package custom
{
	import flash.display.Graphics;
	import flash.display.Shape;
	import flash.display.Sprite;
	import flash.events.MouseEvent;
	import flash.geom.*;
	
	import mx.controls.DataGrid;
	import mx.controls.Label;
	import mx.core.BitmapAsset;
	import mx.core.EdgeMetrics;
	import mx.core.UIComponent;
	import mx.events.ResizeEvent;

	public class ExtendedDataGrid extends DataGrid
	{
		[Embed(source="/images/headerBackground.png")]
		[Bindable]
		public var imgCls:Class;
		
		private var disabledLabel:Label;
		private var disabledBox:Shape = new Shape();
		private var _disabled:Boolean = false;
		public function ExtendedDataGrid()
		{
			super();
		}
		
		//Remove Header Roll Over Color
		override protected function mouseOverHandler(event:MouseEvent):void{
			super.mouseOverHandler(event);
			if(selectionLayer.getChildByName("headerSelection"))
				selectionLayer.removeChild(selectionLayer.getChildByName("headerSelection"));
		}
		override protected function mouseDownHandler(event:MouseEvent):void{
			super.mouseDownHandler(event);
			if(selectionLayer.getChildByName("headerSelection"))
				selectionLayer.removeChild(selectionLayer.getChildByName("headerSelection"));
		}
		//Added Background Image for header
		override protected function drawHeaderBackground(headerBG:UIComponent):void
		{
			var g:Graphics = headerBG.graphics;
			var imgObj:BitmapAsset = new imgCls() as BitmapAsset;
			g.clear();
			
			var bm:EdgeMetrics = borderMetrics;
			var adjustedWidth:Number = unscaledWidth - (bm.left + bm.right);
			maskShape.width = adjustedWidth;
			
			var hh:Number = rowInfo.length ? rowInfo[0].height : headerHeight;
			
			var vdistance:int;
			var vstart:int;
			var vstartOffset:int;
			var vdistanceOffset:int;
			
			// filling in header with embedded background image
			g.lineStyle(0, 0x000000, 0);
			g.beginBitmapFill(imgObj.bitmapData);
			g.moveTo(0, 0);
			g.lineTo(adjustedWidth, 0);
			g.lineTo(adjustedWidth, hh);
			g.lineTo(0, hh);
			g.lineStyle(0, 0x000000, 0);
			g.endFill();
		}
	 	
	 	//removed vertical lines from header 
		override protected function drawVerticalLine(s:Sprite, colIndex:int, color:uint, x:Number):void
		{
		    //draw our vertical lines
		    var g:Graphics = s.graphics;
		    if (lockedColumnCount > 0 && colIndex == lockedColumnCount - 1)
		        g.lineStyle(1, 0, 100);
		    else
		        g.lineStyle(1, color, 100);
		    g.moveTo(x, 20); // add space for header
		    g.lineTo(x, listContent.height);
		}
		
		public function set message(value:String):void{
			if (value!=""){
				disabledLabel = new Label();
				disabledLabel.text = value; 
				disabledLabel.width = 400;
				disabledLabel.name="disabledLabel";
				disabledLabel.x = width/2-70; 
				disabledLabel.y = height/2+120;	
				disabledLabel.includeInLayout = false;
				parentApplication.addChild(disabledLabel);
			}
			else{
				if (parentApplication.getChildByName("disabledLabel")) parentApplication.removeChild(disabledLabel);
			}
		}
		public function get disabled():Boolean{
			return _disabled;
		}
		public function set disabled(value:Boolean):void{
			_disabled = value;
			if (value == true){	
				disabledBox.name = "disabledBox";				
				disabledBox.graphics.clear();
				disabledBox.graphics.beginFill(0xFFFFFF,.7);
				disabledBox.graphics.drawRect(0, 25, width, height-25);
				disabledBox.graphics.endFill();
				addEventListener(ResizeEvent.RESIZE,redrawDisable);
						
				disabledLabel.name="disabledLabel";
				disabledLabel.x = width/2-70; 
				disabledLabel.y = height/2+120;	
				disabledLabel.includeInLayout = false;
				
				addChild(disabledBox);
				
				parentApplication.addChild(disabledLabel);
			}
			else{
				if (getChildByName("disabledBox")) removeChild(disabledBox);				
				if (parentApplication.getChildByName("disabledLabel")) parentApplication.removeChild(disabledLabel);
				removeEventListener(ResizeEvent.RESIZE,redrawDisable);
			}
		}
		private function redrawDisable(evt:ResizeEvent):void{
			if (getChildByName("disabledBox")) removeChild(disabledBox);				
			if (parentApplication.getChildByName("disabledLabel")) parentApplication.removeChild(disabledLabel);
			
			disabledBox.graphics.clear();
			disabledBox.graphics.beginFill(0xCCCCCC,.3);
			disabledBox.graphics.drawRect(0, 25, width, height-25);
			disabledBox.graphics.endFill();
			
			addEventListener(ResizeEvent.RESIZE,redrawDisable);
			
			disabledLabel.x = width/2-70; 
			disabledLabel.y = height/2+120;				
			disabledLabel.includeInLayout = false;
	
			addChild(disabledBox);
			parentApplication.addChild(disabledLabel);
			height == 0 ? disabledLabel.visible = false : disabledLabel.visible = true;
		}
	}
}