1 /**************************************************************************** 2 Copyright (c) 2011-2012 cocos2d-x.org 3 Copyright (c) 2013-2014 Chukong Technologies Inc. 4 5 http://www.cocos2d-x.org 6 7 Permission is hereby granted, free of charge, to any person obtaining a copy 8 of this software and associated documentation files (the "Software"), to deal 9 in the Software without restriction, including without limitation the rights 10 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 copies of the Software, and to permit persons to whom the Software is 12 furnished to do so, subject to the following conditions: 13 14 The above copyright notice and this permission notice shall be included in 15 all copies or substantial portions of the Software. 16 17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 20 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 THE SOFTWARE. 24 ****************************************************************************/ 25 26 /** 27 * The component container for Cocostudio, it has some components. 28 * @class 29 * @extends cc.Class 30 */ 31 cc.ComponentContainer = cc.Class.extend(/** @lends cc.ComponentContainer# */{ 32 _components:null, 33 _owner:null, 34 35 /** 36 * Construction of cc.ComponentContainer 37 * @param node 38 */ 39 ctor:function(node){ 40 this._components = null; 41 this._owner = node; 42 }, 43 44 /** 45 * Gets component by name. 46 * @param name 47 * @returns {*} 48 */ 49 getComponent:function(name){ 50 if(!name) 51 throw "cc.ComponentContainer.getComponent(): name should be non-null"; 52 name = name.trim(); 53 return this._components[name]; 54 }, 55 56 /** 57 * Adds a component to container 58 * @param {cc.Component} component 59 * @returns {boolean} 60 */ 61 add:function(component){ 62 if(!component) 63 throw "cc.ComponentContainer.add(): component should be non-null"; 64 if(component.getOwner()){ 65 cc.log("cc.ComponentContainer.add(): Component already added. It can't be added again"); 66 return false; 67 } 68 69 if(this._components == null){ 70 this._components = {}; 71 this._owner.scheduleUpdate(); 72 } 73 var oldComponent = this._components[component.getName()]; 74 if(oldComponent){ 75 cc.log("cc.ComponentContainer.add(): Component already added. It can't be added again"); 76 return false; 77 } 78 component.setOwner(this._owner); 79 this._components[component.getName()] = component; 80 component.onEnter(); 81 return true; 82 }, 83 84 /** 85 * Removes component from container by name or component object. 86 * @param {String|cc.Component} name component name or component object. 87 * @returns {boolean} 88 */ 89 remove:function(name){ 90 if(!name) 91 throw "cc.ComponentContainer.remove(): name should be non-null"; 92 if(!this._components) 93 return false; 94 if(name instanceof cc.Component) 95 return this._removeByComponent(name); 96 else { 97 name = name.trim(); 98 return this._removeByComponent(this._components[name]); 99 } 100 }, 101 102 _removeByComponent:function(component){ 103 if(component) 104 return false; 105 component.onExit(); 106 component.setOwner(null); 107 delete this._components[component.getName()]; 108 return true; 109 }, 110 111 /** 112 * Removes all components of container. 113 */ 114 removeAll:function(){ 115 if(!this._components) 116 return; 117 var locComponents = this._components; 118 for(var selKey in locComponents){ 119 var selComponent = locComponents[selKey]; 120 selComponent.onExit(); 121 selComponent.setOwner(null); 122 delete locComponents[selKey]; 123 } 124 this._owner.unscheduleUpdate(); 125 this._components = null; 126 }, 127 128 _alloc:function(){ 129 this._components = {}; 130 }, 131 132 /** 133 * Visit callback by director. it calls every frame. 134 * @param {Number} delta 135 */ 136 visit:function(delta){ 137 if(!this._components) 138 return; 139 140 var locComponents = this._components; 141 for(var selKey in locComponents) 142 locComponents[selKey].update(delta); 143 }, 144 145 /** 146 * Returns the container whether is empty. 147 * @returns {boolean} 148 */ 149 isEmpty: function () { 150 if (!this._components) 151 return true; 152 return this._components.length == 0; 153 } 154 }); 155 156 157