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vis.js is a dynamic, browser-based visualization library
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/**
* vis.js
* https://github.com/almende/vis
*
* A dynamic, browser-based visualization library.
*
* @version 0.1.0-SNAPSHOT
* @date 2013-06-18
*
* @license
* Copyright (C) 2011-2013 Almende B.V, http://almende.com
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy
* of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
(function(e){if("function"==typeof bootstrap)bootstrap("vis",e);else if("object"==typeof exports)module.exports=e();else if("function"==typeof define&&define.amd)define(e);else if("undefined"!=typeof ses){if(!ses.ok())return;ses.makeVis=e}else"undefined"!=typeof window?window.vis=e():global.vis=e()})(function(){var define,ses,bootstrap,module,exports;
return (function(e,t,n){function i(n,s){if(!t[n]){if(!e[n]){var o=typeof require=="function"&&require;if(!s&&o)return o(n,!0);if(r)return r(n,!0);throw new Error("Cannot find module '"+n+"'")}var u=t[n]={exports:{}};e[n][0].call(u.exports,function(t){var r=e[n][1][t];return i(r?r:t)},u,u.exports)}return t[n].exports}var r=typeof require=="function"&&require;for(var s=0;s<n.length;s++)i(n[s]);return i})({1:[function(require,module,exports){
(function(){/**
* vis.js module imports
*/
var moment = require('moment');
/**
* 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;
};
/**
* Cast 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.cast = function cast(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);
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)) {
// parse ASP.Net Date pattern,
// for example '/Date(1198908717056)/' or '/Date(1198908717056-0700)/'
// code from http://momentjs.com/
match = ASPDateRegex.exec(object);
if (match) {
return new Date(Number(match[1])); // parse number
}
else {
return moment(object).toDate(); // parse string
}
}
else {
throw new Error(
'Cannot cast 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.clone();
}
if (util.isString(object)) {
// parse ASP.Net Date pattern,
// for example '/Date(1198908717056)/' or '/Date(1198908717056-0700)/'
// code from http://momentjs.com/
match = ASPDateRegex.exec(object);
if (match) {
return moment(Number(match[1])); // parse number
}
else {
return moment(object); // parse string
}
}
else {
throw new Error(
'Cannot cast object of type ' + util.getType(object) +
' to type Date');
}
case 'ISODate':
if (object instanceof Date) {
return object.toISOString();
}
else if (moment.isMoment(object)) {
return object.toDate().toISOString();
}
else if (util.isNumber(object) || util.isString(object)) {
return moment(object).toDate().toISOString();
}
else {
throw new Error(
'Cannot cast object of type ' + util.getType(object) +
' to type ISODate');
}
case 'ASPDate':
if (object instanceof Date) {
return '/Date(' + object.valueOf() + ')/';
}
else if (util.isNumber(object) || util.isString(object)) {
return '/Date(' + moment(object).valueOf() + ')/';
}
else {
throw new Error(
'Cannot cast object of type ' + util.getType(object) +
' to type ASPDate');
}
default:
throw new Error('Cannot cast object of type ' + util.getType(object) +
' to type "' + type + '"');
}
};
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 = {};
/**
* Cast a value as 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;
};
/**
* Cast a value as 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;
};
/**
* Cast a value as 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;
};
/**
* Cast a size or location in 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;
}
};
/**
* Cast a value as 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);
};
// 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();
};
}
/**
* 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',
* fieldTypes: {
* // ...
* }
* });
*
* 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.<String, String} fieldTypes
* A map with field names as key,
* and the field type as value.
* @constructor DataSet
*/
// TODO: add a DataSet constructor DataSet(data, options)
function DataSet (options) {
this.id = util.randomUUID();
this.options = options || {};
this.data = {}; // map with data indexed by id
this.fieldId = this.options.fieldId || 'id'; // name of the field containing id
this.fieldTypes = {}; // field types by field name
if (this.options.fieldTypes) {
for (var field in this.options.fieldTypes) {
if (this.options.fieldTypes.hasOwnProperty(field)) {
var value = this.options.fieldTypes[field];
if (value == 'Date' || value == 'ISODate' || value == 'ASPDate') {
this.fieldTypes[field] = 'Date';
}
else {
this.fieldTypes[field] = value;
}
}
}
}
// event subscribers
this.subscribers = {};
this.internalIds = {}; // internally generated id's
}
/**
* Subscribe to an event, add an event listener
* @param {String} event Event name. Available events: 'put', 'update',
* 'remove'
* @param {function} callback Callback method. Called with three parameters:
* {String} event
* {Object | null} params
* {String} senderId
* @param {String} [id] Optional id for the sender, used to filter
* events triggered by the sender itself.
*/
DataSet.prototype.subscribe = function (event, callback, id) {
var subscribers = this.subscribers[event];
if (!subscribers) {
subscribers = [];
this.subscribers[event] = subscribers;
}
subscribers.push({
id: id ? String(id) : null,
callback: callback
});
};
/**
* Unsubscribe from an event, remove an event listener
* @param {String} event
* @param {function} callback
*/
DataSet.prototype.unsubscribe = function (event, callback) {
var subscribers = this.subscribers[event];
if (subscribers) {
this.subscribers[event] = subscribers.filter(function (listener) {
return (listener.callback != callback);
});
}
};
/**
* Trigger an event
* @param {String} event
* @param {Object | null} params
* @param {String} [senderId] Optional id of the sender.
* @private
*/
DataSet.prototype._trigger = function (event, params, senderId) {
if (event == '*') {
throw new Error('Cannot trigger event *');
}
var subscribers = [];
if (event in this.subscribers) {
subscribers = subscribers.concat(this.subscribers[event]);
}
if ('*' in this.subscribers) {
subscribers = subscribers.concat(this.subscribers['*']);
}
for (var i = 0; i < subscribers.length; i++) {
var subscriber = subscribers[i];
if (subscriber.callback) {
subscriber.callback(event, params, senderId || null);
}
}
};
/**
* Add data.
* Adding an item will fail when there already is an item with the same id.
* @param {Object | Array | DataTable} data
* @param {String} [senderId] Optional sender id
*/
DataSet.prototype.add = function (data, senderId) {
var addedItems = [],
id,
me = this;
if (data instanceof Array) {
// Array
for (var i = 0, len = data.length; i < len; i++) {
id = me._addItem(data[i]);
addedItems.push(id);
}
}
else if (util.isDataTable(data)) {
// Google DataTable
var columns = this._getColumnNames(data);
for (var row = 0, rows = data.getNumberOfRows(); row < rows; row++) {
var item = {};
for (var col = 0, cols = columns.length; col < cols; col++) {
var field = columns[col];
item[field] = data.getValue(row, col);
}
id = me._addItem(item);
addedItems.push(id);
}
}
else if (data instanceof Object) {
// Single item
id = me._addItem(data);
addedItems.push(id);
}
else {
throw new Error('Unknown dataType');
}
if (addedItems.length) {
this._trigger('add', {items: addedItems}, senderId);
}
};
/**
* Update existing items. When an item does not exist, it will be created
* @param {Object | Array | DataTable} data
* @param {String} [senderId] Optional sender id
*/
DataSet.prototype.update = function (data, senderId) {
var addedItems = [],
updatedItems = [],
me = this,
fieldId = me.fieldId;
var addOrUpdate = function (item) {
var id = item[fieldId];
if (me.data[id]) {
// update item
id = me._updateItem(item);
updatedItems.push(id);
}
else {
// add new item
id = me._addItem(item);
addedItems.push(id);
}
};
if (data instanceof Array) {
// Array
for (var i = 0, len = data.length; i < len; i++) {
addOrUpdate(data[i]);
}
}
else if (util.isDataTable(data)) {
// Google DataTable
var columns = this._getColumnNames(data);
for (var row = 0, rows = data.getNumberOfRows(); row < rows; row++) {
var item = {};
for (var col = 0, cols = columns.length; col < cols; col++) {
var field = columns[col];
item[field] = data.getValue(row, col);
}
addOrUpdate(item);
}
}
else if (data instanceof Object) {
// Single item
addOrUpdate(data);
}
else {
throw new Error('Unknown dataType');
}
if (addedItems.length) {
this._trigger('add', {items: addedItems}, senderId);
}
if (updatedItems.length) {
this._trigger('update', {items: updatedItems}, senderId);
}
};
/**
* Get a data item or multiple items.
*
* Usage:
*
* get()
* get(options: Object)
* get(options: Object, data: Array | DataTable)
*
* get(id: Number | String)
* get(id: Number | String, options: Object)
* get(id: Number | String, options: Object, data: Array | DataTable)
*
* get(ids: Number[] | String[])
* get(ids: Number[] | String[], options: Object)
* get(ids: Number[] | String[], 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.<String, String>} [fieldTypes]
* {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 fieldTypes = options && options.fieldTypes || this.options.fieldTypes;
var filter = options && options.filter;
var items = [], item, itemId, i, len;
// cast items
if (id != undefined) {
// return a single item
item = me._getItem(id, fieldTypes);
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], fieldTypes);
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, fieldTypes);
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,
fieldTypes = options && options.fieldTypes || this.options.fieldTypes,
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, fieldTypes);
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, fieldTypes);
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.<String, String>} [fieldTypes]
* {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,
fieldTypes = options && options.fieldTypes || this.options.fieldTypes,
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, fieldTypes);
if (!filter || filter(item)) {
callback(item, id);
}
}
}
}
};
/**
* Map every item in the dataset.
