repaint the component - * @return {Boolean} changed - */ -Panel.prototype.repaint = function () { - var changed = 0, - update = util.updateProperty, - asSize = util.option.asSize, - options = this.options, - frame = this.frame; - if (!frame) { - frame = document.createElement('div'); - frame.className = 'panel'; - - var className = options.className; - if (className) { - if (typeof className == 'function') { - util.addClassName(frame, String(className())); - } - else { - util.addClassName(frame, String(className)); - } - } - - this.frame = frame; - changed += 1; - } - if (!frame.parentNode) { - if (!this.parent) { - throw new Error('Cannot repaint panel: no parent attached'); - } - var parentContainer = this.parent.getContainer(); - if (!parentContainer) { - throw new Error('Cannot repaint panel: parent has no container element'); - } - parentContainer.appendChild(frame); - changed += 1; - } - - changed += update(frame.style, 'top', asSize(options.top, '0px')); - changed += update(frame.style, 'left', asSize(options.left, '0px')); - changed += update(frame.style, 'width', asSize(options.width, '100%')); - changed += update(frame.style, 'height', asSize(options.height, '100%')); - - return (changed > 0); -}; - -/** - * Reflow the component - * @return {Boolean} resized - */ -Panel.prototype.reflow = function () { - var changed = 0, - update = util.updateProperty, - frame = this.frame; - - if (frame) { - changed += update(this, 'top', frame.offsetTop); - changed += update(this, 'left', frame.offsetLeft); - changed += update(this, 'width', frame.offsetWidth); - changed += update(this, 'height', frame.offsetHeight); - } - else { - changed += 1; - } - - return (changed > 0); -}; - -/** - * A root panel can hold components. The root panel must be initialized with - * a DOM element as container. - * @param {HTMLElement} container - * @param {Object} [options] Available parameters: see RootPanel.setOptions. - * @constructor RootPanel - * @extends Panel - */ -function RootPanel(container, options) { - this.id = util.randomUUID(); - this.container = container; - - this.options = options || {}; - this.defaultOptions = { - autoResize: true - }; - - this.listeners = {}; // event listeners -} - -RootPanel.prototype = new Panel(); - -/** - * Set options. Will extend the current options. - * @param {Object} [options] Available parameters: - * {String | function} [className] - * {String | Number | function} [left] - * {String | Number | function} [top] - * {String | Number | function} [width] - * {String | Number | function} [height] - * {Boolean | function} [autoResize] - */ -RootPanel.prototype.setOptions = Component.prototype.setOptions; - -/** - * Repaint the component - * @return {Boolean} changed - */ -RootPanel.prototype.repaint = function () { - var changed = 0, - update = util.updateProperty, - asSize = util.option.asSize, - options = this.options, - frame = this.frame; - - if (!frame) { - frame = document.createElement('div'); - - this.frame = frame; - - changed += 1; - } - if (!frame.parentNode) { - if (!this.container) { - throw new Error('Cannot repaint root panel: no container attached'); - } - this.container.appendChild(frame); - changed += 1; - } - - frame.className = 'vis timeline rootpanel ' + options.orientation; - var className = options.className; - if (className) { - util.addClassName(frame, util.option.asString(className)); - } - - changed += update(frame.style, 'top', asSize(options.top, '0px')); - changed += update(frame.style, 'left', asSize(options.left, '0px')); - changed += update(frame.style, 'width', asSize(options.width, '100%')); - changed += update(frame.style, 'height', asSize(options.height, '100%')); - - this._updateEventEmitters(); - this._updateWatch(); - - return (changed > 0); -}; - -/** - * Reflow the component - * @return {Boolean} resized - */ -RootPanel.prototype.reflow = function () { - var changed = 0, - update = util.updateProperty, - frame = this.frame; - - if (frame) { - changed += update(this, 'top', frame.offsetTop); - changed += update(this, 'left', frame.offsetLeft); - changed += update(this, 'width', frame.offsetWidth); - changed += update(this, 'height', frame.offsetHeight); - } - else { - changed += 1; - } - - return (changed > 0); -}; - -/** - * Update watching for resize, depending on the current option - * @private - */ -RootPanel.prototype._updateWatch = function () { - var autoResize = this.getOption('autoResize'); - if (autoResize) { - this._watch(); - } - else { - this._unwatch(); - } -}; - -/** - * Watch for changes in the size of the frame. On resize, the Panel will - * automatically redraw itself. - * @private - */ -RootPanel.prototype._watch = function () { - var me = this; - - this._unwatch(); - - var checkSize = function () { - var autoResize = me.getOption('autoResize'); - if (!autoResize) { - // stop watching when the option autoResize is changed to false - me._unwatch(); - return; - } - - if (me.frame) { - // check whether the frame is resized - if ((me.frame.clientWidth != me.width) || - (me.frame.clientHeight != me.height)) { - me.requestReflow(); - } - } - }; - - // TODO: automatically cleanup the event listener when the frame is deleted - util.addEventListener(window, 'resize', checkSize); - - this.watchTimer = setInterval(checkSize, 1000); -}; - -/** - * Stop watching for a resize of the frame. - * @private - */ -RootPanel.prototype._unwatch = function () { - if (this.watchTimer) { - clearInterval(this.watchTimer); - this.watchTimer = undefined; - } - - // TODO: remove event listener on window.resize -}; - -/** - * Event handler - * @param {String} event name of the event, for example 'click', 'mousemove' - * @param {function} callback callback handler, invoked with the raw HTML Event - * as parameter. - */ -RootPanel.prototype.on = function (event, callback) { - // register the listener at this component - var arr = this.listeners[event]; - if (!arr) { - arr = []; - this.listeners[event] = arr; - } - arr.push(callback); - - this._updateEventEmitters(); -}; - -/** - * Update the event listeners for all event emitters - * @private - */ -RootPanel.prototype._updateEventEmitters = function () { - if (this.listeners) { - var me = this; - util.forEach(this.listeners, function (listeners, event) { - if (!me.emitters) { - me.emitters = {}; - } - if (!(event in me.emitters)) { - // create event - var frame = me.frame; - if (frame) { - //console.log('Created a listener for event ' + event + ' on component ' + me.id); // TODO: cleanup logging - var callback = function(event) { - listeners.forEach(function (listener) { - // TODO: filter on event target! - listener(event); - }); - }; - me.emitters[event] = callback; - - if (!me.hammer) { - me.hammer = Hammer(frame, { - prevent_default: true - }); - } - me.hammer.on(event, callback); - } - } - }); - - // TODO: be able to delete event listeners - // TODO: be able to move event listeners to a parent when available - } -}; - -/** - * A horizontal time axis - * @param {Component} parent - * @param {Component[]} [depends] Components on which this components depends - * (except for the parent) - * @param {Object} [options] See TimeAxis.setOptions for the available - * options. - * @constructor TimeAxis - * @extends Component - */ -function TimeAxis (parent, depends, options) { - this.id = util.randomUUID(); - this.parent = parent; - this.depends = depends; - - this.dom = { - majorLines: [], - majorTexts: [], - minorLines: [], - minorTexts: [], - redundant: { - majorLines: [], - majorTexts: [], - minorLines: [], - minorTexts: [] - } - }; - this.props = { - range: { - start: 0, - end: 0, - minimumStep: 0 - }, - lineTop: 0 - }; - - this.options = options || {}; - this.defaultOptions = { - orientation: 'bottom', // supported: 'top', 'bottom' - // TODO: implement timeaxis orientations 'left' and 'right' - showMinorLabels: true, - showMajorLabels: true - }; - - this.conversion = null; - this.range = null; -} - -TimeAxis.prototype = new Component(); - -// TODO: comment options -TimeAxis.prototype.setOptions = Component.prototype.setOptions; - -/** - * Set a range (start and end) - * @param {Range | Object} range A Range or an object containing start and end. - */ -TimeAxis.prototype.setRange = function (range) { - if (!(range instanceof Range) && (!range || !range.start || !range.end)) { - throw new TypeError('Range must be an instance of Range, ' + - 'or an object containing start and end.'); - } - this.range = range; -}; - -/** - * Convert a position on screen (pixels) to a datetime - * @param {int} x Position on the screen in pixels - * @return {Date} time The datetime the corresponds with given position x - */ -TimeAxis.prototype.toTime = function(x) { - var conversion = this.conversion; - return new Date(x / conversion.scale + conversion.offset); -}; - -/** - * Convert a datetime (Date object) into a position on the screen - * @param {Date} time A date - * @return {int} x The position on the screen in pixels which corresponds - * with the given date. - * @private - */ -TimeAxis.prototype.toScreen = function(time) { - var conversion = this.conversion; - return (time.valueOf() - conversion.offset) * conversion.scale; -}; - -/** - * Repaint the component - * @return {Boolean} changed - */ -TimeAxis.prototype.repaint = function () { - var changed = 0, - update = util.updateProperty, - asSize = util.option.asSize, - options = this.options, - orientation = this.getOption('orientation'), - props = this.props, - step = this.step; - - var frame = this.frame; - if (!frame) { - frame = document.createElement('div'); - this.frame = frame; - changed += 1; - } - frame.className = 'axis'; - // TODO: custom className? - - if (!frame.parentNode) { - if (!this.parent) { - throw new Error('Cannot repaint time axis: no parent attached'); - } - var parentContainer = this.parent.getContainer(); - if (!parentContainer) { - throw new Error('Cannot repaint time axis: parent has no container element'); - } - parentContainer.appendChild(frame); - - changed += 1; - } - - var parent = frame.parentNode; - if (parent) { - var beforeChild = frame.nextSibling; - parent.removeChild(frame); // take frame offline while updating (is almost twice as fast) - - var defaultTop = (orientation == 'bottom' && this.props.parentHeight && this.height) ? - (this.props.parentHeight - this.height) + 'px' : - '0px'; - changed += update(frame.style, 'top', asSize(options.top, defaultTop)); - changed += update(frame.style, 'left', asSize(options.left, '0px')); - changed += update(frame.style, 'width', asSize(options.width, '100%')); - changed += update(frame.style, 'height', asSize(options.height, this.height + 'px')); - - // get characters width and height - this._repaintMeasureChars(); - - if (this.step) { - this._repaintStart(); - - step.first(); - var xFirstMajorLabel = undefined; - var max = 0; - while (step.hasNext() && max < 1000) { - max++; - var cur = step.getCurrent(), - x = this.toScreen(cur), - isMajor = step.isMajor(); - - // TODO: lines must have a width, such that we can create css backgrounds - - if (this.getOption('showMinorLabels')) { - this._repaintMinorText(x, step.getLabelMinor()); - } - - if (isMajor && this.getOption('showMajorLabels')) { - if (x > 0) { - if (xFirstMajorLabel == undefined) { - xFirstMajorLabel = x; - } - this._repaintMajorText(x, step.getLabelMajor()); - } - this._repaintMajorLine(x); - } - else { - this._repaintMinorLine(x); - } - - step.next(); - } - - // create a major label on the left when needed - if (this.getOption('showMajorLabels')) { - var leftTime = this.toTime(0), - leftText = step.getLabelMajor(leftTime), - widthText = leftText.length * (props.majorCharWidth || 10) + 10; // upper bound estimation - - if (xFirstMajorLabel == undefined || widthText < xFirstMajorLabel) { - this._repaintMajorText(0, leftText); - } - } - - this._repaintEnd(); - } - - this._repaintLine(); - - // put frame online again - if (beforeChild) { - parent.insertBefore(frame, beforeChild); - } - else { - parent.appendChild(frame) - } - } - - return (changed > 0); -}; - -/** - * Start a repaint. Move all DOM elements to a redundant list, where they - * can be picked for re-use, or can be cleaned up in the end - * @private - */ -TimeAxis.prototype._repaintStart = function () { - var dom = this.dom, - redundant = dom.redundant; - - redundant.majorLines = dom.majorLines; - redundant.majorTexts = dom.majorTexts; - redundant.minorLines = dom.minorLines; - redundant.minorTexts = dom.minorTexts; - - dom.majorLines = []; - dom.majorTexts = []; - dom.minorLines = []; - dom.minorTexts = []; -}; - -/** - * End a repaint. Cleanup leftover DOM elements in the redundant list - * @private - */ -TimeAxis.prototype._repaintEnd = function () { - util.forEach(this.dom.redundant, function (arr) { - while (arr.length) { - var elem = arr.pop(); - if (elem && elem.parentNode) { - elem.parentNode.removeChild(elem); - } - } - }); -}; - - -/** - * Create a minor label for the axis at position x - * @param {Number} x - * @param {String} text - * @private - */ -TimeAxis.prototype._repaintMinorText = function (x, text) { - // reuse redundant label - var label = this.dom.redundant.minorTexts.shift(); - - if (!label) { - // create new label - var content = document.createTextNode(''); - label = document.createElement('div'); - label.appendChild(content); - label.className = 'text minor'; - this.frame.appendChild(label); - } - this.dom.minorTexts.push(label); - - label.childNodes[0].nodeValue = text; - label.style.left = x + 'px'; - label.style.top = this.props.minorLabelTop + 'px'; - //label.title = title; // TODO: this is a heavy operation -}; - -/** - * Create a Major label for the axis at position x - * @param {Number} x - * @param {String} text - * @private - */ -TimeAxis.prototype._repaintMajorText = function (x, text) { - // reuse redundant label - var label = this.dom.redundant.majorTexts.shift(); - - if (!label) { - // create label - var content = document.createTextNode(text); - label = document.createElement('div'); - label.className = 'text major'; - label.appendChild(content); - this.frame.appendChild(label); - } - this.dom.majorTexts.push(label); - - label.childNodes[0].nodeValue = text; - label.style.top = this.props.majorLabelTop + 'px'; - label.style.left = x + 'px'; - //label.title = title; // TODO: this is a heavy operation -}; - -/** - * Create a minor line for the axis at position x - * @param {Number} x - * @private - */ -TimeAxis.prototype._repaintMinorLine = function (x) { - // reuse redundant line - var line = this.dom.redundant.minorLines.shift(); - - if (!line) { - // create vertical line - line = document.createElement('div'); - line.className = 'grid vertical minor'; - this.frame.appendChild(line); - } - this.dom.minorLines.push(line); - - var props = this.props; - line.style.top = props.minorLineTop + 'px'; - line.style.height = props.minorLineHeight + 'px'; - line.style.left = (x - props.minorLineWidth / 2) + 'px'; -}; - -/** - * Create a Major line for the axis at position x - * @param {Number} x - * @private - */ -TimeAxis.prototype._repaintMajorLine = function (x) { - // reuse redundant line - var line = this.dom.redundant.majorLines.shift(); - - if (!line) { - // create vertical line - line = document.createElement('DIV'); - line.className = 'grid vertical major'; - this.frame.appendChild(line); - } - this.dom.majorLines.push(line); - - var props = this.props; - line.style.top = props.majorLineTop + 'px'; - line.style.left = (x - props.majorLineWidth / 2) + 'px'; - line.style.height = props.majorLineHeight + 'px'; -}; - - -/** - * Repaint the horizontal line for the axis - * @private - */ -TimeAxis.prototype._repaintLine = function() { - var line = this.dom.line, - frame = this.frame, - options = this.options; - - // line before all axis elements - if (this.getOption('showMinorLabels') || this.getOption('showMajorLabels')) { - if (line) { - // put this line at the end of all childs - frame.removeChild(line); - frame.appendChild(line); - } - else { - // create the axis line - line = document.createElement('div'); - line.className = 'grid horizontal major'; - frame.appendChild(line); - this.dom.line = line; - } - - line.style.top = this.props.lineTop + 'px'; - } - else { - if (line && line.parentElement) { - frame.removeChild(line.line); - delete this.dom.line; - } - } -}; - -/** - * Create characters used to determine the size of text on the axis - * @private - */ -TimeAxis.prototype._repaintMeasureChars = function () { - // calculate the width and height of a single character - // this is used to calculate the step size, and also the positioning of the - // axis - var dom = this.dom, - text; - - if (!dom.measureCharMinor) { - text = document.createTextNode('0'); - var measureCharMinor = document.createElement('DIV'); - measureCharMinor.className = 'text minor measure'; - measureCharMinor.appendChild(text); - this.frame.appendChild(measureCharMinor); - - dom.measureCharMinor = measureCharMinor; - } - - if (!dom.measureCharMajor) { - text = document.createTextNode('0'); - var measureCharMajor = document.createElement('DIV'); - measureCharMajor.className = 'text major measure'; - measureCharMajor.appendChild(text); - this.frame.appendChild(measureCharMajor); - - dom.measureCharMajor = measureCharMajor; - } -}; - -/** - * Reflow the component - * @return {Boolean} resized - */ -TimeAxis.prototype.reflow = function () { - var changed = 0, - update = util.updateProperty, - frame = this.frame, - range = this.range; - - if (!range) { - throw new Error('Cannot repaint time axis: no range configured'); - } - - if (frame) { - changed += update(this, 'top', frame.offsetTop); - changed += update(this, 'left', frame.offsetLeft); - - // calculate size of a character - var props = this.props, - showMinorLabels = this.getOption('showMinorLabels'), - showMajorLabels = this.getOption('showMajorLabels'), - measureCharMinor = this.dom.measureCharMinor, - measureCharMajor = this.dom.measureCharMajor; - if (measureCharMinor) { - props.minorCharHeight = measureCharMinor.clientHeight; - props.minorCharWidth = measureCharMinor.clientWidth; - } - if (measureCharMajor) { - props.majorCharHeight = measureCharMajor.clientHeight; - props.majorCharWidth = measureCharMajor.clientWidth; - } - - var parentHeight = frame.parentNode ? frame.parentNode.offsetHeight : 0; - if (parentHeight != props.parentHeight) { - props.parentHeight = parentHeight; - changed += 1; - } - switch (this.getOption('orientation')) { - case 'bottom': - props.minorLabelHeight = showMinorLabels ? props.minorCharHeight : 0; - props.majorLabelHeight = showMajorLabels ? props.majorCharHeight : 0; - - props.minorLabelTop = 0; - props.majorLabelTop = props.minorLabelTop + props.minorLabelHeight; - - props.minorLineTop = -this.top; - props.minorLineHeight = Math.max(this.top + props.majorLabelHeight, 0); - props.minorLineWidth = 1; // TODO: really calculate width - - props.majorLineTop = -this.top; - props.majorLineHeight = Math.max(this.top + props.minorLabelHeight + props.majorLabelHeight, 0); - props.majorLineWidth = 1; // TODO: really calculate width - - props.lineTop = 0; - - break; - - case 'top': - props.minorLabelHeight = showMinorLabels ? props.minorCharHeight : 0; - props.majorLabelHeight = showMajorLabels ? props.majorCharHeight : 0; - - props.majorLabelTop = 0; - props.minorLabelTop = props.majorLabelTop + props.majorLabelHeight; - - props.minorLineTop = props.minorLabelTop; - props.minorLineHeight = Math.max(parentHeight - props.majorLabelHeight - this.top); - props.minorLineWidth = 1; // TODO: really calculate width - - props.majorLineTop = 0; - props.majorLineHeight = Math.max(parentHeight - this.top); - props.majorLineWidth = 1; // TODO: really calculate width - - props.lineTop = props.majorLabelHeight + props.minorLabelHeight; - - break; - - default: - throw new Error('Unkown orientation "' + this.getOption('orientation') + '"'); - } - - var height = props.minorLabelHeight + props.majorLabelHeight; - changed += update(this, 'width', frame.offsetWidth); - changed += update(this, 'height', height); - - // calculate range and step - this._updateConversion(); - - var start = util.convert(range.start, 'Number'), - end = util.convert(range.end, 'Number'), - minimumStep = this.toTime((props.minorCharWidth || 10) * 5).valueOf() - -this.toTime(0).valueOf(); - this.step = new TimeStep(new Date(start), new Date(end), minimumStep); - changed += update(props.range, 'start', start); - changed += update(props.range, 'end', end); - changed += update(props.range, 'minimumStep', minimumStep.valueOf()); - } - - return (changed > 0); -}; - -/** - * Calculate the scale and offset to convert a position on screen to the - * corresponding date and vice versa. - * After the method _updateConversion is executed once, the methods toTime - * and toScreen can be used. - * @private - */ -TimeAxis.prototype._updateConversion = function() { - var range = this.range; - if (!range) { - throw new Error('No range configured'); - } - - if (range.conversion) { - this.conversion = range.conversion(this.width); - } - else { - this.conversion = Range.conversion(range.start, range.end, this.width); - } -}; - -/** - * A current time bar - * @param {Component} parent - * @param {Component[]} [depends] Components on which this components depends - * (except for the parent) - * @param {Object} [options] Available parameters: - * {Boolean} [showCurrentTime] - * @constructor CurrentTime - * @extends Component - */ - -function CurrentTime (parent, depends, options) { - this.id = util.randomUUID(); - this.parent = parent; - this.depends = depends; - - this.options = options || {}; - this.defaultOptions = { - showCurrentTime: false - }; -} - -CurrentTime.prototype = new Component(); - -CurrentTime.prototype.setOptions = Component.prototype.setOptions; - -/** - * Get the container element of the bar, which can be used by a child to - * add its own widgets. - * @returns {HTMLElement} container - */ -CurrentTime.prototype.getContainer = function () { - return this.frame; -}; - -/** - * Repaint the component - * @return {Boolean} changed - */ -CurrentTime.prototype.repaint = function () { - var bar = this.frame, - parent = this.parent, - parentContainer = parent.parent.getContainer(); - - if (!parent) { - throw new Error('Cannot repaint bar: no parent attached'); - } - - if (!parentContainer) { - throw new Error('Cannot repaint bar: parent has no container element'); - } - - if (!this.getOption('showCurrentTime')) { - if (bar) { - parentContainer.removeChild(bar); - delete this.frame; - } - - return; - } - - if (!bar) { - bar = document.createElement('div'); - bar.className = 'currenttime'; - bar.style.position = 'absolute'; - bar.style.top = '0px'; - bar.style.height = '100%'; - - parentContainer.appendChild(bar); - this.frame = bar; - } - - if (!parent.conversion) { - parent._updateConversion(); - } - - var now = new Date(); - var x = parent.toScreen(now); - - bar.style.left = x + 'px'; - bar.title = 'Current time: ' + now; - - // start a timer to adjust for the new time - if (this.currentTimeTimer !