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<pre class="prettyprint lang-js"><span id='Ext-util-Queue'>/**
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</span> * An internal Queue class.
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* @private
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*/
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Ext.define('Ext.util.Queue', {
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<span id='Ext-util-Queue-method-constructor'> constructor: function() {
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</span> this.clear();
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},
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<span id='Ext-util-Queue-method-add'> add : function(obj) {
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</span> var me = this,
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key = me.getKey(obj);
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if (!me.map[key]) {
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++me.length;
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me.items.push(obj);
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me.map[key] = obj;
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}
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return obj;
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},
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<span id='Ext-util-Queue-method-clear'> /**
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</span> * Removes all items from the collection.
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*/
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clear : function(){
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var me = this,
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items = me.items;
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me.items = [];
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me.map = {};
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me.length = 0;
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return items;
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},
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<span id='Ext-util-Queue-method-contains'> contains: function (obj) {
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</span> var key = this.getKey(obj);
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return this.map.hasOwnProperty(key);
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},
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<span id='Ext-util-Queue-method-getCount'> /**
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</span> * Returns the number of items in the collection.
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* @return {Number} the number of items in the collection.
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*/
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getCount : function(){
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return this.length;
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},
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<span id='Ext-util-Queue-method-getKey'> getKey : function(obj){
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</span> return obj.id;
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},
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<span id='Ext-util-Queue-method-remove'> /**
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</span> * Remove an item from the collection.
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* @param {Object} obj The item to remove.
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* @return {Object} The item removed or false if no item was removed.
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*/
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remove : function(obj){
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var me = this,
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key = me.getKey(obj),
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items = me.items,
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index;
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if (me.map[key]) {
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index = Ext.Array.indexOf(items, obj);
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Ext.Array.erase(items, index, 1);
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delete me.map[key];
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--me.length;
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}
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return obj;
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}
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});</pre>
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