* @param {function} callback
* @param {Object} [options] Available options:
* {Object.<String, String>} [fieldTypes]
* {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,
fieldTypes = options && options.fieldTypes || this.options.fieldTypes,
mappedItems = [],
data = this.data,
item;
// cast and filter items
for (var id in data) {
if (data.hasOwnProperty(id)) {
item = this._getItem(id, fieldTypes);
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
*/
DataSet.prototype.remove = function (id, senderId) {
var removedItems = [],
i, len;
if (util.isNumber(id) || util.isString(id)) {
delete this.data[id];
delete this.internalIds[id];
removedItems.push(id);
}
else if (id instanceof Array) {
for (i = 0, len = id.length; i < len; i++) {
this.remove(id[i]);
}
removedItems = items.concat(id);
}
else if (id instanceof Object) {
// search for the object
for (i in this.data) {
if (this.data.hasOwnProperty(i)) {
if (this.data[i] == id) {
delete this.data[i];
delete this.internalIds[i];
removedItems.push(i);
}
}
}
}
if (removedItems.length) {
this._trigger('remove', {items: removedItems}, senderId);
}
};
/**
* Clear the data
* @param {String} [senderId] Optional sender id
*/
DataSet.prototype.clear = function (senderId) {
var ids = Object.keys(this.data);
this.data = {};
this.internalIds = {};
this._trigger('remove', {items: ids}, senderId);
};
/**
* 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.fieldTypes[field],
count = 0;
for (var prop in data) {
if (data.hasOwnProperty(prop)) {
var item = data[prop];
var value = util.cast(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 type = this.fieldTypes[field]; // type may be undefined
d[field] = util.cast(item[field], type);
}
}
this.data[id] = d;
return id;
};
/**
* Get an item. Fields can be casted to a specific type
* @param {String} id
* @param {Object.<String, String>} [fieldTypes] Cast field types
* @return {Object | null} item
* @private
*/
DataSet.prototype._getItem = function (id, fieldTypes) {
var field, value;
// get the item from the dataset
var raw = this.data[id];
if (!raw) {
return null;
}
// cast the items field types
var casted = {},
fieldId = this.fieldId,
internalIds = this.internalIds;
if (fieldTypes) {
for (field in raw) {
if (raw.hasOwnProperty(field)) {
value = raw[field];
// output all fields, except internal ids
if ((field != fieldId) || !(value in internalIds)) {
casted[field] = util.cast(value, fieldTypes[field]);
}
}
}
}
else {
// no field types specified, no casting needed
for (field in raw) {
if (raw.hasOwnProperty(field)) {
value = raw[field];
// output all fields, except internal ids
if ((field != fieldId) || !(value in internalIds)) {
casted[field] = value;
}
}
}
}
return casted;
};
/**
* 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 type = this.fieldTypes[field]; // type may be undefined
d[field] = util.cast(item[field], type);
}
}
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);
}
/**
* 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.<String, String>} [fieldTypes]
* {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";
return;
}
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.width) &&
(a.left + a.width + 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 = 0; // Number
this.end = 0; // Number
this.options = {
min: null,
max: null,
zoomMin: null,
zoomMax: null
};
this.listeners = [];
this.setOptions(options);
}
/**
* Set options for the range controller
* @param {Object} options Available options:
* {Number} start Set start value of the range
* {Number} end Set end value of the range
* {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);
if (options.start != null || options.end != null) {
this.setRange(options.start, options.end);
}
};
/**
* 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;
var listener;
if (direction != 'horizontal' && direction != 'vertical') {
throw new TypeError('Unknown direction "' + direction + '". ' +
'Choose "horizontal" or "vertical".');
}
//noinspection FallthroughInSwitchStatementJS
if (event == 'move') {
listener = {
component: component,
event: event,
direction: direction,
callback: function (event) {
me._onMouseDown(event, listener);
},
params: {}
};
component.on('mousedown', listener.callback);
me.listeners.push(listener);
}
else if (event == 'zoom') {
listener = {
component: component,
event: event,
direction: direction,
callback: function (event) {
me._onMouseWheel(event, listener);
},
params: {}
};
component.on('mousewheel', listener.callback);
me.listeners.push(listener);
}
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.cast(start, 'Number') : this.start;
var newEnd = (end != null) ? util.cast(end, 'Number') : this.end;
var diff;
// check for valid number
if (isNaN(newStart)) {
throw new Error('Invalid start "' + start + '"');
}
if (isNaN(newEnd)) {
throw new Error('Invalid end "' + end + '"');
}
// prevent start < end
if (newEnd < newStart) {
newEnd = newStart;
}
// prevent start < min
if (this.options.min != null) {
var min = this.options.min.valueOf();
if (newStart < min) {
diff = (min - newStart);
newStart += diff;
newEnd += diff;
}
}
// prevent end > max
if (this.options.max != null) {
var max = this.options.max.valueOf();
if (newEnd > max) {
diff = (newEnd - max);
newStart -= diff;
newEnd -= diff;
}
}
// prevent (end-start) > zoomMin
if (this.options.zoomMin != null) {
var zoomMin = this.options.zoomMin.valueOf();
if (zoomMin < 0) {
zoomMin = 0;
}
if ((newEnd - newStart) < zoomMin) {
if ((this.end - this.start) > zoomMin) {
// zoom to the minimum
diff = (zoomMin - (newEnd - newStart));
newStart -= diff / 2;
newEnd += diff / 2;
}
else {
// ingore this action, we are already zoomed to the minimum
newStart = this.start;
newEnd = this.end;
}
}
}
// prevent (end-start) > zoomMin
if (this.options.zoomMax != null) {
var zoomMax = this.options.zoomMax.valueOf();
if (zoomMax < 0) {
zoomMax = 0;
}
if ((newEnd - newStart) > zoomMax) {
if ((this.end - this.start) < zoomMax) {
// zoom to the maximum
diff = ((newEnd - newStart) - zoomMax);
newStart += diff / 2;
newEnd -= diff / 2;
}
else {
// ingore this action, we are already zoomed to the maximum
newStart = this.start;
newEnd = this.end;
}
}
}
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 factor for current range, based on
* the provided width
* @param {Number} width
* @returns {{offset: number, factor: number}} conversion
*/
Range.prototype.conversion = function (width) {
var start = this.start;
var end = this.end;
return Range.conversion(this.start, this.end, width);
};
/**
* Static method to calculate the conversion offset and factor for a range,
* based on the provided start, end, and width
* @param {Number} start
* @param {Number} end
* @param {Number} width
* @returns {{offset: number, factor: number}} conversion
*/
Range.conversion = function (start, end, width) {
if (width != 0 && (end - start != 0)) {
return {
offset: start,
factor: width / (end - start)
}
}
else {
return {
offset: 0,
factor: 1
};
}
};
/**
* Start moving horizontally or vertically
* @param {Event} event
* @param {Object} listener Listener containing the component and params
* @private
*/
Range.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.mouseY = util.getPageY(event);
params.previousLeft = 0;
params.previousOffset = 0;
params.moved = false;
params.start = this.start;
params.end = this.end;
var frame = listener.component.frame;
if (frame) {
frame.style.cursor = 'move';
}
// add event listeners to handle moving the contents
// we store the function onmousemove and onmouseup in the timeaxis,
// so we can remove the eventlisteners lateron in the function onmouseup
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.preventDefault(event);
};
/**
* Perform moving operating.
* This function activated from within the funcion TimeAxis._onMouseDown().
* @param {Event} event
* @param {Object} listener
* @private
*/
Range.prototype._onMouseMove = function (event, listener) {
event = event || window.event;
var params = listener.params;
// calculate change in mouse position
var mouseX = util.getPageX(event);
var mouseY = util.getPageY(event);
if (params.mouseX == undefined) {
params.mouseX = mouseX;
}
if (params.mouseY == undefined) {
params.mouseY = mouseY;
}
var diffX = mouseX - params.mouseX;
var diffY = mouseY - params.mouseY;
var diff = (listener.direction == 'horizontal') ? diffX : diffY;
// if mouse movement is big enough, register it as a "moved" event
if (Math.abs(diff) >= 1) {
params.moved = true;
}
var interval = (params.end - params.start);
var width = (listener.direction == 'horizontal') ?
listener.component.width : listener.component.height;
var diffRange = -diff / width * interval;
this._applyRange(params.start + diffRange, params.end + diffRange);
// fire a rangechange event
this._trigger('rangechange');
util.preventDefault(event);
};
/**
* Stop moving operating.
* This function activated from within the function Range._onMouseDown().
* @param {event} event
* @param {Object} listener
* @private
*/
Range.prototype._onMouseUp = function (event, listener) {
event = event || window.event;
var params = listener.params;
if (listener.component.frame) {
listener.component.frame.style.cursor = 'auto';
}
// 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;
}
//util.preventDefault(event);
if (params.moved) {
// 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 {Object} listener
* @private
*/
Range.prototype._onMouseWheel = function(event, listener) {
event = event || window.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) {
var me = this;
var zoom = function () {
// perform the zoom action. Delta is normally 1 or -1
var zoomFactor = delta / 5.0;
var zoomAround = null;
var frame = listener.component.frame;
if (frame) {
var size, conversion;
if (listener.direction == 'horizontal') {
size = listener.component.width;
conversion = me.conversion(size);
var frameLeft = util.getAbsoluteLeft(frame);
var mouseX = util.getPageX(event);
zoomAround = (mouseX - frameLeft) / conversion.factor + conversion.offset;
}
else {
size = listener.component.height;
conversion = me.conversion(size);
var frameTop = util.getAbsoluteTop(frame);
var mouseY = util.getPageY(event);
zoomAround = ((frameTop + size - mouseY) - frameTop) / conversion.factor + conversion.offset;
}
}
me.zoom(zoomFactor, zoomAround);
};
zoom();
}
// Prevent default actions caused by mouse wheel.
