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 cc.s_sharedNotificationCenter = null; 28 29 cc.NotificationCenter = cc.Class.extend({ 30 ctor:function() { 31 this._observers = []; 32 }, 33 34 /** 35 * @param {cc.Class} target 36 * @param {String} selector 37 * @param {String} name 38 * @param {cc.Class} obj 39 */ 40 addObserver:function(target, selector, name, obj) { 41 if (this._observerExisted(target, name)) 42 return; 43 44 var observer = new cc.NotificationObserver(target, selector, name, obj); 45 if (!observer) 46 return; 47 48 this._observers.push(observer); 49 }, 50 51 /** 52 * @param {cc.Class} target 53 * @param {String} name 54 */ 55 removeObserver:function(target, name) { 56 for (var i = 0; i < this._observers.length; i++) { 57 var observer = this._observers[i]; 58 if (!observer) 59 continue; 60 if (observer.getName() == name && observer.getTarget() == target) { 61 this._observers.splice(i, 1); 62 return; 63 } 64 } 65 }, 66 67 /** 68 * @param {String} name 69 * @param {cc.Class} object 70 */ 71 postNotification:function(name, object) { 72 for (var i = 0; i < this._observers.length; i++) { 73 var observer = this._observers[i]; 74 if (!observer) 75 continue; 76 if (observer.getName() == name) 77 observer.performSelector(object); 78 } 79 }, 80 81 /** 82 * @param {cc.Class} target 83 * @param {String} name 84 * @return {Boolean} 85 * @private 86 */ 87 _observerExisted:function(target, name) { 88 var obj = null; 89 for (var i = 0; i < this._observers.length; i++) 90 { 91 var observer = this._observers[i]; 92 if (!observer) 93 continue; 94 if (observer.getName() == name && observer.getTarget() == target) 95 return true; 96 } 97 return false; 98 }, 99 _observers:null 100 }); 101 102 /** 103 * @return {cc.NotificationCenter} 104 */ 105 cc.NotificationCenter.getInstance = function() { 106 if (!cc.s_sharedNotificationCenter) { 107 cc.s_sharedNotificationCenter = new cc.NotificationCenter(); 108 } 109 return cc.s_sharedNotificationCenter; 110 }; 111 112 cc.NotificationObserver = cc.Class.extend({ 113 114 /** 115 * @param {cc.Class} target 116 * @param {String} selector 117 * @param {String} name 118 * @param {cc.Class} obj 119 */ 120 ctor:function (target, selector, name, obj) { 121 this._target = target; 122 this._selector = selector; 123 this._name = name; 124 this._obj = obj; 125 }, 126 127 /** 128 * @param {cc.Class} obj 129 */ 130 performSelector:function (obj) { 131 if (this._target) { 132 this._target[this._selector](obj); 133 } 134 }, 135 136 _target:null, 137 _selector:null, 138 _name:null, 139 _object:null, 140 141 /** 142 * @return {cc.Class} 143 */ 144 getTarget:function () { 145 return this._target; 146 }, 147 148 /** 149 * @return {String} 150 */ 151 getSelector:function () { 152 return this._selector; 153 }, 154 155 /** 156 * @return {String} 157 */ 158 getName:function () { 159 return this._name; 160 }, 161 162 /** 163 * @return {cc.Class} 164 */ 165 getObject:function () { 166 return this._object; 167 } 168 });