samples/themes/zen/src/zen/skins/DropDownListSkin.mxml

<?xml version="1.0" encoding="utf-8"?>
<!--

  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

-->
<!--- The default skin class for the Spark DropDownList component. 
The skin for the anchor button for a DropDownList component 
is defined by the DropDownListButtonSkin class.  

@see spark.components.DropDownList        
@see spark.skins.spark.DropDownListButtonSkin

@langversion 3.0
@playerversion Flash 10
@playerversion AIR 1.5
@productversion Flex 4
-->
<s:Skin xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" 
			 xmlns:fb="http://ns.adobe.com/flashbuilder/2009" alpha.disabled=".5"> 
	
	<!-- host component -->
	<fx:Metadata>
		<![CDATA[ 
		/** 
		* @copy spark.skins.spark.ApplicationSkin#hostComponent
		*/
		[HostComponent("spark.components.DropDownList")]
		]]>
	</fx:Metadata> 
	
	<fx:Script fb:purpose="styling">
		<![CDATA[            
			
			/**
			 * @private
			 */
			override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void
			{
				if (getStyle("borderVisible") == false)
				{
					if (border)
						border.visible = false;
					if (background)
					{
						background.left = background.top = background.right = background.bottom = 0;
					}
					if (scroller)
						scroller.minViewportInset = 0;
				}
				else
				{
					if (border)
						border.visible = true;
					if (background)
					{
						background.left = background.top = background.right = background.bottom = 1;
					}
					if (scroller)
						scroller.minViewportInset = 1;
				}
				
				if (dropShadow)
					dropShadow.visible = getStyle("dropShadowVisible");
				
				openButton.setStyle("cornerRadius", getStyle("cornerRadius"));
				
				if (borderStroke)
				{
					borderStroke.color = getStyle("borderColor");
					borderStroke.alpha = getStyle("borderAlpha");
				}
				super.updateDisplayList(unscaledWidth, unscaledHeight);
			}
		]]>
	</fx:Script>
	
	<s:states>
		<s:State name="normal" />
		<s:State name="open" />
		<s:State name="disabled" />
	</s:states>
	
	<!--- 
	The PopUpAnchor control that opens the drop-down list. 
	-->
	<s:PopUpAnchor id="popUp"  displayPopUp.normal="false" displayPopUp.open="true" includeIn="open"
				   left="0" right="0" top="0" bottom="0" itemDestructionPolicy="auto"
				   popUpPosition="below" popUpWidthMatchesAnchorWidth="true">
		
		<!--- 
		The drop down area of the skin. 
		This includes borders, background colors, scrollers, and filters. 
		-->
		<s:Group id="dropDown" maxHeight="134" minHeight="22" >
			
			<!-- drop shadow -->
			<s:RectangularDropShadow id="dropShadow" blurX="20" blurY="20" alpha="0.6" distance="5" 
									 angle="90" color="#000000" left="0" top="0" right="0" bottom="0"/>
			
			<!-- border -->
			<s:Rect id="border" left="0" right="0" top="0" bottom="0">
				<s:stroke>
					<s:SolidColorStroke id="borderStroke" weight="1" color="0x82826b" />
				</s:stroke>
			</s:Rect>
			
			<!-- fill -->
			<!---  
			Defines the appearance of drop-down list's background fill.
			-->
			<s:Rect id="background" left="1" right="1" top="1" bottom="1" >
				<s:fill>
					<!---  
					The color of the drop down's background fill.
					The default color is 0xFFFFFF.
					-->
					<s:SolidColor id="bgFill" color="0xf3f4de" />
				</s:fill>
			</s:Rect>
			
			<s:Scroller id="scroller" left="0" top="0" right="0" bottom="0" hasFocusableChildren="false" minViewportInset="1">
				<!---  
				The container for the data items in the drop-down list.
				-->
				<s:DataGroup id="dataGroup" itemRenderer="zen.skins.DefaultItemRenderer">
					<s:layout>
						<s:VerticalLayout gap="0" horizontalAlign="contentJustify"/>
					</s:layout>
				</s:DataGroup> 
			</s:Scroller>
		</s:Group>
	</s:PopUpAnchor>
	
	<!--- The anchor button used by the DropDownList. The default skin is DropDownListButtonSkin. -->
	<s:Button id="openButton" left="0" right="0" top="0" bottom="0" focusEnabled="false"
			  skinClass="zen.skins.DropDownListButtonSkin" />  
	<!--- The prompt area of the DropDownList. -->
	<s:Label id="labelDisplay" verticalAlign="middle" maxDisplayedLines="1" 
			 mouseEnabled="false" mouseChildren="false"
			 left="7" right="30" top="2" bottom="2" width="75" verticalCenter="1" color="0xEEEFC4"/> 
	
</s:Skin>