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 cc.ComponentContainer = cc.Class.extend({
 26     _components:null,
 27     _owner:null,
 28 
 29     ctor:function(node){
 30         this._components = null;
 31         this._owner = node;
 32     },
 33 
 34     getComponent:function(name){
 35         if(!name)
 36             throw "cc.ComponentContainer.getComponent(): name should be non-null";
 37         name = name.trim();
 38         return this._components[name];
 39     },
 40 
 41     add:function(component){
 42         if(!component)
 43              throw "cc.ComponentContainer.add(): component should be non-null";
 44         if(component.getOwner()){
 45             cc.log("cc.ComponentContainer.add(): Component already added. It can't be added again");
 46             return false;
 47         }
 48 
 49         if(this._components == null){
 50             this._components = {};
 51             this._owner.scheduleUpdate();
 52         }
 53         var oldComponent = this._components[component.getName()];
 54         if(oldComponent){
 55             cc.log("cc.ComponentContainer.add(): Component already added. It can't be added again");
 56             return false;
 57         }
 58         component.setOwner(this._owner);
 59         this._components[component.getName()] = component;
 60         component.onEnter();
 61         return true;
 62     },
 63 
 64     remove:function(name){
 65         if(!name)
 66             throw "cc.ComponentContainer.remove(): name should be non-null";
 67         if(!this._components)
 68             return false;
 69         var locComponents = this._components;
 70         name = name.trim();
 71         var component = locComponents[name];
 72         if(component)
 73             return false;
 74         component.onExit();
 75         component.setOwner(null);
 76         delete locComponents[name];
 77         return true;
 78     },
 79 
 80     removeAll:function(){
 81         if(!this._components)
 82             return;
 83 
 84         var locComponents = this._components;
 85         for(var selKey in locComponents){
 86             var selComponent = locComponents[selKey];
 87             selComponent.onExit();
 88             selComponent.setOwner(null);
 89             delete locComponents[selKey];
 90         }
 91         this._owner.unscheduleUpdate();
 92         this._components = null;
 93     },
 94 
 95     _alloc:function(){
 96         this._components = {};
 97     },
 98 
 99     visit:function(delta){
100         if(!this._components)
101             return;
102 
103         var locComponents = this._components;
104         for(var selKey in locComponents){
105              locComponents[selKey].update(delta);
106         }
107     },
108 
109     isEmpty:function(){
110          if(!this._components)
111             return true;
112 
113         for(var selkey in this._components){
114             return false;
115         }
116         return true;
117     }
118 });
119 
120 
121