1 /****************************************************************************
  2  Copyright (c) 2010-2012 cocos2d-x.org
  3  Copyright (c) 2008-2010 Ricardo Quesada
  4  Copyright (c) 2011      Zynga Inc.
  5 
  6  http://www.cocos2d-x.org
  7 
  8  Permission is hereby granted, free of charge, to any person obtaining a copy
  9  of this software and associated documentation files (the "Software"), to deal
 10  in the Software without restriction, including without limitation the rights
 11  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 12  copies of the Software, and to permit persons to whom the Software is
 13  furnished to do so, subject to the following conditions:
 14 
 15  The above copyright notice and this permission notice shall be included in
 16  all copies or substantial portions of the Software.
 17 
 18  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 19  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 20  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 21  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 22  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 23  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 24  THE SOFTWARE.
 25  ****************************************************************************/
 26 
 27 /**
 28  * @class
 29  * @extends cc.Class
 30  */
 31 cc.Set = cc.Class.extend(/** @lends cc.Set# */{
 32     /**
 33      * Constructor
 34      * @param {cc.Set} setObject
 35      */
 36     ctor:function (setObject) {
 37         if (setObject) {
 38             this._set = [].concat(setObject._set);
 39         } else {
 40             this._set = [];
 41         }
 42     },
 43 
 44     /**
 45      * Return a copy of the cc.Set, it will copy all the elelments.
 46      * @return {cc.Set}
 47      */
 48     copy:function () {
 49         return new cc.Set(this);
 50     },
 51 
 52     /**
 53      * It is the same as copy().
 54      * @return {cc.Set}
 55      */
 56     mutableCopy:function () {
 57         return this.copy();
 58     },
 59 
 60     /**
 61      * Return the number of elements the cc.Set contains.
 62      * @return {Number}
 63      */
 64     count:function () {
 65         return this._set.length;
 66     },
 67 
 68     /**
 69      * Add a element into cc.Set, it will retain the element.
 70      * @param {object} obj
 71      */
 72     addObject:function (obj) {
 73         if(cc.ArrayContainsObject(this._set,obj))
 74             return;
 75         this._set.push(obj);
 76         //sort
 77         this._set.sort(function(a,b){return a-b;});
 78     },
 79 
 80     /**
 81      * Remove the given element, nothing todo if no element equals obj.
 82      * @param {object} obj
 83      */
 84     removeObject:function (obj) {
 85         var k = 0;
 86         for (var i = 0, n = 0; i < this._set.length; i++) {
 87             if (this._set[i] != obj) {
 88                 this._set[n++] = this._set[i];
 89                 k++;
 90             }
 91         }
 92         this._set.length = k;
 93     },
 94 
 95     /**
 96      * Return the iterator that points to the first element.
 97      * @reture Object
 98      */
 99     begin:function(){
100         if(this._set && this._set.length > 0)
101             return this._set[0];
102         return null;
103     },
104 
105     /**
106      * Return the iterator that points to the poisition after the last element.
107      * @reture Object
108      */
109     end:function(){
110         if(this._set && this._set.length > 0)
111             return this._set[this._set.length -1];
112         return null;
113     },
114 
115     /**
116      * Check if cc.Set contains a element equals obj.
117      * @param {object} obj
118      * @return {Boolean}
119      */
120     containsObject:function (obj) {
121         return cc.ArrayContainsObject(this._set,obj);
122     },
123 
124     /**
125      * Return the first element if it contains elements, or null if it doesn't contain any element.
126      * @return {object|Null}
127      */
128     anyObject:function () {
129         if (this._set && this._set.length > 0) {
130             return this._set[0];
131         } else {
132             return null;
133         }
134     },
135 
136     _set:null
137 });
138 
139 /**
140  * cc.NSMutableSet is the same as cc.Set
141  * @class
142  * @extends cc.Set
143  */
144 cc.NSMutableSet = cc.Set;
145