// That might be ugly, but we handle scrolls somehow
// anyway, so don't bother here...
util.preventDefault(event);
};
/**
* Zoom the range the given zoomfactor 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 zoomfactor = 0.1 or -0.1
* @param {Number} zoomFactor Zooming amount. Positive value will zoom in,
* negative value will zoom out
* @param {Number} zoomAround Value around which will be zoomed. Optional
*/
Range.prototype.zoom = function(zoomFactor, zoomAround) {
// if zoomAroundDate is not provided, take it half between start Date and end Date
if (zoomAround == null) {
zoomAround = (this.start + this.end) / 2;
}
// prevent zoom factor larger than 1 or smaller than -1 (larger than 1 will
// result in a start>=end )
if (zoomFactor >= 1) {
zoomFactor = 0.9;
}
if (zoomFactor <= -1) {
zoomFactor = -0.9;
}
// adjust a negative factor such that zooming in with 0.1 equals zooming
// out with a factor -0.1
if (zoomFactor < 0) {
zoomFactor = zoomFactor / (1 + zoomFactor);
}
// zoom start and end relative to the zoomAround value
var startDiff = (this.start - zoomAround);
var endDiff = (this.end - zoomAround);
// calculate new start and end
var newStart = this.start - startDiff * zoomFactor;
var newEnd = this.end - endDiff * zoomFactor;
this.setRange(newStart, newEnd);
};
/**
* Move the range with a given factor to the left or right. Start and end
* value will be adjusted. For example, try moveFactor = 0.1 or -0.1
* @param {Number} moveFactor Moving amount. Positive value will move right,
* negative value will move left
*/
Range.prototype.move = function(moveFactor) {
// zoom start Date and end Date relative to the zoomAroundDate
var diff = (this.end - this.start);
// apply new values
var newStart = this.start + diff * moveFactor;
var newEnd = this.end + diff * moveFactor;
// TODO: reckon with min and max range
this.start = newStart;
this.end = 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');
frame.className = 'vis timeline rootpanel';
var className = options.className;
if (className) {
util.addClassName(frame, util.option.asString(className));
}
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;
}
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;
util.addEventListener(frame, 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.factor + 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.factor;
};
/**
* 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 ' + orientation;
// 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 && axis.parentElement) {
frame.removeChild(axis.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.cast(range.start, 'Date'),
end = util.cast(range.end, 'Date'),
minimumStep = this.toTime((props.minorCharWidth || 10) * 5) - this.toTime(0);
this.step = new TimeStep(start, end, minimumStep);
changed += update(props.range, 'start', start.valueOf());
changed += update(props.range, 'end', end.valueOf());
changed += update(props.range, 'minimumStep', minimumStep.valueOf());
}
return (changed > 0);
};
/**
* Calculate the factor 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);
}
};
/**
* 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,
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 = {
fields: [(itemsData && itemsData.fieldId || 'id'), 'start', 'end', 'content', 'type']
};
// TODO: copy options from the itemset itself?
// 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 factor 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.factor + 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.factor;
};
/**
* @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;
};
/**
* @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');
}
var foreground = this.parent.getForeground();
if (!foreground) {
throw new Error('Cannot repaint time axis: ' +
'parent has no foreground container element');
}
var background = this.parent.getBackground();
if (!background) {
throw new Error('Cannot repaint time axis: ' +
'parent has no background container element');
}
var axis = this.parent.getAxis();
if (!background) {
throw new Error('Cannot repaint time axis: ' +
'parent has no axis container element');
}
if (!dom.box.parentNode) {
foreground.appendChild(dom.box);
changed = true;
}
if (!dom.line.parentNode) {
background.appendChild(dom.line);
changed = true;
}
if (!dom.dot.parentNode) {
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 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.itemsData = null; // DataSet
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({
fieldTypes: {
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;
// 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';
//frame.appendChild(labels);
this.dom.labels = labels;
}
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(labels.style, 'top', asSize(options.top, '0px'));
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);
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.groupsOrder
});
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 (labels.firstChild) {
labels.removeChild(labels.firstChild);
}
for (i = 0; i < orderedGroups.length; i++) {
id = orderedGroups[i];
label = this._createLabel(id);
labels.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;
this.options = util.extend({
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,
autoResize: false
}, options);
// 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 () {
if (me.options.height) {
// fixed height
return me.options.height;
}
else {
// auto height
return me.timeaxis.height + me.content.height;
}
};
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 now = moment().hours(0).minutes(0).seconds(0).milliseconds(0);
this.range = new Range({
start: now.clone().add('days', -3).valueOf(),
end: 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);
// create itemset or groupset
this.setGroups(null);
this.itemsData = null; // DataSet
this.groupsData = null; // DataSet
// set data
if (items) {
this.setItems(items);
}
}
/**
* Set options
* @param {Object} options TODO: describe the available options
*/
Timeline.prototype.setOptions = function (options) {
if (options) {
util.extend(this.options, options);
}
this.controller.reflow();
this.controller.repaint();
};
/**
* 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({
fieldTypes: {
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% on both sides
var min = dataRange.min;
var max = dataRange.max;
if (min != null && max != null) {
var interval = (max.valueOf() - min.valueOf());
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 = new Date(this.options.start.valueOf());
}
if (this.options.end != undefined) {
max = new Date(this.options.end.valueOf());
}
// 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) {
return me.itemPanel.height - me.timeaxis.height;
}
else {
return null;
}
},
maxHeight: function () {
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; // cast to boolean
}
else if (token == 'true') {
token = true; // cast to boolean
}
else if (!isNaN(Number(token))) {
token = Number(token); // cast 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) {
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 factor = (this.widthMax - this.widthMin) / (max - min);
this.width = (this.value - min) * factor + 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);
}
// create event listeners
var me = this;
var onmousedown = function (event) {me._onMouseDown(event);};
var onmousemove = function (event) {me._onMouseMoveTitle(event);};
var onmousewheel = function (event) {me._onMouseWheel(event);};
var ontouchstart = function (event) {me._onTouchStart(event);};
vis.util.addEventListener(this.frame.canvas, "mousedown", onmousedown);
vis.util.addEventListener(this.frame.canvas, "mousemove", onmousemove);
vis.util.addEventListener(this.frame.canvas, "mousewheel", onmousewheel);
vis.util.addEventListener(this.frame.canvas, "touchstart", ontouchstart);
// add the frame to the container element
this.containerElement.appendChild(this.frame);
};
/**
* handle on mouse down event
* @private
*/
Graph.prototype._onMouseDown = function (event) {
event = event || window.event;
if (!this.selectable) {
return;
}
// check if mouse is still down (may be up when focus is lost for example
// in an iframe)
if (this.leftButtonDown) {
this._onMouseUp(event);
}
// only react on left mouse button down
this.leftButtonDown = event.which ? (event.which == 1) : (event.button == 1);
if (!this.leftButtonDown && !this.touchDown) {
return;
}
// add event listeners to handle moving the contents
// we store the function onmousemove and onmouseup in the timeline, so we can
// remove the eventlisteners lateron in the function mouseUp()
var me = this;
if (!this.onmousemove) {
this.onmousemove = function (event) {me._onMouseMove(event);};
vis.util.addEventListener(document, "mousemove", me.onmousemove);
}
if (!this.onmouseup) {
this.onmouseup = function (event) {me._onMouseUp(event);};
vis.util.addEventListener(document, "mouseup", me.onmouseup);
}
vis.util.preventDefault(event);
// store the start x and y position of the mouse
this.startMouseX = event.clientX || event.targetTouches[0].clientX;
this.startMouseY = event.clientY || event.targetTouches[0].clientY;
this.startFrameLeft = vis.util.getAbsoluteLeft(this.frame.canvas);
this.startFrameTop = vis.util.getAbsoluteTop(this.frame.canvas);
this.startTranslation = this._getTranslation();
this.ctrlKeyDown = event.ctrlKey;
this.shiftKeyDown = event.shiftKey;
var obj = {
left: this._xToCanvas(this.startMouseX - this.startFrameLeft),
top: this._yToCanvas(this.startMouseY - this.startFrameTop),
right: this._xToCanvas(this.startMouseX - this.startFrameLeft),
bottom: this._yToCanvas(this.startMouseY - this.startFrameTop)
};
var overlappingNodes = this._getNodesOverlappingWith(obj);
// if there are overlapping nodes, select the last one, this is the
// one which is drawn on top of the others
this.startClickedObj = (overlappingNodes.length > 0) ?
