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