var Emitter = require('emitter-component'); var Hammer = require('../module/hammer'); 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 LineGraph = require('./component/LineGraph'); /** * Create a timeline visualization * @param {HTMLElement} container * @param {vis.DataSet | Array} [items] * @param {Object} [options] See Graph2d.setOptions for the available options. * @constructor * @extends Core */ function Graph2d (container, items, groups, options) { // if the third element is options, the forth is groups (optionally); if (!(Array.isArray(groups) || groups instanceof DataSet) && groups instanceof Object) { var forthArgument = options; options = groups; groups = forthArgument; } var me = this; this.defaultOptions = { start: null, end: null, autoResize: true, orientation: { axis: 'bottom', // axis orientation: 'bottom', 'top', or 'both' item: 'bottom' // not relevant for Graph2d }, 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: { 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.components.push(this.timeAxis); //this.body.util.snap = this.timeAxis.snap.bind(this.timeAxis); // current time bar this.currentTime = new CurrentTime(this.body); this.components.push(this.currentTime); // item set this.linegraph = new LineGraph(this.body); this.components.push(this.linegraph); 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)) }; // 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); } else { this._redraw(); } } // Extend the functionality from Core Graph2d.prototype = new Core(); /** * Set items * @param {vis.DataSet | Array | null} items */ Graph2d.prototype.setItems = function(items) { var initialLoad = (this.itemsData == null); // 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.linegraph && this.linegraph.setItems(newDataSet); if (initialLoad) { if (this.options.start != undefined || this.options.end != undefined) { var start = this.options.start != undefined ? this.options.start : null; var end = this.options.end != undefined ? this.options.end : null; this.setWindow(start, end, {animation: false}); } else { this.fit({animation: false}); } } }; /** * Set groups * @param {vis.DataSet | Array} groups */ Graph2d.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.linegraph.setGroups(newDataSet); }; /** * Returns an object containing an SVG element with the icon of the group (size determined by iconWidth and iconHeight), the label of the group (content) and the yAxisOrientation of the group (left or right). * @param groupId * @param width * @param height */ Graph2d.prototype.getLegend = function(groupId, width, height) { if (width === undefined) {width = 15;} if (height === undefined) {height = 15;} if (this.linegraph.groups[groupId] !== undefined) { return this.linegraph.groups[groupId].getLegend(width,height); } else { return "cannot find group:" + groupId; } }; /** * This checks if the visible option of the supplied group (by ID) is true or false. * @param groupId * @returns {*} */ Graph2d.prototype.isGroupVisible = function(groupId) { if (this.linegraph.groups[groupId] !== undefined) { return (this.linegraph.groups[groupId].visible && (this.linegraph.options.groups.visibility[groupId] === undefined || this.linegraph.options.groups.visibility[groupId] == true)); } else { return false; } }; /** * 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 */ Graph2d.prototype.getItemRange = function() { var min = null; var max = null; // calculate min from start filed for (var groupId in this.linegraph.groups) { if (this.linegraph.groups.hasOwnProperty(groupId)) { if (this.linegraph.groups[groupId].visible == true) { for (var i = 0; i < this.linegraph.groups[groupId].itemsData.length; i++) { var item = this.linegraph.groups[groupId].itemsData[i]; var value = util.convert(item.x, 'Date').valueOf(); min = min == null ? value : min > value ? value : min; max = max == null ? value : max < value ? value : max; } } } } 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. */ Graph2d.prototype.getEventProperties = function (event) { var pageX = event.center ? event.center.x : event.pageX; var pageY = event.center ? event.center.y : event.pageY; var x = pageX - util.getAbsoluteLeft(this.dom.centerContainer); var y = pageY - util.getAbsoluteTop(this.dom.centerContainer); var time = this._toTime(x); var customTime = CustomTime.customTimeFromTarget(event); var element = util.getTarget(event); var what = null; 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.linegraph.yAxisLeft.dom.frame)) {what = 'data-axis';} else if (util.hasParent(element, this.linegraph.yAxisRight.dom.frame)) {what = 'data-axis';} else if (util.hasParent(element, this.linegraph.legendLeft.dom.frame)) {what = 'legend';} else if (util.hasParent(element, this.linegraph.legendRight.dom.frame)) {what = 'legend';} else if (customTime != null) {what = 'custom-time';} else if (util.hasParent(element, this.currentTime.bar)) {what = 'current-time';} else if (util.hasParent(element, this.dom.center)) {what = 'background';} var value = []; var yAxisLeft = this.linegraph.yAxisLeft; var yAxisRight = this.linegraph.yAxisRight; if (!yAxisLeft.hidden) { value.push(yAxisLeft.screenToValue(y)); } if (!yAxisRight.hidden) { value.push(yAxisRight.screenToValue(y)); } return { event: event, what: what, pageX: pageX, pageY: pageY, x: x, y: y, time: time, value: value } }; module.exports = Graph2d;