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317 lines
8.7 KiB
Plaintext
317 lines
8.7 KiB
Plaintext
11 months ago
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/**
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* @license Highcharts JS v3.0.6 (2013-10-04)
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* Prototype adapter
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*
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* @author Michael Nelson, Torstein Hønsi.
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*
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* Feel free to use and modify this script.
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* Highcharts license: www.highcharts.com/license.
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*/
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// JSLint options:
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/*global Effect, Class, Event, Element, $, $$, $A */
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// Adapter interface between prototype and the Highcharts charting library
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var HighchartsAdapter = (function () {
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var hasEffect = typeof Effect !== 'undefined';
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return {
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/**
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* Initialize the adapter. This is run once as Highcharts is first run.
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* @param {Object} pathAnim The helper object to do animations across adapters.
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*/
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init: function (pathAnim) {
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if (hasEffect) {
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/**
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* Animation for Highcharts SVG element wrappers only
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* @param {Object} element
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* @param {Object} attribute
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* @param {Object} to
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* @param {Object} options
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*/
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Effect.HighchartsTransition = Class.create(Effect.Base, {
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initialize: function (element, attr, to, options) {
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var from,
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opts;
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this.element = element;
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this.key = attr;
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from = element.attr ? element.attr(attr) : $(element).getStyle(attr);
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// special treatment for paths
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if (attr === 'd') {
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this.paths = pathAnim.init(
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element,
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element.d,
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to
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);
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this.toD = to;
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// fake values in order to read relative position as a float in update
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from = 0;
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to = 1;
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}
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opts = Object.extend((options || {}), {
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from: from,
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to: to,
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attribute: attr
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});
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this.start(opts);
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},
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setup: function () {
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HighchartsAdapter._extend(this.element);
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// If this is the first animation on this object, create the _highcharts_animation helper that
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// contain pointers to the animation objects.
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if (!this.element._highchart_animation) {
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this.element._highchart_animation = {};
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}
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// Store a reference to this animation instance.
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this.element._highchart_animation[this.key] = this;
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},
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update: function (position) {
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var paths = this.paths,
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element = this.element,
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obj;
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if (paths) {
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position = pathAnim.step(paths[0], paths[1], position, this.toD);
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}
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if (element.attr) { // SVGElement
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if (element.element) { // If not, it has been destroyed (#1405)
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element.attr(this.options.attribute, position);
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}
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} else { // HTML, #409
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obj = {};
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obj[this.options.attribute] = position;
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$(element).setStyle(obj);
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}
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},
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finish: function () {
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// Delete the property that holds this animation now that it is finished.
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// Both canceled animations and complete ones gets a 'finish' call.
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if (this.element && this.element._highchart_animation) { // #1405
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delete this.element._highchart_animation[this.key];
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}
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}
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});
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}
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},
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/**
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* Run a general method on the framework, following jQuery syntax
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* @param {Object} el The HTML element
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* @param {String} method Which method to run on the wrapped element
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*/
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adapterRun: function (el, method) {
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// This currently works for getting inner width and height. If adding
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// more methods later, we need a conditional implementation for each.
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return parseInt($(el).getStyle(method), 10);
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},
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/**
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* Downloads a script and executes a callback when done.
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* @param {String} scriptLocation
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* @param {Function} callback
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*/
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getScript: function (scriptLocation, callback) {
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var head = $$('head')[0]; // Returns an array, so pick the first element.
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if (head) {
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// Append a new 'script' element, set its type and src attributes, add a 'load' handler that calls the callback
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head.appendChild(new Element('script', { type: 'text/javascript', src: scriptLocation}).observe('load', callback));
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}
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},
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/**
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* Custom events in prototype needs to be namespaced. This method adds a namespace 'h:' in front of
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* events that are not recognized as native.
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*/
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addNS: function (eventName) {
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var HTMLEvents = /^(?:load|unload|abort|error|select|change|submit|reset|focus|blur|resize|scroll)$/,
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MouseEvents = /^(?:click|mouse(?:down|up|over|move|out))$/;
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return (HTMLEvents.test(eventName) || MouseEvents.test(eventName)) ?
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eventName :
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'h:' + eventName;
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},
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// el needs an event to be attached. el is not necessarily a dom element
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addEvent: function (el, event, fn) {
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if (el.addEventListener || el.attachEvent) {
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Event.observe($(el), HighchartsAdapter.addNS(event), fn);
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} else {
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HighchartsAdapter._extend(el);
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el._highcharts_observe(event, fn);
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}
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},
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// motion makes things pretty. use it if effects is loaded, if not... still get to the end result.
