var Emitter = require('emitter-component'); var Hammer = require('../module/hammer'); var moment = require('../module/moment'); var util = require('../util'); var DataSet = require('../DataSet'); var DataView = require('../DataView'); var Range = require('./Range'); var Core = require('./Core'); var TimeAxis = require('./component/TimeAxis'); var CurrentTime = require('./component/CurrentTime'); var CustomTime = require('./component/CustomTime'); var ItemSet = require('./component/ItemSet'); var printStyle = require('../shared/Validator').printStyle; var allOptions = require('./optionsTimeline').allOptions; var configureOptions = require('./optionsTimeline').configureOptions; import Configurator from '../shared/Configurator'; import Validator from '../shared/Validator'; /** * Create a timeline visualization * @param {HTMLElement} container * @param {vis.DataSet | vis.DataView | Array} [items] * @param {vis.DataSet | vis.DataView | Array} [groups] * @param {Object} [options] See Timeline.setOptions for the available options. * @constructor * @extends Core */ function Timeline (container, items, groups, options) { if (!(this instanceof Timeline)) { throw new SyntaxError('Constructor must be called with the new operator'); } // if the third element is options, the forth is groups (optionally); if (!(Array.isArray(groups) || groups instanceof DataSet || groups instanceof DataView) && groups instanceof Object) { var forthArgument = options; options = groups; groups = forthArgument; } var me = this; this.defaultOptions = { start: null, end: null, autoResize: true, throttleRedraw: 0, // ms orientation: { axis: 'bottom', // axis orientation: 'bottom', 'top', or 'both' item: 'bottom' // not relevant }, rtl: false, moment: moment, width: null, height: null, maxHeight: null, minHeight: null }; this.options = util.deepExtend({}, this.defaultOptions); // Create the DOM, props, and emitter this._create(container); // all components listed here will be repainted automatically this.components = []; this.body = { dom: this.dom, domProps: this.props, emitter: { on: this.on.bind(this), off: this.off.bind(this), emit: this.emit.bind(this) }, hiddenDates: [], util: { getScale: function () { return me.timeAxis.step.scale; }, getStep: function () { return me.timeAxis.step.step; }, toScreen: me._toScreen.bind(me), toGlobalScreen: me._toGlobalScreen.bind(me), // this refers to the root.width toTime: me._toTime.bind(me), toGlobalTime : me._toGlobalTime.bind(me) } }; // range this.range = new Range(this.body); this.components.push(this.range); this.body.range = this.range; // time axis this.timeAxis = new TimeAxis(this.body); this.timeAxis2 = null; // used in case of orientation option 'both' this.components.push(this.timeAxis); // current time bar this.currentTime = new CurrentTime(this.body); this.components.push(this.currentTime); // item set this.itemSet = new ItemSet(this.body, this.options); this.components.push(this.itemSet); this.itemsData = null; // DataSet this.groupsData = null; // DataSet this.on('tap', function (event) { me.emit('click', me.getEventProperties(event)) }); this.on('doubletap', function (event) { me.emit('doubleClick', me.getEventProperties(event)) }); this.dom.root.oncontextmenu = function (event) { me.emit('contextmenu', me.getEventProperties(event)) }; //Single time autoscale/fit this.fitDone = false; this.on('changed', function (){ if (this.itemsData == null) return; if (!me.fitDone) { me.fitDone = true; if (me.options.start != undefined || me.options.end != undefined) { if (me.options.start == undefined || me.options.end == undefined) { var range = me.getItemRange(); } var start = me.options.start != undefined ? me.options.start : range.min; var end = me.options.end != undefined ? me.options.end : range.max; me.setWindow(start, end, {animation: false}); } else { me.fit({animation: false}); } } }); // apply options if (options) { this.setOptions(options); } // IMPORTANT: THIS HAPPENS BEFORE SET ITEMS! if (groups) { this.setGroups(groups); } // create itemset if (items) { this.setItems(items); } // draw for the first time this._redraw(); } // Extend the functionality from Core Timeline.prototype = new Core(); /** * Load a configurator * @return {Object} * @private */ Timeline.prototype._createConfigurator = function () { return new Configurator(this, this.dom.container, configureOptions); }; /** * Force a redraw. The size of all items will be recalculated. * Can be useful to manually redraw when option autoResize=false and the window * has been resized, or when the items CSS has been changed. * * Note: this function will be overridden on construction with a trottled version */ Timeline.prototype.redraw = function() { this.itemSet && this.itemSet.markDirty({refreshItems: true}); this._redraw(); }; Timeline.prototype.setOptions = function (options) { // validate options let errorFound = Validator.validate(options, allOptions); if (errorFound === true) { console.log('%cErrors have been found in the supplied options object.', printStyle); } Core.prototype.setOptions.call(this, options); if ('type' in options) { if (options.type !