overlappingNodes[overlappingNodes.length - 1] : undefined;
if (this.startClickedObj) {
// move clicked node with the mouse
// make the clicked node temporarily fixed, and store their original state
var node = this.nodes[this.startClickedObj];
this.startClickedObj.xFixed = node.xFixed;
this.startClickedObj.yFixed = node.yFixed;
node.xFixed = true;
node.yFixed = true;
if (!this.ctrlKeyDown || !node.isSelected()) {
// select this node
this._selectNodes([this.startClickedObj], this.ctrlKeyDown);
}
else {
// unselect this node
this._unselectNodes([this.startClickedObj]);
}
if (!this.moving) {
this._redraw();
}
}
else if (this.shiftKeyDown) {
// start selection of multiple nodes
}
else {
// start moving the graph
this.moved = false;
}
};
/**
* handle on mouse move event
* @param {Event} event
* @private
*/
Graph.prototype._onMouseMove = function (event) {
event = event || window.event;
if (!this.selectable) {
return;
}
var mouseX = event.clientX || (event.targetTouches && event.targetTouches[0].clientX) || 0;
var mouseY = event.clientY || (event.targetTouches && event.targetTouches[0].clientY) || 0;
this.mouseX = mouseX;
this.mouseY = mouseY;
if (this.startClickedObj) {
var node = this.nodes[this.startClickedObj];
if (!this.startClickedObj.xFixed)
node.x = this._xToCanvas(mouseX - this.startFrameLeft);
if (!this.startClickedObj.yFixed)
node.y = this._yToCanvas(mouseY - this.startFrameTop);
// start animation if not yet running
if (!this.moving) {
this.moving = true;
this.start();
}
}
else if (this.shiftKeyDown) {
// draw a rect from start mouse location to current mouse location
if (this.frame.selRect == undefined) {
this.frame.selRect = document.createElement("DIV");
this.frame.appendChild(this.frame.selRect);
this.frame.selRect.style.position = "absolute";
this.frame.selRect.style.border = "1px dashed red";
}
var left = Math.min(this.startMouseX, mouseX) - this.startFrameLeft;
var top = Math.min(this.startMouseY, mouseY) - this.startFrameTop;
var right = Math.max(this.startMouseX, mouseX) - this.startFrameLeft;
var bottom = Math.max(this.startMouseY, mouseY) - this.startFrameTop;
this.frame.selRect.style.left = left + "px";
this.frame.selRect.style.top = top + "px";
this.frame.selRect.style.width = (right - left) + "px";
this.frame.selRect.style.height = (bottom - top) + "px";
}
else {
// move the graph
var diffX = mouseX - this.startMouseX;
var diffY = mouseY - this.startMouseY;
this._setTranslation(
this.startTranslation.x + diffX,
this.startTranslation.y + diffY);
this._redraw();
this.moved = true;
}
vis.util.preventDefault(event);
};
/**
* handle on mouse up event
* @param {Event} event
* @private
*/
Graph.prototype._onMouseUp = function (event) {
event = event || window.event;
if (!this.selectable) {
return;
}
// remove event listeners here, important for Safari
if (this.onmousemove) {
vis.util.removeEventListener(document, "mousemove", this.onmousemove);
this.onmousemove = undefined;
}
if (this.onmouseup) {
vis.util.removeEventListener(document, "mouseup", this.onmouseup);
this.onmouseup = undefined;
}
vis.util.preventDefault(event);
// check selected nodes
var endMouseX = event.clientX || this.mouseX || 0;
var endMouseY = event.clientY || this.mouseY || 0;
var ctrlKey = event ? event.ctrlKey : window.event.ctrlKey;
if (this.startClickedObj) {
// restore the original fixed state
var node = this.nodes[this.startClickedObj];
node.xFixed = this.startClickedObj.xFixed;
node.yFixed = this.startClickedObj.yFixed;
}
else if (this.shiftKeyDown) {
// select nodes inside selection area
var obj = {
"left": this._xToCanvas(Math.min(this.startMouseX, endMouseX) - this.startFrameLeft),
"top": this._yToCanvas(Math.min(this.startMouseY, endMouseY) - this.startFrameTop),
"right": this._xToCanvas(Math.max(this.startMouseX, endMouseX) - this.startFrameLeft),
"bottom": this._yToCanvas(Math.max(this.startMouseY, endMouseY) - this.startFrameTop)
};
var overlappingNodes = this._getNodesOverlappingWith(obj);
this._selectNodes(overlappingNodes, ctrlKey);
this.redraw();
// remove the selection rectangle
if (this.frame.selRect) {
this.frame.removeChild(this.frame.selRect);
this.frame.selRect = undefined;
}
}
else {
if (!this.ctrlKeyDown && !this.moved) {
// remove selection
this._unselectNodes();
this._redraw();
}
}
this.leftButtonDown = false;
this.ctrlKeyDown = false;
};
/**
* Event handler for mouse wheel event, used to zoom the timeline
* Code from http://adomas.org/javascript-mouse-wheel/
* @param {Event} event
* @private
*/
Graph.prototype._onMouseWheel = function(event) {
event = event || window.event;
var mouseX = event.clientX;
var mouseY = event.clientY;
// 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) {
// determine zoom factor, and adjust the zoom factor such that zooming in
// and zooming out correspond wich each other
var zoom = delta / 10;
if (delta < 0) {
zoom = zoom / (1 - zoom);
}
var scaleOld = this._getScale();
var scaleNew = scaleOld * (1 + zoom);
if (scaleNew < 0.01) {
scaleNew = 0.01;
}
if (scaleNew > 10) {
scaleNew = 10;
}
var frameLeft = vis.util.getAbsoluteLeft(this.frame.canvas);
var frameTop = vis.util.getAbsoluteTop(this.frame.canvas);
var x = mouseX - frameLeft;
var y = mouseY - frameTop;
var translation = this._getTranslation();
var scaleFrac = scaleNew / scaleOld;
var tx = (1 - scaleFrac) * x + translation.x * scaleFrac;
var ty = (1 - scaleFrac) * y + translation.y * scaleFrac;
this._setScale(scaleNew);
this._setTranslation(tx, ty);
this._redraw();
}
// Prevent default actions caused by mouse wheel.
// That might be ugly, but we handle scrolls somehow
// anyway, so don't bother here...
vis.util.preventDefault(event);
};
/**
* Mouse move handler for checking whether the title moves over a node with a title.
* @param {Event} event
* @private
*/
Graph.prototype._onMouseMoveTitle = function (event) {
event = event || window.event;
var startMouseX = event.clientX;
var startMouseY = event.clientY;
this.startFrameLeft = this.startFrameLeft || vis.util.getAbsoluteLeft(this.frame.canvas);
this.startFrameTop = this.startFrameTop || vis.util.getAbsoluteTop(this.frame.canvas);
var x = startMouseX - this.startFrameLeft;
var y = startMouseY - this.startFrameTop;
// check if the previously selected node is still selected
if (this.popupNode) {
this._checkHidePopup(x, y);
}
// start a timeout that will check if the mouse is positioned above
// an element
var me = this;
var checkShow = function() {
me._checkShowPopup(x, y);
};
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 {number} x
* @param {number} y
* @private
*/
Graph.prototype._checkShowPopup = function (x, y) {
var obj = {
"left" : this._xToCanvas(x),
"top" : this._yToCanvas(y),
"right" : this._xToCanvas(x),
"bottom" : this._yToCanvas(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(x - 3, 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 {number} x
* @param {number} y
* @private
*/
Graph.prototype._checkHidePopup = function (x, y) {
var obj = {
"left" : x,
"top" : y,
"right" : x,
"bottom" : y
};
if (!this.popupNode || !this.popupNode.isOverlappingWith(obj) ) {
this.popupNode = undefined;
if (this.popup) {
this.popup.hide();
}
}
};
/**
* Event handler for touchstart event on mobile devices
* @param {Event} event
* @private
*/
Graph.prototype._onTouchStart = function(event) {
vis.util.preventDefault(event);
if (this.touchDown) {
// if already moving, return
return;
}
this.touchDown = true;
var me = this;
if (!this.ontouchmove) {
this.ontouchmove = function (event) {me._onTouchMove(event);};
vis.util.addEventListener(document, "touchmove", this.ontouchmove);
}
if (!this.ontouchend) {
this.ontouchend = function (event) {me._onTouchEnd(event);};
vis.util.addEventListener(document, "touchend", this.ontouchend);
}
this._onMouseDown(event);
};
/**
* Event handler for touchmove event on mobile devices
* @param {Event} event
* @private
*/
Graph.prototype._onTouchMove = function(event) {
vis.util.preventDefault(event);
this._onMouseMove(event);
};
/**
* Event handler for touchend event on mobile devices
* @param {Event} event
* @private
*/
Graph.prototype._onTouchEnd = function(event) {
vis.util.preventDefault(event);
this.touchDown = false;
if (this.ontouchmove) {
vis.util.removeEventListener(document, "touchmove", this.ontouchmove);
this.ontouchmove = undefined;
}
if (this.ontouchend) {
vis.util.removeEventListener(document, "touchend", this.ontouchend);
this.ontouchend = undefined;
}
this._onMouseUp(event);
};
/**
* 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 {Object[]} An array with selection objects containing
* the parameter row.