== undefined) { - clearTimeout(this.currentTimeTimer); - delete this.currentTimeTimer; - } - - var timeline = this; - var interval = 1 / parent.conversion.scale / 2; - - if (interval < 30) { - interval = 30; - } - - this.currentTimeTimer = setTimeout(function() { - timeline.repaint(); - }, interval); - - return false; -}; - -/** - * A custom time bar - * @param {Component} parent - * @param {Component[]} [depends] Components on which this components depends - * (except for the parent) - * @param {Object} [options] Available parameters: - * {Boolean} [showCustomTime] - * @constructor CustomTime - * @extends Component - */ - -function CustomTime (parent, depends, options) { - this.id = util.randomUUID(); - this.parent = parent; - this.depends = depends; - - this.options = options || {}; - this.defaultOptions = { - showCustomTime: false - }; - - this.listeners = []; - this.customTime = new Date(); -} - -CustomTime.prototype = new Component(); - -CustomTime.prototype.setOptions = Component.prototype.setOptions; - -/** - * Get the container element of the bar, which can be used by a child to - * add its own widgets. - * @returns {HTMLElement} container - */ -CustomTime.prototype.getContainer = function () { - return this.frame; -}; - -/** - * Repaint the component - * @return {Boolean} changed - */ -CustomTime.prototype.repaint = function () { - var bar = this.frame, - parent = this.parent, - parentContainer = parent.parent.getContainer(); - - if (!parent) { - throw new Error('Cannot repaint bar: no parent attached'); - } - - if (!parentContainer) { - throw new Error('Cannot repaint bar: parent has no container element'); - } - - if (!this.getOption('showCustomTime')) { - if (bar) { - parentContainer.removeChild(bar); - delete this.frame; - } - - return; - } - - if (!bar) { - bar = document.createElement('div'); - bar.className = 'customtime'; - bar.style.position = 'absolute'; - bar.style.top = '0px'; - bar.style.height = '100%'; - - parentContainer.appendChild(bar); - - var drag = document.createElement('div'); - drag.style.position = 'relative'; - drag.style.top = '0px'; - drag.style.left = '-10px'; - drag.style.height = '100%'; - drag.style.width = '20px'; - bar.appendChild(drag); - - this.frame = bar; - - this.subscribe(this, 'movetime'); - } - - if (!parent.conversion) { - parent._updateConversion(); - } - - var x = parent.toScreen(this.customTime); - - bar.style.left = x + 'px'; - bar.title = 'Time: ' + this.customTime; - - return false; -}; - -/** - * Set custom time. - * @param {Date} time - */ -CustomTime.prototype._setCustomTime = function(time) { - this.customTime = new Date(time.valueOf()); - this.repaint(); -}; - -/** - * Retrieve the current custom time. - * @return {Date} customTime - */ -CustomTime.prototype._getCustomTime = function() { - return new Date(this.customTime.valueOf()); -}; - -/** - * Add listeners for mouse and touch events to the component - * @param {Component} component - */ -CustomTime.prototype.subscribe = function (component, event) { - var me = this; - var listener = { - component: component, - event: event, - callback: function (event) { - me._onMouseDown(event, listener); - }, - params: {} - }; - - component.on('mousedown', listener.callback); - me.listeners.push(listener); - -}; - -/** - * Event handler - * @param {String} event name of the event, for example 'click', 'mousemove' - * @param {function} callback callback handler, invoked with the raw HTML Event - * as parameter. - */ -CustomTime.prototype.on = function (event, callback) { - var bar = this.frame; - if (!bar) { - throw new Error('Cannot add event listener: no parent attached'); - } - - events.addListener(this, event, callback); - util.addEventListener(bar, event, callback); -}; - -/** - * Start moving horizontally - * @param {Event} event - * @param {Object} listener Listener containing the component and params - * @private - */ -CustomTime.prototype._onMouseDown = function(event, listener) { - event = event || window.event; - var params = listener.params; - - // only react on left mouse button down - var leftButtonDown = event.which ? (event.which == 1) : (event.button == 1); - if (!leftButtonDown) { - return; - } - - // get mouse position - params.mouseX = util.getPageX(event); - params.moved = false; - - params.customTime = this.customTime; - - // add event listeners to handle moving the custom time bar - var me = this; - if (!params.onMouseMove) { - params.onMouseMove = function (event) { - me._onMouseMove(event, listener); - }; - util.addEventListener(document, 'mousemove', params.onMouseMove); - } - if (!params.onMouseUp) { - params.onMouseUp = function (event) { - me._onMouseUp(event, listener); - }; - util.addEventListener(document, 'mouseup', params.onMouseUp); - } - - util.stopPropagation(event); - util.preventDefault(event); -}; - -/** - * Perform moving operating. - * This function activated from within the funcion CustomTime._onMouseDown(). - * @param {Event} event - * @param {Object} listener - * @private - */ -CustomTime.prototype._onMouseMove = function (event, listener) { - event = event || window.event; - var params = listener.params; - var parent = this.parent; - - // calculate change in mouse position - var mouseX = util.getPageX(event); - - if (params.mouseX === undefined) { - params.mouseX = mouseX; - } - - var diff = mouseX - params.mouseX; - - // if mouse movement is big enough, register it as a "moved" event - if (Math.abs(diff) >= 1) { - params.moved = true; - } - - var x = parent.toScreen(params.customTime); - var xnew = x + diff; - var time = parent.toTime(xnew); - this._setCustomTime(time); - - // fire a timechange event - events.trigger(this, 'timechange', {customTime: this.customTime}); - - util.preventDefault(event); -}; - -/** - * Stop moving operating. - * This function activated from within the function CustomTime._onMouseDown(). - * @param {event} event - * @param {Object} listener - * @private - */ -CustomTime.prototype._onMouseUp = function (event, listener) { - event = event || window.event; - var params = listener.params; - - // remove event listeners here, important for Safari - if (params.onMouseMove) { - util.removeEventListener(document, 'mousemove', params.onMouseMove); - params.onMouseMove = null; - } - if (params.onMouseUp) { - util.removeEventListener(document, 'mouseup', params.onMouseUp); - params.onMouseUp = null; - } - - if (params.moved) { - // fire a timechanged event - events.trigger(this, 'timechanged', {customTime: this.customTime}); - } -}; - -/** - * An ItemSet holds a set of items and ranges which can be displayed in a - * range. The width is determined by the parent of the ItemSet, and the height - * is determined by the size of the items. - * @param {Component} parent - * @param {Component[]} [depends] Components on which this components depends - * (except for the parent) - * @param {Object} [options] See ItemSet.setOptions for the available - * options. - * @constructor ItemSet - * @extends Panel - */ -// TODO: improve performance by replacing all Array.forEach with a for loop -function ItemSet(parent, depends, options) { - this.id = util.randomUUID(); - this.parent = parent; - this.depends = depends; - - // one options object is shared by this itemset and all its items - this.options = options || {}; - this.defaultOptions = { - type: 'box', - align: 'center', - orientation: 'bottom', - margin: { - axis: 20, - item: 10 - }, - padding: 5 - }; - - this.dom = {}; - - var me = this; - this.itemsData = null; // DataSet - this.range = null; // Range or Object {start: number, end: number} - - this.listeners = { - 'add': function (event, params, senderId) { - if (senderId != me.id) { - me._onAdd(params.items); - } - }, - 'update': function (event, params, senderId) { - if (senderId != me.id) { - me._onUpdate(params.items); - } - }, - 'remove': function (event, params, senderId) { - if (senderId != me.id) { - me._onRemove(params.items); - } - } - }; - - this.items = {}; // object with an Item for every data item - this.queue = {}; // queue with id/actions: 'add', 'update', 'delete' - this.stack = new Stack(this, Object.create(this.options)); - this.conversion = null; - - // TODO: ItemSet should also attach event listeners for rangechange and rangechanged, like timeaxis -} - -ItemSet.prototype = new Panel(); - -// available item types will be registered here -ItemSet.types = { - box: ItemBox, - range: ItemRange, - rangeoverflow: ItemRangeOverflow, - point: ItemPoint -}; - -/** - * Set options for the ItemSet. Existing options will be extended/overwritten. - * @param {Object} [options] The following options are available: - * {String | function} [className] - * class name for the itemset - * {String} [type] - * Default type for the items. Choose from 'box' - * (default), 'point', or 'range'. The default - * Style can be overwritten by individual items. - * {String} align - * Alignment for the items, only applicable for - * ItemBox. Choose 'center' (default), 'left', or - * 'right'. - * {String} orientation - * Orientation of the item set. Choose 'top' or - * 'bottom' (default). - * {Number} margin.axis - * Margin between the axis and the items in pixels. - * Default is 20. - * {Number} margin.item - * Margin between items in pixels. Default is 10. - * {Number} padding - * Padding of the contents of an item in pixels. - * Must correspond with the items css. Default is 5. - */ -ItemSet.prototype.setOptions = Component.prototype.setOptions; - -/** - * Set range (start and end). - * @param {Range | Object} range A Range or an object containing start and end. - */ -ItemSet.prototype.setRange = function setRange(range) { - if (!(range instanceof Range) && (!range || !range.start || !range.end)) { - throw new TypeError('Range must be an instance of Range, ' + - 'or an object containing start and end.'); - } - this.range = range; -}; - -/** - * Repaint the component - * @return {Boolean} changed - */ -ItemSet.prototype.repaint = function repaint() { - var changed = 0, - update = util.updateProperty, - asSize = util.option.asSize, - options = this.options, - orientation = this.getOption('orientation'), - defaultOptions = this.defaultOptions, - frame = this.frame; - - if (!frame) { - frame = document.createElement('div'); - frame.className = 'itemset'; - - var className = options.className; - if (className) { - util.addClassName(frame, util.option.asString(className)); - } - - // create background panel - var background = document.createElement('div'); - background.className = 'background'; - frame.appendChild(background); - this.dom.background = background; - - // create foreground panel - var foreground = document.createElement('div'); - foreground.className = 'foreground'; - frame.appendChild(foreground); - this.dom.foreground = foreground; - - // create axis panel - var axis = document.createElement('div'); - axis.className = 'itemset-axis'; - //frame.appendChild(axis); - this.dom.axis = axis; - - this.frame = frame; - changed += 1; - } - - if (!this.parent) { - throw new Error('Cannot repaint itemset: no parent attached'); - } - var parentContainer = this.parent.getContainer(); - if (!parentContainer) { - throw new Error('Cannot repaint itemset: parent has no container element'); - } - if (!frame.parentNode) { - parentContainer.appendChild(frame); - changed += 1; - } - if (!this.dom.axis.parentNode) { - parentContainer.appendChild(this.dom.axis); - changed += 1; - } - - // reposition frame - changed += update(frame.style, 'left', asSize(options.left, '0px')); - changed += update(frame.style, 'top', asSize(options.top, '0px')); - changed += update(frame.style, 'width', asSize(options.width, '100%')); - changed += update(frame.style, 'height', asSize(options.height, this.height + 'px')); - - // reposition axis - changed += update(this.dom.axis.style, 'left', asSize(options.left, '0px')); - changed += update(this.dom.axis.style, 'width', asSize(options.width, '100%')); - if (orientation == 'bottom') { - changed += update(this.dom.axis.style, 'top', (this.height + this.top) + 'px'); - } - else { // orientation == 'top' - changed += update(this.dom.axis.style, 'top', this.top + 'px'); - } - - this._updateConversion(); - - var me = this, - queue = this.queue, - itemsData = this.itemsData, - items = this.items, - dataOptions = { - // TODO: cleanup - // fields: [(itemsData && itemsData.fieldId || 'id'), 'start', 'end', 'content', 'type', 'className'] - }; - - // show/hide added/changed/removed items - Object.keys(queue).forEach(function (id) { - //var entry = queue[id]; - var action = queue[id]; - var item = items[id]; - //var item = entry.item; - //noinspection FallthroughInSwitchStatementJS - switch (action) { - case 'add': - case 'update': - var itemData = itemsData && itemsData.get(id, dataOptions); - - if (itemData) { - var type = itemData.type || - (itemData.start && itemData.end && 'range') || - options.type || - 'box'; - var constructor = ItemSet.types[type]; - - // TODO: how to handle items with invalid data? hide them and give a warning? or throw an error? - if (item) { - // update item - if (!constructor || !(item instanceof constructor)) { - // item type has changed, hide and delete the item - changed += item.hide(); - item = null; - } - else { - item.data = itemData; // TODO: create a method item.setData ? - changed++; - } - } - - if (!item) { - // create item - if (constructor) { - item = new constructor(me, itemData, options, defaultOptions); - changed++; - } - else { - throw new TypeError('Unknown item type "' + type + '"'); - } - } - - // force a repaint (not only a reposition) - item.repaint(); - - items[id] = item; - } - - // update queue - delete queue[id]; - break; - - case 'remove': - if (item) { - // remove DOM of the item - changed += item.hide(); - } - - // update lists - delete items[id]; - delete queue[id]; - break; - - default: - console.log('Error: unknown action "' + action + '"'); - } - }); - - // reposition all items. Show items only when in the visible area - util.forEach(this.items, function (item) { - if (item.visible) { - changed += item.show(); - item.reposition(); - } - else { - changed += item.hide(); - } - }); - - return (changed > 0); -}; - -/** - * Get the foreground container element - * @return {HTMLElement} foreground - */ -ItemSet.prototype.getForeground = function getForeground() { - return this.dom.foreground; -}; - -/** - * Get the background container element - * @return {HTMLElement} background - */ -ItemSet.prototype.getBackground = function getBackground() { - return this.dom.background; -}; - -/** - * Get the axis container element - * @return {HTMLElement} axis - */ -ItemSet.prototype.getAxis = function getAxis() { - return this.dom.axis; -}; - -/** - * Reflow the component - * @return {Boolean} resized - */ -ItemSet.prototype.reflow = function reflow () { - var changed = 0, - options = this.options, - marginAxis = options.margin && options.margin.axis || this.defaultOptions.margin.axis, - marginItem = options.margin && options.margin.item || this.defaultOptions.margin.item, - update = util.updateProperty, - asNumber = util.option.asNumber, - asSize = util.option.asSize, - frame = this.frame; - - if (frame) { - this._updateConversion(); - - util.forEach(this.items, function (item) { - changed += item.reflow(); - }); - - // TODO: stack.update should be triggered via an event, in stack itself - // TODO: only update the stack when there are changed items - this.stack.update(); - - var maxHeight = asNumber(options.maxHeight); - var fixedHeight = (asSize(options.height) != null); - var height; - if (fixedHeight) { - height = frame.offsetHeight; - } - else { - // height is not specified, determine the height from the height and positioned items - var visibleItems = this.stack.ordered; // TODO: not so nice way to get the filtered items - if (visibleItems.length) { - var min = visibleItems[0].top; - var max = visibleItems[0].top + visibleItems[0].height; - util.forEach(visibleItems, function (item) { - min = Math.min(min, item.top); - max = Math.max(max, (item.top + item.height)); - }); - height = (max - min) + marginAxis + marginItem; - } - else { - height = marginAxis + marginItem; - } - } - if (maxHeight != null) { - height = Math.min(height, maxHeight); - } - changed += update(this, 'height', height); - - // calculate height from items - changed += update(this, 'top', frame.offsetTop); - changed += update(this, 'left', frame.offsetLeft); - changed += update(this, 'width', frame.offsetWidth); - } - else { - changed += 1; - } - - return (changed > 0); -}; - -/** - * Hide this component from the DOM - * @return {Boolean} changed - */ -ItemSet.prototype.hide = function hide() { - var changed = false; - - // remove the DOM - if (this.frame && this.frame.parentNode) { - this.frame.parentNode.removeChild(this.frame); - changed = true; - } - if (this.dom.axis && this.dom.axis.parentNode) { - this.dom.axis.parentNode.removeChild(this.dom.axis); - changed = true; - } - - return changed; -}; - -/** - * Set items - * @param {vis.DataSet | null} items - */ -ItemSet.prototype.setItems = function setItems(items) { - var me = this, - ids, - oldItemsData = this.itemsData; - - // replace the dataset - if (!items) { - this.itemsData = null; - } - else if (items instanceof DataSet || items instanceof DataView) { - this.itemsData = items; - } - else { - throw new TypeError('Data must be an instance of DataSet'); - } - - if (oldItemsData) { - // unsubscribe from old dataset - util.forEach(this.listeners, function (callback, event) { - oldItemsData.unsubscribe(event, callback); - }); - - // remove all drawn items - ids = oldItemsData.getIds(); - this._onRemove(ids); - } - - if (this.itemsData) { - // subscribe to new dataset - var id = this.id; - util.forEach(this.listeners, function (callback, event) { - me.itemsData.subscribe(event, callback, id); - }); - - // draw all new items - ids = this.itemsData.getIds(); - this._onAdd(ids); - } -}; - -/** - * Get the current items items - * @returns {vis.DataSet | null} - */ -ItemSet.prototype.getItems = function getItems() { - return this.itemsData; -}; - -/** - * Handle updated items - * @param {Number[]} ids - * @private - */ -ItemSet.prototype._onUpdate = function _onUpdate(ids) { - this._toQueue('update', ids); -}; - -/** - * Handle changed items - * @param {Number[]} ids - * @private - */ -ItemSet.prototype._onAdd = function _onAdd(ids) { - this._toQueue('add', ids); -}; - -/** - * Handle removed items - * @param {Number[]} ids - * @private - */ -ItemSet.prototype._onRemove = function _onRemove(ids) { - this._toQueue('remove', ids); -}; - -/** - * Put items in the queue to be added/updated/remove - * @param {String} action can be 'add', 'update', 'remove' - * @param {Number[]} ids - */ -ItemSet.prototype._toQueue = function _toQueue(action, ids) { - var queue = this.queue; - ids.forEach(function (id) { - queue[id] = action; - }); - - if (this.controller) { - //this.requestReflow(); - this.requestRepaint(); - } -}; - -/** - * Calculate the scale and offset to convert a position on screen to the - * corresponding date and vice versa. - * After the method _updateConversion is executed once, the methods toTime - * and toScreen can be used. - * @private - */ -ItemSet.prototype._updateConversion = function _updateConversion() { - var range = this.range; - if (!range) { - throw new Error('No range configured'); - } - - if (range.conversion) { - this.conversion = range.conversion(this.width); - } - else { - this.conversion = Range.conversion(range.start, range.end, this.width); - } -}; - -/** - * Convert a position on screen (pixels) to a datetime - * Before this method can be used, the method _updateConversion must be - * executed once. - * @param {int} x Position on the screen in pixels - * @return {Date} time The datetime the corresponds with given position x - */ -ItemSet.prototype.toTime = function toTime(x) { - var conversion = this.conversion; - return new Date(x / conversion.scale + conversion.offset); -}; - -/** - * Convert a datetime (Date object) into a position on the screen - * Before this method can be used, the method _updateConversion must be - * executed once. - * @param {Date} time A date - * @return {int} x The position on the screen in pixels which corresponds - * with the given date. - */ -ItemSet.prototype.toScreen = function toScreen(time) { - var conversion = this.conversion; - return (time.valueOf() - conversion.offset) * conversion.scale; -}; - -/** - * @constructor Item - * @param {ItemSet} parent - * @param {Object} data Object containing (optional) parameters type, - * start, end, content, group, className. - * @param {Object} [options] Options to set initial property values - * @param {Object} [defaultOptions] default options - * // TODO: describe available options - */ -function Item (parent, data, options, defaultOptions) { - this.parent = parent; - this.data = data; - this.dom = null; - this.options = options || {}; - this.defaultOptions = defaultOptions || {}; - - this.selected = false; - this.visible = false; - this.top = 0; - this.left = 0; - this.width = 0; - this.height = 0; -} - -/** - * Select current item - */ -Item.prototype.select = function select() { - this.selected = true; -}; - -/** - * Unselect current item - */ -Item.prototype.unselect = function unselect() { - this.selected = false; -}; - -/** - * Show the Item in the DOM (when not already visible) - * @return {Boolean} changed - */ -Item.prototype.show = function show() { - return false; -}; - -/** - * Hide the Item from the DOM (when visible) - * @return {Boolean} changed - */ -Item.prototype.hide = function hide() { - return false; -}; - -/** - * Repaint the item - * @return {Boolean} changed - */ -Item.prototype.repaint = function repaint() { - // should be implemented by the item - return false; -}; - -/** - * Reflow the item - * @return {Boolean} resized - */ -Item.prototype.reflow = function reflow() { - // should be implemented by the item - return false; -}; - -/** - * Return the items width - * @return {Integer} width - */ -Item.prototype.getWidth = function getWidth() { - return this.width; -} - -/** - * @constructor ItemBox - * @extends Item - * @param {ItemSet} parent - * @param {Object} data Object containing parameters start - * content, className. - * @param {Object} [options] Options to set initial property values - * @param {Object} [defaultOptions] default options - * // TODO: describe available options - */ -function ItemBox (parent, data, options, defaultOptions) { - this.props = { - dot: { - left: 0, - top: 0, - width: 0, - height: 0 - }, - line: { - top: 0, - left: 0, - width: 0, - height: 0 - } - }; - - Item.call(this, parent, data, options, defaultOptions); -} - -ItemBox.prototype = new Item (null, null); - -/** - * Select the item - * @override - */ -ItemBox.prototype.select = function select() { - this.selected = true; - // TODO: select and unselect -}; - -/** - * Unselect the item - * @override - */ -ItemBox.prototype.unselect = function unselect() { - this.selected = false; - // TODO: select and unselect -}; - -/** - * Repaint the item - * @return {Boolean} changed - */ -ItemBox.prototype.repaint = function repaint() { - // TODO: make an efficient repaint - var changed = false; - var dom = this.dom; - - if (!dom) { - this._create(); - dom = this.dom; - changed = true; - } - - if (dom) { - if (!this.parent) { - throw new Error('Cannot repaint item: no parent attached'); - } - - if (!dom.box.parentNode) { - var foreground = this.parent.getForeground(); - if (!foreground) { - throw new Error('Cannot repaint time axis: ' + - 'parent has no foreground container element'); - } - foreground.appendChild(dom.box); - changed = true; - } - - if (!dom.line.parentNode) { - var background = this.parent.getBackground(); - if (!background) { - throw new Error('Cannot repaint time axis: ' + - 'parent has no background container element'); - } - background.appendChild(dom.line); - changed = true; - } - - if (!dom.dot.parentNode) { - var axis = this.parent.getAxis(); - if (!background) { - throw new Error('Cannot repaint time axis: ' + - 'parent has no axis container element'); - } - axis.appendChild(dom.dot); - changed = true; - } - - // update contents - if (this.data.content != this.content) { - this.content = this.data.content; - if (this.content instanceof Element) { - dom.content.innerHTML = ''; - dom.content.appendChild(this.content); - } - else if (this.data.content != undefined) { - dom.content.innerHTML = this.content; - } - else { - throw new Error('Property "content" missing in item ' + this.data.id); - } - changed = true; - } - - // update class - var className = (this.data.className? ' ' + this.data.className : '') + - (this.selected ? ' selected' : ''); - if (this.className != className) { - this.className = className; - dom.box.className = 'item box' + className; - dom.line.className = 'item line' + className; - dom.dot.className = 'item dot' + className; - changed = true; - } - } - - return changed; -}; - -/** - * Show the item in the DOM (when not already visible). The items DOM will - * be created when needed. - * @return {Boolean} changed - */ -ItemBox.prototype.show = function show() { - if (!this.dom || !this.dom.box.parentNode) { - return this.repaint(); - } - else { - return false; - } -}; - -/** - * Hide the item from the DOM (when visible) - * @return {Boolean} changed - */ -ItemBox.prototype.hide = function hide() { - var changed = false, - dom = this.dom; - if (dom) { - if (dom.box.parentNode) { - dom.box.parentNode.removeChild(dom.box); - changed = true; - } - if (dom.line.parentNode) { - dom.line.parentNode.removeChild(dom.line); - } - if (dom.dot.parentNode) { - dom.dot.parentNode.removeChild(dom.dot); - } - } - return changed; -}; - -/** - * Reflow the item: calculate its actual size and position from the DOM - * @return {boolean} resized returns true if the axis is resized - * @override - */ -ItemBox.prototype.reflow = function reflow() { - var changed = 0, - update, - dom, - props, - options, - margin, - start, - align, - orientation, - top, - left, - data, - range; - - if (this.data.start == undefined) { - throw new Error('Property "start" missing in item ' + this.data.id); - } - - data = this.data; - range = this.parent && this.parent.range; - if (data && range) { - // TODO: account for the width of the item - var interval = (range.end - range.start); - this.visible = (data.start > range.start - interval) && (data.start < range.end + interval); - } - else { - this.visible = false; - } - - if (this.visible) { - dom = this.dom; - if (dom) { - update = util.updateProperty; - props = this.props; - options = this.options; - start = this.parent.toScreen(this.data.start); - align = options.align || this.defaultOptions.align; - margin = options.margin && options.margin.axis || this.defaultOptions.margin.axis; - orientation = options.orientation || this.defaultOptions.orientation; - - changed += update(props.dot, 'height', dom.dot.offsetHeight); - changed += update(props.dot, 'width', dom.dot.offsetWidth); - changed += update(props.line, 'width', dom.line.offsetWidth); - changed += update(props.line, 'height', dom.line.offsetHeight); - changed += update(props.line, 'top', dom.line.offsetTop); - changed += update(this, 'width', dom.box.offsetWidth); - changed += update(this, 'height', dom.box.offsetHeight); - if (align == 'right') { - left = start - this.width; - } - else if (align == 'left') { - left = start; - } - else { - // default or 'center' - left = start - this.width / 2; - } - changed += update(this, 'left', left); - - changed += update(props.line, 'left', start - props.line.width / 2); - changed += update(props.dot, 'left', start - props.dot.width / 2); - changed += update(props.dot, 'top', -props.dot.height / 2); - if (orientation == 'top') { - top = margin; - - changed += update(this, 'top', top); - } - else { - // default or 'bottom' - var parentHeight = this.parent.height; - top = parentHeight - this.height - margin; - - changed += update(this, 'top', top); - } - } - else { - changed += 1; - } - } - - return (changed > 0); -}; - -/** - * Create an items DOM - * @private - */ -ItemBox.prototype._create = function _create() { - var dom = this.dom; - if (!dom) { - this.dom = dom = {}; - - // create the box - dom.box = document.createElement('DIV'); - // className is updated in repaint() - - // contents box (inside the background box). used for making margins - dom.content = document.createElement('DIV'); - dom.content.className = 'content'; - dom.box.appendChild(dom.content); - - // line to axis - dom.line = document.createElement('DIV'); - dom.line.className = 'line'; - - // dot on axis - dom.dot = document.createElement('DIV'); - dom.dot.className = 'dot'; - } -}; - -/** - * Reposition the item, recalculate its left, top, and width, using the current - * range and size of the items itemset - * @override - */ -ItemBox.prototype.reposition = function reposition() { - var dom = this.dom, - props = this.props, - orientation = this.options.orientation || this.defaultOptions.orientation; - - if (dom) { - var box = dom.box, - line = dom.line, - dot = dom.dot; - - box.style.left = this.left + 'px'; - box.style.top = this.top + 'px'; - - line.style.left = props.line.left + 'px'; - if (orientation == 'top') { - line.style.top = 0 + 'px'; - line.style.height = this.top + 'px'; - } - else { - // orientation 'bottom' - line.style.top = (this.top + this.height) + 'px'; - line.style.height = Math.max(this.parent.height - this.top - this.height + - this.props.dot.height / 2, 0) + 'px'; - } - - dot.style.left = props.dot.left + 'px'; - dot.style.top = props.dot.top + 'px'; - } -}; - -/** - * @constructor ItemPoint - * @extends Item - * @param {ItemSet} parent - * @param {Object} data Object containing parameters start - * content, className. - * @param {Object} [options] Options to set initial property values - * @param {Object} [defaultOptions] default options - * // TODO: describe available options - */ -function ItemPoint (parent, data, options, defaultOptions) { - this.props = { - dot: { - top: 0, - width: 0, - height: 0 - }, - content: { - height: 0, - marginLeft: 0 - } - }; - - Item.call(this, parent, data, options, defaultOptions); -} - -ItemPoint.prototype = new Item (null, null); - -/** - * Select the item - * @override - */ -ItemPoint.prototype.select = function select() { - this.selected = true; - // TODO: select and unselect -}; - -/** - * Unselect the item - * @override - */ -ItemPoint.prototype.unselect = function unselect() { - this.selected = false; - // TODO: select and unselect -}; - -/** - * Repaint the item - * @return {Boolean} changed - */ -ItemPoint.prototype.repaint = function repaint() { - // TODO: make an efficient repaint - var changed = false; - var dom = this.dom; - - if (!dom) { - this._create(); - dom = this.dom; - changed = true; - } - - if (dom) { - if (!this.parent) { - throw new Error('Cannot repaint item: no parent attached'); - } - var foreground = this.parent.getForeground(); - if (!foreground) { - throw new Error('Cannot repaint time axis: ' + - 'parent has no foreground container element'); - } - - if (!dom.point.parentNode) { - foreground.appendChild(dom.point); - foreground.appendChild(dom.point); - changed = true; - } - - // update contents - if (this.data.content != this.content) { - this.content = this.data.content; - if (this.content instanceof Element) { - dom.content.innerHTML = ''; - dom.content.appendChild(this.content); - } - else if (this.data.content != undefined) { - dom.content.innerHTML = this.content; - } - else { - throw new Error('Property "content" missing in item ' + this.data.id); - } - changed = true; - } - - // update class - var className = (this.data.className? ' ' + this.data.className : '') + - (this.selected ? ' selected' : ''); - if (this.className != className) { - this.className = className; - dom.point.className = 'item point' + className; - changed = true; - } - } - - return changed; -}; - -/** - * Show the item in the DOM (when not already visible). The items DOM will - * be created when needed. - * @return {Boolean} changed - */ -ItemPoint.prototype.show = function show() { - if (!this.dom || !this.dom.point.parentNode) { - return this.repaint(); - } - else { - return false; - } -}; - -/** - * Hide the item from the DOM (when visible) - * @return {Boolean} changed - */ -ItemPoint.prototype.hide = function hide() { - var changed = false, - dom = this.dom; - if (dom) { - if (dom.point.parentNode) { - dom.point.parentNode.removeChild(dom.point); - changed = true; - } - } - return changed; -}; - -/** - * Reflow the item: calculate its actual size from the DOM - * @return {boolean} resized returns true if the axis is resized - * @override - */ -ItemPoint.prototype.reflow = function reflow() { - var changed = 0, - update, - dom, - props, - options, - margin, - orientation, - start, - top, - data, - range; - - if (this.data.start == undefined) { - throw new Error('Property "start" missing in item ' + this.data.id); - } - - data = this.data; - range = this.parent && this.parent.range; - if (data && range) { - // TODO: account for the width of the item - var interval = (range.end - range.start); - this.visible = (data.start > range.start - interval) && (data.start < range.end); - } - else { - this.visible = false; - } - - if (this.visible) { - dom = this.dom; - if (dom) { - update = util.updateProperty; - props = this.props; - options = this.options; - orientation = options.orientation || this.defaultOptions.orientation; - margin = options.margin && options.margin.axis || this.defaultOptions.margin.axis; - start = this.parent.toScreen(this.data.start); - - changed += update(this, 'width', dom.point.offsetWidth); - changed += update(this, 'height', dom.point.offsetHeight); - changed += update(props.dot, 'width', dom.dot.offsetWidth); - changed += update(props.dot, 'height', dom.dot.offsetHeight); - changed += update(props.content, 'height', dom.content.offsetHeight); - - if (orientation == 'top') { - top = margin; - } - else { - // default or 'bottom' - var parentHeight = this.parent.height; - top = Math.max(parentHeight - this.height - margin, 0); - } - changed += update(this, 'top', top); - changed += update(this, 'left', start - props.dot.width / 2); - changed += update(props.content, 'marginLeft', 1.5 * props.dot.width); - //changed += update(props.content, 'marginRight', 0.5 * props.dot.width); // TODO - - changed += update(props.dot, 'top', (this.height - props.dot.height) / 2); - } - else { - changed += 1; - } - } - - return (changed > 0); -}; - -/** - * Create an items DOM - * @private - */ -ItemPoint.prototype._create = function _create() { - var dom = this.dom; - if (!dom) { - this.dom = dom = {}; - - // background box - dom.point = document.createElement('div'); - // className is updated in repaint() - - // contents box, right from the dot - dom.content = document.createElement('div'); - dom.content.className = 'content'; - dom.point.appendChild(dom.content); - - // dot at start - dom.dot = document.createElement('div'); - dom.dot.className = 'dot'; - dom.point.appendChild(dom.dot); - } -}; - -/** - * Reposition the item, recalculate its left, top, and width, using the current - * range and size of the items itemset - * @override - */ -ItemPoint.prototype.reposition = function reposition() { - var dom = this.dom, - props = this.props; - - if (dom) { - dom.point.style.top = this.top + 'px'; - dom.point.style.left = this.left + 'px'; - - dom.content.style.marginLeft = props.content.marginLeft + 'px'; - //dom.content.style.marginRight = props.content.marginRight + 'px'; // TODO - - dom.dot.style.top = props.dot.top + 'px'; - } -}; - -/** - * @constructor ItemRange - * @extends Item - * @param {ItemSet} parent - * @param {Object} data Object containing parameters start, end - * content, className. - * @param {Object} [options] Options to set initial property values - * @param {Object} [defaultOptions] default options - * // TODO: describe available options - */ -function ItemRange (parent, data, options, defaultOptions) { - this.props = { - content: { - left: 0, - width: 0 - } - }; - - Item.call(this, parent, data, options, defaultOptions); -} - -ItemRange.prototype = new Item (null, null); - -/** - * Select the item - * @override - */ -ItemRange.prototype.select = function select() { - this.selected = true; - // TODO: select and unselect -}; - -/** - * Unselect the item - * @override - */ -ItemRange.prototype.unselect = function unselect() { - this.selected = false; - // TODO: select and unselect -}; - -/** - * Repaint the item - * @return {Boolean} changed - */ -ItemRange.prototype.repaint = function repaint() { - // TODO: make an efficient repaint - var changed = false; - var dom = this.dom; - - if (!dom) { - this._create(); - dom = this.dom; - changed = true; - } - - if (dom) { - if (!this.parent) { - throw new Error('Cannot repaint item: no parent attached'); - } - var foreground = this.parent.getForeground(); - if (!foreground) { - throw new Error('Cannot repaint time axis: ' + - 'parent has no foreground container element'); - } - - if (!dom.box.parentNode) { - foreground.appendChild(dom.box); - changed = true; - } - - // update content - if (this.data.content != this.content) { - this.content = this.data.content; - if (this.content instanceof Element) { - dom.content.innerHTML = ''; - dom.content.appendChild(this.content); - } - else if (this.data.content != undefined) { - dom.content.innerHTML = this.content; - } - else { - throw new Error('Property "content" missing in item ' + this.data.id); - } - changed = true; - } - - // update class - var className = this.data.className ? (' ' + this.data.className) : ''; - if (this.className != className) { - this.className = className; - dom.box.className = 'item range' + className; - changed = true; - } - } - - return changed; -}; - -/** - * Show the item in the DOM (when not already visible). The items DOM will - * be created when needed. - * @return {Boolean} changed - */ -ItemRange.prototype.show = function show() { - if (!this.dom || !this.dom.box.parentNode) { - return this.repaint(); - } - else { - return false; - } -}; - -/** - * Hide the item from the DOM (when visible) - * @return {Boolean} changed - */ -ItemRange.prototype.hide = function hide() { - var changed = false, - dom = this.dom; - if (dom) { - if (dom.box.parentNode) { - dom.box.parentNode.removeChild(dom.box); - changed = true; - } - } - return changed; -}; - -/** - * Reflow the item: calculate its actual size from the DOM - * @return {boolean} resized returns true if the axis is resized - * @override - */ -ItemRange.prototype.reflow = function reflow() { - var changed = 0, - dom, - props, - options, - margin, - padding, - parent, - start, - end, - data, - range, - update, - box, - parentWidth, - contentLeft, - orientation, - top; - - if (this.data.start == undefined) { - throw new Error('Property "start" missing in item ' + this.data.id); - } - if (this.data.end == undefined) { - throw new Error('Property "end" missing in item ' + this.data.id); - } - - data = this.data; - range = this.parent && this.parent.range; - if (data && range) { - // TODO: account for the width of the item. Take some margin - this.visible = (data.start < range.end) && (data.end > range.start); - } - else { - this.visible = false; - } - - if (this.visible) { - dom = this.dom; - if (dom) { - props = this.props; - options = this.options; - parent = this.parent; - start = parent.toScreen(this.data.start); - end = parent.toScreen(this.data.end); - update = util.updateProperty; - box = dom.box; - parentWidth = parent.width; - orientation = options.orientation || this.defaultOptions.orientation; - margin = options.margin && options.margin.axis || this.defaultOptions.margin.axis; - padding = options.padding || this.defaultOptions.padding; - - changed += update(props.content, 'width', dom.content.offsetWidth); - - changed += update(this, 'height', box.offsetHeight); - - // limit the width of the this, as browsers cannot draw very wide divs - if (start < -parentWidth) { - start = -parentWidth; - } - if (end > 2 * parentWidth) { - end = 2 * parentWidth; - } - - // when range exceeds left of the window, position the contents at the left of the visible area - if (start < 0) { - contentLeft = Math.min(-start, - (end - start - props.content.width - 2 * padding)); - // TODO: remove the need for options.padding. it's terrible. - } - else { - contentLeft = 0; - } - changed += update(props.content, 'left', contentLeft); - - if (orientation == 'top') { - top = margin; - changed += update(this, 'top', top); - } - else { - // default or 'bottom' - top = parent.height - this.height - margin; - changed += update(this, 'top', top); - } - - changed += update(this, 'left', start); - changed += update(this, 'width', Math.max(end - start, 1)); // TODO: reckon with border width; - } - else { - changed += 1; - } - } - - return (changed > 0); -}; - -/** - * Create an items DOM - * @private - */ -ItemRange.prototype._create = function _create() { - var dom = this.dom; - if (!dom) { - this.dom = dom = {}; - // background box - dom.box = document.createElement('div'); - // className is updated in repaint() - - // contents box - dom.content = document.createElement('div'); - dom.content.className = 'content'; - dom.box.appendChild(dom.content); - } -}; - -/** - * Reposition the item, recalculate its left, top, and width, using the current - * range and size of the items itemset - * @override - */ -ItemRange.prototype.reposition = function reposition() { - var dom = this.dom, - props = this.props; - - if (dom) { - dom.box.style.top = this.top + 'px'; - dom.box.style.left = this.left + 'px'; - dom.box.style.width = this.width + 'px'; - - dom.content.style.left = props.content.left + 'px'; - } -}; - -/** - * @constructor ItemRangeOverflow - * @extends ItemRange - * @param {ItemSet} parent - * @param {Object} data Object containing parameters start, end - * content, className. - * @param {Object} [options] Options to set initial property values - * @param {Object} [defaultOptions] default options - * // TODO: describe available options - */ -function ItemRangeOverflow (parent, data, options, defaultOptions) { - this.props = { - content: { - left: 0, - width: 0 - } - }; - - ItemRange.call(this, parent, data, options, defaultOptions); -} - -ItemRangeOverflow.prototype = new ItemRange (null, null); - -/** - * Repaint the item - * @return {Boolean} changed - */ -ItemRangeOverflow.prototype.repaint = function repaint() { - // TODO: make an efficient repaint - var changed = false; - var dom = this.dom; - - if (!dom) { - this._create(); - dom = this.dom; - changed = true; - } - - if (dom) { - if (!this.parent) { - throw new Error('Cannot repaint item: no parent attached'); - } - var foreground = this.parent.getForeground(); - if (!foreground) { - throw new Error('Cannot repaint time axis: ' + - 'parent has no foreground container element'); - } - - if (!dom.box.parentNode) { - foreground.appendChild(dom.box); - changed = true; - } - - // update content - if (this.data.content != this.content) { - this.content = this.data.content; - if (this.content instanceof Element) { - dom.content.innerHTML = ''; - dom.content.appendChild(this.content); - } - else if (this.data.content != undefined) { - dom.content.innerHTML = this.content; - } - else { - throw new Error('Property "content" missing in item ' + this.data.id); - } - changed = true; - } - - // update class - var className = this.data.className ? (' ' + this.data.className) : ''; - if (this.className != className) { - this.className = className; - dom.box.className = 'item rangeoverflow' + className; - changed = true; - } - } - - return changed; -}; - -/** - * Return the items width - * @return {Number} width - */ -ItemRangeOverflow.prototype.getWidth = function getWidth() { - if (this.props.content !== undefined && this.width < this.props.content.width) - return this.props.content.width; - else - return this.width; -}; - -/** - * @constructor Group - * @param {GroupSet} parent - * @param {Number | String} groupId - * @param {Object} [options] Options to set initial property values - * // TODO: describe available options - * @extends Component - */ -function Group (parent, groupId, options) { - this.id = util.randomUUID(); - this.parent = parent; - - this.groupId = groupId; - this.itemset = null; // ItemSet - this.options = options || {}; - this.options.top = 0; - - this.props = { - label: { - width: 0, - height: 0 - } - }; - - this.top = 0; - this.left = 0; - this.width = 0; - this.height = 0; -} - -Group.prototype = new Component(); - -// TODO: comment -Group.prototype.setOptions = Component.prototype.setOptions; - -/** - * Get the container element of the panel, which can be used by a child to - * add its own widgets. - * @returns {HTMLElement} container - */ -Group.prototype.getContainer = function () { - return this.parent.getContainer(); -}; - -/** - * Set item set for the group. The group will create a view on the itemset, - * filtered by the groups id. - * @param {DataSet | DataView} items - */ -Group.prototype.setItems = function setItems(items) { - if (this.itemset) { - // remove current item set - this.itemset.hide(); - this.itemset.setItems(); - - this.parent.controller.remove(this.itemset); - this.itemset = null; - } - - if (items) { - var groupId = this.groupId; - - var itemsetOptions = Object.create(this.options); - this.itemset = new ItemSet(this, null, itemsetOptions); - this.itemset.setRange(this.parent.range); - - this.view = new DataView(items, { - filter: function (item) { - return item.group == groupId; - } - }); - this.itemset.setItems(this.view); - - this.parent.controller.add(this.itemset); - } -}; - -/** - * Repaint the item - * @return {Boolean} changed - */ -Group.prototype.repaint = function repaint() { - return false; -}; - -/** - * Reflow the item - * @return {Boolean} resized - */ -Group.prototype.reflow = function reflow() { - var changed = 0, - update = util.updateProperty; - - changed += update(this, 'top', this.itemset ? this.itemset.top : 0); - changed += update(this, 'height', this.itemset ? this.itemset.height : 0); - - // TODO: reckon with the height of the group label - - if (this.label) { - var inner = this.label.firstChild; - changed += update(this.props.label, 'width', inner.clientWidth); - changed += update(this.props.label, 'height', inner.clientHeight); - } - else { - changed += update(this.props.label, 'width', 0); - changed += update(this.props.label, 'height', 0); - } - - return (changed > 0); -}; - -/** - * An GroupSet holds a set of groups - * @param {Component} parent - * @param {Component[]} [depends] Components on which this components depends - * (except for the parent) - * @param {Object} [options] See GroupSet.setOptions for the available - * options. - * @constructor GroupSet - * @extends Panel - */ -function GroupSet(parent, depends, options) { - this.id = util.randomUUID(); - this.parent = parent; - this.depends = depends; - - this.options = options || {}; - - this.range = null; // Range or Object {start: number, end: number} - this.itemsData = null; // DataSet with items - this.groupsData = null; // DataSet with groups - - this.groups = {}; // map with groups - - this.dom = {}; - this.props = { - labels: { - width: 0 - } - }; - - // TODO: implement right orientation of the labels - - // changes in groups are queued key/value map containing id/action - this.queue = {}; - - var me = this; - this.listeners = { - 'add': function (event, params) { - me._onAdd(params.items); - }, - 'update': function (event, params) { - me._onUpdate(params.items); - }, - 'remove': function (event, params) { - me._onRemove(params.items); - } - }; -} - -GroupSet.prototype = new Panel(); - -/** - * Set options for the GroupSet. Existing options will be extended/overwritten. - * @param {Object} [options] The following options are available: - * {String | function} groupsOrder - * TODO: describe options - */ -GroupSet.prototype.setOptions = Component.prototype.setOptions; - -GroupSet.prototype.setRange = function (range) { - // TODO: implement setRange -}; - -/** - * Set items - * @param {vis.DataSet | null} items - */ -GroupSet.prototype.setItems = function setItems(items) { - this.itemsData = items; - - for (var id in this.groups) { - if (this.groups.hasOwnProperty(id)) { - var group = this.groups[id]; - group.setItems(items); - } - } -}; - -/** - * Get items - * @return {vis.DataSet | null} items - */ -GroupSet.prototype.getItems = function getItems() { - return this.itemsData; -}; - -/** - * Set range (start and end). - * @param {Range | Object} range A Range or an object containing start and end. - */ -GroupSet.prototype.setRange = function setRange(range) { - this.range = range; -}; - -/** - * Set groups - * @param {vis.DataSet} groups - */ -GroupSet.prototype.setGroups = function setGroups(groups) { - var me = this, - ids; - - // unsubscribe from current dataset - if (this.groupsData) { - util.forEach(this.listeners, function (callback, event) { - me.groupsData.unsubscribe(event, callback); - }); - - // remove all drawn groups - ids = this.groupsData.getIds(); - this._onRemove(ids); - } - - // replace the dataset - if (!groups) { - this.groupsData = null; - } - else if (groups instanceof DataSet) { - this.groupsData = groups; - } - else { - this.groupsData = new DataSet({ - convert: { - start: 'Date', - end: 'Date' - } - }); - this.groupsData.add(groups); - } - - if (this.groupsData) { - // subscribe to new dataset - var id = this.id; - util.forEach(this.listeners, function (callback, event) { - me.groupsData.subscribe(event, callback, id); - }); - - // draw all new groups - ids = this.groupsData.getIds(); - this._onAdd(ids); - } -}; - -/** - * Get groups - * @return {vis.DataSet | null} groups - */ -GroupSet.prototype.getGroups = function getGroups() { - return this.groupsData; -}; - -/** - * Repaint the component - * @return {Boolean} changed - */ -GroupSet.prototype.repaint = function repaint() { - var changed = 0, - i, id, group, label, - update = util.updateProperty, - asSize = util.option.asSize, - asElement = util.option.asElement, - options = this.options, - frame = this.dom.frame, - labels = this.dom.labels, - labelSet = this.dom.labelSet; - - // create frame - if (!this.parent) { - throw new Error('Cannot repaint groupset: no parent attached'); - } - var parentContainer = this.parent.getContainer(); - if (!parentContainer) { - throw new Error('Cannot repaint groupset: parent has no container element'); - } - if (!frame) { - frame = document.createElement('div'); - frame.className = 'groupset'; - this.dom.frame = frame; - - var className = options.className; - if (className) { - util.addClassName(frame, util.option.asString(className)); - } - - changed += 1; - } - if (!frame.parentNode) { - parentContainer.appendChild(frame); - changed += 1; - } - - // create labels - var labelContainer = asElement(options.labelContainer); - if (!labelContainer) { - throw new Error('Cannot repaint groupset: option "labelContainer" not defined'); - } - if (!labels) { - labels = document.createElement('div'); - labels.className = 'labels'; - this.dom.labels = labels; - } - if (!labelSet) { - labelSet = document.createElement('div'); - labelSet.className = 'label-set'; - labels.appendChild(labelSet); - this.dom.labelSet = labelSet; - } - if (!labels.parentNode || labels.parentNode != labelContainer) { - if (labels.parentNode) { - labels.parentNode.removeChild(labels.parentNode); - } - labelContainer.appendChild(labels); - } - - // reposition frame - changed += update(frame.style, 'height', asSize(options.height, this.height + 'px')); - changed += update(frame.style, 'top', asSize(options.top, '0px')); - changed += update(frame.style, 'left', asSize(options.left, '0px')); - changed += update(frame.style, 'width', asSize(options.width, '100%')); - - // reposition labels - changed += update(labelSet.style, 'top', asSize(options.top, '0px')); - changed += update(labelSet.style, 'height', asSize(options.height, this.height + 'px')); - - var me = this, - queue = this.queue, - groups = this.groups, - groupsData = this.groupsData; - - // show/hide added/changed/removed groups - var ids = Object.keys(queue); - if (ids.length) { - ids.forEach(function (id) { - var action = queue[id]; - var group = groups[id]; - - //noinspection FallthroughInSwitchStatementJS - switch (action) { - case 'add': - case 'update': - if (!group) { - var groupOptions = Object.create(me.options); - util.extend(groupOptions, { - height: null, - maxHeight: null - }); - - group = new Group(me, id, groupOptions); - group.setItems(me.itemsData); // attach items data - groups[id] = group; - - me.controller.add(group); - } - - // TODO: update group data - group.data = groupsData.get(id); - - delete queue[id]; - break; - - case 'remove': - if (group) { - group.setItems(); // detach items data - delete groups[id]; - - me.controller.remove(group); - } - - // update lists - delete queue[id]; - break; - - default: - console.log('Error: unknown action "' + action + '"'); - } - }); - - // the groupset depends on each of the groups - //this.depends = this.groups; // TODO: gives a circular reference through the parent - - // TODO: apply dependencies of the groupset - - // update the top positions of the groups in the correct order - var orderedGroups = this.groupsData.getIds({ - order: this.options.groupOrder - }); - for (i = 0; i < orderedGroups.length; i++) { - (function (group, prevGroup) { - var top = 0; - if (prevGroup) { - top = function () { - // TODO: top must reckon with options.maxHeight - return prevGroup.top + prevGroup.height; - } - } - group.setOptions({ - top: top - }); - })(groups[orderedGroups[i]], groups[orderedGroups[i - 1]]); - } - - // (re)create the labels - while (labelSet.firstChild) { - labelSet.removeChild(labelSet.firstChild); - } - for (i = 0; i < orderedGroups.length; i++) { - id = orderedGroups[i]; - label = this._createLabel(id); - labelSet.appendChild(label); - } - - changed++; - } - - // reposition the labels - // TODO: labels are not displayed correctly when orientation=='top' - // TODO: width of labelPanel is not immediately updated on a change in groups - for (id in groups) { - if (groups.hasOwnProperty(id)) { - group = groups[id]; - label = group.label; - if (label) { - label.style.top = group.top + 'px'; - label.style.height = group.height + 'px'; - } - } - } - - return (changed > 0); -}; - -/** - * Create a label for group with given id - * @param {Number} id - * @return {Element} label - * @private - */ -GroupSet.prototype._createLabel = function(id) { - var group = this.groups[id]; - var label = document.createElement('div'); - label.className = 'label'; - var inner = document.createElement('div'); - inner.className = 'inner'; - label.appendChild(inner); - - var content = group.data && group.data.content; - if (content instanceof Element) { - inner.appendChild(content); - } - else if (content != undefined) { - inner.innerHTML = content; - } - - var className = group.data && group.data.className; - if (className) { - util.addClassName(label, className); - } - - group.label = label; // TODO: not so nice, parking labels in the group this way!!! - - return label; -}; - -/** - * Get container element - * @return {HTMLElement} container - */ -GroupSet.prototype.getContainer = function getContainer() { - return this.dom.frame; -}; - -/** - * Get the width of the group labels - * @return {Number} width - */ -GroupSet.prototype.getLabelsWidth = function getContainer() { - return this.props.labels.width; -}; - -/** - * Reflow the component - * @return {Boolean} resized - */ -GroupSet.prototype.reflow = function reflow() { - var changed = 0, - id, group, - options = this.options, - update = util.updateProperty, - asNumber = util.option.asNumber, - asSize = util.option.asSize, - frame = this.dom.frame; - - if (frame) { - var maxHeight = asNumber(options.maxHeight); - var fixedHeight = (asSize(options.height) != null); - var height; - if (fixedHeight) { - height = frame.offsetHeight; - } - else { - // height is not specified, calculate the sum of the height of all groups - height = 0; - - for (id in this.groups) { - if (this.groups.hasOwnProperty(id)) { - group = this.groups[id]; - height += group.height; - } - } - } - if (maxHeight != null) { - height = Math.min(height, maxHeight); - } - changed += update(this, 'height', height); - - changed += update(this, 'top', frame.offsetTop); - changed += update(this, 'left', frame.offsetLeft); - changed += update(this, 'width', frame.offsetWidth); - } - - // calculate the maximum width of the labels - var width = 0; - for (id in this.groups) { - if (this.groups.hasOwnProperty(id)) { - group = this.groups[id]; - var labelWidth = group.props && group.props.label && group.props.label.width || 0; - width = Math.max(width, labelWidth); - } - } - changed += update(this.props.labels, 'width', width); - - return (changed > 0); -}; - -/** - * Hide the component from the DOM - * @return {Boolean} changed - */ -GroupSet.prototype.hide = function hide() { - if (this.dom.frame && this.dom.frame.parentNode) { - this.dom.frame.parentNode.removeChild(this.dom.frame); - return true; - } - else { - return false; - } -}; - -/** - * Show the component in the DOM (when not already visible). - * A repaint will be executed when the component is not visible - * @return {Boolean} changed - */ -GroupSet.prototype.show = function show() { - if (!this.dom.frame || !this.dom.frame.parentNode) { - return this.repaint(); - } - else { - return false; - } -}; - -/** - * Handle updated groups - * @param {Number[]} ids - * @private - */ -GroupSet.prototype._onUpdate = function _onUpdate(ids) { - this._toQueue(ids, 'update'); -}; - -/** - * Handle changed groups - * @param {Number[]} ids - * @private - */ -GroupSet.prototype._onAdd = function _onAdd(ids) { - this._toQueue(ids, 'add'); -}; - -/** - * Handle removed groups - * @param {Number[]} ids - * @private - */ -GroupSet.prototype._onRemove = function _onRemove(ids) { - this._toQueue(ids, 'remove'); -}; - -/** - * Put groups in the queue to be added/updated/remove - * @param {Number[]} ids - * @param {String} action can be 'add', 'update', 'remove' - */ -GroupSet.prototype._toQueue = function _toQueue(ids, action) { - var queue = this.queue; - ids.forEach(function (id) { - queue[id] = action; - }); - - if (this.controller) { - //this.requestReflow(); - this.requestRepaint(); - } -}; - -/** - * Create a timeline visualization - * @param {HTMLElement} container - * @param {vis.DataSet | Array | DataTable} [items] - * @param {Object} [options] See Timeline.setOptions for the available options. - * @constructor - */ -function Timeline (container, items, options) { - var me = this; - var now = moment().hours(0).minutes(0).seconds(0).milliseconds(0); - this.options = { - orientation: 'bottom', - min: null, - max: null, - zoomMin: 10, // milliseconds - zoomMax: 1000 * 60 * 60 * 24 * 365 * 10000, // milliseconds - // moveable: true, // TODO: option moveable - // zoomable: true, // TODO: option zoomable - showMinorLabels: true, - showMajorLabels: true, - showCurrentTime: false, - showCustomTime: false, - autoResize: false - }; - - // controller - this.controller = new Controller(); - - // root panel - if (!container) { - throw new Error('No container element provided'); - } - var rootOptions = Object.create(this.options); - rootOptions.height = function () { - // TODO: change to height - if (me.options.height) { - // fixed height - return me.options.height; - } - else { - // auto height - return (me.timeaxis.height + me.content.height) + 'px'; - } - }; - this.rootPanel = new RootPanel(container, rootOptions); - this.controller.add(this.rootPanel); - - // item panel - var itemOptions = Object.create(this.options); - itemOptions.left = function () { - return me.labelPanel.width; - }; - itemOptions.width = function () { - return me.rootPanel.width - me.labelPanel.width; - }; - itemOptions.top = null; - itemOptions.height = null; - this.itemPanel = new Panel(this.rootPanel, [], itemOptions); - this.controller.add(this.itemPanel); - - // label panel - var labelOptions = Object.create(this.options); - labelOptions.top = null; - labelOptions.left = null; - labelOptions.height = null; - labelOptions.width = function () { - if (me.content && typeof me.content.getLabelsWidth === 'function') { - return me.content.getLabelsWidth(); - } - else { - return 0; - } - }; - this.labelPanel = new Panel(this.rootPanel, [], labelOptions); - this.controller.add(this.labelPanel); - - // range - var rangeOptions = Object.create(this.options); - this.range = new Range(rangeOptions); - this.range.setRange( - now.clone().add('days', -3).valueOf(), - now.clone().add('days', 4).valueOf() - ); - - // TODO: reckon with options moveable and zoomable - this.range.subscribe(this.rootPanel, 'move', 'horizontal'); - this.range.subscribe(this.rootPanel, 'zoom', 'horizontal'); - this.range.on('rangechange', function () { - var force = true; - me.controller.requestReflow(force); - }); - this.range.on('rangechanged', function () { - var force = true; - me.controller.requestReflow(force); - }); - - // TODO: put the listeners in setOptions, be able to dynamically change with options moveable and zoomable - - // time axis - var timeaxisOptions = Object.create(rootOptions); - timeaxisOptions.range = this.range; - timeaxisOptions.left = null; - timeaxisOptions.top = null; - timeaxisOptions.width = '100%'; - timeaxisOptions.height = null; - this.timeaxis = new TimeAxis(this.itemPanel, [], timeaxisOptions); - this.timeaxis.setRange(this.range); - this.controller.add(this.timeaxis); - - // current time bar - this.currenttime = new CurrentTime(this.timeaxis, [], rootOptions); - this.controller.add(this.currenttime); - - // custom time bar - this.customtime = new CustomTime(this.timeaxis, [], rootOptions); - this.controller.add(this.customtime); - - // create groupset - this.setGroups(null); - - this.itemsData = null; // DataSet - this.groupsData = null; // DataSet - - // apply options - if (options) { - this.setOptions(options); - } - - // create itemset and groupset - if (items) { - this.setItems(items); - } -} - -/** - * Set options - * @param {Object} options TODO: describe the available options - */ -Timeline.prototype.setOptions = function (options) { - util.extend(this.options, options); - - // force update of range - // options.start and options.end can be undefined - //this.range.setRange(options.start, options.end); - this.range.setRange(); - - this.controller.reflow(); - this.controller.repaint(); -}; - -/** - * Set a custom time bar - * @param {Date} time - */ -Timeline.prototype.setCustomTime = function (time) { - this.customtime._setCustomTime(time); -}; - -/** - * Retrieve the current custom time. - * @return {Date} customTime - */ -Timeline.prototype.getCustomTime = function() { - return new Date(this.customtime.customTime.valueOf()); -}; - -/** - * Set items - * @param {vis.DataSet | Array | DataTable | null} items - */ -Timeline.prototype.setItems = function(items) { - var initialLoad = (this.itemsData == null); - - // convert to type DataSet when needed - var newItemSet; - if (!items) { - newItemSet = null; - } - else if (items instanceof DataSet) { - newItemSet = items; - } - if (!(items instanceof DataSet)) { - newItemSet = new DataSet({ - convert: { - start: 'Date', - end: 'Date' - } - }); - newItemSet.add(items); - } - - // set items - this.itemsData = newItemSet; - this.content.setItems(newItemSet); - - if (initialLoad && (this.options.start == undefined || this.options.end == undefined)) { - // apply the data range as range - var dataRange = this.getItemRange(); - - // add 5% space on both sides - var min = dataRange.min; - var max = dataRange.max; - if (min != null && max != null) { - var interval = (max.valueOf() - min.valueOf()); - if (interval <= 0) { - // prevent an empty interval - interval = 24 * 60 * 60 * 1000; // 1 day - } - min = new Date(min.valueOf() - interval * 0.05); - max = new Date(max.valueOf() + interval * 0.05); - } - - // override specified start and/or end date - if (this.options.start != undefined) { - min = util.convert(this.options.start, 'Date'); - } - if (this.options.end != undefined) { - max = util.convert(this.options.end, 'Date'); - } - - // apply range if there is a min or max available - if (min != null || max != null) { - this.range.setRange(min, max); - } - } -}; - -/** - * Set groups - * @param {vis.DataSet | Array | DataTable} groups - */ -Timeline.prototype.setGroups = function(groups) { - var me = this; - this.groupsData = groups; - - // switch content type between ItemSet or GroupSet when needed - var Type = this.groupsData ? GroupSet : ItemSet; - if (!(this.content instanceof Type)) { - // remove old content set - if (this.content) { - this.content.hide(); - if (this.content.setItems) { - this.content.setItems(); // disconnect from items - } - if (this.content.setGroups) { - this.content.setGroups(); // disconnect from groups - } - this.controller.remove(this.content); - } - - // create new content set - var options = Object.create(this.options); - util.extend(options, { - top: function () { - if (me.options.orientation == 'top') { - return me.timeaxis.height; - } - else { - return me.itemPanel.height - me.timeaxis.height - me.content.height; - } - }, - left: null, - width: '100%', - height: function () { - if (me.options.height) { - // fixed height - return me.itemPanel.height - me.timeaxis.height; - } - else { - // auto height - return null; - } - }, - maxHeight: function () { - // TODO: change maxHeight to be a css string like '100%' or '300px' - if (me.options.maxHeight) { - if (!util.isNumber(me.options.maxHeight)) { - throw new TypeError('Number expected for property maxHeight'); - } - return me.options.maxHeight - me.timeaxis.height; - } - else { - return null; - } - }, - labelContainer: function () { - return me.labelPanel.getContainer(); - } - }); - - this.content = new Type(this.itemPanel, [this.timeaxis], options); - if (this.content.setRange) { - this.content.setRange(this.range); - } - if (this.content.setItems) { - this.content.setItems(this.itemsData); - } - if (this.content.setGroups) { - this.content.setGroups(this.groupsData); - } - this.controller.add(this.content); - } -}; - -/** - * Get the data range of the item set. - * @returns {{min: Date, max: Date}} range A range with a start and end Date. - * When no minimum is found, min==null - * When no maximum is found, max==null - */ -Timeline.prototype.getItemRange = function getItemRange() { - // calculate min from start filed - var itemsData = this.itemsData, - min = null, - max = null; - - if (itemsData) { - // calculate the minimum value of the field 'start' - var minItem = itemsData.min('start'); - min = minItem ? minItem.start.valueOf() : null; - - // calculate maximum value of fields 'start' and 'end' - var maxStartItem = itemsData.max('start'); - if (maxStartItem) { - max = maxStartItem.start.valueOf(); - } - var maxEndItem = itemsData.max('end'); - if (maxEndItem) { - if (max == null) { - max = maxEndItem.end.valueOf(); - } - else { - max = Math.max(max, maxEndItem.end.valueOf()); - } - } - } - - return { - min: (min != null) ? new Date(min) : null, - max: (max != null) ? new Date(max) : null - }; -}; - -(function(exports) { - /** - * Parse a text source containing data in DOT language into a JSON object. - * The object contains two lists: one with nodes and one with edges. - * - * DOT language reference: http://www.graphviz.org/doc/info/lang.html - * - * @param {String} data Text containing a graph in DOT-notation - * @return {Object} graph An object containing two parameters: - * {Object[]} nodes - * {Object[]} edges - */ - function parseDOT (data) { - dot = data; - return parseGraph(); - } - - // token types enumeration - var TOKENTYPE = { - NULL : 0, - DELIMITER : 1, - IDENTIFIER: 2, - UNKNOWN : 3 - }; - - // map with all delimiters - var DELIMITERS = { - '{': true, - '}': true, - '[': true, - ']': true, - ';': true, - '=': true, - ',': true, - - '->': true, - '--': true - }; - - var dot = ''; // current dot file - var index = 0; // current index in dot file - var c = ''; // current token character in expr - var token = ''; // current token - var tokenType = TOKENTYPE.NULL; // type of the token - - /** - * Get the first character from the dot file. - * The character is stored into the char c. If the end of the dot file is - * reached, the function puts an empty string in c. - */ - function first() { - index = 0; - c = dot.charAt(0); - } - - /** - * Get the next character from the dot file. - * The character is stored into the char c. If the end of the dot file is - * reached, the function puts an empty string in c. - */ - function next() { - index++; - c = dot.charAt(index); - } - - /** - * Preview the next character from the dot file. - * @return {String} cNext - */ - function nextPreview() { - return dot.charAt(index + 1); - } - - /** - * Test whether given character is alphabetic or numeric - * @param {String} c - * @return {Boolean} isAlphaNumeric - */ - var regexAlphaNumeric = /[a-zA-Z_0-9.:#]/; - function isAlphaNumeric(c) { - return regexAlphaNumeric.test(c); - } - - /** - * Merge all properties of object b into object b - * @param {Object} a - * @param {Object} b - * @return {Object} a - */ - function merge (a, b) { - if (!a) { - a = {}; - } - - if (b) { - for (var name in b) { - if (b.hasOwnProperty(name)) { - a[name] = b[name]; - } - } - } - return a; - } - - /** - * Set a value in an object, where the provided parameter name can be a - * path with nested parameters. For example: - * - * var obj = {a: 2}; - * setValue(obj, 'b.c', 3); // obj = {a: 2, b: {c: 3}} - * - * @param {Object} obj - * @param {String} path A parameter name or dot-separated parameter path, - * like "color.highlight.border". - * @param {*} value - */ - function setValue(obj, path, value) { - var keys = path.split('.'); - var o = obj; - while (keys.length) { - var key = keys.shift(); - if (keys.length) { - // this isn't the end point - if (!o[key]) { - o[key] = {}; - } - o = o[key]; - } - else { - // this is the end point - o[key] = value; - } - } - } - - /** - * Add a node to a graph object. If there is already a node with - * the same id, their attributes will be merged. - * @param {Object} graph - * @param {Object} node - */ - function addNode(graph, node) { - var i, len; - var current = null; - - // find root graph (in case of subgraph) - var graphs = [graph]; // list with all graphs from current graph to root graph - var root = graph; - while (root.parent) { - graphs.push(root.parent); - root = root.parent; - } - - // find existing node (at root level) by its id - if (root.nodes) { - for (i = 0, len = root.nodes.length; i < len; i++) { - if (node.id === root.nodes[i].id) { - current = root.nodes[i]; - break; - } - } - } - - if (!current) { - // this is a new node - current = { - id: node.id - }; - if (graph.node) { - // clone default attributes - current.attr = merge(current.attr, graph.node); - } - } - - // add node to this (sub)graph and all its parent graphs - for (i = graphs.length - 1; i >= 0; i--) { - var g = graphs[i]; - - if (!g.nodes) { - g.nodes = []; - } - if (g.nodes.indexOf(current) == -1) { - g.nodes.push(current); - } - } - - // merge attributes - if (node.attr) { - current.attr = merge(current.attr, node.attr); - } - } - - /** - * Add an edge to a graph object - * @param {Object} graph - * @param {Object} edge - */ - function addEdge(graph, edge) { - if (!graph.edges) { - graph.edges = []; - } - graph.edges.push(edge); - if (graph.edge) { - var attr = merge({}, graph.edge); // clone default attributes - edge.attr = merge(attr, edge.attr); // merge attributes - } - } - - /** - * Create an edge to a graph object - * @param {Object} graph - * @param {String | Number | Object} from - * @param {String | Number | Object} to - * @param {String} type - * @param {Object | null} attr - * @return {Object} edge - */ - function createEdge(graph, from, to, type, attr) { - var edge = { - from: from, - to: to, - type: type - }; - - if (graph.edge) { - edge.attr = merge({}, graph.edge); // clone default attributes - } - edge.attr = merge(edge.attr || {}, attr); // merge attributes - - return edge; - } - - /** - * Get next token in the current dot file. - * The token and token type are available as token and tokenType - */ - function getToken() { - tokenType = TOKENTYPE.NULL; - token = ''; - - // skip over whitespaces - while (c == ' ' || c == '\t' || c == '\n' || c == '\r') { // space, tab, enter - next(); - } - - do { - var isComment = false; - - // skip comment - if (c == '#') { - // find the previous non-space character - var i = index - 1; - while (dot.charAt(i) == ' ' || dot.charAt(i) == '\t') { - i--; - } - if (dot.charAt(i) == '\n' || dot.charAt(i) == '') { - // the # is at the start of a line, this is indeed a line comment - while (c != '' && c != '\n') { - next(); - } - isComment = true; - } - } - if (c == '/' && nextPreview() == '/') { - // skip line comment - while (c != '' && c != '\n') { - next(); - } - isComment = true; - } - if (c == '/' && nextPreview() == '*') { - // skip block comment - while (c != '') { - if (c == '*' && nextPreview() == '/') { - // end of block comment found. skip these last two characters - next(); - next(); - break; - } - else { - next(); - } - } - isComment = true; - } - - // skip over whitespaces - while (c == ' ' || c == '\t' || c == '\n' || c == '\r') { // space, tab, enter - next(); - } - } - while (isComment); - - // check for end of dot file - if (c == '') { - // token is still empty - tokenType = TOKENTYPE.DELIMITER; - return; - } - - // check for delimiters consisting of 2 characters - var c2 = c + nextPreview(); - if (DELIMITERS[c2]) { - tokenType = TOKENTYPE.DELIMITER; - token = c2; - next(); - next(); - return; - } - - // check for delimiters consisting of 1 character - if (DELIMITERS[c]) { - tokenType = TOKENTYPE.DELIMITER; - token = c; - next(); - return; - } - - // check for an identifier (number or string) - // TODO: more precise parsing of numbers/strings (and the port separator ':') - if (isAlphaNumeric(c) || c == '-') { - token += c; - next(); - - while (isAlphaNumeric(c)) { - token += c; - next(); - } - if (token == 'false') { - token = false; // convert to boolean - } - else if (token == 'true') { - token = true; // convert to boolean - } - else if (!isNaN(Number(token))) { - token = Number(token); // convert to number - } - tokenType = TOKENTYPE.IDENTIFIER; - return; - } - - // check for a string enclosed by double quotes - if (c == '"') { - next(); - while (c != '' && (c != '"' || (c == '"' && nextPreview() == '"'))) { - token += c; - if (c == '"') { // skip the escape character - next(); - } - next(); - } - if (c != '"') { - throw newSyntaxError('End of string " expected'); - } - next(); - tokenType = TOKENTYPE.IDENTIFIER; - return; - } - - // something unknown is found, wrong characters, a syntax error - tokenType = TOKENTYPE.UNKNOWN; - while (c != '') { - token += c; - next(); - } - throw new SyntaxError('Syntax error in part "' + chop(token, 30) + '"'); - } - - /** - * Parse a graph. - * @returns {Object} graph - */ - function parseGraph() { - var graph = {}; - - first(); - getToken(); - - // optional strict keyword - if (token == 'strict') { - graph.strict = true; - getToken(); - } - - // graph or digraph keyword - if (token == 'graph' || token == 'digraph') { - graph.type = token; - getToken(); - } - - // optional graph id - if (tokenType == TOKENTYPE.IDENTIFIER) { - graph.id = token; - getToken(); - } - - // open angle bracket - if (token != '{') { - throw newSyntaxError('Angle bracket { expected'); - } - getToken(); - - // statements - parseStatements(graph); - - // close angle bracket - if (token != '}') { - throw newSyntaxError('Angle bracket } expected'); - } - getToken(); - - // end of file - if (token !== '') { - throw newSyntaxError('End of file expected'); - } - getToken(); - - // remove temporary default properties - delete graph.node; - delete graph.edge; - delete graph.graph; - - return graph; - } - - /** - * Parse a list with statements. - * @param {Object} graph - */ - function parseStatements (graph) { - while (token !== '' && token != '}') { - parseStatement(graph); - if (token == ';') { - getToken(); - } - } - } - - /** - * Parse a single statement. Can be a an attribute statement, node - * statement, a series of node statements and edge statements, or a - * parameter. - * @param {Object} graph - */ - function parseStatement(graph) { - // parse subgraph - var subgraph = parseSubgraph(graph); - if (subgraph) { - // edge statements - parseEdge(graph, subgraph); - - return; - } - - // parse an attribute statement - var attr = parseAttributeStatement(graph); - if (attr) { - return; - } - - // parse node - if (tokenType != TOKENTYPE.IDENTIFIER) { - throw newSyntaxError('Identifier expected'); - } - var id = token; // id can be a string or a number - getToken(); - - if (token == '=') { - // id statement - getToken(); - if (tokenType != TOKENTYPE.IDENTIFIER) { - throw newSyntaxError('Identifier expected'); - } - graph[id] = token; - getToken(); - // TODO: implement comma separated list with "a_list: ID=ID [','] [a_list] " - } - else { - parseNodeStatement(graph, id); - } - } - - /** - * Parse a subgraph - * @param {Object} graph parent graph object - * @return {Object | null} subgraph - */ - function parseSubgraph (graph) { - var subgraph = null; - - // optional subgraph keyword - if (token == 'subgraph') { - subgraph = {}; - subgraph.type = 'subgraph'; - getToken(); - - // optional graph id - if (tokenType == TOKENTYPE.IDENTIFIER) { - subgraph.id = token; - getToken(); - } - } - - // open angle bracket - if (token == '{') { - getToken(); - - if (!subgraph) { - subgraph = {}; - } - subgraph.parent = graph; - subgraph.node = graph.node; - subgraph.edge = graph.edge; - subgraph.graph = graph.graph; - - // statements - parseStatements(subgraph); - - // close angle bracket - if (token != '}') { - throw newSyntaxError('Angle bracket } expected'); - } - getToken(); - - // remove temporary default properties - delete subgraph.node; - delete subgraph.edge; - delete subgraph.graph; - delete subgraph.parent; - - // register at the parent graph - if (!graph.subgraphs) { - graph.subgraphs = []; - } - graph.subgraphs.push(subgraph); - } - - return subgraph; - } - - /** - * parse an attribute statement like "node [shape=circle fontSize=16]". - * Available keywords are 'node', 'edge', 'graph'. - * The previous list with default attributes will be replaced - * @param {Object} graph - * @returns {String | null} keyword Returns the name of the parsed attribute - * (node, edge, graph), or null if nothing - * is parsed. - */ - function parseAttributeStatement (graph) { - // attribute statements - if (token == 'node') { - getToken(); - - // node attributes - graph.node = parseAttributeList(); - return 'node'; - } - else if (token == 'edge') { - getToken(); - - // edge attributes - graph.edge = parseAttributeList(); - return 'edge'; - } - else if (token == 'graph') { - getToken(); - - // graph attributes - graph.graph = parseAttributeList(); - return 'graph'; - } - - return null; - } - - /** - * parse a node statement - * @param {Object} graph - * @param {String | Number} id - */ - function parseNodeStatement(graph, id) { - // node statement - var node = { - id: id - }; - var attr = parseAttributeList(); - if (attr) { - node.attr = attr; - } - addNode(graph, node); - - // edge statements - parseEdge(graph, id); - } - - /** - * Parse an edge or a series of edges - * @param {Object} graph - * @param {String | Number} from Id of the from node - */ - function parseEdge(graph, from) { - while (token == '->' || token == '--') { - var to; - var type = token; - getToken(); - - var subgraph = parseSubgraph(graph); - if (subgraph) { - to = subgraph; - } - else { - if (tokenType != TOKENTYPE.IDENTIFIER) { - throw newSyntaxError('Identifier or subgraph expected'); - } - to = token; - addNode(graph, { - id: to - }); - getToken(); - } - - // parse edge attributes - var attr = parseAttributeList(); - - // create edge - var edge = createEdge(graph, from, to, type, attr); - addEdge(graph, edge); - - from = to; - } - } - - /** - * Parse a set with attributes, - * for example [label="1.000", shape=solid] - * @return {Object | null} attr - */ - function parseAttributeList() { - var attr = null; - - while (token == '[') { - getToken(); - attr = {}; - while (token !