102 lines
2.6 KiB
JavaScript
102 lines
2.6 KiB
JavaScript
//>>built
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define("dojox/charting/StoreSeries", ["dojo/_base/array", "dojo/_base/declare", "dojo/_base/Deferred"],
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function(arr, declare, Deferred){
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return declare("dojox.charting.StoreSeries", null, {
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constructor: function(store, kwArgs, value){
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// summary:
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// Series adapter for dojo object stores (dojo.store).
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// store: Object:
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// A dojo object store.
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// kwArgs: Object:
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// A store-specific keyword parameters used for querying objects.
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// See dojo.store docs
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// value: Function|Object|String|Null:
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// Function, which takes an object handle, and
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// produces an output possibly inspecting the store's item. Or
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// a dictionary object, which tells what names to extract from
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// an object and how to map them to an output. Or a string, which
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// is a numeric field name to use for plotting. If undefined, null
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// or empty string (the default), "value" field is extracted.
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this.store = store;
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this.kwArgs = kwArgs;
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if(value){
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if(typeof value == "function"){
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this.value = value;
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}else if(typeof value == "object"){
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this.value = function(object){
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var o = {};
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for(var key in value){
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o[key] = object[value[key]];
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}
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return o;
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};
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}else{
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this.value = function(object){
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return object[value];
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};
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}
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}else{
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this.value = function(object){
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return object.value;
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};
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}
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this.data = [];
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this.fetch();
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},
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destroy: function(){
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// summary:
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// Clean up before GC.
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if(this.observeHandle){
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this.observeHandle.dismiss();
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}
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},
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setSeriesObject: function(series){
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// summary:
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// Sets a dojox.charting.Series object we will be working with.
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// series: dojox.charting.Series:
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// Our interface to the chart.
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this.series = series;
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},
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// store fetch loop
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fetch: function(){
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// summary:
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// Fetches data from the store and updates a chart.
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var objects = this.objects = [];
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var self = this;
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if(this.observeHandle){
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this.observeHandle.dismiss();
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}
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var results = this.store.query(this.kwArgs.query, this.kwArgs);
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Deferred.when(results, function(objects){
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self.objects = objects;
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update();
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});
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if(results.observe){
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this.observeHandle = results.observe(update, true);
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}
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function update(){
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self.data = arr.map(self.objects, function(object){
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return self.value(object, self.store);
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});
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self._pushDataChanges();
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}
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},
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_pushDataChanges: function(){
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if(this.series){
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this.series.chart.updateSeries(this.series.name, this);
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this.series.chart.delayedRender();
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}
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}
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});
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});
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