== this.options.type) { this.options.type = options.type; // force recreation of all items var itemsData = this.itemsData; if (itemsData) { var selection = this.getSelection(); this.setItems(null); // remove all this.setItems(itemsData); // add all this.setSelection(selection); // restore selection } } } }; /** * Set items * @param {vis.DataSet | Array | null} items */ Timeline.prototype.setItems = function(items) { // convert to type DataSet when needed var newDataSet; if (!items) { newDataSet = null; } else if (items instanceof DataSet || items instanceof DataView) { newDataSet = items; } else { // turn an array into a dataset newDataSet = new DataSet(items, { type: { start: 'Date', end: 'Date' } }); } // set items this.itemsData = newDataSet; this.itemSet && this.itemSet.setItems(newDataSet); }; /** * Set groups * @param {vis.DataSet | Array} groups */ Timeline.prototype.setGroups = function(groups) { // convert to type DataSet when needed var newDataSet; if (!groups) { newDataSet = null; } else if (groups instanceof DataSet || groups instanceof DataView) { newDataSet = groups; } else { // turn an array into a dataset newDataSet = new DataSet(groups); } this.groupsData = newDataSet; this.itemSet.setGroups(newDataSet); }; /** * Set both items and groups in one go * @param {{items: Array | vis.DataSet, groups: Array | vis.DataSet}} data */ Timeline.prototype.setData = function (data) { if (data && data.groups) { this.setGroups(data.groups); } if (data && data.items) { this.setItems(data.items); } }; /** * Set selected items by their id. Replaces the current selection * Unknown id's are silently ignored. * @param {string[] | string} [ids] An array with zero or more id's of the items to be * selected. If ids is an empty array, all items will be * unselected. * @param {Object} [options] Available options: * `focus: boolean` * If true, focus will be set to the selected item(s) * `animation: boolean | {duration: number, easingFunction: string}` * If true (default), the range is animated * smoothly to the new window. An object can be * provided to specify duration and easing function. * Default duration is 500 ms, and default easing * function is 'easeInOutQuad'. * Only applicable when option focus is true. */ Timeline.prototype.setSelection = function(ids, options) { this.itemSet && this.itemSet.setSelection(ids); if (options && options.focus) { this.focus(ids, options); } }; /** * Get the selected items by their id * @return {Array} ids The ids of the selected items */ Timeline.prototype.getSelection = function() { return this.itemSet && this.itemSet.getSelection() || []; }; /** * Adjust the visible window such that the selected item (or multiple items) * are centered on screen. * @param {String | String[]} id An item id or array with item ids * @param {Object} [options] Available options: * `animation: boolean | {duration: number, easingFunction: string}` * If true (default), the range is animated * smoothly to the new window. An object can be * provided to specify duration and easing function. * Default duration is 500 ms, and default easing * function is 'easeInOutQuad'. */ Timeline.prototype.focus = function(id, options) { if (!this.itemsData || id == undefined) return; var ids = Array.isArray(id) ? id : [id]; // get the specified item(s) var itemsData = this.itemsData.getDataSet().get(ids, { type: { start: 'Date', end: 'Date' } }); // calculate minimum start and maximum end of specified items var start = null; var end = null; itemsData.forEach(function (itemData) { var s = itemData.start.valueOf(); var e = 'end' in itemData ? itemData.end.valueOf() : itemData.start.valueOf(); if (start === null || s < start) { start = s; } if (end === null || e > end) { end = e; } }); if (start !== null && end !== null) { // calculate the new middle and interval for the window var middle = (start + end) / 2; var interval = Math.max((this.range.end - this.range.start), (end - start) * 1.1); var animation = (options && options.animation !== undefined) ? options.animation : true; this.range.setRange(middle - interval / 2, middle + interval / 2, animation); } }; /** * Set Timeline window such that it fits all items * @param {Object} [options] Available options: * `animation: boolean | {duration: number, easingFunction: string}` * If true (default), the range is animated * smoothly to the new window. An object can be * provided to specify duration and easing function. * Default duration is 500 ms, and default easing * function is 'easeInOutQuad'. */ Timeline.prototype.fit = function (options) { var animation = (options && options.animation !== undefined) ? options.animation : true; var range; var dataset = this.itemsData && this.itemsData.getDataSet(); if (dataset.length === 1 && dataset.get()[0].end === undefined) { // a single item -> don't fit, just show a range around the item from -4 to +3 days range = this.getDataRange(); this.moveTo(range.min.valueOf(), {animation}); } else { // exactly fit the items (plus a small margin) range = this.getItemRange(); this.range.setRange(range.min, range.max, animation); } }; /** * Determine the range of the items, taking into account their actual width * and a margin of 10 pixels on both sides. * @return {{min: Date | null, max: Date | null}} */ Timeline.prototype.getItemRange = function () { // get a rough approximation for the range based on the items start and end dates var range = this.getDataRange(); var min = range.min !