== '' && token != ']') { - if (tokenType != TOKENTYPE.IDENTIFIER) { - throw newSyntaxError('Attribute name expected'); - } - var name = token; - - getToken(); - if (token != '=') { - throw newSyntaxError('Equal sign = expected'); - } - getToken(); - - if (tokenType != TOKENTYPE.IDENTIFIER) { - throw newSyntaxError('Attribute value expected'); - } - var value = token; - setValue(attr, name, value); // name can be a path - - getToken(); - if (token ==',') { - getToken(); - } - } - - if (token != ']') { - throw newSyntaxError('Bracket ] expected'); - } - getToken(); - } - - return attr; - } - - /** - * Create a syntax error with extra information on current token and index. - * @param {String} message - * @returns {SyntaxError} err - */ - function newSyntaxError(message) { - return new SyntaxError(message + ', got "' + chop(token, 30) + '" (char ' + index + ')'); - } - - /** - * Chop off text after a maximum length - * @param {String} text - * @param {Number} maxLength - * @returns {String} - */ - function chop (text, maxLength) { - return (text.length <= maxLength) ? text : (text.substr(0, 27) + '...'); - } - - /** - * Execute a function fn for each pair of elements in two arrays - * @param {Array | *} array1 - * @param {Array | *} array2 - * @param {function} fn - */ - function forEach2(array1, array2, fn) { - if (array1 instanceof Array) { - array1.forEach(function (elem1) { - if (array2 instanceof Array) { - array2.forEach(function (elem2) { - fn(elem1, elem2); - }); - } - else { - fn(elem1, array2); - } - }); - } - else { - if (array2 instanceof Array) { - array2.forEach(function (elem2) { - fn(array1, elem2); - }); - } - else { - fn(array1, array2); - } - } - } - - /** - * Convert a string containing a graph in DOT language into a map containing - * with nodes and edges in the format of graph. - * @param {String} data Text containing a graph in DOT-notation - * @return {Object} graphData - */ - function DOTToGraph (data) { - // parse the DOT file - var dotData = parseDOT(data); - var graphData = { - nodes: [], - edges: [], - options: {} - }; - - // copy the nodes - if (dotData.nodes) { - dotData.nodes.forEach(function (dotNode) { - var graphNode = { - id: dotNode.id, - label: String(dotNode.label || dotNode.id) - }; - merge(graphNode, dotNode.attr); - if (graphNode.image) { - graphNode.shape = 'image'; - } - graphData.nodes.push(graphNode); - }); - } - - // copy the edges - if (dotData.edges) { - /** - * Convert an edge in DOT format to an edge with VisGraph format - * @param {Object} dotEdge - * @returns {Object} graphEdge - */ - function convertEdge(dotEdge) { - var graphEdge = { - from: dotEdge.from, - to: dotEdge.to - }; - merge(graphEdge, dotEdge.attr); - graphEdge.style = (dotEdge.type == '->') ? 'arrow' : 'line'; - return graphEdge; - } - - dotData.edges.forEach(function (dotEdge) { - var from, to; - if (dotEdge.from instanceof Object) { - from = dotEdge.from.nodes; - } - else { - from = { - id: dotEdge.from - } - } - - if (dotEdge.to instanceof Object) { - to = dotEdge.to.nodes; - } - else { - to = { - id: dotEdge.to - } - } - - if (dotEdge.from instanceof Object && dotEdge.from.edges) { - dotEdge.from.edges.forEach(function (subEdge) { - var graphEdge = convertEdge(subEdge); - graphData.edges.push(graphEdge); - }); - } - - forEach2(from, to, function (from, to) { - var subEdge = createEdge(graphData, from.id, to.id, dotEdge.type, dotEdge.attr); - var graphEdge = convertEdge(subEdge); - graphData.edges.push(graphEdge); - }); - - if (dotEdge.to instanceof Object && dotEdge.to.edges) { - dotEdge.to.edges.forEach(function (subEdge) { - var graphEdge = convertEdge(subEdge); - graphData.edges.push(graphEdge); - }); - } - }); - } - - // copy the options - if (dotData.attr) { - graphData.options = dotData.attr; - } - - return graphData; - } - - // exports - exports.parseDOT = parseDOT; - exports.DOTToGraph = DOTToGraph; - -})(typeof util !== 'undefined' ? util : exports); - -/** - * Canvas shapes used by the Graph - */ -if (typeof CanvasRenderingContext2D !== 'undefined') { - - /** - * Draw a circle shape - */ - CanvasRenderingContext2D.prototype.circle = function(x, y, r) { - this.beginPath(); - this.arc(x, y, r, 0, 2*Math.PI, false); - }; - - /** - * Draw a square shape - * @param {Number} x horizontal center - * @param {Number} y vertical center - * @param {Number} r size, width and height of the square - */ - CanvasRenderingContext2D.prototype.square = function(x, y, r) { - this.beginPath(); - this.rect(x - r, y - r, r * 2, r * 2); - }; - - /** - * Draw a triangle shape - * @param {Number} x horizontal center - * @param {Number} y vertical center - * @param {Number} r radius, half the length of the sides of the triangle - */ - CanvasRenderingContext2D.prototype.triangle = function(x, y, r) { - // http://en.wikipedia.org/wiki/Equilateral_triangle - this.beginPath(); - - var s = r * 2; - var s2 = s / 2; - var ir = Math.sqrt(3) / 6 * s; // radius of inner circle - var h = Math.sqrt(s * s - s2 * s2); // height - - this.moveTo(x, y - (h - ir)); - this.lineTo(x + s2, y + ir); - this.lineTo(x - s2, y + ir); - this.lineTo(x, y - (h - ir)); - this.closePath(); - }; - - /** - * Draw a triangle shape in downward orientation - * @param {Number} x horizontal center - * @param {Number} y vertical center - * @param {Number} r radius - */ - CanvasRenderingContext2D.prototype.triangleDown = function(x, y, r) { - // http://en.wikipedia.org/wiki/Equilateral_triangle - this.beginPath(); - - var s = r * 2; - var s2 = s / 2; - var ir = Math.sqrt(3) / 6 * s; // radius of inner circle - var h = Math.sqrt(s * s - s2 * s2); // height - - this.moveTo(x, y + (h - ir)); - this.lineTo(x + s2, y - ir); - this.lineTo(x - s2, y - ir); - this.lineTo(x, y + (h - ir)); - this.closePath(); - }; - - /** - * Draw a star shape, a star with 5 points - * @param {Number} x horizontal center - * @param {Number} y vertical center - * @param {Number} r radius, half the length of the sides of the triangle - */ - CanvasRenderingContext2D.prototype.star = function(x, y, r) { - // http://www.html5canvastutorials.com/labs/html5-canvas-star-spinner/ - this.beginPath(); - - for (var n = 0; n < 10; n++) { - var radius = (n % 2 === 0) ? r * 1.3 : r * 0.5; - this.lineTo( - x + radius * Math.sin(n * 2 * Math.PI / 10), - y - radius * Math.cos(n * 2 * Math.PI / 10) - ); - } - - this.closePath(); - }; - - /** - * http://stackoverflow.com/questions/1255512/how-to-draw-a-rounded-rectangle-on-html-canvas - */ - CanvasRenderingContext2D.prototype.roundRect = function(x, y, w, h, r) { - var r2d = Math.PI/180; - if( w - ( 2 * r ) < 0 ) { r = ( w / 2 ); } //ensure that the radius isn't too large for x - if( h - ( 2 * r ) < 0 ) { r = ( h / 2 ); } //ensure that the radius isn't too large for y - this.beginPath(); - this.moveTo(x+r,y); - this.lineTo(x+w-r,y); - this.arc(x+w-r,y+r,r,r2d*270,r2d*360,false); - this.lineTo(x+w,y+h-r); - this.arc(x+w-r,y+h-r,r,0,r2d*90,false); - this.lineTo(x+r,y+h); - this.arc(x+r,y+h-r,r,r2d*90,r2d*180,false); - this.lineTo(x,y+r); - this.arc(x+r,y+r,r,r2d*180,r2d*270,false); - }; - - /** - * http://stackoverflow.com/questions/2172798/how-to-draw-an-oval-in-html5-canvas - */ - CanvasRenderingContext2D.prototype.ellipse = function(x, y, w, h) { - var kappa = .5522848, - ox = (w / 2) * kappa, // control point offset horizontal - oy = (h / 2) * kappa, // control point offset vertical - xe = x + w, // x-end - ye = y + h, // y-end - xm = x + w / 2, // x-middle - ym = y + h / 2; // y-middle - - this.beginPath(); - this.moveTo(x, ym); - this.bezierCurveTo(x, ym - oy, xm - ox, y, xm, y); - this.bezierCurveTo(xm + ox, y, xe, ym - oy, xe, ym); - this.bezierCurveTo(xe, ym + oy, xm + ox, ye, xm, ye); - this.bezierCurveTo(xm - ox, ye, x, ym + oy, x, ym); - }; - - - - /** - * http://stackoverflow.com/questions/2172798/how-to-draw-an-oval-in-html5-canvas - */ - CanvasRenderingContext2D.prototype.database = function(x, y, w, h) { - var f = 1/3; - var wEllipse = w; - var hEllipse = h * f; - - var kappa = .5522848, - ox = (wEllipse / 2) * kappa, // control point offset horizontal - oy = (hEllipse / 2) * kappa, // control point offset vertical - xe = x + wEllipse, // x-end - ye = y + hEllipse, // y-end - xm = x + wEllipse / 2, // x-middle - ym = y + hEllipse / 2, // y-middle - ymb = y + (h - hEllipse/2), // y-midlle, bottom ellipse - yeb = y + h; // y-end, bottom ellipse - - this.beginPath(); - this.moveTo(xe, ym); - - this.bezierCurveTo(xe, ym + oy, xm + ox, ye, xm, ye); - this.bezierCurveTo(xm - ox, ye, x, ym + oy, x, ym); - - this.bezierCurveTo(x, ym - oy, xm - ox, y, xm, y); - this.bezierCurveTo(xm + ox, y, xe, ym - oy, xe, ym); - - this.lineTo(xe, ymb); - - this.bezierCurveTo(xe, ymb + oy, xm + ox, yeb, xm, yeb); - this.bezierCurveTo(xm - ox, yeb, x, ymb + oy, x, ymb); - - this.lineTo(x, ym); - }; - - - /** - * Draw an arrow point (no line) - */ - CanvasRenderingContext2D.prototype.arrow = function(x, y, angle, length) { - // tail - var xt = x - length * Math.cos(angle); - var yt = y - length * Math.sin(angle); - - // inner tail - // TODO: allow to customize different shapes - var xi = x - length * 0.9 * Math.cos(angle); - var yi = y - length * 0.9 * Math.sin(angle); - - // left - var xl = xt + length / 3 * Math.cos(angle + 0.5 * Math.PI); - var yl = yt + length / 3 * Math.sin(angle + 0.5 * Math.PI); - - // right - var xr = xt + length / 3 * Math.cos(angle - 0.5 * Math.PI); - var yr = yt + length / 3 * Math.sin(angle - 0.5 * Math.PI); - - this.beginPath(); - this.moveTo(x, y); - this.lineTo(xl, yl); - this.lineTo(xi, yi); - this.lineTo(xr, yr); - this.closePath(); - }; - - /** - * Sets up the dashedLine functionality for drawing - * Original code came from http://stackoverflow.com/questions/4576724/dotted-stroke-in-canvas - * @author David Jordan - * @date 2012-08-08 - */ - CanvasRenderingContext2D.prototype.dashedLine = function(x,y,x2,y2,dashArray){ - if (!dashArray) dashArray=[10,5]; - if (dashLength==0) dashLength = 0.001; // Hack for Safari - var dashCount = dashArray.length; - this.moveTo(x, y); - var dx = (x2-x), dy = (y2-y); - var slope = dy/dx; - var distRemaining = Math.sqrt( dx*dx + dy*dy ); - var dashIndex=0, draw=true; - while (distRemaining>=0.1){ - var dashLength = dashArray[dashIndex++%dashCount]; - if (dashLength > distRemaining) dashLength = distRemaining; - var xStep = Math.sqrt( dashLength*dashLength / (1 + slope*slope) ); - if (dx<0) xStep = -xStep; - x += xStep; - y += slope*xStep; - this[draw ? 'lineTo' : 'moveTo'](x,y); - distRemaining -= dashLength; - draw = !draw; - } - }; - - // TODO: add diamond shape -} - -/** - * @class Node - * A node. A node can be connected to other nodes via one or multiple edges. - * @param {object} properties An object containing properties for the node. All - * properties are optional, except for the id. - * {number} id Id of the node. Required - * {string} label Text label for the node - * {number} x Horizontal position of the node - * {number} y Vertical position of the node - * {string} shape Node shape, available: - * "database", "circle", "ellipse", - * "box", "image", "text", "dot", - * "star", "triangle", "triangleDown", - * "square" - * {string} image An image url - * {string} title An title text, can be HTML - * {anytype} group A group name or number - * @param {Graph.Images} imagelist A list with images. Only needed - * when the node has an image - * @param {Graph.Groups} grouplist A list with groups. Needed for - * retrieving group properties - * @param {Object} constants An object with default values for - * example for the color - */ -function Node(properties, imagelist, grouplist, constants) { - this.selected = false; - - this.edges = []; // all edges connected to this node - this.group = constants.nodes.group; - - this.fontSize = constants.nodes.fontSize; - this.fontFace = constants.nodes.fontFace; - this.fontColor = constants.nodes.fontColor; - - this.color = constants.nodes.color; - - // set defaults for the properties - this.id = undefined; - this.shape = constants.nodes.shape; - this.image = constants.nodes.image; - this.x = 0; - this.y = 0; - this.xFixed = false; - this.yFixed = false; - this.radius = constants.nodes.radius; - this.radiusFixed = false; - this.radiusMin = constants.nodes.radiusMin; - this.radiusMax = constants.nodes.radiusMax; - - this.imagelist = imagelist; - this.grouplist = grouplist; - - this.setProperties(properties, constants); - - // mass, force, velocity - this.mass = 50; // kg (mass is adjusted for the number of connected edges) - this.fx = 0.0; // external force x - this.fy = 0.0; // external force y - this.vx = 0.0; // velocity x - this.vy = 0.0; // velocity y - this.minForce = constants.minForce; - this.damping = 0.9; // damping factor -}; - -/** - * Attach a edge to the node - * @param {Edge} edge - */ -Node.prototype.attachEdge = function(edge) { - if (this.edges.indexOf(edge) == -1) { - this.edges.push(edge); - } - this._updateMass(); -}; - -/** - * Detach a edge from the node - * @param {Edge} edge - */ -Node.prototype.detachEdge = function(edge) { - var index = this.edges.indexOf(edge); - if (index != -1) { - this.edges.splice(index, 1); - } - this._updateMass(); -}; - -/** - * Update the nodes mass, which is determined by the number of edges connecting - * to it (more edges -> heavier node). - * @private - */ -Node.prototype._updateMass = function() { - this.mass = 50 + 20 * this.edges.length; // kg -}; - -/** - * Set or overwrite properties for the node - * @param {Object} properties an object with properties - * @param {Object} constants and object with default, global properties - */ -Node.prototype.setProperties = function(properties, constants) { - if (!properties) { - return; - } - - // basic properties - if (properties.id != undefined) {this.id = properties.id;} - if (properties.label != undefined) {this.label = properties.label;} - if (properties.title != undefined) {this.title = properties.title;} - if (properties.group != undefined) {this.group = properties.group;} - if (properties.x != undefined) {this.x = properties.x;} - if (properties.y != undefined) {this.y = properties.y;} - if (properties.value != undefined) {this.value = properties.value;} - - if (this.id === undefined) { - throw "Node must have an id"; - } - - // copy group properties - if (this.group) { - var groupObj = this.grouplist.get(this.group); - for (var prop in groupObj) { - if (groupObj.hasOwnProperty(prop)) { - this[prop] = groupObj[prop]; - } - } - } - - // individual shape properties - if (properties.shape != undefined) {this.shape = properties.shape;} - if (properties.image != undefined) {this.image = properties.image;} - if (properties.radius != undefined) {this.radius = properties.radius;} - if (properties.color != undefined) {this.color = Node.parseColor(properties.color);} - - if (properties.fontColor != undefined) {this.fontColor = properties.fontColor;} - if (properties.fontSize != undefined) {this.fontSize = properties.fontSize;} - if (properties.fontFace != undefined) {this.fontFace = properties.fontFace;} - - - if (this.image != undefined) { - if (this.imagelist) { - this.imageObj = this.imagelist.load(this.image); - } - else { - throw "No imagelist provided"; - } - } - - this.xFixed = this.xFixed || (properties.x != undefined); - this.yFixed = this.yFixed || (properties.y != undefined); - this.radiusFixed = this.radiusFixed || (properties.radius != undefined); - - if (this.shape == 'image') { - this.radiusMin = constants.nodes.widthMin; - this.radiusMax = constants.nodes.widthMax; - } - - // choose draw method depending on the shape - switch (this.shape) { - case 'database': this.draw = this._drawDatabase; this.resize = this._resizeDatabase; break; - case 'box': this.draw = this._drawBox; this.resize = this._resizeBox; break; - case 'circle': this.draw = this._drawCircle; this.resize = this._resizeCircle; break; - case 'ellipse': this.draw = this._drawEllipse; this.resize = this._resizeEllipse; break; - // TODO: add diamond shape - case 'image': this.draw = this._drawImage; this.resize = this._resizeImage; break; - case 'text': this.draw = this._drawText; this.resize = this._resizeText; break; - case 'dot': this.draw = this._drawDot; this.resize = this._resizeShape; break; - case 'square': this.draw = this._drawSquare; this.resize = this._resizeShape; break; - case 'triangle': this.draw = this._drawTriangle; this.resize = this._resizeShape; break; - case 'triangleDown': this.draw = this._drawTriangleDown; this.resize = this._resizeShape; break; - case 'star': this.draw = this._drawStar; this.resize = this._resizeShape; break; - default: this.draw = this._drawEllipse; this.resize = this._resizeEllipse; break; - } - - // reset the size of the node, this can be changed - this._reset(); -}; - -/** - * Parse a color property into an object with border, background, and - * hightlight colors - * @param {Object | String} color - * @return {Object} colorObject - */ -Node.parseColor = function(color) { - var c; - if (util.isString(color)) { - c = { - border: color, - background: color, - highlight: { - border: color, - background: color - } - }; - // TODO: automatically generate a nice highlight color - } - else { - c = {}; - c.background = color.background || 'white'; - c.border = color.border || c.background; - if (util.isString(color.highlight)) { - c.highlight = { - border: color.highlight, - background: color.highlight - } - } - else { - c.highlight = {}; - c.highlight.background = color.highlight && color.highlight.background || c.background; - c.highlight.border = color.highlight && color.highlight.border || c.border; - } - } - return c; -}; - -/** - * select this node - */ -Node.prototype.select = function() { - this.selected = true; - this._reset(); -}; - -/** - * unselect this node - */ -Node.prototype.unselect = function() { - this.selected = false; - this._reset(); -}; - -/** - * Reset the calculated size of the node, forces it to recalculate its size - * @private - */ -Node.prototype._reset = function() { - this.width = undefined; - this.height = undefined; -}; - -/** - * get the title of this node. - * @return {string} title The title of the node, or undefined when no title - * has been set. - */ -Node.prototype.getTitle = function() { - return this.title; -}; - -/** - * Calculate the distance to the border of the Node - * @param {CanvasRenderingContext2D} ctx - * @param {Number} angle Angle in radians - * @returns {number} distance Distance to the border in pixels - */ -Node.prototype.distanceToBorder = function (ctx, angle) { - var borderWidth = 1; - - if (!this.width) { - this.resize(ctx); - } - - //noinspection FallthroughInSwitchStatementJS - switch (this.shape) { - case 'circle': - case 'dot': - return this.radius + borderWidth; - - case 'ellipse': - var a = this.width / 2; - var b = this.height / 2; - var w = (Math.sin(angle) * a); - var h = (Math.cos(angle) * b); - return a * b / Math.sqrt(w * w + h * h); - - // TODO: implement distanceToBorder for database - // TODO: implement distanceToBorder for triangle - // TODO: implement distanceToBorder for triangleDown - - case 'box': - case 'image': - case 'text': - default: - if (this.width) { - return Math.min( - Math.abs(this.width / 2 / Math.cos(angle)), - Math.abs(this.height / 2 / Math.sin(angle))) + borderWidth; - // TODO: reckon with border radius too in case of box - } - else { - return 0; - } - - } - - // TODO: implement calculation of distance to border for all shapes -}; - -/** - * Set forces acting on the node - * @param {number} fx Force in horizontal direction - * @param {number} fy Force in vertical direction - */ -Node.prototype._setForce = function(fx, fy) { - this.fx = fx; - this.fy = fy; -}; - -/** - * Add forces acting on the node - * @param {number} fx Force in horizontal direction - * @param {number} fy Force in vertical direction - * @private - */ -Node.prototype._addForce = function(fx, fy) { - this.fx += fx; - this.fy += fy; -}; - -/** - * Perform one discrete step for the node - * @param {number} interval Time interval in seconds - */ -Node.prototype.discreteStep = function(interval) { - if (!this.xFixed) { - var dx = -this.damping * this.vx; // damping force - var ax = (this.fx + dx) / this.mass; // acceleration - this.vx += ax / interval; // velocity - this.x += this.vx / interval; // position - } - - if (!this.yFixed) { - var dy = -this.damping * this.vy; // damping force - var ay = (this.fy + dy) / this.mass; // acceleration - this.vy += ay / interval; // velocity - this.y += this.vy / interval; // position - } -}; - - -/** - * Check if this node has a fixed x and y position - * @return {boolean} true if fixed, false if not - */ -Node.prototype.isFixed = function() { - return (this.xFixed && this.yFixed); -}; - -/** - * Check if this node is moving - * @param {number} vmin the minimum velocity considered as "moving" - * @return {boolean} true if moving, false if it has no velocity - */ -// TODO: replace this method with calculating the kinetic energy -Node.prototype.isMoving = function(vmin) { - return (Math.abs(this.vx) > vmin || Math.abs(this.vy) > vmin || - (!this.xFixed && Math.abs(this.fx) > this.minForce) || - (!this.yFixed && Math.abs(this.fy) > this.minForce)); -}; - -/** - * check if this node is selecte - * @return {boolean} selected True if node is selected, else false - */ -Node.prototype.isSelected = function() { - return this.selected; -}; - -/** - * Retrieve the value of the node. Can be undefined - * @return {Number} value - */ -Node.prototype.getValue = function() { - return this.value; -}; - -/** - * Calculate the distance from the nodes location to the given location (x,y) - * @param {Number} x - * @param {Number} y - * @return {Number} value - */ -Node.prototype.getDistance = function(x, y) { - var dx = this.x - x, - dy = this.y - y; - return Math.sqrt(dx * dx + dy * dy); -}; - - -/** - * Adjust the value range of the node. The node will adjust it's radius - * based on its value. - * @param {Number} min - * @param {Number} max - */ -Node.prototype.setValueRange = function(min, max) { - if (!this.radiusFixed && this.value !== undefined) { - if (max == min) { - this.radius = (this.radiusMin + this.radiusMax) / 2; - } - else { - var scale = (this.radiusMax - this.radiusMin) / (max - min); - this.radius = (this.value - min) * scale + this.radiusMin; - } - } -}; - -/** - * Draw this node in the given canvas - * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d"); - * @param {CanvasRenderingContext2D} ctx - */ -Node.prototype.draw = function(ctx) { - throw "Draw method not initialized for node"; -}; - -/** - * Recalculate the size of this node in the given canvas - * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d"); - * @param {CanvasRenderingContext2D} ctx - */ -Node.prototype.resize = function(ctx) { - throw "Resize method not initialized for node"; -}; - -/** - * Check if this object is overlapping with the provided object - * @param {Object} obj an object with parameters left, top, right, bottom - * @return {boolean} True if location is located on node - */ -Node.prototype.isOverlappingWith = function(obj) { - return (this.left < obj.right && - this.left + this.width > obj.left && - this.top < obj.bottom && - this.top + this.height > obj.top); -}; - -Node.prototype._resizeImage = function (ctx) { - // TODO: pre calculate the image size - if (!this.width) { // undefined or 0 - var width, height; - if (this.value) { - var scale = this.imageObj.height / this.imageObj.width; - width = this.radius || this.imageObj.width; - height = this.radius * scale || this.imageObj.height; - } - else { - width = this.imageObj.width; - height = this.imageObj.height; - } - this.width = width; - this.height = height; - } -}; - -Node.prototype._drawImage = function (ctx) { - this._resizeImage(ctx); - - this.left = this.x - this.width / 2; - this.top = this.y - this.height / 2; - - var yLabel; - if (this.imageObj) { - ctx.drawImage(this.imageObj, this.left, this.top, this.width, this.height); - yLabel = this.y + this.height / 2; - } - else { - // image still loading... just draw the label for now - yLabel = this.y; - } - - this._label(ctx, this.label, this.x, yLabel, undefined, "top"); -}; - - -Node.prototype._resizeBox = function (ctx) { - if (!this.width) { - var margin = 5; - var textSize = this.getTextSize(ctx); - this.width = textSize.width + 2 * margin; - this.height = textSize.height + 2 * margin; - } -}; - -Node.prototype._drawBox = function (ctx) { - this._resizeBox(ctx); - - this.left = this.x - this.width / 2; - this.top = this.y - this.height / 2; - - ctx.strokeStyle = this.selected ? this.color.highlight.border : this.color.border; - ctx.fillStyle = this.selected ? this.color.highlight.background : this.color.background; - ctx.lineWidth = this.selected ? 