106 lines
2.8 KiB
JavaScript
106 lines
2.8 KiB
JavaScript
//>>built
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define("dojox/collections/_base", ["dojo/_base/kernel", "dojo/_base/lang", "dojo/_base/array"],
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function(dojo, lang, arr){
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var collections = lang.getObject("dojox.collections", true);
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/*=====
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collections = dojox.collections;
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=====*/
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collections.DictionaryEntry=function(/* string */k, /* object */v){
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// summary
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// return an object of type dojox.collections.DictionaryEntry
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this.key=k;
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this.value=v;
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this.valueOf=function(){
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return this.value; // object
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};
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this.toString=function(){
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return String(this.value); // string
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};
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}
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/* Iterators
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* The collections.Iterators (Iterator and DictionaryIterator) are built to
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* work with the Collections included in this module. However, they *can*
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* be used with arrays and objects, respectively, should one choose to do so.
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*/
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collections.Iterator=function(/* array */a){
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// summary
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// return an object of type dojox.collections.Iterator
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var position=0;
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this.element=a[position]||null;
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this.atEnd=function(){
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// summary
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// Test to see if the internal cursor has reached the end of the internal collection.
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return (position>=a.length); // bool
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};
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this.get=function(){
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// summary
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// Get the next member in the collection.
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if(this.atEnd()){
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return null; // object
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}
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this.element=a[position++];
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return this.element; // object
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};
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this.map=function(/* function */fn, /* object? */scope){
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// summary
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// Functional iteration with optional scope.
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return arr.map(a, fn, scope);
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};
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this.reset=function(){
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// summary
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// reset the internal cursor.
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position=0;
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this.element=a[position];
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};
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}
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/* Notes:
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* The DictionaryIterator no longer supports a key and value property;
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* the reality is that you can use this to iterate over a JS object
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* being used as a hashtable.
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*/
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collections.DictionaryIterator=function(/* object */obj){
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// summary
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// return an object of type dojox.collections.DictionaryIterator
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var a=[]; // Create an indexing array
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var testObject={};
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for(var p in obj){
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if(!testObject[p]){
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a.push(obj[p]); // fill it up
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}
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}
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var position=0;
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this.element=a[position]||null;
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this.atEnd=function(){
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// summary
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// Test to see if the internal cursor has reached the end of the internal collection.
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return (position>=a.length); // bool
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};
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this.get=function(){
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// summary
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// Get the next member in the collection.
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if(this.atEnd()){
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return null; // object
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}
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this.element=a[position++];
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return this.element; // object
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};
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this.map=function(/* function */fn, /* object? */scope){
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// summary
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// Functional iteration with optional scope.
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return arr.map(a, fn, scope);
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};
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this.reset=function() {
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// summary
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// reset the internal cursor.
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position=0;
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this.element=a[position];
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};
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};
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return collections;
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});
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