* @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.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;
};
Graph.prototype._xToCanvas = function(x) {
return (x - this.translation.x) / this.scale;
};
Graph.prototype._canvasToX = function(x) {
return x * this.scale + this.translation.x;
};
Graph.prototype._yToCanvas = function(y) {
return (y - this.translation.y) / this.scale;
};
Graph.prototype._canvasToY = 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 {\n}\n\n\n.vis.timeline.rootpanel {\n position: relative;\n overflow: hidden;\n\n border: 1px solid #bfbfbf;\n -moz-box-sizing: border-box;\n box-sizing: border-box;\n}\n\n.vis.timeline .panel {\n position: absolute;\n overflow: hidden;\n}\n\n\n.vis.timeline .groupset {\n position: absolute;\n padding: 0;\n margin: 0;\n}\n\n.vis.timeline .labels {\n position: absolute;\n top: 0;\n left: 0;\n width: 100%;\n height: 100%;\n\n padding: 0;\n margin: 0;\n\n border-right: 1px solid #bfbfbf;\n box-sizing: border-box;\n -moz-box-sizing: border-box;\n}\n\n.vis.timeline .labels .label {\n position: absolute;\n left: 0;\n top: 0;\n width: 100%;\n border-bottom: 1px solid #bfbfbf;\n color: #4d4d4d;\n}\n\n.vis.timeline .labels .label .inner {\n display: inline-block;\n padding: 5px;\n}\n\n\n.vis.timeline .itemset {\n position: absolute;\n padding: 0;\n margin: 0;\n overflow: hidden;\n}\n\n.vis.timeline .background {\n}\n\n.vis.timeline .foreground {\n}\n\n.vis.timeline .itemset-axis {\n position: absolute;\n}\n\n.vis.timeline .groupset .itemset-axis {\n border-top: 1px solid #bfbfbf;\n}\n\n/* TODO: with orientation=='bottom', this will more or less overlap with timeline axis\n.vis.timeline .groupset .itemset-axis:last-child {\n border-top: none;\n}\n*/\n\n\n.vis.timeline .item {\n position: absolute;\n color: #1A1A1A;\n border-color: #97B0F8;\n background-color: #D5DDF6;\n display: inline-block;\n}\n\n.vis.timeline .item.selected {\n border-color: #FFC200;\n background-color: #FFF785;\n z-index: 999;\n}\n\n.vis.timeline .item.cluster {\n /* TODO: use another color or pattern? */\n background: #97B0F8 url('img/cluster_bg.png');\n color: white;\n}\n.vis.timeline .item.cluster.point {\n border-color: #D5DDF6;\n}\n\n.vis.timeline .item.box {\n text-align: center;\n border-style: solid;\n border-width: 1px;\n border-radius: 5px;\n -moz-border-radius: 5px; /* For Firefox 3.6 and older */\n}\n\n.vis.timeline .item.point {\n background: none;\n}\n\n.vis.timeline .dot {\n border: 5px solid #97B0F8;\n position: absolute;\n border-radius: 5px;\n -moz-border-radius: 5px; /* For Firefox 3.6 and older */\n}\n\n.vis.timeline .item.range {\n overflow: hidden;\n border-style: solid;\n border-width: 1px;\n border-radius: 2px;\n -moz-border-radius: 2px; /* For Firefox 3.6 and older */\n}\n\n.vis.timeline .item.range .drag-left {\n cursor: w-resize;\n z-index: 1000;\n}\n\n.vis.timeline .item.range .drag-right {\n cursor: e-resize;\n z-index: 1000;\n}\n\n.vis.timeline .item.range .content {\n position: relative;\n display: inline-block;\n}\n\n.vis.timeline .item.line {\n position: absolute;\n width: 0;\n border-left-width: 1px;\n border-left-style: solid;\n}\n\n.vis.timeline .item .content {\n margin: 5px;\n white-space: nowrap;\n overflow: hidden;\n}\n\n.vis.timeline .axis {\n position: relative;\n}\n\n.vis.timeline .axis .text {\n position: absolute;\n color: #4d4d4d;\n padding: 3px;\n white-space: nowrap;\n}\n\n.vis.timeline .axis .text.measure {\n position: absolute;\n padding-left: 0;\n padding-right: 0;\n margin-left: 0;\n margin-right: 0;\n visibility: hidden;\n}\n\n.vis.timeline .axis .grid.vertical {\n position: absolute;\n width: 0;\n border-right: 1px solid;\n}\n\n.vis.timeline .axis .grid.horizontal {\n position: absolute;\n left: 0;\n width: 100%;\n height: 0;\n border-bottom: 1px solid;\n}\n\n.vis.timeline .axis .grid.minor {\n border-color: #e5e5e5;\n}\n\n.vis.timeline .axis .grid.major {\n border-color: #bfbfbf;\n}\n\n");
})()
},{"moment":2}],2:[function(require,module,exports){
(function(){// moment.js
// version : 2.0.0
// author : Tim Wood
// license : MIT
// momentjs.com
(function (undefined) {
/************************************
Constants
************************************/
var moment,
VERSION = "2.0.0",
round = Math.round, i,
// internal storage for language config files
languages = {},
// check for nodeJS
hasModule = (typeof module !== 'undefined' && module.exports),
// ASP.NET json date format regex
aspNetJsonRegex = /^\/?Date\((\-?\d+)/i,
// format tokens
formattingTokens = /(\[[^\[]*\])|(\\)?(Mo|MM?M?M?|Do|DDDo|DD?D?D?|ddd?d?|do?|w[o|w]?|W[o|W]?|YYYYY|YYYY|YY|a|A|hh?|HH?|mm?|ss?|SS?S?|X|zz?|ZZ?|.)/g,
localFormattingTokens = /(\[[^\[]*\])|(\\)?(LT|LL?L?L?|l{1,4})/g,
// parsing tokens
parseMultipleFormatChunker = /([0-9a-zA-Z\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+)/gi,
// parsing token regexes
parseTokenOneOrTwoDigits = /\d\d?/, // 0 - 99
parseTokenOneToThreeDigits = /\d{1,3}/, // 0 - 999
parseTokenThreeDigits = /\d{3}/, // 000 - 999
parseTokenFourDigits = /\d{1,4}/, // 0 - 9999
parseTokenSixDigits = /[+\-]?\d{1,6}/, // -999,999 - 999,999
parseTokenWord = /[0-9]*[a-z\u00A0-\u05FF\u0700-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+|[\u0600-\u06FF]+\s*?[\u0600-\u06FF]+/i, // any word (or two) characters or numbers including two word month in arabic.
parseTokenTimezone = /Z|[\+\-]\d\d:?\d\d/i, // +00:00 -00:00 +0000 -0000 or Z
parseTokenT = /T/i, // T (ISO seperator)
parseTokenTimestampMs = /[\+\-]?\d+(\.\d{1,3})?/, // 123456789 123456789.123
// preliminary iso regex
// 0000-00-00 + T + 00 or 00:00 or 00:00:00 or 00:00:00.000 + +00:00 or +0000
isoRegex = /^\s*\d{4}-\d\d-\d\d((T| )(\d\d(:\d\d(:\d\d(\.\d\d?\d?)?)?)?)?([\+\-]\d\d:?\d\d)?)?/,
isoFormat = 'YYYY-MM-DDTHH:mm:ssZ',
// iso time formats and regexes
isoTimes = [
['HH:mm:ss.S', /(T| )\d\d:\d\d:\d\d\.\d{1,3}/],
['HH:mm:ss', /(T| )\d\d:\d\d:\d\d/],
['HH:mm', /(T| )\d\d:\d\d/],
['HH', /(T| )\d\d/]
],
// timezone chunker "+10:00" > ["10", "00"] or "-1530" > ["-15", "30"]
parseTimezoneChunker = /([\+\-]|\d\d)/gi,
// getter and setter names
proxyGettersAndSetters = 'Month|Date|Hours|Minutes|Seconds|Milliseconds'.split('|'),
unitMillisecondFactors = {
'Milliseconds' : 1,
'Seconds' : 1e3,
'Minutes' : 6e4,
'Hours' : 36e5,
'Days' : 864e5,
'Months' : 2592e6,
'Years' : 31536e6
},
// format function strings
formatFunctions = {},
// tokens to ordinalize and pad
ordinalizeTokens = 'DDD w W M D d'.split(' '),
paddedTokens = 'M D H h m s w W'.split(' '),
formatTokenFunctions = {
M : function () {
return this.month() + 1;
},
MMM : function (format) {
return this.lang().monthsShort(this, format);
},
MMMM : function (format) {
return this.lang().months(this, format);
},
D : function () {
return this.date();
},
DDD : function () {
return this.dayOfYear();
},
d : function () {
return this.day();
},
dd : function (format) {
return this.lang().weekdaysMin(this, format);
},
ddd : function (format) {
return this.lang().weekdaysShort(this, format);
},
dddd : function (format) {
return this.lang().weekdays(this, format);
},
w : function () {
return this.week();
},
W : function () {
return this.isoWeek();
},
YY : function () {
return leftZeroFill(this.year() % 100, 2);
},
YYYY : function () {
return leftZeroFill(this.year(), 4);
},
YYYYY : function () {
return leftZeroFill(this.year(), 5);
},
a : function () {
return this.lang().meridiem(this.hours(), this.minutes(), true);
},
A : function () {
return this.lang().meridiem(this.hours(), this.minutes(), false);
},
H : function () {
return this.hours();
},
h : function () {
return this.hours() % 12 || 12;
},
m : function () {
return this.minutes();
},
s : function () {
return this.seconds();
},
S : function () {
return ~~(this.milliseconds() / 100);
},
SS : function () {
return leftZeroFill(~~(this.milliseconds() / 10), 2);
},
SSS : function () {
return leftZeroFill(this.milliseconds(), 3);
},
Z : function () {
var a = -this.zone(),
b = "+";
if (a < 0) {
a = -a;
b = "-";
}
return b + leftZeroFill(~~(a / 60), 2) + ":" + leftZeroFill(~~a % 60, 2);
},
ZZ : function () {
var a = -this.zone(),
b = "+";
if (a < 0) {
a = -a;
b = "-";
}
return b + leftZeroFill(~~(10 * a / 6), 4);
},
X : function () {
return this.unix();
}
};
function padToken(func, count) {
return function (a) {
return leftZeroFill(func.call(this, a), count);
};
}
function ordinalizeToken(func) {
return function (a) {
return this.lang().ordinal(func.call(this, a));
};
}
while (ordinalizeTokens.length) {
i = ordinalizeTokens.pop();
formatTokenFunctions[i + 'o'] = ordinalizeToken(formatTokenFunctions[i]);
}
while (paddedTokens.length) {
i = paddedTokens.pop();
formatTokenFunctions[i + i] = padToken(formatTokenFunctions[i], 2);
}
formatTokenFunctions.DDDD = padToken(formatTokenFunctions.DDD, 3);
/************************************
Constructors
************************************/
function Language() {
}
// Moment prototype object
function Moment(config) {
extend(this, config);
}
// Duration Constructor
function Duration(duration) {
var data = this._data = {},
years = duration.years || duration.year || duration.y || 0,
months = duration.months || duration.month || duration.M || 0,
weeks = duration.weeks || duration.week || duration.w || 0,
days = duration.days || duration.day || duration.d || 0,
hours = duration.hours || duration.hour || duration.h || 0,
minutes = duration.minutes || duration.minute || duration.m || 0,
seconds = duration.seconds || duration.second || duration.s || 0,
milliseconds = duration.milliseconds || duration.millisecond || duration.ms || 0;
// representation for dateAddRemove
this._milliseconds = milliseconds +
seconds * 1e3 + // 1000
minutes * 6e4 + // 1000 * 60
hours * 36e5; // 1000 * 60 * 60
// Because of dateAddRemove treats 24 hours as different from a
// day when working around DST, we need to store them separately
this._days = days +
weeks * 7;
// It is impossible translate months into days without knowing
// which months you are are talking about, so we have to store
// it separately.