2.0 : 1.0; - ctx.roundRect(this.left, this.top, this.width, this.height, this.radius); - ctx.fill(); - ctx.stroke(); - - this._label(ctx, this.label, this.x, this.y); -}; - - -Node.prototype._resizeDatabase = function (ctx) { - if (!this.width) { - var margin = 5; - var textSize = this.getTextSize(ctx); - var size = textSize.width + 2 * margin; - this.width = size; - this.height = size; - } -}; - -Node.prototype._drawDatabase = function (ctx) { - this._resizeDatabase(ctx); - this.left = this.x - this.width / 2; - this.top = this.y - this.height / 2; - - ctx.strokeStyle = this.selected ? this.color.highlight.border : this.color.border; - ctx.fillStyle = this.selected ? this.color.highlight.background : this.color.background; - ctx.lineWidth = this.selected ? 2.0 : 1.0; - ctx.database(this.x - this.width/2, this.y - this.height*0.5, this.width, this.height); - ctx.fill(); - ctx.stroke(); - - this._label(ctx, this.label, this.x, this.y); -}; - - -Node.prototype._resizeCircle = function (ctx) { - if (!this.width) { - var margin = 5; - var textSize = this.getTextSize(ctx); - var diameter = Math.max(textSize.width, textSize.height) + 2 * margin; - this.radius = diameter / 2; - - this.width = diameter; - this.height = diameter; - } -}; - -Node.prototype._drawCircle = function (ctx) { - this._resizeCircle(ctx); - this.left = this.x - this.width / 2; - this.top = this.y - this.height / 2; - - ctx.strokeStyle = this.selected ? this.color.highlight.border : this.color.border; - ctx.fillStyle = this.selected ? this.color.highlight.background : this.color.background; - ctx.lineWidth = this.selected ? 2.0 : 1.0; - ctx.circle(this.x, this.y, this.radius); - ctx.fill(); - ctx.stroke(); - - this._label(ctx, this.label, this.x, this.y); -}; - -Node.prototype._resizeEllipse = function (ctx) { - if (!this.width) { - var textSize = this.getTextSize(ctx); - - this.width = textSize.width * 1.5; - this.height = textSize.height * 2; - if (this.width < this.height) { - this.width = this.height; - } - } -}; - -Node.prototype._drawEllipse = function (ctx) { - this._resizeEllipse(ctx); - this.left = this.x - this.width / 2; - this.top = this.y - this.height / 2; - - ctx.strokeStyle = this.selected ? this.color.highlight.border : this.color.border; - ctx.fillStyle = this.selected ? this.color.highlight.background : this.color.background; - ctx.lineWidth = this.selected ? 2.0 : 1.0; - ctx.ellipse(this.left, this.top, this.width, this.height); - ctx.fill(); - ctx.stroke(); - - this._label(ctx, this.label, this.x, this.y); -}; - -Node.prototype._drawDot = function (ctx) { - this._drawShape(ctx, 'circle'); -}; - -Node.prototype._drawTriangle = function (ctx) { - this._drawShape(ctx, 'triangle'); -}; - -Node.prototype._drawTriangleDown = function (ctx) { - this._drawShape(ctx, 'triangleDown'); -}; - -Node.prototype._drawSquare = function (ctx) { - this._drawShape(ctx, 'square'); -}; - -Node.prototype._drawStar = function (ctx) { - this._drawShape(ctx, 'star'); -}; - -Node.prototype._resizeShape = function (ctx) { - if (!this.width) { - var size = 2 * this.radius; - this.width = size; - this.height = size; - } -}; - -Node.prototype._drawShape = function (ctx, shape) { - this._resizeShape(ctx); - - this.left = this.x - this.width / 2; - this.top = this.y - this.height / 2; - - ctx.strokeStyle = this.selected ? this.color.highlight.border : this.color.border; - ctx.fillStyle = this.selected ? this.color.highlight.background : this.color.background; - ctx.lineWidth = this.selected ? 2.0 : 1.0; - - ctx[shape](this.x, this.y, this.radius); - ctx.fill(); - ctx.stroke(); - - if (this.label) { - this._label(ctx, this.label, this.x, this.y + this.height / 2, undefined, 'top'); - } -}; - -Node.prototype._resizeText = function (ctx) { - if (!this.width) { - var margin = 5; - var textSize = this.getTextSize(ctx); - this.width = textSize.width + 2 * margin; - this.height = textSize.height + 2 * margin; - } -}; - -Node.prototype._drawText = function (ctx) { - this._resizeText(ctx); - this.left = this.x - this.width / 2; - this.top = this.y - this.height / 2; - - this._label(ctx, this.label, this.x, this.y); -}; - - -Node.prototype._label = function (ctx, text, x, y, align, baseline) { - if (text) { - ctx.font = (this.selected ? "bold " : "") + this.fontSize + "px " + this.fontFace; - ctx.fillStyle = this.fontColor || "black"; - ctx.textAlign = align || "center"; - ctx.textBaseline = baseline || "middle"; - - var lines = text.split('\n'), - lineCount = lines.length, - fontSize = (this.fontSize + 4), - yLine = y + (1 - lineCount) / 2 * fontSize; - - for (var i = 0; i < lineCount; i++) { - ctx.fillText(lines[i], x, yLine); - yLine += fontSize; - } - } -}; - - -Node.prototype.getTextSize = function(ctx) { - if (this.label != undefined) { - ctx.font = (this.selected ? "bold " : "") + this.fontSize + "px " + this.fontFace; - - var lines = this.label.split('\n'), - height = (this.fontSize + 4) * lines.length, - width = 0; - - for (var i = 0, iMax = lines.length; i < iMax; i++) { - width = Math.max(width, ctx.measureText(lines[i]).width); - } - - return {"width": width, "height": height}; - } - else { - return {"width": 0, "height": 0}; - } -}; - -/** - * @class Edge - * - * A edge connects two nodes - * @param {Object} properties Object with properties. Must contain - * At least properties from and to. - * Available properties: from (number), - * to (number), label (string, color (string), - * width (number), style (string), - * length (number), title (string) - * @param {Graph} graph A graph object, used to find and edge to - * nodes. - * @param {Object} constants An object with default values for - * example for the color - */ -function Edge (properties, graph, constants) { - if (!graph) { - throw "No graph provided"; - } - this.graph = graph; - - // initialize constants - this.widthMin = constants.edges.widthMin; - this.widthMax = constants.edges.widthMax; - - // initialize variables - this.id = undefined; - this.fromId = undefined; - this.toId = undefined; - this.style = constants.edges.style; - this.title = undefined; - this.width = constants.edges.width; - this.value = undefined; - this.length = constants.edges.length; - - this.from = null; // a node - this.to = null; // a node - this.connected = false; - - // Added to support dashed lines - // David Jordan - // 2012-08-08 - this.dash = util.extend({}, constants.edges.dash); // contains properties length, gap, altLength - - this.stiffness = undefined; // depends on the length of the edge - this.color = constants.edges.color; - this.widthFixed = false; - this.lengthFixed = false; - - this.setProperties(properties, constants); -} - -/** - * Set or overwrite properties for the edge - * @param {Object} properties an object with properties - * @param {Object} constants and object with default, global properties - */ -Edge.prototype.setProperties = function(properties, constants) { - if (!properties) { - return; - } - - if (properties.from != undefined) {this.fromId = properties.from;} - if (properties.to != undefined) {this.toId = properties.to;} - - if (properties.id != undefined) {this.id = properties.id;} - if (properties.style != undefined) {this.style = properties.style;} - if (properties.label != undefined) {this.label = properties.label;} - if (this.label) { - this.fontSize = constants.edges.fontSize; - this.fontFace = constants.edges.fontFace; - this.fontColor = constants.edges.fontColor; - if (properties.fontColor != undefined) {this.fontColor = properties.fontColor;} - if (properties.fontSize != undefined) {this.fontSize = properties.fontSize;} - if (properties.fontFace != undefined) {this.fontFace = properties.fontFace;} - } - if (properties.title != undefined) {this.title = properties.title;} - if (properties.width != undefined) {this.width = properties.width;} - if (properties.value != undefined) {this.value = properties.value;} - if (properties.length != undefined) {this.length = properties.length;} - - // Added to support dashed lines - // David Jordan - // 2012-08-08 - if (properties.dash) { - if (properties.dash.length != undefined) {this.dash.length = properties.dash.length;} - if (properties.dash.gap != undefined) {this.dash.gap = properties.dash.gap;} - if (properties.dash.altLength != undefined) {this.dash.altLength = properties.dash.altLength;} - } - - if (properties.color != undefined) {this.color = properties.color;} - - // A node is connected when it has a from and to node. - this.connect(); - - this.widthFixed = this.widthFixed || (properties.width != undefined); - this.lengthFixed = this.lengthFixed || (properties.length != undefined); - this.stiffness = 1 / this.length; - - // set draw method based on style - switch (this.style) { - case 'line': this.draw = this._drawLine; break; - case 'arrow': this.draw = this._drawArrow; break; - case 'arrow-center': this.draw = this._drawArrowCenter; break; - case 'dash-line': this.draw = this._drawDashLine; break; - default: this.draw = this._drawLine; break; - } -}; - -/** - * Connect an edge to its nodes - */ -Edge.prototype.connect = function () { - this.disconnect(); - - this.from = this.graph.nodes[this.fromId] || null; - this.to = this.graph.nodes[this.toId] || null; - this.connected = (this.from && this.to); - - if (this.connected) { - this.from.attachEdge(this); - this.to.attachEdge(this); - } - else { - if (this.from) { - this.from.detachEdge(this); - } - if (this.to) { - this.to.detachEdge(this); - } - } -}; - -/** - * Disconnect an edge from its nodes - */ -Edge.prototype.disconnect = function () { - if (this.from) { - this.from.detachEdge(this); - this.from = null; - } - if (this.to) { - this.to.detachEdge(this); - this.to = null; - } - - this.connected = false; -}; - -/** - * get the title of this edge. - * @return {string} title The title of the edge, or undefined when no title - * has been set. - */ -Edge.prototype.getTitle = function() { - return this.title; -}; - - -/** - * Retrieve the value of the edge. Can be undefined - * @return {Number} value - */ -Edge.prototype.getValue = function() { - return this.value; -}; - -/** - * Adjust the value range of the edge. The edge will adjust it's width - * based on its value. - * @param {Number} min - * @param {Number} max - */ -Edge.prototype.setValueRange = function(min, max) { - if (!this.widthFixed && this.value !== undefined) { - var scale = (this.widthMax - this.widthMin) / (max - min); - this.width = (this.value - min) * scale + this.widthMin; - } -}; - -/** - * Redraw a edge - * Draw this edge in the given canvas - * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d"); - * @param {CanvasRenderingContext2D} ctx - */ -Edge.prototype.draw = function(ctx) { - throw "Method draw not initialized in edge"; -}; - -/** - * Check if this object is overlapping with the provided object - * @param {Object} obj an object with parameters left, top - * @return {boolean} True if location is located on the edge - */ -Edge.prototype.isOverlappingWith = function(obj) { - var distMax = 10; - - var xFrom = this.from.x; - var yFrom = this.from.y; - var xTo = this.to.x; - var yTo = this.to.y; - var xObj = obj.left; - var yObj = obj.top; - - - var dist = Edge._dist(xFrom, yFrom, xTo, yTo, xObj, yObj); - - return (dist < distMax); -}; - - -/** - * Redraw a edge as a line - * Draw this edge in the given canvas - * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d"); - * @param {CanvasRenderingContext2D} ctx - * @private - */ -Edge.prototype._drawLine = function(ctx) { - // set style - ctx.strokeStyle = this.color; - ctx.lineWidth = this._getLineWidth(); - - var point; - if (this.from != this.to) { - // draw line - this._line(ctx); - - // draw label - if (this.label) { - point = this._pointOnLine(0.5); - this._label(ctx, this.label, point.x, point.y); - } - } - else { - var x, y; - var radius = this.length / 4; - var node = this.from; - if (!node.width) { - node.resize(ctx); - } - if (node.width > node.height) { - x = node.x + node.width / 2; - y = node.y - radius; - } - else { - x = node.x + radius; - y = node.y - node.height / 2; - } - this._circle(ctx, x, y, radius); - point = this._pointOnCircle(x, y, radius, 0.5); - this._label(ctx, this.label, point.x, point.y); - } -}; - -/** - * Get the line width of the edge. Depends on width and whether one of the - * connected nodes is selected. - * @return {Number} width - * @private - */ -Edge.prototype._getLineWidth = function() { - if (this.from.selected || this.to.selected) { - return Math.min(this.width * 2, this.widthMax); - } - else { - return this.width; - } -}; - -/** - * Draw a line between two nodes - * @param {CanvasRenderingContext2D} ctx - * @private - */ -Edge.prototype._line = function (ctx) { - // draw a straight line - ctx.beginPath(); - ctx.moveTo(this.from.x, this.from.y); - ctx.lineTo(this.to.x, this.to.y); - ctx.stroke(); -}; - -/** - * Draw a line from a node to itself, a circle - * @param {CanvasRenderingContext2D} ctx - * @param {Number} x - * @param {Number} y - * @param {Number} radius - * @private - */ -Edge.prototype._circle = function (ctx, x, y, radius) { - // draw a circle - ctx.beginPath(); - ctx.arc(x, y, radius, 0, 2 * Math.PI, false); - ctx.stroke(); -}; - -/** - * Draw label with white background and with the middle at (x, y) - * @param {CanvasRenderingContext2D} ctx - * @param {String} text - * @param {Number} x - * @param {Number} y - * @private - */ -Edge.prototype._label = function (ctx, text, x, y) { - if (text) { - // TODO: cache the calculated size - ctx.font = ((this.from.selected || this.to.selected) ? "bold " : "") + - this.fontSize + "px " + this.fontFace; - ctx.fillStyle = 'white'; - var width = ctx.measureText(text).width; - var height = this.fontSize; - var left = x - width / 2; - var top = y - height / 2; - - ctx.fillRect(left, top, width, height); - - // draw text - ctx.fillStyle = this.fontColor || "black"; - ctx.textAlign = "left"; - ctx.textBaseline = "top"; - ctx.fillText(text, left, top); - } -}; - -/** - * Redraw a edge as a dashed line - * Draw this edge in the given canvas - * @author David Jordan - * @date 2012-08-08 - * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d"); - * @param {CanvasRenderingContext2D} ctx - * @private - */ -Edge.prototype._drawDashLine = function(ctx) { - // set style - ctx.strokeStyle = this.color; - ctx.lineWidth = this._getLineWidth(); - - // draw dashed line - ctx.beginPath(); - ctx.lineCap = 'round'; - if (this.dash.altLength != undefined) //If an alt dash value has been set add to the array this value - { - ctx.dashedLine(this.from.x,this.from.y,this.to.x,this.to.y, - [this.dash.length,this.dash.gap,this.dash.altLength,this.dash.gap]); - } - else if (this.dash.length != undefined && this.dash.gap != undefined) //If a dash and gap value has been set add to the array this value - { - ctx.dashedLine(this.from.x,this.from.y,this.to.x,this.to.y, - [this.dash.length,this.dash.gap]); - } - else //If all else fails draw a line - { - ctx.moveTo(this.from.x, this.from.y); - ctx.lineTo(this.to.x, this.to.y); - } - ctx.stroke(); - - // draw label - if (this.label) { - var point = this._pointOnLine(0.5); - this._label(ctx, this.label, point.x, point.y); - } -}; - -/** - * Get a point on a line - * @param {Number} percentage. Value between 0 (line start) and 1 (line end) - * @return {Object} point - * @private - */ -Edge.prototype._pointOnLine = function (percentage) { - return { - x: (1 - percentage) * this.from.x + percentage * this.to.x, - y: (1 - percentage) * this.from.y + percentage * this.to.y - } -}; - -/** - * Get a point on a circle - * @param {Number} x - * @param {Number} y - * @param {Number} radius - * @param {Number} percentage. Value between 0 (line start) and 1 (line end) - * @return {Object} point - * @private - */ -Edge.prototype._pointOnCircle = function (x, y, radius, percentage) { - var angle = (percentage - 3/8) * 2 * Math.PI; - return { - x: x + radius * Math.cos(angle), - y: y - radius * Math.sin(angle) - } -}; - -/** - * Redraw a edge as a line with an arrow halfway the line - * Draw this edge in the given canvas - * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d"); - * @param {CanvasRenderingContext2D} ctx - * @private - */ -Edge.prototype._drawArrowCenter = function(ctx) { - var point; - // set style - ctx.strokeStyle = this.color; - ctx.fillStyle = this.color; - ctx.lineWidth = this._getLineWidth(); - - if (this.from != this.to) { - // draw line - this._line(ctx); - - // draw an arrow halfway the line - var angle = Math.atan2((this.to.y - this.from.y), (this.to.x - this.from.x)); - var length = 10 + 5 * this.width; // TODO: make customizable? - point = this._pointOnLine(0.5); - ctx.arrow(point.x, point.y, angle, length); - ctx.fill(); - ctx.stroke(); - - // draw label - if (this.label) { - point = this._pointOnLine(0.5); - this._label(ctx, this.label, point.x, point.y); - } - } - else { - // draw circle - var x, y; - var radius = this.length / 4; - var node = this.from; - if (!node.width) { - node.resize(ctx); - } - if (node.width > node.height) { - x = node.x + node.width / 2; - y = node.y - radius; - } - else { - x = node.x + radius; - y = node.y - node.height / 2; - } - this._circle(ctx, x, y, radius); - - // draw all arrows - var angle = 0.2 * Math.PI; - var length = 10 + 5 * this.width; // TODO: make customizable? - point = this._pointOnCircle(x, y, radius, 0.5); - ctx.arrow(point.x, point.y, angle, length); - ctx.fill(); - ctx.stroke(); - - // draw label - if (this.label) { - point = this._pointOnCircle(x, y, radius, 0.5); - this._label(ctx, this.label, point.x, point.y); - } - } -}; - - - -/** - * Redraw a edge as a line with an arrow - * Draw this edge in the given canvas - * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d"); - * @param {CanvasRenderingContext2D} ctx - * @private - */ -Edge.prototype._drawArrow = function(ctx) { - // set style - ctx.strokeStyle = this.color; - ctx.fillStyle = this.color; - ctx.lineWidth = this._getLineWidth(); - - // draw line - var angle, length; - if (this.from != this.to) { - // calculate length and angle of the line - angle = Math.atan2((this.to.y - this.from.y), (this.to.x - this.from.x)); - var dx = (this.to.x - this.from.x); - var dy = (this.to.y - this.from.y); - var lEdge = Math.sqrt(dx * dx + dy * dy); - - var lFrom = this.from.distanceToBorder(ctx, angle + Math.PI); - var pFrom = (lEdge - lFrom) / lEdge; - var xFrom = (pFrom) * this.from.x + (1 - pFrom) * this.to.x; - var yFrom = (pFrom) * this.from.y + (1 - pFrom) * this.to.y; - - var lTo = this.to.distanceToBorder(ctx, angle); - var pTo = (lEdge - lTo) / lEdge; - var xTo = (1 - pTo) * this.from.x + pTo * this.to.x; - var yTo = (1 - pTo) * this.from.y + pTo * this.to.y; - - ctx.beginPath(); - ctx.moveTo(xFrom, yFrom); - ctx.lineTo(xTo, yTo); - ctx.stroke(); - - // draw arrow at the end of the line - length = 10 + 5 * this.width; // TODO: make customizable? - ctx.arrow(xTo, yTo, angle, length); - ctx.fill(); - ctx.stroke(); - - // draw label - if (this.label) { - var point = this._pointOnLine(0.5); - this._label(ctx, this.label, point.x, point.y); - } - } - else { - // draw circle - var node = this.from; - var x, y, arrow; - var radius = this.length / 4; - if (!node.width) { - node.resize(ctx); - } - if (node.width > node.height) { - x = node.x + node.width / 2; - y = node.y - radius; - arrow = { - x: x, - y: node.y, - angle: 0.9 * Math.PI - }; - } - else { - x = node.x + radius; - y = node.y - node.height / 2; - arrow = { - x: node.x, - y: y, - angle: 0.6 * Math.PI - }; - } - ctx.beginPath(); - // TODO: do not draw a circle, but an arc - // TODO: similarly, for a line without arrows, draw to the border of the nodes instead of the center - ctx.arc(x, y, radius, 0, 2 * Math.PI, false); - ctx.stroke(); - - // draw all arrows - length = 10 + 5 * this.width; // TODO: make customizable? - ctx.arrow(arrow.x, arrow.y, arrow.angle, length); - ctx.fill(); - ctx.stroke(); - - // draw label - if (this.label) { - point = this._pointOnCircle(x, y, radius, 0.5); - this._label(ctx, this.label, point.x, point.y); - } - } -}; - - - -/** - * Calculate the distance between a point (x3,y3) and a line segment from - * (x1,y1) to (x2,y2). - * http://stackoverflow.com/questions/849211/shortest-distancae-between-a-point-and-a-line-segment - * @param {number} x1 - * @param {number} y1 - * @param {number} x2 - * @param {number} y2 - * @param {number} x3 - * @param {number} y3 - * @private - */ -Edge._dist = function (x1,y1, x2,y2, x3,y3) { // x3,y3 is the point - var px = x2-x1, - py = y2-y1, - something = px*px + py*py, - u = ((x3 - x1) * px + (y3 - y1) * py) / something; - - if (u > 1) { - u = 1; - } - else if (u < 0) { - u = 0; - } - - var x = x1 + u * px, - y = y1 + u * py, - dx = x - x3, - dy = y - y3; - - //# Note: If the actual distance does not matter, - //# if you only want to compare what this function - //# returns to other results of this function, you - //# can just return the squared distance instead - //# (i.e. remove the sqrt) to gain a little performance - - return Math.sqrt(dx*dx + dy*dy); -}; - -/** - * Popup is a class to create a popup window with some text - * @param {Element} container The container object. - * @param {Number} [x] - * @param {Number} [y] - * @param {String} [text] - */ -function Popup(container, x, y, text) { - if (container) { - this.container = container; - } - else { - this.container = document.body; - } - this.x = 0; - this.y = 0; - this.padding = 5; - - if (x !== undefined && y !== undefined ) { - this.setPosition(x, y); - } - if (text !