122 lines
3.5 KiB
JavaScript
122 lines
3.5 KiB
JavaScript
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//>>built
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define("dojox/charting/plot2d/_PlotEvents", ["dojo/_base/lang", "dojo/_base/array", "dojo/_base/declare", "dojo/_base/connect"],
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function(lang, arr, declare, hub){
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return declare("dojox.charting.plot2d._PlotEvents", null, {
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constructor: function(){
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this._shapeEvents = [];
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this._eventSeries = {};
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},
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destroy: function(){
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// summary:
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// Destroy any internal elements and event handlers.
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this.resetEvents();
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this.inherited(arguments);
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},
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plotEvent: function(o){
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// summary:
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// Stub function for use by specific plots.
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// o: Object
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// An object intended to represent event parameters.
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},
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raiseEvent: function(o){
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// summary:
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// Raises events in predefined order
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// o: Object
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// An object intended to represent event parameters.
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this.plotEvent(o);
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var t = lang.delegate(o);
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t.originalEvent = o.type;
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t.originalPlot = o.plot;
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t.type = "onindirect";
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arr.forEach(this.chart.stack, function(plot){
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if(plot !== this && plot.plotEvent){
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t.plot = plot;
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plot.plotEvent(t);
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}
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}, this);
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},
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connect: function(object, method){
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// summary:
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// Helper function to connect any object's method to our plotEvent.
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// object: Object
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// The object to connect to.
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// method: String|Function
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// The method to fire when our plotEvent is fired.
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// returns: Array
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// The handle as returned from dojo.connect (see dojo.connect).
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this.dirty = true;
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return hub.connect(this, "plotEvent", object, method); // Array
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},
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events: function(){
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// summary:
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// Find out if any event handlers have been connected to our plotEvent.
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// returns: Boolean
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// A flag indicating that there are handlers attached.
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return !!this.plotEvent.after;
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},
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resetEvents: function(){
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// summary:
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// Reset all events attached to our plotEvent (i.e. disconnect).
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if(this._shapeEvents.length){
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arr.forEach(this._shapeEvents, function(item){
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item.shape.disconnect(item.handle);
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});
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this._shapeEvents = [];
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}
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this.raiseEvent({type: "onplotreset", plot: this});
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},
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_connectSingleEvent: function(o, eventName){
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this._shapeEvents.push({
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shape: o.eventMask,
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handle: o.eventMask.connect(eventName, this, function(e){
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o.type = eventName;
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o.event = e;
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this.raiseEvent(o);
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o.event = null;
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})
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});
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},
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_connectEvents: function(o){
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if(o){
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o.chart = this.chart;
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o.plot = this;
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o.hAxis = this.hAxis || null;
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o.vAxis = this.vAxis || null;
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o.eventMask = o.eventMask || o.shape;
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this._connectSingleEvent(o, "onmouseover");
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this._connectSingleEvent(o, "onmouseout");
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this._connectSingleEvent(o, "onclick");
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}
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},
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_reconnectEvents: function(seriesName){
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var a = this._eventSeries[seriesName];
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if(a){
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arr.forEach(a, this._connectEvents, this);
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}
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},
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fireEvent: function(seriesName, eventName, index, eventObject){
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// summary:
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// Emulates firing an event for a given data value (specified by
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// an index) of a given series.
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// seriesName: String:
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// Series name.
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// eventName: String:
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// Event name to emulate.
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// index: Number:
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// Valid data value index used to raise an event.
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// eventObject: Object?:
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// Optional event object. Especially useful for synthetic events.
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// Default: null.
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var s = this._eventSeries[seriesName];
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if(s && s.length && index < s.length){
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var o = s[index];
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o.type = eventName;
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o.event = eventObject || null;
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this.raiseEvent(o);
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o.event = null;
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}
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}
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});
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});
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