this._months = months +
years * 12;
// The following code bubbles up values, see the tests for
// examples of what that means.
data.milliseconds = milliseconds % 1000;
seconds += absRound(milliseconds / 1000);
data.seconds = seconds % 60;
minutes += absRound(seconds / 60);
data.minutes = minutes % 60;
hours += absRound(minutes / 60);
data.hours = hours % 24;
days += absRound(hours / 24);
days += weeks * 7;
data.days = days % 30;
months += absRound(days / 30);
data.months = months % 12;
years += absRound(months / 12);
data.years = years;
}
/************************************
Helpers
************************************/
function extend(a, b) {
for (var i in b) {
if (b.hasOwnProperty(i)) {
a[i] = b[i];
}
}
return a;
}
function absRound(number) {
if (number < 0) {
return Math.ceil(number);
} else {
return Math.floor(number);
}
}
// left zero fill a number
// see http://jsperf.com/left-zero-filling for performance comparison
function leftZeroFill(number, targetLength) {
var output = number + '';
while (output.length < targetLength) {
output = '0' + output;
}
return output;
}
// helper function for _.addTime and _.subtractTime
function addOrSubtractDurationFromMoment(mom, duration, isAdding) {
var ms = duration._milliseconds,
d = duration._days,
M = duration._months,
currentDate;
if (ms) {
mom._d.setTime(+mom + ms * isAdding);
}
if (d) {
mom.date(mom.date() + d * isAdding);
}
if (M) {
currentDate = mom.date();
mom.date(1)
.month(mom.month() + M * isAdding)
.date(Math.min(currentDate, mom.daysInMonth()));
}
}
// check if is an array
function isArray(input) {
return Object.prototype.toString.call(input) === '[object Array]';
}
// compare two arrays, return the number of differences
function compareArrays(array1, array2) {
var len = Math.min(array1.length, array2.length),
lengthDiff = Math.abs(array1.length - array2.length),
diffs = 0,
i;
for (i = 0; i < len; i++) {
if (~~array1[i] !== ~~array2[i]) {
diffs++;
}
}
return diffs + lengthDiff;
}
/************************************
Languages
************************************/
Language.prototype = {
set : function (config) {
var prop, i;
for (i in config) {
prop = config[i];
if (typeof prop === 'function') {
this[i] = prop;
} else {
this['_' + i] = prop;
}
}
},
_months : "January_February_March_April_May_June_July_August_September_October_November_December".split("_"),
months : function (m) {
return this._months[m.month()];
},
_monthsShort : "Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec".split("_"),
monthsShort : function (m) {
return this._monthsShort[m.month()];
},
monthsParse : function (monthName) {
var i, mom, regex, output;
if (!this._monthsParse) {
this._monthsParse = [];
}
for (i = 0; i < 12; i++) {
// make the regex if we don't have it already
if (!this._monthsParse[i]) {
mom = moment([2000, i]);
regex = '^' + this.months(mom, '') + '|^' + this.monthsShort(mom, '');
this._monthsParse[i] = new RegExp(regex.replace('.', ''), 'i');
}
// test the regex
if (this._monthsParse[i].test(monthName)) {
return i;
}
}
},
_weekdays : "Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday".split("_"),
weekdays : function (m) {
return this._weekdays[m.day()];
},
_weekdaysShort : "Sun_Mon_Tue_Wed_Thu_Fri_Sat".split("_"),
weekdaysShort : function (m) {
return this._weekdaysShort[m.day()];
},
_weekdaysMin : "Su_Mo_Tu_We_Th_Fr_Sa".split("_"),
weekdaysMin : function (m) {
return this._weekdaysMin[m.day()];
},
_longDateFormat : {
LT : "h:mm A",
L : "MM/DD/YYYY",
LL : "MMMM D YYYY",
LLL : "MMMM D YYYY LT",
LLLL : "dddd, MMMM D YYYY LT"
},
longDateFormat : function (key) {
var output = this._longDateFormat[key];
if (!output && this._longDateFormat[key.toUpperCase()]) {
output = this._longDateFormat[key.toUpperCase()].replace(/MMMM|MM|DD|dddd/g, function (val) {
return val.slice(1);
});
this._longDateFormat[key] = output;
}
return output;
},
meridiem : function (hours, minutes, isLower) {
if (hours > 11) {
return isLower ? 'pm' : 'PM';
} else {
return isLower ? 'am' : 'AM';
}
},
_calendar : {
sameDay : '[Today at] LT',
nextDay : '[Tomorrow at] LT',
nextWeek : 'dddd [at] LT',
lastDay : '[Yesterday at] LT',
lastWeek : '[last] dddd [at] LT',
sameElse : 'L'
},
calendar : function (key, mom) {
var output = this._calendar[key];
return typeof output === 'function' ? output.apply(mom) : output;
},
_relativeTime : {
future : "in %s",
past : "%s ago",
s : "a few seconds",
m : "a minute",
mm : "%d minutes",
h : "an hour",
hh : "%d hours",
d : "a day",
dd : "%d days",
M : "a month",
MM : "%d months",
y : "a year",
yy : "%d years"
},
relativeTime : function (number, withoutSuffix, string, isFuture) {
var output = this._relativeTime[string];
return (typeof output === 'function') ?
output(number, withoutSuffix, string, isFuture) :
output.replace(/%d/i, number);
},
pastFuture : function (diff, output) {
var format = this._relativeTime[diff > 0 ? 'future' : 'past'];
return typeof format === 'function' ? format(output) : format.replace(/%s/i, output);
},
ordinal : function (number) {
return this._ordinal.replace("%d", number);
},
_ordinal : "%d",
preparse : function (string) {
return string;
},
postformat : function (string) {
return string;
},
week : function (mom) {
return weekOfYear(mom, this._week.dow, this._week.doy);
},
_week : {
dow : 0, // Sunday is the first day of the week.
doy : 6 // The week that contains Jan 1st is the first week of the year.
}
};
// Loads a language definition into the `languages` cache. The function
// takes a key and optionally values. If not in the browser and no values
// are provided, it will load the language file module. As a convenience,
// this function also returns the language values.
function loadLang(key, values) {
values.abbr = key;
if (!languages[key]) {
languages[key] = new Language();
}
languages[key].set(values);
return languages[key];
}
// Determines which language definition to use and returns it.
//
// With no parameters, it will return the global language. If you
// pass in a language key, such as 'en', it will return the
// definition for 'en', so long as 'en' has already been loaded using
// moment.lang.
function getLangDefinition(key) {
if (!key) {
return moment.fn._lang;
}
if (!languages[key] && hasModule) {
require('./lang/' + key);
}
return languages[key];
}
/************************************
Formatting
************************************/
function removeFormattingTokens(input) {
if (input.match(/\[.*\]/)) {
return input.replace(/^\[|\]$/g, "");
}
return input.replace(/\\/g, "");
}
function makeFormatFunction(format) {
var array = format.match(formattingTokens), i, length;
for (i = 0, length = array.length; i < length; i++) {
if (formatTokenFunctions[array[i]]) {
array[i] = formatTokenFunctions[array[i]];
} else {
array[i] = removeFormattingTokens(array[i]);
}
}
return function (mom) {
var output = "";
for (i = 0; i < length; i++) {
output += typeof array[i].call === 'function' ? array[i].call(mom, format) : array[i];
}
return output;
};
}
// format date using native date object
function formatMoment(m, format) {
var i = 5;
function replaceLongDateFormatTokens(input) {
return m.lang().longDateFormat(input) || input;
}
while (i-- && localFormattingTokens.test(format)) {
format = format.replace(localFormattingTokens, replaceLongDateFormatTokens);
}
if (!formatFunctions[format]) {
formatFunctions[format] = makeFormatFunction(format);
}
return formatFunctions[format](m);
}
/************************************
Parsing
************************************/
// get the regex to find the next token
function getParseRegexForToken(token) {
switch (token) {
case 'DDDD':
return parseTokenThreeDigits;
case 'YYYY':
return parseTokenFourDigits;
case 'YYYYY':
return parseTokenSixDigits;
case 'S':
case 'SS':
case 'SSS':
case 'DDD':
return parseTokenOneToThreeDigits;
case 'MMM':
case 'MMMM':
case 'dd':
case 'ddd':
case 'dddd':
case 'a':
case 'A':
return parseTokenWord;
case 'X':
return parseTokenTimestampMs;
case 'Z':
case 'ZZ':
return parseTokenTimezone;
case 'T':
return parseTokenT;
case 'MM':
case 'DD':
case 'YY':
case 'HH':
case 'hh':
case 'mm':
case 'ss':
case 'M':
case 'D':
case 'd':
case 'H':
case 'h':
case 'm':
case 's':
return parseTokenOneOrTwoDigits;
default :
return new RegExp(token.replace('\\', ''));
}
}
// function to convert string input to date
function addTimeToArrayFromToken(token, input, config) {
var a, b,
datePartArray = config._a;
switch (token) {
// MONTH
case 'M' : // fall through to MM
case 'MM' :
datePartArray[1] = (input == null) ? 0 : ~~input - 1;
break;
case 'MMM' : // fall through to MMMM
case 'MMMM' :
a = getLangDefinition(config._l).monthsParse(input);
// if we didn't find a month name, mark the date as invalid.
