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287 lines
8.4 KiB
287 lines
8.4 KiB
var Emitter = require('emitter-component');
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var Hammer = require('../module/hammer');
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var util = require('../util');
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var DataSet = require('../DataSet');
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var DataView = require('../DataView');
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var Range = require('./Range');
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var Core = require('./Core');
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var TimeAxis = require('./component/TimeAxis');
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var CurrentTime = require('./component/CurrentTime');
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var CustomTime = require('./component/CustomTime');
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var LineGraph = require('./component/LineGraph');
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/**
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* Create a timeline visualization
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* @param {HTMLElement} container
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* @param {vis.DataSet | Array | google.visualization.DataTable} [items]
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* @param {Object} [options] See Graph2d.setOptions for the available options.
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* @constructor
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*/
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function Graph2d (container, items, options, groups) {
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for (var coreProp in Core.prototype) {
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if (Core.prototype.hasOwnProperty(coreProp) && !Graph2d.prototype.hasOwnProperty(coreProp)) {
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Graph2d.prototype[coreProp] = Core.prototype[coreProp];
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}
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}
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var me = this;
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this.defaultOptions = {
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start: null,
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end: null,
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autoResize: true,
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orientation: 'bottom',
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width: null,
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height: null,
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maxHeight: null,
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minHeight: null
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};
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this.options = util.deepExtend({}, this.defaultOptions);
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// Create the DOM, props, and emitter
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this._create(container);
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// all components listed here will be repainted automatically
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this.components = [];
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this.body = {
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dom: this.dom,
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domProps: this.props,
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emitter: {
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on: this.on.bind(this),
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off: this.off.bind(this),
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emit: this.emit.bind(this)
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},
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util: {
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snap: null, // will be specified after TimeAxis is created
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toScreen: me._toScreen.bind(me),
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toGlobalScreen: me._toGlobalScreen.bind(me), // this refers to the root.width
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toTime: me._toTime.bind(me),
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toGlobalTime : me._toGlobalTime.bind(me)
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}
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};
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// range
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this.range = new Range(this.body);
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this.components.push(this.range);
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this.body.range = this.range;
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// time axis
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this.timeAxis = new TimeAxis(this.body);
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this.components.push(this.timeAxis);
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this.body.util.snap = this.timeAxis.snap.bind(this.timeAxis);
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// current time bar
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this.currentTime = new CurrentTime(this.body);
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this.components.push(this.currentTime);
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// custom time bar
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// Note: time bar will be attached in this.setOptions when selected
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this.customTime = new CustomTime(this.body);
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this.components.push(this.customTime);
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// item set
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this.linegraph = new LineGraph(this.body);
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this.components.push(this.linegraph);
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this.itemsData = null; // DataSet
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this.groupsData = null; // DataSet
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// apply options
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if (options) {
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this.setOptions(options);
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}
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// IMPORTANT: THIS HAPPENS BEFORE SET ITEMS!
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if (groups) {
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this.setGroups(groups);
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}
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// create itemset
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if (items) {
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this.setItems(items);
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}
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else {
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this.redraw();
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}
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}
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/**
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* Set options. Options will be passed to all components loaded in the Graph2d.
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* @param {Object} [options]
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* {String} orientation
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* Vertical orientation for the Graph2d,
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* can be 'bottom' (default) or 'top'.
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* {String | Number} width
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* Width for the timeline, a number in pixels or
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* a css string like '1000px' or '75%'. '100%' by default.
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* {String | Number} height
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* Fixed height for the Graph2d, a number in pixels or
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* a css string like '400px' or '75%'. If undefined,
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* The Graph2d will automatically size such that
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* its contents fit.
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* {String | Number} minHeight
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* Minimum height for the Graph2d, a number in pixels or
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* a css string like '400px' or '75%'.
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* {String | Number} maxHeight
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* Maximum height for the Graph2d, a number in pixels or
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* a css string like '400px' or '75%'.