== null ? range.min.valueOf() : null; var max = range.max !== null ? range.max.valueOf() : null; var minItem = null; var maxItem = null; if (min != null && max != null) { var interval = (max - min); // ms if (interval <= 0) { interval = 10; } var factor = interval / this.props.center.width; function getStart(item) { return util.convert(item.data.start, 'Date').valueOf() } function getEnd(item) { var end = item.data.end != undefined ? item.data.end : item.data.start; return util.convert(end, 'Date').valueOf(); } // calculate the date of the left side and right side of the items given util.forEach(this.itemSet.items, function (item) { item.show(); item.repositionX(); var start = getStart(item); var end = getEnd(item); if (this.options.rtl) { var startSide = start - (item.getWidthRight() + 10) * factor; var endSide = end + (item.getWidthLeft() + 10) * factor; } else { var startSide = start - (item.getWidthLeft() + 10) * factor; var endSide = end + (item.getWidthRight() + 10) * factor; } if (startSide < min) { min = startSide; minItem = item; } if (endSide > max) { max = endSide; maxItem = item; } }.bind(this)); if (minItem && maxItem) { var lhs = minItem.getWidthLeft() + 10; var rhs = maxItem.getWidthRight() + 10; var delta = this.props.center.width - lhs - rhs; // px if (delta > 0) { if (this.options.rtl) { min = getStart(minItem) - rhs * interval / delta; // ms max = getEnd(maxItem) + lhs * interval / delta; // ms } else { min = getStart(minItem) - lhs * interval / delta; // ms max = getEnd(maxItem) + rhs * interval / delta; // ms } } } } return { min: min != null ? new Date(min) : null, max: max != null ? new Date(max) : null } }; /** * Calculate the data range of the items start and end dates * @returns {{min: Date | null, max: Date | null}} */ Timeline.prototype.getDataRange = function() { var min = null; var max = null; var dataset = this.itemsData && this.itemsData.getDataSet(); if (dataset) { dataset.forEach(function (item) { var start = util.convert(item.start, 'Date').valueOf(); var end = util.convert(item.end != undefined ? item.end : item.start, 'Date').valueOf(); if (min === null || start < min) { min = start; } if (max === null || end > max) { max = end; } }); } return { min: min != null ? new Date(min) : null, max: max != null ? new Date(max) : null } }; /** * Generate Timeline related information from an event * @param {Event} event * @return {Object} An object with related information, like on which area * The event happened, whether clicked on an item, etc. */ Timeline.prototype.getEventProperties = function (event) { var clientX = event.center ? event.center.x : event.clientX; var clientY = event.center ? event.center.y : event.clientY; if (this.options.rtl) { var x = util.getAbsoluteRight(this.dom.centerContainer) - clientX; } else { var x = clientX - util.getAbsoluteLeft(this.dom.centerContainer); } var y = clientY - util.getAbsoluteTop(this.dom.centerContainer); var item = this.itemSet.itemFromTarget(event); var group = this.itemSet.groupFromTarget(event); var customTime = CustomTime.customTimeFromTarget(event); var snap = this.itemSet.options.snap || null; var scale = this.body.util.getScale(); var step = this.body.util.getStep(); var time = this._toTime(x); var snappedTime = snap ? snap(time, scale, step) : time; var element = util.getTarget(event); var what = null; if (item != null) {what = 'item';} else if (customTime != null) {what = 'custom-time';} else if (util.hasParent(element, this.timeAxis.dom.foreground)) {what = 'axis';} else if (this.timeAxis2 && util.hasParent(element, this.timeAxis2.dom.foreground)) {what = 'axis';} else if (util.hasParent(element, this.itemSet.dom.labelSet)) {what = 'group-label';} else if (util.hasParent(element, this.currentTime.bar)) {what = 'current-time';} else if (util.hasParent(element, this.dom.center)) {what = 'background';} return { event: event, item: item ? item.id : null, group: group ? group.groupId : null, what: what, pageX: event.srcEvent ? event.srcEvent.pageX : event.pageX, pageY: event.srcEvent ? event.srcEvent.pageY : event.pageY, x: x, y: y, time: time, snappedTime: snappedTime } }; /** * Extend the drag event handler from Core, move the timeline vertically * @param {Event} event * @private */ Timeline.prototype._onDrag = function (event) { // refuse to drag when we where pinching to prevent the timeline make a jump // when releasing the fingers in opposite order from the touch screen, and refuse // to drag when an item is already being dragged if (!this.touch.allowDragging || this.itemSet.touchParams.itemIsDragging) return; var delta = event.deltaY; var oldScrollTop = this._getScrollTop(); var newScrollTop = this._setScrollTop(this.touch.initialScrollTop + delta); if (newScrollTop != oldScrollTop) { this.emit("verticalDrag"); } }; module.exports = Timeline;