if (a != null) {
datePartArray[1] = a;
} else {
config._isValid = false;
}
break;
// DAY OF MONTH
case 'D' : // fall through to DDDD
case 'DD' : // fall through to DDDD
case 'DDD' : // fall through to DDDD
case 'DDDD' :
if (input != null) {
datePartArray[2] = ~~input;
}
break;
// YEAR
case 'YY' :
datePartArray[0] = ~~input + (~~input > 68 ? 1900 : 2000);
break;
case 'YYYY' :
case 'YYYYY' :
datePartArray[0] = ~~input;
break;
// AM / PM
case 'a' : // fall through to A
case 'A' :
config._isPm = ((input + '').toLowerCase() === 'pm');
break;
// 24 HOUR
case 'H' : // fall through to hh
case 'HH' : // fall through to hh
case 'h' : // fall through to hh
case 'hh' :
datePartArray[3] = ~~input;
break;
// MINUTE
case 'm' : // fall through to mm
case 'mm' :
datePartArray[4] = ~~input;
break;
// SECOND
case 's' : // fall through to ss
case 'ss' :
datePartArray[5] = ~~input;
break;
// MILLISECOND
case 'S' :
case 'SS' :
case 'SSS' :
datePartArray[6] = ~~ (('0.' + input) * 1000);
break;
// UNIX TIMESTAMP WITH MS
case 'X':
config._d = new Date(parseFloat(input) * 1000);
break;
// TIMEZONE
case 'Z' : // fall through to ZZ
case 'ZZ' :
config._useUTC = true;
a = (input + '').match(parseTimezoneChunker);
if (a && a[1]) {
config._tzh = ~~a[1];
}
if (a && a[2]) {
config._tzm = ~~a[2];
}
// reverse offsets
if (a && a[0] === '+') {
config._tzh = -config._tzh;
config._tzm = -config._tzm;
}
break;
}
// if the input is null, the date is not valid
if (input == null) {
config._isValid = false;
}
}
// convert an array to a date.
// the array should mirror the parameters below
// note: all values past the year are optional and will default to the lowest possible value.
// [year, month, day , hour, minute, second, millisecond]
function dateFromArray(config) {
var i, date, input = [];
if (config._d) {
return;
}
for (i = 0; i < 7; i++) {
config._a[i] = input[i] = (config._a[i] == null) ? (i === 2 ? 1 : 0) : config._a[i];
}
// add the offsets to the time to be parsed so that we can have a clean array for checking isValid
input[3] += config._tzh || 0;
input[4] += config._tzm || 0;
date = new Date(0);
if (config._useUTC) {
date.setUTCFullYear(input[0], input[1], input[2]);
date.setUTCHours(input[3], input[4], input[5], input[6]);
} else {
date.setFullYear(input[0], input[1], input[2]);
date.setHours(input[3], input[4], input[5], input[6]);
}
config._d = date;
}
// date from string and format string
function makeDateFromStringAndFormat(config) {
// This array is used to make a Date, either with `new Date` or `Date.UTC`
var tokens = config._f.match(formattingTokens),
string = config._i,
i, parsedInput;
config._a = [];
for (i = 0; i < tokens.length; i++) {
parsedInput = (getParseRegexForToken(tokens[i]).exec(string) || [])[0];
if (parsedInput) {
string = string.slice(string.indexOf(parsedInput) + parsedInput.length);
}
// don't parse if its not a known token
if (formatTokenFunctions[tokens[i]]) {
addTimeToArrayFromToken(tokens[i], parsedInput, config);
}
}
// handle am pm
if (config._isPm && config._a[3] < 12) {
config._a[3] += 12;
}
// if is 12 am, change hours to 0
if (config._isPm === false && config._a[3] === 12) {
config._a[3] = 0;
}
// return
dateFromArray(config);
}
// date from string and array of format strings
function makeDateFromStringAndArray(config) {
var tempConfig,
tempMoment,
bestMoment,
scoreToBeat = 99,
i,
currentDate,
currentScore;
while (config._f.length) {
tempConfig = extend({}, config);
tempConfig._f = config._f.pop();
makeDateFromStringAndFormat(tempConfig);
tempMoment = new Moment(tempConfig);
if (tempMoment.isValid()) {
bestMoment = tempMoment;
break;
}
currentScore = compareArrays(tempConfig._a, tempMoment.toArray());
if (currentScore < scoreToBeat) {
scoreToBeat = currentScore;
bestMoment = tempMoment;
}
}
extend(config, bestMoment);
}
// date from iso format
function makeDateFromString(config) {
var i,
string = config._i;
if (isoRegex.exec(string)) {
config._f = 'YYYY-MM-DDT';
for (i = 0; i < 4; i++) {
if (isoTimes[i][1].exec(string)) {
config._f += isoTimes[i][0];
break;
}
}
if (parseTokenTimezone.exec(string)) {
config._f += " Z";
}
makeDateFromStringAndFormat(config);
} else {
config._d = new Date(string);
}
}
function makeDateFromInput(config) {
var input = config._i,
matched = aspNetJsonRegex.exec(input);
if (input === undefined) {
config._d = new Date();
} else if (matched) {
config._d = new Date(+matched[1]);
} else if (typeof input === 'string') {
makeDateFromString(config);
} else if (isArray(input)) {
config._a = input.slice(0);
dateFromArray(config);
} else {
config._d = input instanceof Date ? new Date(+input) : new Date(input);
}
}
/************************************
Relative Time
************************************/
// helper function for moment.fn.from, moment.fn.fromNow, and moment.duration.fn.humanize
function substituteTimeAgo(string, number, withoutSuffix, isFuture, lang) {
return lang.relativeTime(number || 1, !!withoutSuffix, string, isFuture);
}
function relativeTime(milliseconds, withoutSuffix, lang) {
var seconds = round(Math.abs(milliseconds) / 1000),
minutes = round(seconds / 60),
hours = round(minutes / 60),
days = round(hours / 24),
years = round(days / 365),
args = seconds < 45 && ['s', seconds] ||
minutes === 1 && ['m'] ||
minutes < 45 && ['mm', minutes] ||
hours === 1 && ['h'] ||
hours < 22 && ['hh', hours] ||
days === 1 && ['d'] ||
days <= 25 && ['dd', days] ||
days <= 45 && ['M'] ||
days < 345 && ['MM', round(days / 30)] ||
years === 1 && ['y'] || ['yy', years];
args[2] = withoutSuffix;
args[3] = milliseconds > 0;
args[4] = lang;
return substituteTimeAgo.apply({}, args);
}
/************************************
Week of Year
************************************/
// firstDayOfWeek 0 = sun, 6 = sat
// the day of the week that starts the week
// (usually sunday or monday)
// firstDayOfWeekOfYear 0 = sun, 6 = sat
// the first week is the week that contains the first
// of this day of the week
// (eg. ISO weeks use thursday (4))
function weekOfYear(mom, firstDayOfWeek, firstDayOfWeekOfYear) {
var end = firstDayOfWeekOfYear - firstDayOfWeek,
daysToDayOfWeek = firstDayOfWeekOfYear - mom.day();
if (daysToDayOfWeek > end) {
daysToDayOfWeek -= 7;
}
if (daysToDayOfWeek < end - 7) {
daysToDayOfWeek += 7;
}
return Math.ceil(moment(mom).add('d', daysToDayOfWeek).dayOfYear() / 7);
}
/************************************
Top Level Functions
************************************/
function makeMoment(config) {
var input = config._i,
format = config._f;
if (input === null || input === '') {
return null;
}
if (typeof input === 'string') {
config._i = input = getLangDefinition().preparse(input);
}
if (moment.isMoment(input)) {
config = extend({}, input);
config._d = new Date(+input._d);
} else if (format) {
if (isArray(format)) {
makeDateFromStringAndArray(config);
} else {
makeDateFromStringAndFormat(config);
}
} else {
makeDateFromInput(config);
}
return new Moment(config);
}
moment = function (input, format, lang) {
return makeMoment({
_i : input,
_f : format,
_l : lang,
_isUTC : false
});
};
// creating with utc
moment.utc = function (input, format, lang) {
return makeMoment({
_useUTC : true,
_isUTC : true,
_l : lang,
_i : input,
_f : format
});
};
// creating with unix timestamp (in seconds)
moment.unix = function (input) {
return moment(input * 1000);
};
// duration
moment.duration = function (input, key) {
var isDuration = moment.isDuration(input),
isNumber = (typeof input === 'number'),
duration = (isDuration ? input._data : (isNumber ? {} : input)),
ret;
if (isNumber) {
if (key) {
duration[key] = input;
} else {
duration.milliseconds = input;
}
}
ret = new Duration(duration);
if (isDuration && input.hasOwnProperty('_lang')) {
ret._lang = input._lang;
}
return ret;
};
// version number
moment.version = VERSION;
// default format
moment.defaultFormat = isoFormat;
// This function will load languages and then set the global language. If
// no arguments are passed in, it will simply return the current global
// language key.
