Setting the base theme color on the Spark DropDownList control in Flex 4

in DropDownList, DropDownList (Spark), baseColor, beta1

The following example shows how you can set the base theme color on a Spark DropDownList control in Flex 4 by setting the baseColor style.

Full code after the jump.

The following example(s) require Flash Player 10 and the Adobe Flex 4 SDK. To download the Adobe Flash Builder 4 beta, check out the Adobe Flash Builder 4 page on the Adobe Labs site. To download the latest build of the Flex 4 SDK, see http://opensource.adobe.com/wiki/display/flexsdk/Download+Flex+4. For instructions on using the beta Flex 4 SDK in Flex Builder 3, see "Using the beta Flex 4 SDK in Flex Builder 3".

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/06/23/
setting-the-base-theme-color-on-the-spark-dropdownlist
-control-in-flex-4/ -->
<s:Application name="Spark_DropDownList_baseColor_test"
xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:mx="library://ns.adobe.com/flex/halo"
xmlns:s="library://ns.adobe.com/flex/spark">

<mx:ApplicationControlBar width="100%" cornerRadius="0">
<mx:Form styleName="plain">
   <mx:FormItem label="baseColor:">
       <mx:ColorPicker id="colorPicker"
               selectedColor="#CCCCCC" />
   </mx:FormItem>
</mx:Form>
</mx:ApplicationControlBar>

<s:DropDownList id="dropDownList"
   baseColor="{colorPicker.selectedColor}"
   requireSelection="true"
   horizontalCenter="0"
   top="50">
<s:dataProvider>
   <s:ArrayList>
       <fx:String>(1) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
       <fx:String>(2) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
       <fx:String>(3) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
       <fx:String>(4) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
       <fx:String>(5) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
       <fx:String>(6) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
       <fx:String>(7) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
       <fx:String>(8) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
       <fx:String>(9) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
   </s:ArrayList>
</s:dataProvider>
</s:DropDownList>

</s:Application>
You can also set the baseColor style in an external .CSS file
or <Style/> block, as seen in the following example:
View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/06/23/
setting-the-base-theme-color-on-the-spark-dropdownlist-control-
in-flex-4/ -->
<s:Application name="Spark_DropDownList_baseColor_test"
 xmlns:fx="http://ns.adobe.com/mxml/2009"
 xmlns:mx="library://ns.adobe.com/flex/halo"
 xmlns:s="library://ns.adobe.com/flex/spark">

<fx:Style>
 @namespace mx "library://ns.adobe.com/flex/halo";
 @namespace s "library://ns.adobe.com/flex/spark";

 s|DropDownList {
     baseColor: red;
 }
</fx:Style>

<s:DropDownList id="dropDownList"
     requireSelection="true"
     horizontalCenter="0"
     top="50">
 <s:dataProvider>
     <s:ArrayList>

         <fx:String>(1) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
         <fx:String>(2) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
         <fx:String>(3) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
         <fx:String>(4) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>

         <fx:String>(5) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
         <fx:String>(6) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
         <fx:String>(7) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
         <fx:String>(8) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>

         <fx:String>(9) The Quick Brown Fox Jumps Over
the Lazy Dog</fx:String>
     </s:ArrayList>
 </s:dataProvider>
</s:DropDownList>

</s:Application>

Or, you can set the baseColor style using ActionScript, as seen in the

following example:

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/06/23/
setting-the-base-theme-color-on-the-spark-dropdownlist
-control-in-flex-4/ -->
<s:Application name="Spark_DropDownList_baseColor_test"
  xmlns:fx="http://ns.adobe.com/mxml/2009"
  xmlns:mx="library://ns.adobe.com/flex/halo"
  xmlns:s="library://ns.adobe.com/flex/spark">

<fx:Script>

  <![CDATA[
      import mx.events.ColorPickerEvent;

      private function colorPicker_change(evt:ColorPickerEvent):void {
          dropDownList.setStyle("baseColor", evt.color);
      }
  ]]>
</fx:Script>

<mx:ApplicationControlBar width="100%" cornerRadius="0">
  <mx:Form styleName="plain">
      <mx:FormItem label="baseColor:">
          <mx:ColorPicker id="colorPicker"
                  selectedColor="#CCCCCC"
                  change="colorPicker_change(event);" />

      </mx:FormItem>
  </mx:Form>
</mx:ApplicationControlBar>

<s:DropDownList id="dropDownList"
      requireSelection="true"
      horizontalCenter="0"
      top="50">
  <s:dataProvider>
      <s:ArrayList>

          <fx:String>(1) The Quick Brown Fox Jumps
Over the Lazy Dog</fx:String>
          <fx:String>(2) The Quick Brown Fox Jumps
Over the Lazy Dog</fx:String>
          <fx:String>(3) The Quick Brown Fox Jumps
Over the Lazy Dog</fx:String>
          <fx:String>(4) The Quick Brown Fox Jumps
Over the Lazy Dog</fx:String>

          <fx:String>(5) The Quick Brown Fox Jumps
Over the Lazy Dog</fx:String>
          <fx:String>(6) The Quick Brown Fox Jumps
Over the Lazy Dog</fx:String>
          <fx:String>(7) The Quick Brown Fox Jumps
Over the Lazy Dog</fx:String>
          <fx:String>(8) The Quick Brown Fox Jumps
Over the Lazy Dog</fx:String>

          <fx:String>(9) The Quick Brown Fox Jumps
Over the Lazy Dog</fx:String>
      </s:ArrayList>
  </s:dataProvider>
</s:DropDownList>

</s:Application>

This entry is based on a beta version of the Flex 4 SDK and
therefore is very likely to change as development of the
Flex SDK continues. The API can (and will) change causing
examples to possibly not compile innewer versions of the
Flex 4 SDK.