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232 lines
5.7 KiB
232 lines
5.7 KiB
var Hammer = require('../../module/hammer');
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var util = require('../../util');
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var Component = require('./Component');
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var moment = require('../../module/moment');
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var locales = require('../locales');
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/**
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* A custom time bar
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* @param {{range: Range, dom: Object}} body
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* @param {Object} [options] Available parameters:
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* {number | string} id
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* {string} locales
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* {string} locale
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* @constructor CustomTime
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* @extends Component
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*/
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function CustomTime (body, options) {
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this.body = body;
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// default options
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this.defaultOptions = {
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locales: locales,
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locale: 'en',
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id: undefined
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};
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this.options = util.extend({}, this.defaultOptions);
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if (options && options.time) {
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this.customTime = options.time;
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} else {
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this.customTime = new Date();
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}
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this.eventParams = {}; // stores state parameters while dragging the bar
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// create the DOM
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this._create();
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this.setOptions(options);
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}
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CustomTime.prototype = new Component();
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/**
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* Set options for the component. Options will be merged in current options.
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* @param {Object} options Available parameters:
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* {number | string} id
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* {string} locales
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* {string} locale
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*/
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CustomTime.prototype.setOptions = function(options) {
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if (options) {
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// copy all options that we know
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util.selectiveExtend(['locale', 'locales', 'id'], this.options, options);
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}
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};
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/**
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* Create the DOM for the custom time
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* @private
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*/
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CustomTime.prototype._create = function() {
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var bar = document.createElement('div');
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bar['custom-time'] = this;
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bar.className = 'vis-custom-time';
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bar.style.position = 'absolute';
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bar.style.top = '0px';
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bar.style.height = '100%';
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this.bar = bar;
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var drag = document.createElement('div');
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drag.style.position = 'relative';
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drag.style.top = '0px';
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drag.style.left = '-10px';
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drag.style.height = '100%';
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drag.style.width = '20px';
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bar.appendChild(drag);
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// attach event listeners
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this.hammer = new Hammer(drag);
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this.hammer.on('panstart', this._onDragStart.bind(this));
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this.hammer.on('panmove', this._onDrag.bind(this));
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this.hammer.on('panend', this._onDragEnd.bind(this));
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// TODO: cleanup
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//this.hammer.on('pan', function (event) {
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// event.preventDefault();
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//});
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};
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/**
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* Destroy the CustomTime bar
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*/
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CustomTime.prototype.destroy = function () {
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this.hide();
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this.hammer.destroy();
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this.hammer = null;
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this.body = null;
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};
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/**
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* Repaint the component
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* @return {boolean} Returns true if the component is resized
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*/
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CustomTime.prototype.redraw = function () {
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var parent = this.body.dom.backgroundVertical;
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if (this.bar.parentNode != parent) {
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// attach to the dom
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if (this.bar.parentNode) {
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this.bar.parentNode.removeChild(this.bar);
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}
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parent.appendChild(this.bar);
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}
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var x = this.body.util.toScreen(this.customTime);
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var locale = this.options.locales[this.options.locale];
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if (!locale) {
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if (!this.warned) {
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console.log('WARNING: options.locales[\'' + this.options.locale + '\'] not found. See http://visjs.org/docs/timeline.html#Localization');
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this.warned = true;
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}
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locale = this.options.locales['en']; // fall back on english when not available
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}
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var title = locale.time + ': ' + moment(this.customTime).format('dddd, MMMM Do YYYY, H:mm:ss');
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title = title.charAt(0).toUpperCase() + title.substring(1);
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this.bar.style.left = x + 'px';
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this.bar.title = title;
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return false;
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};
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/**
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* Remove the CustomTime from the DOM
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*/
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CustomTime.prototype.hide = function () {
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// remove the line from the DOM
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if (this.bar.parentNode) {
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this.bar.parentNode.removeChild(this.bar);
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}
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};
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/**
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* Set custom time.
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* @param {Date | number | string} time
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*/
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CustomTime.prototype.setCustomTime = function(time) {
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this.customTime = util.convert(time, 'Date');
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this.redraw();
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};
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/**
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* Retrieve the current custom time.
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* @return {Date} customTime
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*/
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CustomTime.prototype.getCustomTime = function() {
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return new Date(this.customTime.valueOf());
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};
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/**
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* Start moving horizontally
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* @param {Event} event
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* @private
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*/
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CustomTime.prototype._onDragStart = function(event) {
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this.eventParams.dragging = true;
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this.eventParams.customTime = this.customTime;
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event.stopPropagation();
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};
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/**
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* Perform moving operating.
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* @param {Event} event
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* @private
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*/
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CustomTime.prototype._onDrag = function (event) {
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if (!this.eventParams.dragging) return;
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var x = this.body.util.toScreen(this.eventParams.customTime) + event.deltaX;
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var time = this.body.util.toTime(x);
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this.setCustomTime(time);
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// fire a timechange event
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this.body.emitter.emit('timechange', {
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id: this.options.id,
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time: new Date(this.customTime.valueOf())
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});
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event.stopPropagation();
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};
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/**
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* Stop moving operating.
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* @param {Event} event
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* @private
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*/
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CustomTime.prototype._onDragEnd = function (event) {
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if (!this.eventParams.dragging) return;
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// fire a timechanged event
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this.body.emitter.emit('timechanged', {
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id: this.options.id,
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time: new Date(this.customTime.valueOf())
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});
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event.stopPropagation();
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};
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/**
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* Find a custom time from an event target:
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* searches for the attribute 'custom-time' in the event target's element tree
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* @param {Event} event
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* @return {CustomTime | null} customTime
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*/
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CustomTime.customTimeFromTarget = function(event) {
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var target = event.target;
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while (target) {
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if (target.hasOwnProperty('custom-time')) {
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return target['custom-time'];
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}
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target = target.parentNode;
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}
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return null;
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};
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module.exports = CustomTime;
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