moment.lang = function (key, values) {
var i;
if (!key) {
return moment.fn._lang._abbr;
}
if (values) {
loadLang(key, values);
} else if (!languages[key]) {
getLangDefinition(key);
}
moment.duration.fn._lang = moment.fn._lang = getLangDefinition(key);
};
// returns language data
moment.langData = function (key) {
if (key && key._lang && key._lang._abbr) {
key = key._lang._abbr;
}
return getLangDefinition(key);
};
// compare moment object
moment.isMoment = function (obj) {
return obj instanceof Moment;
};
// for typechecking Duration objects
moment.isDuration = function (obj) {
return obj instanceof Duration;
};
/************************************
Moment Prototype
************************************/
moment.fn = Moment.prototype = {
clone : function () {
return moment(this);
},
valueOf : function () {
return +this._d;
},
unix : function () {
return Math.floor(+this._d / 1000);
},
toString : function () {
return this.format("ddd MMM DD YYYY HH:mm:ss [GMT]ZZ");
},
toDate : function () {
return this._d;
},
toJSON : function () {
return moment.utc(this).format('YYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
},
toArray : function () {
var m = this;
return [
m.year(),
m.month(),
m.date(),
m.hours(),
m.minutes(),
m.seconds(),
m.milliseconds()
];
},
isValid : function () {
if (this._isValid == null) {
if (this._a) {
this._isValid = !compareArrays(this._a, (this._isUTC ? moment.utc(this._a) : moment(this._a)).toArray());
} else {
this._isValid = !isNaN(this._d.getTime());
}
}
return !!this._isValid;
},
utc : function () {
this._isUTC = true;
return this;
},
local : function () {
this._isUTC = false;
return this;
},
format : function (inputString) {
var output = formatMoment(this, inputString || moment.defaultFormat);
return this.lang().postformat(output);
},
add : function (input, val) {
var dur;
// switch args to support add('s', 1) and add(1, 's')
if (typeof input === 'string') {
dur = moment.duration(+val, input);
} else {
dur = moment.duration(input, val);
}
addOrSubtractDurationFromMoment(this, dur, 1);
return this;
},
subtract : function (input, val) {
var dur;
// switch args to support subtract('s', 1) and subtract(1, 's')
if (typeof input === 'string') {
dur = moment.duration(+val, input);
} else {
dur = moment.duration(input, val);
}
addOrSubtractDurationFromMoment(this, dur, -1);
return this;
},
diff : function (input, units, asFloat) {
var that = this._isUTC ? moment(input).utc() : moment(input).local(),
zoneDiff = (this.zone() - that.zone()) * 6e4,
diff, output;
if (units) {
// standardize on singular form
units = units.replace(/s$/, '');
}
if (units === 'year' || units === 'month') {
diff = (this.daysInMonth() + that.daysInMonth()) * 432e5; // 24 * 60 * 60 * 1000 / 2
output = ((this.year() - that.year()) * 12) + (this.month() - that.month());
output += ((this - moment(this).startOf('month')) - (that - moment(that).startOf('month'))) / diff;
if (units === 'year') {
output = output / 12;
}
} else {
diff = (this - that) - zoneDiff;
output = units === 'second' ? diff / 1e3 : // 1000
units === 'minute' ? diff / 6e4 : // 1000 * 60
units === 'hour' ? diff / 36e5 : // 1000 * 60 * 60
units === 'day' ? diff / 864e5 : // 1000 * 60 * 60 * 24
units === 'week' ? diff / 6048e5 : // 1000 * 60 * 60 * 24 * 7
diff;
}
return asFloat ? output : absRound(output);
},
from : function (time, withoutSuffix) {
return moment.duration(this.diff(time)).lang(this.lang()._abbr).humanize(!withoutSuffix);
},
fromNow : function (withoutSuffix) {
return this.from(moment(), withoutSuffix);
},
calendar : function () {
var diff = this.diff(moment().startOf('day'), 'days', true),
format = diff < -6 ? 'sameElse' :
diff < -1 ? 'lastWeek' :
diff < 0 ? 'lastDay' :
diff < 1 ? 'sameDay' :
diff < 2 ? 'nextDay' :
diff < 7 ? 'nextWeek' : 'sameElse';
return this.format(this.lang().calendar(format, this));
},
isLeapYear : function () {
var year = this.year();
return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
},
isDST : function () {
return (this.zone() < moment([this.year()]).zone() ||
this.zone() < moment([this.year(), 5]).zone());
},
day : function (input) {
var day = this._isUTC ? this._d.getUTCDay() : this._d.getDay();
return input == null ? day :
this.add({ d : input - day });
},
startOf: function (units) {
units = units.replace(/s$/, '');
// the following switch intentionally omits break keywords
// to utilize falling through the cases.
switch (units) {
case 'year':
this.month(0);
/* falls through */
case 'month':
this.date(1);
/* falls through */
case 'week':
case 'day':
this.hours(0);
/* falls through */
case 'hour':
this.minutes(0);
/* falls through */
case 'minute':
this.seconds(0);
/* falls through */
case 'second':
this.milliseconds(0);
/* falls through */
}
// weeks are a special case
if (units === 'week') {
this.day(0);
}
return this;
},
endOf: function (units) {
return this.startOf(units).add(units.replace(/s?$/, 's'), 1).subtract('ms', 1);
},
isAfter: function (input, units) {
units = typeof units !== 'undefined' ? units : 'millisecond';
return +this.clone().startOf(units) > +moment(input).startOf(units);
},
isBefore: function (input, units) {
units = typeof units !== 'undefined' ? units : 'millisecond';
return +this.clone().startOf(units) < +moment(input).startOf(units);
},
isSame: function (input, units) {
units = typeof units !== 'undefined' ? units : 'millisecond';
return +this.clone().startOf(units) === +moment(input).startOf(units);
},
zone : function () {
return this._isUTC ? 0 : this._d.getTimezoneOffset();
},
daysInMonth : function () {
return moment.utc([this.year(), this.month() + 1, 0]).date();
},
dayOfYear : function (input) {
var dayOfYear = round((moment(this).startOf('day') - moment(this).startOf('year')) / 864e5) + 1;
return input == null ? dayOfYear : this.add("d", (input - dayOfYear));
},
isoWeek : function (input) {
var week = weekOfYear(this, 1, 4);
return input == null ? week : this.add("d", (input - week) * 7);
},
week : function (input) {
var week = this.lang().week(this);
return input == null ? week : this.add("d", (input - week) * 7);
},
// If passed a language key, it will set the language for this
// instance. Otherwise, it will return the language configuration
// variables for this instance.
lang : function (key) {
if (key === undefined) {
return this._lang;
} else {
this._lang = getLangDefinition(key);
return this;
}
}
};
// helper for adding shortcuts
function makeGetterAndSetter(name, key) {
moment.fn[name] = moment.fn[name + 's'] = function (input) {
var utc = this._isUTC ? 'UTC' : '';
if (input != null) {
this._d['set' + utc + key](input);
return this;
} else {
return this._d['get' + utc + key]();
}
};
}
// loop through and add shortcuts (Month, Date, Hours, Minutes, Seconds, Milliseconds)
for (i = 0; i < proxyGettersAndSetters.length; i ++) {
makeGetterAndSetter(proxyGettersAndSetters[i].toLowerCase().replace(/s$/, ''), proxyGettersAndSetters[i]);
}
// add shortcut for year (uses different syntax than the getter/setter 'year' == 'FullYear')
makeGetterAndSetter('year', 'FullYear');
// add plural methods
moment.fn.days = moment.fn.day;
moment.fn.weeks = moment.fn.week;
moment.fn.isoWeeks = moment.fn.isoWeek;
/************************************
Duration Prototype
************************************/
moment.duration.fn = Duration.prototype = {
weeks : function () {
return absRound(this.days() / 7);
},
valueOf : function () {
return this._milliseconds +
this._days * 864e5 +
this._months * 2592e6;
},
humanize : function (withSuffix) {
var difference = +this,
output = relativeTime(difference, !withSuffix, this.lang());
if (withSuffix) {
output = this.lang().pastFuture(difference, output);
}
return this.lang().postformat(output);
},
lang : moment.fn.lang
};
function makeDurationGetter(name) {
moment.duration.fn[name] = function () {
return this._data[name];
};
}
function makeDurationAsGetter(name, factor) {
moment.duration.fn['as' + name] = function () {
return +this / factor;
};
}
for (i in unitMillisecondFactors) {
if (unitMillisecondFactors.hasOwnProperty(i)) {
makeDurationAsGetter(i, unitMillisecondFactors[i]);
makeDurationGetter(i.toLowerCase());
}
}
makeDurationAsGetter('Weeks', 6048e5);
/************************************
Default Lang
************************************/
// Set default language, other languages will inherit from English.
moment.lang('en', {
ordinal : function (number) {
var b = number % 10,
output = (~~ (number % 100 / 10) === 1) ? 'th' :
(b === 1) ? 'st' :
(b === 2) ? 'nd' :
(b === 3) ? 'rd' : 'th';
return number + output;
}
});
/************************************
Exposing Moment
************************************/
// CommonJS module is defined
if (hasModule) {
module.exports = moment;
}
/*global ender:false */
if (typeof ender === 'undefined') {
// here, `this` means `window` in the browser, or `global` on the server
// add `moment` as a global object via a string identifier,
// for Closure Compiler "advanced" mode
this['moment'] = moment;
}
/*global define:false */
if (typeof define === "function" && define.amd) {
define("moment", [], function () {
return moment;
});
}
}).call(this);
})()
},{}]},{},[1])(1)
});
;