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 //todo maybe need change here
 27 
 28 
 29 /**
 30  * ccui.helper is the singleton object which is the Helper object contains some functions for seek widget
 31  * @class
 32  * @name ccui.helper
 33  */
 34 ccui.helper = {
 35 	/**
 36 	 * Finds a widget whose tag equals to param tag from root widget.
 37 	 * @param {ccui.Widget} root
 38 	 * @param {number} tag
 39 	 * @returns {ccui.Widget}
 40 	 */
 41 	seekWidgetByTag: function (root, tag) {
 42 	    if (!root)
 43 	        return null;
 44 	    if (root.getTag() === tag)
 45 	        return root;
 46 
 47 	    var arrayRootChildren = root.getChildren();
 48 	    var length = arrayRootChildren.length;
 49 	    for (var i = 0; i < length; i++) {
 50 	        var child = arrayRootChildren[i];
 51 	        var res = ccui.helper.seekWidgetByTag(child, tag);
 52 	        if (res !== null)
 53 	            return res;
 54 	    }
 55 	    return null;
 56 	},
 57 
 58 	/**
 59 	 * Finds a widget whose name equals to param name from root widget.
 60 	 * @param {ccui.Widget} root
 61 	 * @param {String} name
 62 	 * @returns {ccui.Widget}
 63 	 */
 64 	seekWidgetByName: function (root, name) {
 65 	    if (!root)
 66 	        return null;
 67 	    if (root.getName() === name)
 68 	        return root;
 69 	    var arrayRootChildren = root.getChildren();
 70 	    var length = arrayRootChildren.length;
 71 	    for (var i = 0; i < length; i++) {
 72 	        var child = arrayRootChildren[i];
 73 	        var res = ccui.helper.seekWidgetByName(child, name);
 74 	        if (res !== null)
 75 	            return res;
 76 	    }
 77 	    return null;
 78 	},
 79 
 80 	/**
 81 	 * Finds a widget whose name equals to param name from root widget.
 82 	 * RelativeLayout will call this method to find the widget witch is needed.
 83 	 * @param {ccui.Widget} root
 84 	 * @param {String} name
 85 	 * @returns {ccui.Widget}
 86 	 */
 87 	seekWidgetByRelativeName: function (root, name) {
 88 	    if (!root)
 89 	        return null;
 90 	    var arrayRootChildren = root.getChildren();
 91 	    var length = arrayRootChildren.length;
 92 	    for (var i = 0; i < length; i++) {
 93 	        var child = arrayRootChildren[i];
 94 	        var layoutParameter = child.getLayoutParameter(ccui.LayoutParameter.RELATIVE);
 95 	        if (layoutParameter && layoutParameter.getRelativeName() === name)
 96 	            return child;
 97 	    }
 98 	    return null;
 99 	},
100 
101     /**
102      * Finds a widget whose action tag equals to param name from root widget.
103      * @param {ccui.Widget} root
104      * @param {Number} tag
105      * @returns {ccui.Widget}
106      */
107 	seekActionWidgetByActionTag: function (root, tag) {
108 	    if (!root)
109 	        return null;
110 	    if (root.getActionTag() === tag)
111 	        return root;
112 	    var arrayRootChildren = root.getChildren();
113 	    for (var i = 0; i < arrayRootChildren.length; i++) {
114 	        var child = arrayRootChildren[i];
115 	        var res = ccui.helper.seekActionWidgetByActionTag(child, tag);
116 	        if (res !== null)
117 	            return res;
118 	    }
119 	    return null;
120 	} ,
121 
122     _activeLayout: true,
123     /**
124      * Refresh object and it's children layout state
125      * @param {cc.Node} rootNode
126      */
127     doLayout: function(rootNode){
128         if(!this._activeLayout)
129             return;
130         var children = rootNode.getChildren(), node;
131         for(var i = 0, len = children.length;i < len; i++) {
132             node = children[i];
133             var com = node.getComponent(ccui.LayoutComponent.NAME);
134             var parent = node.getParent();
135             if (null != com && null !== parent && com.refreshLayout)
136                 com.refreshLayout();
137         }
138     },
139 
140     changeLayoutSystemActiveState: function(active){
141         this._activeLayout = active;
142     },
143 
144     /**
145      * restrict capInsetSize, when the capInsets' width is larger than the textureSize, it will restrict to 0,   <br/>
146      * the height goes the same way as width.
147      * @param {cc.Rect} capInsets
148      * @param {cc.Size} textureSize
149      */
150     restrictCapInsetRect: function (capInsets, textureSize) {
151         var x = capInsets.x, y = capInsets.y;
152         var width = capInsets.width, height = capInsets.height;
153 
154         if (textureSize.width < width) {
155             x = 0.0;
156             width = 0.0;
157         }
158         if (textureSize.height < height) {
159             y = 0.0;
160             height = 0.0;
161         }
162         return cc.rect(x, y, width, height);
163     }
164 };
165