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* {Number | Date | String} start
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* Start date for the visible window
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* {Number | Date | String} end
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* End date for the visible window
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*/
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Graph2d.prototype.setOptions = function (options) {
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if (options) {
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// copy the known options
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var fields = ['width', 'height', 'minHeight', 'maxHeight', 'autoResize', 'start', 'end', 'orientation'];
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util.selectiveExtend(fields, this.options, options);
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// enable/disable autoResize
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this._initAutoResize();
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}
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// propagate options to all components
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this.components.forEach(function (component) {
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component.setOptions(options);
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});
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// TODO: remove deprecation error one day (deprecated since version 0.8.0)
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if (options && options.order) {
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throw new Error('Option order is deprecated. There is no replacement for this feature.');
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}
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// redraw everything
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this.redraw();
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};
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/**
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* Set items
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* @param {vis.DataSet | Array | google.visualization.DataTable | null} items
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*/
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Graph2d.prototype.setItems = function(items) {
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var initialLoad = (this.itemsData == null);
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// convert to type DataSet when needed
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var newDataSet;
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if (!items) {
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newDataSet = null;
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}
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else if (items instanceof DataSet || items instanceof DataView) {
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newDataSet = items;
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}
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else {
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// turn an array into a dataset
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newDataSet = new DataSet(items, {
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type: {
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start: 'Date',
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end: 'Date'
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}
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});
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}
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// set items
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this.itemsData = newDataSet;
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this.linegraph && this.linegraph.setItems(newDataSet);
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if (initialLoad && ('start' in this.options || 'end' in this.options)) {
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this.fit();
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var start = ('start' in this.options) ? util.convert(this.options.start, 'Date') : null;
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var end = ('end' in this.options) ? util.convert(this.options.end, 'Date') : null;
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this.setWindow(start, end);
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}
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};
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/**
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* Set groups
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* @param {vis.DataSet | Array | google.visualization.DataTable} groups
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*/
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Graph2d.prototype.setGroups = function(groups) {
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// convert to type DataSet when needed
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var newDataSet;
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if (!groups) {
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newDataSet = null;
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}
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else if (groups instanceof DataSet || groups instanceof DataView) {
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newDataSet = groups;
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}
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else {
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// turn an array into a dataset
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newDataSet = new DataSet(groups);
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}
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this.groupsData = newDataSet;
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this.linegraph.setGroups(newDataSet);
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};
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/**
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* 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).
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* @param groupId
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* @param width
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* @param height
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*/
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Graph2d.prototype.getLegend = function(groupId, width, height) {
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if (width === undefined) {width = 15;}
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if (height === undefined) {height = 15;}
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if (this.linegraph.groups[groupId] !== undefined) {
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return this.linegraph.groups[groupId].getLegend(width,height);
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}
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else {
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return "cannot find group:" + groupId;
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}
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}
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/**
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* This checks if the visible option of the supplied group (by ID) is true or false.
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* @param groupId
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* @returns {*}
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*/
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Graph2d.prototype.isGroupVisible = function(groupId) {
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if (this.linegraph.groups[groupId] !== undefined) {
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return this.linegraph.groups[groupId].visible;
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}
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else {
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return false;
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}
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}
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/**
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* Get the data range of the item set.
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* @returns {{min: Date, max: Date}} range A range with a start and end Date.
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* When no minimum is found, min==null
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* When no maximum is found, max==null
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*/
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Graph2d.prototype.getItemRange = function() {
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// calculate min from start filed
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var dataset = this.itemsData.getDataSet(),
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min = null,
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max = null;
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if (dataset) {
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// calculate the minimum value of the field 'start'
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var minItem = dataset.min('x');
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min = minItem ? util.convert(minItem.x, 'Date').valueOf() : null;
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// Note: we convert first to Date and then to number because else
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// a conversion from ISODate to Number will fail
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// calculate maximum value of fields 'start' and 'end'
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var maxStartItem = dataset.max('x');
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if (maxStartItem) {
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max = util.convert(maxStartItem.x, 'Date').valueOf();
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}
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}
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return {
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min: (min != null) ? new Date(min) : null,
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max: (max != null) ? new Date(max) : null
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};
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};
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module.exports = Graph2d;
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