//  Copyright (c) 2009 Cloud.tv
//  
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//  
//  The above copyright notice and this permission notice shall be included in
//  all copies or substantial portions of the Software.
//  
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
//  THE SOFTWARE.

package cloudtv.components
{
  import mx.controls.Tree;

  public class IconTree extends Tree
  {
    public function IconTree()
    {
      super();
    }

     /**
     *  @private
     */
    override public function itemToIcon(item:Object):Class
    {
        if (item == null)
        {
            return null;
        }

        var icon:*;
        var open:Boolean = isItemOpen(item);
        var branch:Boolean = isBranch(item);
        var uid:String = itemToUID(item);

        //first lets check the component
        var iconClass:Class =
                itemIcons && itemIcons[uid] ?
                itemIcons[uid][open ? "iconID2" : "iconID"] :
                null;
        
        // put precident of object and xml over
        if (item is XML){
          try{
           if(item[iconField].length() != 0){
             icon = String(item[iconField]);
            }
          } catch(e:Error) {}
        }else if (item is Object){
          try{
            if(iconField && item[iconField]){
              icon = item[iconField];
            }
            else if(item.icon){
              icon = item.icon;
            }
          }  catch(e:Error) {}
        }
        
        if(icon == null){
          if (iconClass){
            return iconClass;
          }else if (iconFunction != null){
            return iconFunction(item)
          }else if (branch){
            return getStyle(open ? "folderOpenIcon" : "folderClosedIcon");
          }
          else { /* xml object check used to bed here */ }
        }
        

        //set default leaf icon if nothing else was found
        if (icon == null)
          icon = getStyle("defaultLeafIcon");

        //convert to the correct type and class
        if (icon is Class){
            return icon;
        }
        else if (icon is String){
            iconClass = Class(systemManager.getDefinitionByName(String(icon)));
            if (iconClass)
                return iconClass;

            return document[icon];
        }
        else{
            return Class(icon);
        }

    }
    
    /**
    *   @private
     *  Returns <code>true</code> if the specified item is a branch item. The Tree 
     *  control delegates to the IDataDescriptor to determine if an item is a branch.
     *  @param item Item to inspect.
     *  @return True if a branch, false if not.
     *
     */
    private function isBranch(item:Object):Boolean
    {
        if (item != null)
            return this.dataDescriptor.isBranch(item, iterator.view);

        return false;
    }    
  }
}