== undefined) { - this.setText(text); - } - - // create the frame - this.frame = document.createElement("div"); - var style = this.frame.style; - style.position = "absolute"; - style.visibility = "hidden"; - style.border = "1px solid #666"; - style.color = "black"; - style.padding = this.padding + "px"; - style.backgroundColor = "#FFFFC6"; - style.borderRadius = "3px"; - style.MozBorderRadius = "3px"; - style.WebkitBorderRadius = "3px"; - style.boxShadow = "3px 3px 10px rgba(128, 128, 128, 0.5)"; - style.whiteSpace = "nowrap"; - this.container.appendChild(this.frame); -}; - -/** - * @param {number} x Horizontal position of the popup window - * @param {number} y Vertical position of the popup window - */ -Popup.prototype.setPosition = function(x, y) { - this.x = parseInt(x); - this.y = parseInt(y); -}; - -/** - * Set the text for the popup window. This can be HTML code - * @param {string} text - */ -Popup.prototype.setText = function(text) { - this.frame.innerHTML = text; -}; - -/** - * Show the popup window - * @param {boolean} show Optional. Show or hide the window - */ -Popup.prototype.show = function (show) { - if (show === undefined) { - show = true; - } - - if (show) { - var height = this.frame.clientHeight; - var width = this.frame.clientWidth; - var maxHeight = this.frame.parentNode.clientHeight; - var maxWidth = this.frame.parentNode.clientWidth; - - var top = (this.y - height); - if (top + height + this.padding > maxHeight) { - top = maxHeight - height - this.padding; - } - if (top < this.padding) { - top = this.padding; - } - - var left = this.x; - if (left + width + this.padding > maxWidth) { - left = maxWidth - width - this.padding; - } - if (left < this.padding) { - left = this.padding; - } - - this.frame.style.left = left + "px"; - this.frame.style.top = top + "px"; - this.frame.style.visibility = "visible"; - } - else { - this.hide(); - } -}; - -/** - * Hide the popup window - */ -Popup.prototype.hide = function () { - this.frame.style.visibility = "hidden"; -}; - -/** - * @class Groups - * This class can store groups and properties specific for groups. - */ -Groups = function () { - this.clear(); - this.defaultIndex = 0; -}; - - -/** - * default constants for group colors - */ -Groups.DEFAULT = [ - {border: "#2B7CE9", background: "#97C2FC", highlight: {border: "#2B7CE9", background: "#D2E5FF"}}, // blue - {border: "#FFA500", background: "#FFFF00", highlight: {border: "#FFA500", background: "#FFFFA3"}}, // yellow - {border: "#FA0A10", background: "#FB7E81", highlight: {border: "#FA0A10", background: "#FFAFB1"}}, // red - {border: "#41A906", background: "#7BE141", highlight: {border: "#41A906", background: "#A1EC76"}}, // green - {border: "#E129F0", background: "#EB7DF4", highlight: {border: "#E129F0", background: "#F0B3F5"}}, // magenta - {border: "#7C29F0", background: "#AD85E4", highlight: {border: "#7C29F0", background: "#D3BDF0"}}, // purple - {border: "#C37F00", background: "#FFA807", highlight: {border: "#C37F00", background: "#FFCA66"}}, // orange - {border: "#4220FB", background: "#6E6EFD", highlight: {border: "#4220FB", background: "#9B9BFD"}}, // darkblue - {border: "#FD5A77", background: "#FFC0CB", highlight: {border: "#FD5A77", background: "#FFD1D9"}}, // pink - {border: "#4AD63A", background: "#C2FABC", highlight: {border: "#4AD63A", background: "#E6FFE3"}} // mint -]; - - -/** - * Clear all groups - */ -Groups.prototype.clear = function () { - this.groups = {}; - this.groups.length = function() - { - var i = 0; - for ( var p in this ) { - if (this.hasOwnProperty(p)) { - i++; - } - } - return i; - } -}; - - -/** - * get group properties of a groupname. If groupname is not found, a new group - * is added. - * @param {*} groupname Can be a number, string, Date, etc. - * @return {Object} group The created group, containing all group properties - */ -Groups.prototype.get = function (groupname) { - var group = this.groups[groupname]; - - if (group == undefined) { - // create new group - var index = this.defaultIndex % Groups.DEFAULT.length; - this.defaultIndex++; - group = {}; - group.color = Groups.DEFAULT[index]; - this.groups[groupname] = group; - } - - return group; -}; - -/** - * Add a custom group style - * @param {String} groupname - * @param {Object} style An object containing borderColor, - * backgroundColor, etc. - * @return {Object} group The created group object - */ -Groups.prototype.add = function (groupname, style) { - this.groups[groupname] = style; - if (style.color) { - style.color = Node.parseColor(style.color); - } - return style; -}; - -/** - * @class Images - * This class loads images and keeps them stored. - */ -Images = function () { - this.images = {}; - - this.callback = undefined; -}; - -/** - * Set an onload callback function. This will be called each time an image - * is loaded - * @param {function} callback - */ -Images.prototype.setOnloadCallback = function(callback) { - this.callback = callback; -}; - -/** - * - * @param {string} url Url of the image - * @return {Image} img The image object - */ -Images.prototype.load = function(url) { - var img = this.images[url]; - if (img == undefined) { - // create the image - var images = this; - img = new Image(); - this.images[url] = img; - img.onload = function() { - if (images.callback) { - images.callback(this); - } - }; - img.src = url; - } - - return img; -}; - -/** - * @constructor Graph - * Create a graph visualization, displaying nodes and edges. - * - * @param {Element} container The DOM element in which the Graph will - * be created. Normally a div element. - * @param {Object} data An object containing parameters - * {Array} nodes - * {Array} edges - * @param {Object} options Options - */ -function Graph (container, data, options) { - // create variables and set default values - this.containerElement = container; - this.width = '100%'; - this.height = '100%'; - this.refreshRate = 50; // milliseconds - this.stabilize = true; // stabilize before displaying the graph - this.selectable = true; - - // set constant values - this.constants = { - nodes: { - radiusMin: 5, - radiusMax: 20, - radius: 5, - distance: 100, // px - shape: 'ellipse', - image: undefined, - widthMin: 16, // px - widthMax: 64, // px - fontColor: 'black', - fontSize: 14, // px - //fontFace: verdana, - fontFace: 'arial', - color: { - border: '#2B7CE9', - background: '#97C2FC', - highlight: { - border: '#2B7CE9', - background: '#D2E5FF' - } - }, - borderColor: '#2B7CE9', - backgroundColor: '#97C2FC', - highlightColor: '#D2E5FF', - group: undefined - }, - edges: { - widthMin: 1, - widthMax: 15, - width: 1, - style: 'line', - color: '#343434', - fontColor: '#343434', - fontSize: 14, // px - fontFace: 'arial', - //distance: 100, //px - length: 100, // px - dash: { - length: 10, - gap: 5, - altLength: undefined - } - }, - minForce: 0.05, - minVelocity: 0.02, // px/s - maxIterations: 1000 // maximum number of iteration to stabilize - }; - - var graph = this; - this.nodes = {}; // object with Node objects - this.edges = {}; // object with Edge objects - // TODO: create a counter to keep track on the number of nodes having values - // TODO: create a counter to keep track on the number of nodes currently moving - // TODO: create a counter to keep track on the number of edges having values - - this.nodesData = null; // A DataSet or DataView - this.edgesData = null; // A DataSet or DataView - - // create event listeners used to subscribe on the DataSets of the nodes and edges - var me = this; - this.nodesListeners = { - 'add': function (event, params) { - me._addNodes(params.items); - me.start(); - }, - 'update': function (event, params) { - me._updateNodes(params.items); - me.start(); - }, - 'remove': function (event, params) { - me._removeNodes(params.items); - me.start(); - } - }; - this.edgesListeners = { - 'add': function (event, params) { - me._addEdges(params.items); - me.start(); - }, - 'update': function (event, params) { - me._updateEdges(params.items); - me.start(); - }, - 'remove': function (event, params) { - me._removeEdges(params.items); - me.start(); - } - }; - - this.groups = new Groups(); // object with groups - this.images = new Images(); // object with images - this.images.setOnloadCallback(function () { - graph._redraw(); - }); - - // properties of the data - this.moving = false; // True if any of the nodes have an undefined position - - this.selection = []; - this.timer = undefined; - - // create a frame and canvas - this._create(); - - // apply options - this.setOptions(options); - - // draw data - this.setData(data); -} - -/** - * Set nodes and edges, and optionally options as well. - * - * @param {Object} data Object containing parameters: - * {Array | DataSet | DataView} [nodes] Array with nodes - * {Array | DataSet | DataView} [edges] Array with edges - * {String} [dot] String containing data in DOT format - * {Options} [options] Object with options - */ -Graph.prototype.setData = function(data) { - if (data && data.dot && (data.nodes || data.edges)) { - throw new SyntaxError('Data must contain either parameter "dot" or ' + - ' parameter pair "nodes" and "edges", but not both.'); - } - - // set options - this.setOptions(data && data.options); - - // set all data - if (data && data.dot) { - // parse DOT file - if(data && data.dot) { - var dotData = vis.util.DOTToGraph(data.dot); - this.setData(dotData); - return; - } - } - else { - this._setNodes(data && data.nodes); - this._setEdges(data && data.edges); - } - - // find a stable position or start animating to a stable position - if (this.stabilize) { - this._doStabilize(); - } - this.start(); -}; - -/** - * Set options - * @param {Object} options - */ -Graph.prototype.setOptions = function (options) { - if (options) { - // retrieve parameter values - if (options.width != undefined) {this.width = options.width;} - if (options.height != undefined) {this.height = options.height;} - if (options.stabilize != undefined) {this.stabilize = options.stabilize;} - if (options.selectable != undefined) {this.selectable = options.selectable;} - - // TODO: work out these options and document them - if (options.edges) { - for (var prop in options.edges) { - if (options.edges.hasOwnProperty(prop)) { - this.constants.edges[prop] = options.edges[prop]; - } - } - - if (options.edges.length != undefined && - options.nodes && options.nodes.distance == undefined) { - this.constants.edges.length = options.edges.length; - this.constants.nodes.distance = options.edges.length * 1.25; - } - - if (!options.edges.fontColor) { - this.constants.edges.fontColor = options.edges.color; - } - - // Added to support dashed lines - // David Jordan - // 2012-08-08 - if (options.edges.dash) { - if (options.edges.dash.length != undefined) { - this.constants.edges.dash.length = options.edges.dash.length; - } - if (options.edges.dash.gap != undefined) { - this.constants.edges.dash.gap = options.edges.dash.gap; - } - if (options.edges.dash.altLength != undefined) { - this.constants.edges.dash.altLength = options.edges.dash.altLength; - } - } - } - - if (options.nodes) { - for (prop in options.nodes) { - if (options.nodes.hasOwnProperty(prop)) { - this.constants.nodes[prop] = options.nodes[prop]; - } - } - - if (options.nodes.color) { - this.constants.nodes.color = Node.parseColor(options.nodes.color); - } - - /* - if (options.nodes.widthMin) this.constants.nodes.radiusMin = options.nodes.widthMin; - if (options.nodes.widthMax) this.constants.nodes.radiusMax = options.nodes.widthMax; - */ - } - - if (options.groups) { - for (var groupname in options.groups) { - if (options.groups.hasOwnProperty(groupname)) { - var group = options.groups[groupname]; - this.groups.add(groupname, group); - } - } - } - } - - this.setSize(this.width, this.height); - this._setTranslation(this.frame.clientWidth / 2, this.frame.clientHeight / 2); - this._setScale(1); -}; - -/** - * fire an event - * @param {String} event The name of an event, for example 'select' - * @param {Object} params Optional object with event parameters - * @private - */ -Graph.prototype._trigger = function (event, params) { - events.trigger(this, event, params); -}; - - -/** - * Create the main frame for the Graph. - * This function is executed once when a Graph object is created. The frame - * contains a canvas, and this canvas contains all objects like the axis and - * nodes. - * @private - */ -Graph.prototype._create = function () { - // remove all elements from the container element. - while (this.containerElement.hasChildNodes()) { - this.containerElement.removeChild(this.containerElement.firstChild); - } - - this.frame = document.createElement('div'); - this.frame.className = 'graph-frame'; - this.frame.style.position = 'relative'; - this.frame.style.overflow = 'hidden'; - - // create the graph canvas (HTML canvas element) - this.frame.canvas = document.createElement( 'canvas' ); - this.frame.canvas.style.position = 'relative'; - this.frame.appendChild(this.frame.canvas); - if (!this.frame.canvas.getContext) { - var noCanvas = document.createElement( 'DIV' ); - noCanvas.style.color = 'red'; - noCanvas.style.fontWeight = 'bold' ; - noCanvas.style.padding = '10px'; - noCanvas.innerHTML = 'Error: your browser does not support HTML canvas'; - this.frame.canvas.appendChild(noCanvas); - } - - var me = this; - this.drag = {}; - this.pinch = {}; - this.hammer = Hammer(this.frame.canvas, { - prevent_default: true - }); - this.hammer.on('tap', me._onTap.bind(me) ); - this.hammer.on('hold', me._onHold.bind(me) ); - this.hammer.on('pinch', me._onPinch.bind(me) ); - this.hammer.on('touch', me._onTouch.bind(me) ); - this.hammer.on('dragstart', me._onDragStart.bind(me) ); - this.hammer.on('drag', me._onDrag.bind(me) ); - this.hammer.on('dragend', me._onDragEnd.bind(me) ); - this.hammer.on('mousewheel',me._onMouseWheel.bind(me) ); - this.hammer.on('DOMMouseScroll',me._onMouseWheel.bind(me) ); // for FF - this.hammer.on('mousemove', me._onMouseMoveTitle.bind(me) ); - - // add the frame to the container element - this.containerElement.appendChild(this.frame); -}; - -/** - * - * @param {{x: Number, y: Number}} pointer - * @return {Number | null} node - * @private - */ -Graph.prototype._getNodeAt = function (pointer) { - var x = this._canvasToX(pointer.x); - var y = this._canvasToY(pointer.y); - - var obj = { - left: x, - top: y, - right: x, - bottom: y - }; - - // if there are overlapping nodes, select the last one, this is the - // one which is drawn on top of the others - var overlappingNodes = this._getNodesOverlappingWith(obj); - return (overlappingNodes.length > 0) ? - overlappingNodes[overlappingNodes.length - 1] : null; -}; - -/** - * Get the pointer location from a touch location - * @param {{pageX: Number, pageY: Number}} touch - * @return {{x: Number, y: Number}} pointer - * @private - */ -Graph.prototype._getPointer = function (touch) { - return { - x: touch.pageX - vis.util.getAbsoluteLeft(this.frame.canvas), - y: touch.pageY - vis.util.getAbsoluteTop(this.frame.canvas) - }; -}; - -/** - * On start of a touch gesture, store the pointer - * @param event - * @private - */ -Graph.prototype._onTouch = function (event) { - this.drag.pointer = this._getPointer(event.gesture.touches[0]); - this.drag.pinched = false; - this.pinch.scale = this._getScale(); -}; - -/** - * handle drag start event - * @private - */ -Graph.prototype._onDragStart = function () { - var drag = this.drag; - - drag.selection = []; - drag.translation = this._getTranslation(); - drag.nodeId = this._getNodeAt(drag.pointer); - // note: drag.pointer is set in _onTouch to get the initial touch location - - var node = this.nodes[drag.nodeId]; - if (node) { - // select the clicked node if not yet selected - if (!node.isSelected()) { - this._selectNodes([drag.nodeId]); - } - - // create an array with the selected nodes and their original location and status - var me = this; - this.selection.forEach(function (id) { - var node = me.nodes[id]; - if (node) { - var s = { - id: id, - node: node, - - // store original x, y, xFixed and yFixed, make the node temporarily Fixed - x: node.x, - y: node.y, - xFixed: node.xFixed, - yFixed: node.yFixed - }; - - node.xFixed = true; - node.yFixed = true; - - drag.selection.push(s); - } - }); - - } -}; - -/** - * handle drag event - * @private - */ -Graph.prototype._onDrag = function (event) { - if (this.drag.pinched) { - return; - } - - var pointer = this._getPointer(event.gesture.touches[0]); - - var me = this, - drag = this.drag, - selection = drag.selection; - if (selection && selection.length) { - // calculate delta's and new location - var deltaX = pointer.x - drag.pointer.x, - deltaY = pointer.y - drag.pointer.y; - - // update position of all selected nodes - selection.forEach(function (s) { - var node = s.node; - - if (!s.xFixed) { - node.x = me._canvasToX(me._xToCanvas(s.x) + deltaX); - } - - if (!s.yFixed) { - node.y = me._canvasToY(me._yToCanvas(s.y) + deltaY); - } - }); - - // start animation if not yet running - if (!this.moving) { - this.moving = true; - this.start(); - } - } - else { - // move the graph - var diffX = pointer.x - this.drag.pointer.x; - var diffY = pointer.y - this.drag.pointer.y; - - this._setTranslation( - this.drag.translation.x + diffX, - this.drag.translation.y + diffY); - this._redraw(); - - this.moved = true; - } -}; - -/** - * handle drag start event - * @private - */ -Graph.prototype._onDragEnd = function () { - var selection = this.drag.selection; - if (selection) { - selection.forEach(function (s) { - // restore original xFixed and yFixed - s.node.xFixed = s.xFixed; - s.node.yFixed = s.yFixed; - }); - } -}; - -/** - * handle tap/click event: select/unselect a node - * @private - */ -Graph.prototype._onTap = function (event) { - var pointer = this._getPointer(event.gesture.touches[0]); - - var nodeId = this._getNodeAt(pointer); - var node = this.nodes[nodeId]; - if (node) { - // select this node - this._selectNodes([nodeId]); - - if (!this.moving) { - this._redraw(); - } - } - else { - // remove selection - this._unselectNodes(); - this._redraw(); - } -}; - -/** - * handle long tap event: multi select nodes - * @private - */ -Graph.prototype._onHold = function (event) { - var pointer = this._getPointer(event.gesture.touches[0]); - var nodeId = this._getNodeAt(pointer); - var node = this.nodes[nodeId]; - if (node) { - if (!node.isSelected()) { - // select this node, keep previous selection - var append = true; - this._selectNodes([nodeId], append); - } - else { - this._unselectNodes([nodeId]); - } - - if (!this.moving) { - this._redraw(); - } - } - else { - // Do nothing - } -}; - -/** - * Handle pinch event - * @param event - * @private - */ -Graph.prototype._onPinch = function (event) { - var pointer = this._getPointer(event.gesture.center); - - this.drag.pinched = true; - if (!('scale' in this.pinch)) { - this.pinch.scale = 1; - } - - // TODO: enable moving while pinching? - var scale = this.pinch.scale * event.gesture.scale; - this._zoom(scale, pointer) -}; - -/** - * Zoom the graph in or out - * @param {Number} scale a number around 1, and between 0.01 and 10 - * @param {{x: Number, y: Number}} pointer - * @return {Number} appliedScale scale is limited within the boundaries - * @private - */ -Graph.prototype._zoom = function(scale, pointer) { - var scaleOld = this._getScale(); - if (scale < 0.01) { - scale = 0.01; - } - if (scale > 10) { - scale = 10; - } - - var translation = this._getTranslation(); - var scaleFrac = scale / scaleOld; - var tx = (1 - scaleFrac) * pointer.x + translation.x * scaleFrac; - var ty = (1 - scaleFrac) * pointer.y + translation.y * scaleFrac; - - this._setScale(scale); - this._setTranslation(tx, ty); - this._redraw(); - - return scale; -}; - -/** - * Event handler for mouse wheel event, used to zoom the timeline - * See http://adomas.org/javascript-mouse-wheel/ - * https://github.com/EightMedia/hammer.js/issues/256 - * @param {MouseEvent} event - * @private - */ -Graph.prototype._onMouseWheel = function(event) { - // retrieve delta - var delta = 0; - if (event.wheelDelta) { /* IE/Opera. */ - delta = event.wheelDelta/120; - } else if (event.detail) { /* Mozilla case. */ - // In Mozilla, sign of delta is different than in IE. - // Also, delta is multiple of 3. - delta = -event.detail/3; - } - - // If delta is nonzero, handle it. - // Basically, delta is now positive if wheel was scrolled up, - // and negative, if wheel was scrolled down. - if (delta) { - if (!('mouswheelScale' in this.pinch)) { - this.pinch.mouswheelScale = 1; - } - - // calculate the new scale - var scale = this.pinch.mouswheelScale; - var zoom = delta / 10; - if (delta < 0) { - zoom = zoom / (1 - zoom); - } - scale *= (1 + zoom); - - // calculate the pointer location - var gesture = Hammer.event.collectEventData(this, 'scroll', event); - var pointer = this._getPointer(gesture.center); - - // apply the new scale - scale = this._zoom(scale, pointer); - - // store the new, applied scale - this.pinch.mouswheelScale = scale; - } - - // Prevent default actions caused by mouse wheel. - event.preventDefault(); -}; - - -/** - * Mouse move handler for checking whether the title moves over a node with a title. - * @param {Event} event - * @private - */ -Graph.prototype._onMouseMoveTitle = function (event) { - var gesture = Hammer.event.collectEventData(this, 'mousemove', event); - var pointer = this._getPointer(gesture.center); - - // check if the previously selected node is still selected - if (this.popupNode) { - this._checkHidePopup(pointer); - } - - // start a timeout that will check if the mouse is positioned above - // an element - var me = this; - var checkShow = function() { - me._checkShowPopup(pointer); - }; - if (this.popupTimer) { - clearInterval(this.popupTimer); // stop any running timer - } - if (!this.leftButtonDown) { - this.popupTimer = setTimeout(checkShow, 300); - } -}; - -/** - * Check if there is an element on the given position in the graph - * (a node or edge). If so, and if this element has a title, - * show a popup window with its title. - * - * @param {{x:Number, y:Number}} pointer - * @private - */ -Graph.prototype._checkShowPopup = function (pointer) { - var obj = { - left: this._canvasToX(pointer.x), - top: this._canvasToY(pointer.y), - right: this._canvasToX(pointer.x), - bottom: this._canvasToY(pointer.y) - }; - - var id; - var lastPopupNode = this.popupNode; - - if (this.popupNode == undefined) { - // search the nodes for overlap, select the top one in case of multiple nodes - var nodes = this.nodes; - for (id in nodes) { - if (nodes.hasOwnProperty(id)) { - var node = nodes[id]; - if (node.getTitle() != undefined && node.isOverlappingWith(obj)) { - this.popupNode = node; - break; - } - } - } - } - - if (this.popupNode == undefined) { - // search the edges for overlap - var edges = this.edges; - for (id in edges) { - if (edges.hasOwnProperty(id)) { - var edge = edges[id]; - if (edge.connected && (edge.getTitle() != undefined) && - edge.isOverlappingWith(obj)) { - this.popupNode = edge; - break; - } - } - } - } - - if (this.popupNode) { - // show popup message window - if (this.popupNode != lastPopupNode) { - var me = this; - if (!me.popup) { - me.popup = new Popup(me.frame); - } - - // adjust a small offset such that the mouse cursor is located in the - // bottom left location of the popup, and you can easily move over the - // popup area - me.popup.setPosition(pointer.x - 3, pointer.y - 3); - me.popup.setText(me.popupNode.getTitle()); - me.popup.show(); - } - } - else { - if (this.popup) { - this.popup.hide(); - } - } -}; - -/** - * Check if the popup must be hided, which is the case when the mouse is no - * longer hovering on the object - * @param {{x:Number, y:Number}} pointer - * @private - */ -Graph.prototype._checkHidePopup = function (pointer) { - if (!this.popupNode || !this._getNodeAt(pointer) ) { - this.popupNode = undefined; - if (this.popup) { - this.popup.hide(); - } - } -}; - -/** - * Unselect selected nodes. If no selection array is provided, all nodes - * are unselected - * @param {Object[]} selection Array with selection objects, each selection - * object has a parameter row. Optional - * @param {Boolean} triggerSelect If true (default), the select event - * is triggered when nodes are unselected - * @return {Boolean} changed True if the selection is changed - * @private - */ -Graph.prototype._unselectNodes = function(selection, triggerSelect) { - var changed = false; - var i, iMax, id; - - if (selection) { - // remove provided selections - for (i = 0, iMax = selection.length; i < iMax; i++) { - id = selection[i]; - this.nodes[id].unselect(); - - var j = 0; - while (j < this.selection.length) { - if (this.selection[j] == id) { - this.selection.splice(j, 1); - changed = true; - } - else { - j++; - } - } - } - } - else if (this.selection && this.selection.length) { - // remove all selections - for (i = 0, iMax = this.selection.length; i < iMax; i++) { - id = this.selection[i]; - this.nodes[id].unselect(); - changed = true; - } - this.selection = []; - } - - if (changed && (triggerSelect == true || triggerSelect == undefined)) { - // fire the select event - this._trigger('select'); - } - - return changed; -}; - -/** - * select all nodes on given location x, y - * @param {Array} selection an array with node ids - * @param {boolean} append If true, the new selection will be appended to the - * current selection (except for duplicate entries) - * @return {Boolean} changed True if the selection is changed - * @private - */ -Graph.prototype._selectNodes = function(selection, append) { - var changed = false; - var i, iMax; - - // TODO: the selectNodes method is a little messy, rework this - - // check if the current selection equals the desired selection - var selectionAlreadyThere = true; - if (selection.length != this.selection.length) { - selectionAlreadyThere = false; - } - else { - for (i = 0, iMax = Math.min(selection.length, this.selection.length); i < iMax; i++) { - if (selection[i] != this.selection[i]) { - selectionAlreadyThere = false; - break; - } - } - } - if (selectionAlreadyThere) { - return changed; - } - - if (append == undefined || append == false) { - // first deselect any selected node - var triggerSelect = false; - changed = this._unselectNodes(undefined, triggerSelect); - } - - for (i = 0, iMax = selection.length; i < iMax; i++) { - // add each of the new selections, but only when they are not duplicate - var id = selection[i]; - var isDuplicate = (this.selection.indexOf(id) != -1); - if (!isDuplicate) { - this.nodes[id].select(); - this.selection.push(id); - changed = true; - } - } - - if (changed) { - // fire the select event - this._trigger('select'); - } - - return changed; -}; - -/** - * retrieve all nodes overlapping with given object - * @param {Object} obj An object with parameters left, top, right, bottom - * @return {Number[]} An array with id's of the overlapping nodes - * @private - */ -Graph.prototype._getNodesOverlappingWith = function (obj) { - var nodes = this.nodes, - overlappingNodes = []; - - for (var id in nodes) { - if (nodes.hasOwnProperty(id)) { - if (nodes[id].isOverlappingWith(obj)) { - overlappingNodes.push(id); - } - } - } - - return overlappingNodes; -}; - -/** - * retrieve the currently selected nodes - * @return {Number[] | String[]} selection An array with the ids of the - * selected nodes. - */ -Graph.prototype.getSelection = function() { - return this.selection.concat([]); -}; - -/** - * select zero or more nodes - * @param {Number[] | String[]} selection An array with the ids of the - * selected nodes. - */ -Graph.prototype.setSelection = function(selection) { - var i, iMax, id; - - if (!selection || (selection.length == undefined)) - throw 'Selection must be an array with ids'; - - // first unselect any selected node - for (i = 0, iMax = this.selection.length; i < iMax; i++) { - id = this.selection[i]; - this.nodes[id].unselect(); - } - - this.selection = []; - - for (i = 0, iMax = selection.length; i < iMax; i++) { - id = selection[i]; - - var node = this.nodes[id]; - if (!node) { - throw new RangeError('Node with id "' + id + '" not found'); - } - node.select(); - this.selection.push(id); - } - - this.redraw(); -}; - -/** - * Validate the selection: remove ids of nodes which no longer exist - * @private - */ -Graph.prototype._updateSelection = function () { - var i = 0; - while (i < this.selection.length) { - var id = this.selection[i]; - if (!this.nodes[id]) { - this.selection.splice(i, 1); - } - else { - i++; - } - } -}; - -/** - * Temporary method to test calculating a hub value for the nodes - * @param {number} level Maximum number edges between two nodes in order - * to call them connected. Optional, 1 by default - * @return {Number[]} connectioncount array with the connection count - * for each node - * @private - */ -Graph.prototype._getConnectionCount = function(level) { - if (level == undefined) { - level = 1; - } - - // get the nodes connected to given nodes - function getConnectedNodes(nodes) { - var connectedNodes = []; - - for (var j = 0, jMax = nodes.length; j < jMax; j++) { - var node = nodes[j]; - - // find all nodes connected to this node - var edges = node.edges; - for (var i = 0, iMax = edges.length; i < iMax; i++) { - var edge = edges[i]; - var other = null; - - // check if connected - if (edge.from == node) - other = edge.to; - else if (edge.to == node) - other = edge.from; - - // check if the other node is not