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animate: function (el, params, options) {
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var key,
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fx;
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// default options
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options = options || {};
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options.delay = 0;
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options.duration = (options.duration || 500) / 1000;
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options.afterFinish = options.complete;
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// animate wrappers and DOM elements
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if (hasEffect) {
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for (key in params) {
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// The fx variable is seemingly thrown away here, but the Effect.setup will add itself to the _highcharts_animation object
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// on the element itself so its not really lost.
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fx = new Effect.HighchartsTransition($(el), key, params[key], options);
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}
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} else {
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if (el.attr) { // #409 without effects
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for (key in params) {
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el.attr(key, params[key]);
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}
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}
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if (options.complete) {
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options.complete();
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}
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}
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if (!el.attr) { // HTML element, #409
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$(el).setStyle(params);
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}
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},
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// this only occurs in higcharts 2.0+
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stop: function (el) {
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var key;
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if (el._highcharts_extended && el._highchart_animation) {
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for (key in el._highchart_animation) {
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// Cancel the animation
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// The 'finish' function in the Effect object will remove the reference
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el._highchart_animation[key].cancel();
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}
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}
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},
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// um.. each
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each: function (arr, fn) {
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$A(arr).each(fn);
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},
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inArray: function (item, arr, from) {
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return arr ? arr.indexOf(item, from) : -1;
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},
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/**
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* Get the cumulative offset relative to the top left of the page. This method, unlike its
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* jQuery and MooTools counterpart, still suffers from issue #208 regarding the position
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* of a chart within a fixed container.
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*/
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offset: function (el) {
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return $(el).cumulativeOffset();
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},
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// fire an event based on an event name (event) and an object (el).
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// again, el may not be a dom element
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fireEvent: function (el, event, eventArguments, defaultFunction) {
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if (el.fire) {
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el.fire(HighchartsAdapter.addNS(event), eventArguments);
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} else if (el._highcharts_extended) {
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eventArguments = eventArguments || {};
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el._highcharts_fire(event, eventArguments);
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}
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if (eventArguments && eventArguments.defaultPrevented) {
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defaultFunction = null;
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}
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if (defaultFunction) {
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defaultFunction(eventArguments);
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}
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},
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removeEvent: function (el, event, handler) {
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if ($(el).stopObserving) {
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if (event) {
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event = HighchartsAdapter.addNS(event);
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}
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$(el).stopObserving(event, handler);
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} if (window === el) {
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Event.stopObserving(el, event, handler);
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} else {
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HighchartsAdapter._extend(el);
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el._highcharts_stop_observing(event, handler);
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}
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},
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washMouseEvent: function (e) {
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return e;
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},
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// um, grep
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grep: function (arr, fn) {
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return arr.findAll(fn);
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},
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// um, map
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map: function (arr, fn) {
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return arr.map(fn);
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},
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// extend an object to handle highchart events (highchart objects, not svg elements).
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// this is a very simple way of handling events but whatever, it works (i think)
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_extend: function (object) {
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if (!object._highcharts_extended) {
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Object.extend(object, {
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_highchart_events: {},
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_highchart_animation: null,
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_highcharts_extended: true,
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_highcharts_observe: function (name, fn) {
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this._highchart_events[name] = [this._highchart_events[name], fn].compact().flatten();
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},
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_highcharts_stop_observing: function (name, fn) {
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if (name) {
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if (fn) {
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this._highchart_events[name] = [this._highchart_events[name]].compact().flatten().without(fn);
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} else {
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delete this._highchart_events[name];
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}
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} else {
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this._highchart_events = {};
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}
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},
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_highcharts_fire: function (name, args) {
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var target = this;
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(this._highchart_events[name] || []).each(function (fn) {
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// args is never null here
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if (args.stopped) {
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return; // "throw $break" wasn't working. i think because of the scope of 'this'.
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}
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// Attach a simple preventDefault function to skip default handler if called
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args.preventDefault = function () {
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args.defaultPrevented = true;
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};
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args.target = target;
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// If the event handler return false, prevent the default handler from executing
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if (fn.bind(this)(args) === false) {
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args.preventDefault();
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}
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}
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.bind(this));
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}
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});
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}
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}
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};
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}());
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