247 rindas
6,9 KiB
JavaScript
247 rindas
6,9 KiB
JavaScript
define("dijit/WidgetSet", [
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"dojo/_base/array", // array.forEach array.map
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"dojo/_base/declare", // declare
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"dojo/_base/kernel", // kernel.global
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"./registry" // to add functions to dijit.registry
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], function(array, declare, kernel, registry){
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// module:
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// dijit/WidgetSet
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var WidgetSet = declare("dijit.WidgetSet", null, {
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// summary:
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// A set of widgets indexed by id.
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// Deprecated, will be removed in 2.0.
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//
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// example:
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// Create a small list of widgets:
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// | require(["dijit/WidgetSet", "dijit/registry"],
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// | function(WidgetSet, registry){
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// | var ws = new WidgetSet();
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// | ws.add(registry.byId("one"));
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// | ws.add(registry.byId("two"));
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// | // destroy both:
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// | ws.forEach(function(w){ w.destroy(); });
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// | });
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constructor: function(){
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this._hash = {};
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this.length = 0;
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},
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add: function(/*dijit/_WidgetBase*/ widget){
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// summary:
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// Add a widget to this list. If a duplicate ID is detected, a error is thrown.
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//
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// widget: dijit/_WidgetBase
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// Any dijit/_WidgetBase subclass.
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if(this._hash[widget.id]){
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throw new Error("Tried to register widget with id==" + widget.id + " but that id is already registered");
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}
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this._hash[widget.id] = widget;
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this.length++;
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},
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remove: function(/*String*/ id){
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// summary:
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// Remove a widget from this WidgetSet. Does not destroy the widget; simply
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// removes the reference.
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if(this._hash[id]){
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delete this._hash[id];
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this.length--;
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}
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},
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forEach: function(/*Function*/ func, /* Object? */thisObj){
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// summary:
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// Call specified function for each widget in this set.
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//
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// func:
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// A callback function to run for each item. Is passed the widget, the index
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// in the iteration, and the full hash, similar to `array.forEach`.
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//
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// thisObj:
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// An optional scope parameter
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//
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// example:
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// Using the default `dijit.registry` instance:
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// | require(["dijit/WidgetSet", "dijit/registry"],
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// | function(WidgetSet, registry){
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// | registry.forEach(function(widget){
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// | console.log(widget.declaredClass);
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// | });
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// | });
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//
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// returns:
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// Returns self, in order to allow for further chaining.
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thisObj = thisObj || kernel.global;
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var i = 0, id;
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for(id in this._hash){
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func.call(thisObj, this._hash[id], i++, this._hash);
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}
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return this; // dijit/WidgetSet
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},
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filter: function(/*Function*/ filter, /* Object? */thisObj){
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// summary:
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// Filter down this WidgetSet to a smaller new WidgetSet
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// Works the same as `array.filter` and `NodeList.filter`
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//
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// filter:
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// Callback function to test truthiness. Is passed the widget
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// reference and the pseudo-index in the object.
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//
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// thisObj: Object?
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// Option scope to use for the filter function.
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//
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// example:
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// Arbitrary: select the odd widgets in this list
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// |
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// |
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// |
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// | require(["dijit/WidgetSet", "dijit/registry"],
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// | function(WidgetSet, registry){
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// | registry.filter(function(w, i){
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// | return i % 2 == 0;
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// | }).forEach(function(w){ /* odd ones */ });
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// | });
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thisObj = thisObj || kernel.global;
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var res = new WidgetSet(), i = 0, id;
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for(id in this._hash){
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var w = this._hash[id];
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if(filter.call(thisObj, w, i++, this._hash)){
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res.add(w);
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}
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}
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return res; // dijit/WidgetSet
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},
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byId: function(/*String*/ id){
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// summary:
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// Find a widget in this list by it's id.
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// example:
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// Test if an id is in a particular WidgetSet
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// | require(["dijit/WidgetSet", "dijit/registry"],
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// | function(WidgetSet, registry){
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// | var ws = new WidgetSet();
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// | ws.add(registry.byId("bar"));
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// | var t = ws.byId("bar") // returns a widget
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// | var x = ws.byId("foo"); // returns undefined
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// | });
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return this._hash[id]; // dijit/_WidgetBase
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},
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byClass: function(/*String*/ cls){
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// summary:
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// Reduce this widgetset to a new WidgetSet of a particular `declaredClass`
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//
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// cls: String
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// The Class to scan for. Full dot-notated string.
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//
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// example:
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// Find all `dijit.TitlePane`s in a page:
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// | require(["dijit/WidgetSet", "dijit/registry"],
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// | function(WidgetSet, registry){
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// | registry.byClass("dijit.TitlePane").forEach(function(tp){ tp.close(); });
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// | });
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var res = new WidgetSet(), id, widget;
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for(id in this._hash){
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widget = this._hash[id];
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if(widget.declaredClass == cls){
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res.add(widget);
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}
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}
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return res; // dijit/WidgetSet
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},
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toArray: function(){
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// summary:
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// Convert this WidgetSet into a true Array
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//
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// example:
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// Work with the widget .domNodes in a real Array
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// | require(["dijit/WidgetSet", "dijit/registry"],
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// | function(WidgetSet, registry){
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// | array.map(registry.toArray(), function(w){ return w.domNode; });
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// | });
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var ar = [];
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for(var id in this._hash){
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ar.push(this._hash[id]);
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}
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return ar; // dijit/_WidgetBase[]
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},
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map: function(/* Function */func, /* Object? */thisObj){
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// summary:
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// Create a new Array from this WidgetSet, following the same rules as `array.map`
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// example:
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// | require(["dijit/WidgetSet", "dijit/registry"],
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// | function(WidgetSet, registry){
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// | var nodes = registry.map(function(w){ return w.domNode; });
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// | });
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//
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// returns:
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// A new array of the returned values.
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return array.map(this.toArray(), func, thisObj); // Array
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},
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every: function(func, thisObj){
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// summary:
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// A synthetic clone of `array.every` acting explicitly on this WidgetSet
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//
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// func: Function
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// A callback function run for every widget in this list. Exits loop
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// when the first false return is encountered.
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//
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// thisObj: Object?
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// Optional scope parameter to use for the callback
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thisObj = thisObj || kernel.global;
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var x = 0, i;
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for(i in this._hash){
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if(!func.call(thisObj, this._hash[i], x++, this._hash)){
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return false; // Boolean
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}
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}
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return true; // Boolean
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},
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some: function(func, thisObj){
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// summary:
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// A synthetic clone of `array.some` acting explicitly on this WidgetSet
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//
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// func: Function
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// A callback function run for every widget in this list. Exits loop
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// when the first true return is encountered.
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//
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// thisObj: Object?
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// Optional scope parameter to use for the callback
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thisObj = thisObj || kernel.global;
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var x = 0, i;
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for(i in this._hash){
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if(func.call(thisObj, this._hash[i], x++, this._hash)){
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return true; // Boolean
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}
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}
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return false; // Boolean
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}
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});
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// Add in 1.x compatibility methods to dijit/registry.
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// These functions won't show up in the API doc but since they are deprecated anyway,
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// that's probably for the best.
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array.forEach(["forEach", "filter", "byClass", "map", "every", "some"], function(func){
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registry[func] = WidgetSet.prototype[func];
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});
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return WidgetSet;
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});
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