already in the list with nodes - var k, kMax; - if (other) { - for (k = 0, kMax = nodes.length; k < kMax; k++) { - if (nodes[k] == other) { - other = null; - break; - } - } - } - if (other) { - for (k = 0, kMax = connectedNodes.length; k < kMax; k++) { - if (connectedNodes[k] == other) { - other = null; - break; - } - } - } - - if (other) - connectedNodes.push(other); - } - } - - return connectedNodes; - } - - var connections = []; - var nodes = this.nodes; - for (var id in nodes) { - if (nodes.hasOwnProperty(id)) { - var c = [nodes[id]]; - for (var l = 0; l < level; l++) { - c = c.concat(getConnectedNodes(c)); - } - connections.push(c); - } - } - - var hubs = []; - for (var i = 0, len = connections.length; i < len; i++) { - hubs.push(connections[i].length); - } - - return hubs; -}; - - -/** - * Set a new size for the graph - * @param {string} width Width in pixels or percentage (for example '800px' - * or '50%') - * @param {string} height Height in pixels or percentage (for example '400px' - * or '30%') - */ -Graph.prototype.setSize = function(width, height) { - this.frame.style.width = width; - this.frame.style.height = height; - - this.frame.canvas.style.width = '100%'; - this.frame.canvas.style.height = '100%'; - - this.frame.canvas.width = this.frame.canvas.clientWidth; - this.frame.canvas.height = this.frame.canvas.clientHeight; -}; - -/** - * Set a data set with nodes for the graph - * @param {Array | DataSet | DataView} nodes The data containing the nodes. - * @private - */ -Graph.prototype._setNodes = function(nodes) { - var oldNodesData = this.nodesData; - - if (nodes instanceof DataSet || nodes instanceof DataView) { - this.nodesData = nodes; - } - else if (nodes instanceof Array) { - this.nodesData = new DataSet(); - this.nodesData.add(nodes); - } - else if (!nodes) { - this.nodesData = new DataSet(); - } - else { - throw new TypeError('Array or DataSet expected'); - } - - if (oldNodesData) { - // unsubscribe from old dataset - util.forEach(this.nodesListeners, function (callback, event) { - oldNodesData.unsubscribe(event, callback); - }); - } - - // remove drawn nodes - this.nodes = {}; - - if (this.nodesData) { - // subscribe to new dataset - var me = this; - util.forEach(this.nodesListeners, function (callback, event) { - me.nodesData.subscribe(event, callback); - }); - - // draw all new nodes - var ids = this.nodesData.getIds(); - this._addNodes(ids); - } - - this._updateSelection(); -}; - -/** - * Add nodes - * @param {Number[] | String[]} ids - * @private - */ -Graph.prototype._addNodes = function(ids) { - var id; - for (var i = 0, len = ids.length; i < len; i++) { - id = ids[i]; - var data = this.nodesData.get(id); - var node = new Node(data, this.images, this.groups, this.constants); - this.nodes[id] = node; // note: this may replace an existing node - - if (!node.isFixed()) { - // TODO: position new nodes in a smarter way! - var radius = this.constants.edges.length * 2; - var count = ids.length; - var angle = 2 * Math.PI * (i / count); - node.x = radius * Math.cos(angle); - node.y = radius * Math.sin(angle); - - // note: no not use node.isMoving() here, as that gives the current - // velocity of the node, which is zero after creation of the node. - this.moving = true; - } - } - - this._reconnectEdges(); - this._updateValueRange(this.nodes); -}; - -/** - * Update existing nodes, or create them when not yet existing - * @param {Number[] | String[]} ids - * @private - */ -Graph.prototype._updateNodes = function(ids) { - var nodes = this.nodes, - nodesData = this.nodesData; - for (var i = 0, len = ids.length; i < len; i++) { - var id = ids[i]; - var node = nodes[id]; - var data = nodesData.get(id); - if (node) { - // update node - node.setProperties(data, this.constants); - } - else { - // create node - node = new Node(properties, this.images, this.groups, this.constants); - nodes[id] = node; - - if (!node.isFixed()) { - this.moving = true; - } - } - } - - this._reconnectEdges(); - this._updateValueRange(nodes); -}; - -/** - * Remove existing nodes. If nodes do not exist, the method will just ignore it. - * @param {Number[] | String[]} ids - * @private - */ -Graph.prototype._removeNodes = function(ids) { - var nodes = this.nodes; - for (var i = 0, len = ids.length; i < len; i++) { - var id = ids[i]; - delete nodes[id]; - } - - this._reconnectEdges(); - this._updateSelection(); - this._updateValueRange(nodes); -}; - -/** - * Load edges by reading the data table - * @param {Array | DataSet | DataView} edges The data containing the edges. - * @private - * @private - */ -Graph.prototype._setEdges = function(edges) { - var oldEdgesData = this.edgesData; - - if (edges instanceof DataSet || edges instanceof DataView) { - this.edgesData = edges; - } - else if (edges instanceof Array) { - this.edgesData = new DataSet(); - this.edgesData.add(edges); - } - else if (!edges) { - this.edgesData = new DataSet(); - } - else { - throw new TypeError('Array or DataSet expected'); - } - - if (oldEdgesData) { - // unsubscribe from old dataset - util.forEach(this.edgesListeners, function (callback, event) { - oldEdgesData.unsubscribe(event, callback); - }); - } - - // remove drawn edges - this.edges = {}; - - if (this.edgesData) { - // subscribe to new dataset - var me = this; - util.forEach(this.edgesListeners, function (callback, event) { - me.edgesData.subscribe(event, callback); - }); - - // draw all new nodes - var ids = this.edgesData.getIds(); - this._addEdges(ids); - } - - this._reconnectEdges(); -}; - -/** - * Add edges - * @param {Number[] | String[]} ids - * @private - */ -Graph.prototype._addEdges = function (ids) { - var edges = this.edges, - edgesData = this.edgesData; - for (var i = 0, len = ids.length; i < len; i++) { - var id = ids[i]; - - var oldEdge = edges[id]; - if (oldEdge) { - oldEdge.disconnect(); - } - - var data = edgesData.get(id); - edges[id] = new Edge(data, this, this.constants); - } - - this.moving = true; - this._updateValueRange(edges); -}; - -/** - * Update existing edges, or create them when not yet existing - * @param {Number[] | String[]} ids - * @private - */ -Graph.prototype._updateEdges = function (ids) { - var edges = this.edges, - edgesData = this.edgesData; - for (var i = 0, len = ids.length; i < len; i++) { - var id = ids[i]; - - var data = edgesData.get(id); - var edge = edges[id]; - if (edge) { - // update edge - edge.disconnect(); - edge.setProperties(data, this.constants); - edge.connect(); - } - else { - // create edge - edge = new Edge(data, this, this.constants); - this.edges[id] = edge; - } - } - - this.moving = true; - this._updateValueRange(edges); -}; - -/** - * Remove existing edges. Non existing ids will be ignored - * @param {Number[] | String[]} ids - * @private - */ -Graph.prototype._removeEdges = function (ids) { - var edges = this.edges; - for (var i = 0, len = ids.length; i < len; i++) { - var id = ids[i]; - var edge = edges[id]; - if (edge) { - edge.disconnect(); - delete edges[id]; - } - } - - this.moving = true; - this._updateValueRange(edges); -}; - -/** - * Reconnect all edges - * @private - */ -Graph.prototype._reconnectEdges = function() { - var id, - nodes = this.nodes, - edges = this.edges; - for (id in nodes) { - if (nodes.hasOwnProperty(id)) { - nodes[id].edges = []; - } - } - - for (id in edges) { - if (edges.hasOwnProperty(id)) { - var edge = edges[id]; - edge.from = null; - edge.to = null; - edge.connect(); - } - } -}; - -/** - * Update the values of all object in the given array according to the current - * value range of the objects in the array. - * @param {Object} obj An object containing a set of Edges or Nodes - * The objects must have a method getValue() and - * setValueRange(min, max). - * @private - */ -Graph.prototype._updateValueRange = function(obj) { - var id; - - // determine the range of the objects - var valueMin = undefined; - var valueMax = undefined; - for (id in obj) { - if (obj.hasOwnProperty(id)) { - var value = obj[id].getValue(); - if (value !== undefined) { - valueMin = (valueMin === undefined) ? value : Math.min(value, valueMin); - valueMax = (valueMax === undefined) ? value : Math.max(value, valueMax); - } - } - } - - // adjust the range of all objects - if (valueMin !== undefined && valueMax !== undefined) { - for (id in obj) { - if (obj.hasOwnProperty(id)) { - obj[id].setValueRange(valueMin, valueMax); - } - } - } -}; - -/** - * Redraw the graph with the current data - * chart will be resized too. - */ -Graph.prototype.redraw = function() { - this.setSize(this.width, this.height); - - this._redraw(); -}; - -/** - * Redraw the graph with the current data - * @private - */ -Graph.prototype._redraw = function() { - var ctx = this.frame.canvas.getContext('2d'); - - // clear the canvas - var w = this.frame.canvas.width; - var h = this.frame.canvas.height; - ctx.clearRect(0, 0, w, h); - - // set scaling and translation - ctx.save(); - ctx.translate(this.translation.x, this.translation.y); - ctx.scale(this.scale, this.scale); - - this._drawEdges(ctx); - this._drawNodes(ctx); - - // restore original scaling and translation - ctx.restore(); -}; - -/** - * Set the translation of the graph - * @param {Number} offsetX Horizontal offset - * @param {Number} offsetY Vertical offset - * @private - */ -Graph.prototype._setTranslation = function(offsetX, offsetY) { - if (this.translation === undefined) { - this.translation = { - x: 0, - y: 0 - }; - } - - if (offsetX !== undefined) { - this.translation.x = offsetX; - } - if (offsetY !== undefined) { - this.translation.y = offsetY; - } -}; - -/** - * Get the translation of the graph - * @return {Object} translation An object with parameters x and y, both a number - * @private - */ -Graph.prototype._getTranslation = function() { - return { - x: this.translation.x, - y: this.translation.y - }; -}; - -/** - * Scale the graph - * @param {Number} scale Scaling factor 1.0 is unscaled - * @private - */ -Graph.prototype._setScale = function(scale) { - this.scale = scale; -}; -/** - * Get the current scale of the graph - * @return {Number} scale Scaling factor 1.0 is unscaled - * @private - */ -Graph.prototype._getScale = function() { - return this.scale; -}; - -/** - * Convert a horizontal point on the HTML canvas to the x-value of the model - * @param {number} x - * @returns {number} - * @private - */ -Graph.prototype._canvasToX = function(x) { - return (x - this.translation.x) / this.scale; -}; - -/** - * Convert an x-value in the model to a horizontal point on the HTML canvas - * @param {number} x - * @returns {number} - * @private - */ -Graph.prototype._xToCanvas = function(x) { - return x * this.scale + this.translation.x; -}; - -/** - * Convert a vertical point on the HTML canvas to the y-value of the model - * @param {number} y - * @returns {number} - * @private - */ -Graph.prototype._canvasToY = function(y) { - return (y - this.translation.y) / this.scale; -}; - -/** - * Convert an y-value in the model to a vertical point on the HTML canvas - * @param {number} y - * @returns {number} - * @private - */ -Graph.prototype._yToCanvas = function(y) { - return y * this.scale + this.translation.y ; -}; - -/** - * Redraw all nodes - * The 2d context of a HTML canvas can be retrieved by canvas.getContext('2d'); - * @param {CanvasRenderingContext2D} ctx - * @private - */ -Graph.prototype._drawNodes = function(ctx) { - // first draw the unselected nodes - var nodes = this.nodes; - var selected = []; - for (var id in nodes) { - if (nodes.hasOwnProperty(id)) { - if (nodes[id].isSelected()) { - selected.push(id); - } - else { - nodes[id].draw(ctx); - } - } - } - - // draw the selected nodes on top - for (var s = 0, sMax = selected.length; s < sMax; s++) { - nodes[selected[s]].draw(ctx); - } -}; - -/** - * Redraw all edges - * The 2d context of a HTML canvas can be retrieved by canvas.getContext('2d'); - * @param {CanvasRenderingContext2D} ctx - * @private - */ -Graph.prototype._drawEdges = function(ctx) { - var edges = this.edges; - for (var id in edges) { - if (edges.hasOwnProperty(id)) { - var edge = edges[id]; - if (edge.connected) { - edges[id].draw(ctx); - } - } - } -}; - -/** - * Find a stable position for all nodes - * @private - */ -Graph.prototype._doStabilize = function() { - var start = new Date(); - - // find stable position - var count = 0; - var vmin = this.constants.minVelocity; - var stable = false; - while (!stable && count < this.constants.maxIterations) { - this._calculateForces(); - this._discreteStepNodes(); - stable = !this._isMoving(vmin); - count++; - } - - var end = new Date(); - - // console.log('Stabilized in ' + (end-start) + ' ms, ' + count + ' iterations' ); // TODO: cleanup -}; - -/** - * Calculate the external forces acting on the nodes - * Forces are caused by: edges, repulsing forces between nodes, gravity - * @private - */ -Graph.prototype._calculateForces = function() { - // create a local edge to the nodes and edges, that is faster - var id, dx, dy, angle, distance, fx, fy, - repulsingForce, springForce, length, edgeLength, - nodes = this.nodes, - edges = this.edges; - - // gravity, add a small constant force to pull the nodes towards the center of - // the graph - // Also, the forces are reset to zero in this loop by using _setForce instead - // of _addForce - var gravity = 0.01, - gx = this.frame.canvas.clientWidth / 2, - gy = this.frame.canvas.clientHeight / 2; - for (id in nodes) { - if (nodes.hasOwnProperty(id)) { - var node = nodes[id]; - dx = gx - node.x; - dy = gy - node.y; - angle = Math.atan2(dy, dx); - fx = Math.cos(angle) * gravity; - fy = Math.sin(angle) * gravity; - - node._setForce(fx, fy); - } - } - - // repulsing forces between nodes - var minimumDistance = this.constants.nodes.distance, - steepness = 10; // higher value gives steeper slope of the force around the given minimumDistance - - for (var id1 in nodes) { - if (nodes.hasOwnProperty(id1)) { - var node1 = nodes[id1]; - for (var id2 in nodes) { - if (nodes.hasOwnProperty(id2)) { - var node2 = nodes[id2]; - // calculate normally distributed force - dx = node2.x - node1.x; - dy = node2.y - node1.y; - distance = Math.sqrt(dx * dx + dy * dy); - angle = Math.atan2(dy, dx); - - // TODO: correct factor for repulsing force - //repulsingForce = 2 * Math.exp(-5 * (distance * distance) / (dmin * dmin) ); // TODO: customize the repulsing force - //repulsingForce = Math.exp(-1 * (distance * distance) / (dmin * dmin) ); // TODO: customize the repulsing force - repulsingForce = 1 / (1 + Math.exp((distance / minimumDistance - 1) * steepness)); // TODO: customize the repulsing force - fx = Math.cos(angle) * repulsingForce; - fy = Math.sin(angle) * repulsingForce; - - node1._addForce(-fx, -fy); - node2._addForce(fx, fy); - } - } - } - } - - /* TODO: re-implement repulsion of edges - for (var n = 0; n < nodes.length; n++) { - for (var l = 0; l < edges.length; l++) { - var lx = edges[l].from.x+(edges[l].to.x - edges[l].from.x)/2, - ly = edges[l].from.y+(edges[l].to.y - edges[l].from.y)/2, - - // calculate normally distributed force - dx = nodes[n].x - lx, - dy = nodes[n].y - ly, - distance = Math.sqrt(dx * dx + dy * dy), - angle = Math.atan2(dy, dx), - - - // TODO: correct factor for repulsing force - //var repulsingforce = 2 * Math.exp(-5 * (distance * distance) / (dmin * dmin) ); // TODO: customize the repulsing force - //repulsingforce = Math.exp(-1 * (distance * distance) / (dmin * dmin) ), // TODO: customize the repulsing force - repulsingforce = 1 / (1 + Math.exp((distance / (minimumDistance / 2) - 1) * steepness)), // TODO: customize the repulsing force - fx = Math.cos(angle) * repulsingforce, - fy = Math.sin(angle) * repulsingforce; - nodes[n]._addForce(fx, fy); - edges[l].from._addForce(-fx/2,-fy/2); - edges[l].to._addForce(-fx/2,-fy/2); - } - } - */ - - // forces caused by the edges, modelled as springs - for (id in edges) { - if (edges.hasOwnProperty(id)) { - var edge = edges[id]; - if (edge.connected) { - dx = (edge.to.x - edge.from.x); - dy = (edge.to.y - edge.from.y); - //edgeLength = (edge.from.width + edge.from.height + edge.to.width + edge.to.height)/2 || edge.length; // TODO: dmin - //edgeLength = (edge.from.width + edge.to.width)/2 || edge.length; // TODO: dmin - //edgeLength = 20 + ((edge.from.width + edge.to.width) || 0) / 2; - edgeLength = edge.length; - length = Math.sqrt(dx * dx + dy * dy); - angle = Math.atan2(dy, dx); - - springForce = edge.stiffness * (edgeLength - length); - - fx = Math.cos(angle) * springForce; - fy = Math.sin(angle) * springForce; - - edge.from._addForce(-fx, -fy); - edge.to._addForce(fx, fy); - } - } - } - - /* TODO: re-implement repulsion of edges - // repulsing forces between edges - var minimumDistance = this.constants.edges.distance, - steepness = 10; // higher value gives steeper slope of the force around the given minimumDistance - for (var l = 0; l < edges.length; l++) { - //Keep distance from other edge centers - for (var l2 = l + 1; l2 < this.edges.length; l2++) { - //var dmin = (nodes[n].width + nodes[n].height + nodes[n2].width + nodes[n2].height) / 1 || minimumDistance, // TODO: dmin - //var dmin = (nodes[n].width + nodes[n2].width)/2 || minimumDistance, // TODO: dmin - //dmin = 40 + ((nodes[n].width/2 + nodes[n2].width/2) || 0), - var lx = edges[l].from.x+(edges[l].to.x - edges[l].from.x)/2, - ly = edges[l].from.y+(edges[l].to.y - edges[l].from.y)/2, - l2x = edges[l2].from.x+(edges[l2].to.x - edges[l2].from.x)/2, - l2y = edges[l2].from.y+(edges[l2].to.y - edges[l2].from.y)/2, - - // calculate normally distributed force - dx = l2x - lx, - dy = l2y - ly, - distance = Math.sqrt(dx * dx + dy * dy), - angle = Math.atan2(dy, dx), - - - // TODO: correct factor for repulsing force - //var repulsingforce = 2 * Math.exp(-5 * (distance * distance) / (dmin * dmin) ); // TODO: customize the repulsing force - //repulsingforce = Math.exp(-1 * (distance * distance) / (dmin * dmin) ), // TODO: customize the repulsing force - repulsingforce = 1 / (1 + Math.exp((distance / minimumDistance - 1) * steepness)), // TODO: customize the repulsing force - fx = Math.cos(angle) * repulsingforce, - fy = Math.sin(angle) * repulsingforce; - - edges[l].from._addForce(-fx, -fy); - edges[l].to._addForce(-fx, -fy); - edges[l2].from._addForce(fx, fy); - edges[l2].to._addForce(fx, fy); - } - } - */ -}; - - -/** - * Check if any of the nodes is still moving - * @param {number} vmin the minimum velocity considered as 'moving' - * @return {boolean} true if moving, false if non of the nodes is moving - * @private - */ -Graph.prototype._isMoving = function(vmin) { - // TODO: ismoving does not work well: should check the kinetic energy, not its velocity - var nodes = this.nodes; - for (var id in nodes) { - if (nodes.hasOwnProperty(id) && nodes[id].isMoving(vmin)) { - return true; - } - } - return false; -}; - - -/** - * Perform one discrete step for all nodes - * @private - */ -Graph.prototype._discreteStepNodes = function() { - var interval = this.refreshRate / 1000.0; // in seconds - var nodes = this.nodes; - for (var id in nodes) { - if (nodes.hasOwnProperty(id)) { - nodes[id].discreteStep(interval); - } - } -}; - -/** - * Start animating nodes and edges - */ -Graph.prototype.start = function() { - if (this.moving) { - this._calculateForces(); - this._discreteStepNodes(); - - var vmin = this.constants.minVelocity; - this.moving = this._isMoving(vmin); - } - - if (this.moving) { - // start animation. only start timer if it is not already running - if (!this.timer) { - var graph = this; - this.timer = window.setTimeout(function () { - graph.timer = undefined; - graph.start(); - graph._redraw(); - }, this.refreshRate); - } - } - else { - this._redraw(); - } -}; - -/** - * Stop animating nodes and edges. - */ -Graph.prototype.stop = function () { - if (this.timer) { - window.clearInterval(this.timer); - this.timer = undefined; - } -}; - -/** - * vis.js module exports - */ -var vis = { - util: util, - events: events, - - Controller: Controller, - DataSet: DataSet, - DataView: DataView, - Range: Range, - Stack: Stack, - TimeStep: TimeStep, - EventBus: EventBus, - - components: { - items: { - Item: Item, - ItemBox: ItemBox, - ItemPoint: ItemPoint, - ItemRange: ItemRange - }, - - Component: Component, - Panel: Panel, - RootPanel: RootPanel, - ItemSet: ItemSet, - TimeAxis: TimeAxis - }, - - graph: { - Node: Node, - Edge: Edge, - Popup: Popup, - Groups: Groups, - Images: Images - }, - - Timeline: Timeline, - Graph: Graph -}; - -/** - * CommonJS module exports - */ -if (typeof exports !== 'undefined') { - exports = vis; -} -if (typeof module !== 'undefined' && typeof module.exports !== 'undefined') { - module.exports = vis; -} - -/** - * AMD module exports - */ -if (typeof(define) === 'function') { - define(function () { - return vis; - }); -} - -/** - * Window exports - */ -if (typeof window !== 'undefined') { - // attach the module to the window, load as a regular javascript file - window['vis'] = vis; -} - -// inject css -util.loadCss("/* vis.js stylesheet */\n.vis.timeline {\r\n}\r\n\n\r\n.vis.timeline.rootpanel {\r\n position: relative;\r\n overflow: hidden;\r\n\r\n border: 1px solid #bfbfbf;\r\n -moz-box-sizing: border-box;\r\n box-sizing: border-box;\r\n}\r\n\r\n.vis.timeline .panel {\r\n position: absolute;\r\n overflow: hidden;\r\n}\r\n\n\r\n.vis.timeline .groupset {\r\n position: absolute;\r\n padding: 0;\r\n margin: 0;\r\n}\r\n\r\n.vis.timeline .labels {\r\n position: absolute;\r\n top: 0;\r\n left: 0;\r\n width: 100%;\r\n height: 100%;\r\n\r\n padding: 0;\r\n margin: 0;\r\n\r\n border-right: 1px solid #bfbfbf;\r\n box-sizing: border-box;\r\n -moz-box-sizing: border-box;\r\n}\r\n\r\n.vis.timeline .labels .label-set {\r\n position: absolute;\r\n top: 0;\r\n left: 0;\r\n width: 100%;\r\n height: 100%;\r\n\r\n overflow: hidden;\r\n\r\n border-top: none;\r\n border-bottom: 1px solid #bfbfbf;\r\n}\r\n\r\n.vis.timeline .labels .label-set .label {\r\n position: absolute;\r\n left: 0;\r\n top: 0;\r\n width: 100%;\r\n color: #4d4d4d;\r\n}\r\n\r\n.vis.timeline.top .labels .label-set .label,\r\n.vis.timeline.top .groupset .itemset-axis {\r\n border-top: 1px solid #bfbfbf;\r\n border-bottom: none;\r\n}\r\n\r\n.vis.timeline.bottom .labels .label-set .label,\r\n.vis.timeline.bottom .groupset .itemset-axis {\r\n border-top: none;\r\n border-bottom: 1px solid #bfbfbf;\r\n}\r\n\r\n.vis.timeline .labels .label-set .label .inner {\r\n display: inline-block;\r\n padding: 5px;\r\n}\r\n\n\r\n.vis.timeline .itemset {\r\n position: absolute;\r\n padding: 0;\r\n margin: 0;\r\n overflow: hidden;\r\n}\r\n\r\n.vis.timeline .background {\r\n}\r\n\r\n.vis.timeline .foreground {\r\n}\r\n\r\n.vis.timeline .itemset-axis {\r\n position: absolute;\r\n}\r\n\n\r\n.vis.timeline .item {\r\n position: absolute;\r\n color: #1A1A1A;\r\n border-color: #97B0F8;\r\n background-color: #D5DDF6;\r\n display: inline-block;\r\n}\r\n\r\n.vis.timeline .item.selected {\r\n border-color: #FFC200;\r\n background-color: #FFF785;\r\n z-index: 999;\r\n}\r\n\r\n.vis.timeline .item.cluster {\r\n /* TODO: use another color or pattern? */\r\n background: #97B0F8 url('img/cluster_bg.png');\r\n color: white;\r\n}\r\n.vis.timeline .item.cluster.point {\r\n border-color: #D5DDF6;\r\n}\r\n\r\n.vis.timeline .item.box {\r\n text-align: center;\r\n border-style: solid;\r\n border-width: 1px;\r\n border-radius: 5px;\r\n -moz-border-radius: 5px; /* For Firefox 3.6 and older */\r\n}\r\n\r\n.vis.timeline .item.point {\r\n background: none;\r\n}\r\n\r\n.vis.timeline .dot {\r\n border: 5px solid #97B0F8;\r\n position: absolute;\r\n border-radius: 5px;\r\n -moz-border-radius: 5px; /* For Firefox 3.6 and older */\r\n}\r\n\r\n.vis.timeline .item.range {\r\n overflow: hidden;\r\n border-style: solid;\r\n border-width: 1px;\r\n border-radius: 2px;\r\n -moz-border-radius: 2px; /* For Firefox 3.6 and older */\r\n}\r\n\r\n.vis.timeline .item.rangeoverflow {\r\n border-style: solid;\r\n border-width: 1px;\r\n border-radius: 2px;\r\n -moz-border-radius: 2px; /* For Firefox 3.6 and older */\r\n}\r\n\r\n.vis.timeline .item.range .drag-left, .vis.timeline .item.rangeoverflow .drag-left {\r\n cursor: w-resize;\r\n z-index: 1000;\r\n}\r\n\r\n.vis.timeline .item.range .drag-right, .vis.timeline .item.rangeoverflow .drag-right {\r\n cursor: e-resize;\r\n z-index: 1000;\r\n}\r\n\r\n.vis.timeline .item.range .content, .vis.timeline .item.rangeoverflow .content {\r\n position: relative;\r\n display: inline-block;\r\n}\r\n\r\n.vis.timeline .item.line {\r\n position: absolute;\r\n width: 0;\r\n border-left-width: 1px;\r\n border-left-style: solid;\r\n}\r\n\r\n.vis.timeline .item .content {\r\n margin: 5px;\r\n white-space: nowrap;\r\n overflow: hidden;\r\n}\r\n\n.vis.timeline .axis {\r\n position: relative;\r\n}\r\n\r\n.vis.timeline .axis .text {\r\n position: absolute;\r\n color: #4d4d4d;\r\n padding: 3px;\r\n white-space: nowrap;\r\n}\r\n\r\n.vis.timeline .axis .text.measure {\r\n position: absolute;\r\n padding-left: 0;\r\n padding-right: 0;\r\n margin-left: 0;\r\n margin-right: 0;\r\n visibility: hidden;\r\n}\r\n\r\n.vis.timeline .axis .grid.vertical {\r\n position: absolute;\r\n width: 0;\r\n border-right: 1px solid;\r\n}\r\n\r\n.vis.timeline .axis .grid.horizontal {\r\n position: absolute;\r\n left: 0;\r\n width: 100%;\r\n height: 0;\r\n border-bottom: 1px solid;\r\n}\r\n\r\n.vis.timeline .axis .grid.minor {\r\n border-color: #e5e5e5;\r\n}\r\n\r\n.vis.timeline .axis .grid.major {\r\n border-color: #bfbfbf;\r\n}\r\n\n.vis.timeline .currenttime {\r\n background-color: #FF7F6E;\r\n width: 2px;\r\n z-index: 9;\r\n}\n.vis.timeline .customtime {\r\n background-color: #6E94FF;\r\n width: 2px;\r\n cursor: move;\r\n z-index: 9;\r\n}\n");