In a previous example, “Setting the border alpha on a Spark DropDownList control in Flex 4″, we saw how you could set the border alpha on a Spark DropDownList control’s popup menu in Flex 4 by setting the borderAlpha style.
The following example shows how you can set the border color on a Spark DropDownList control’s popup menu in Flex 4 by setting the borderColor style.
The following example(s) require Flash Player 10 and the Adobe Flex 4 SDK. To download the Adobe Flash Builder 4 trial, see http://www.adobe.com/products/flex/. To download the latest nightly build of the Flex 4 SDK, see http://opensource.adobe.com/wiki/display/flexsdk/Download+Flex+4.
For more information on getting started with Flex 4 and Flash Builder 4, see the official Adobe Flex Team blog.
<?xml version="1.0" encoding="utf-8"?> <!-- http://blog.flexexamples.com/2010/03/20/setting-the-border-color-on-a-spark-dropdownlist-control-in-flex-4/ --> <s:Application name="Spark_DropDownList_borderColor_test" xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx"> <s:controlBarContent> <mx:Form> <mx:FormItem label="borderColor:"> <mx:ColorPicker id="clrPckr" change="ddl.openDropDown();" /> </mx:FormItem> </mx:Form> </s:controlBarContent> <s:DropDownList id="ddl" borderColor="{clrPckr.selectedColor}" requireSelection="true" dropShadowVisible="false" horizontalCenter="0" top="20"> <s:dataProvider> <s:ArrayList source="[One,Two,Three,Four,Five,Six,Seven]" /> </s:dataProvider> </s:DropDownList> </s:Application>
View source is enabled in the following example.
You can also set the borderColor style in an external .CSS file or a <Style> block, as seen in the following example:
<?xml version="1.0" encoding="utf-8"?> <!-- http://blog.flexexamples.com/2010/03/20/setting-the-border-color-on-a-spark-dropdownlist-control-in-flex-4/ --> <s:Application name="Spark_DropDownList_borderColor_test" xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx"> <fx:Style> @namespace s "library://ns.adobe.com/flex/spark"; @namespace mx "library://ns.adobe.com/flex/mx"; s|DropDownList { borderColor: haloOrange; } </fx:Style> <s:DropDownList id="ddl" requireSelection="true" dropShadowVisible="false" horizontalCenter="0" top="20" creationComplete="ddl.openDropDown();"> <s:dataProvider> <s:ArrayList source="[One,Two,Three,Four,Five,Six,Seven]" /> </s:dataProvider> </s:DropDownList> </s:Application>
Or you can set the borderColor style using ActionScript, as seen in the following example:
<?xml version="1.0" encoding="utf-8"?> <!-- http://blog.flexexamples.com/2010/03/20/setting-the-border-color-on-a-spark-dropdownlist-control-in-flex-4/ --> <s:Application name="Spark_DropDownList_borderColor_test" xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx"> <s:controlBarContent> <mx:Form> <mx:FormItem label="borderColor:"> <mx:ColorPicker id="clrPckr" change="clrPckr_changeHandler(event);"/> </mx:FormItem> </mx:Form> </s:controlBarContent> <fx:Script> <![CDATA[ import mx.events.ColorPickerEvent; protected function clrPckr_changeHandler(evt:ColorPickerEvent):void { ddl.setStyle("borderColor", evt.color); ddl.openDropDown(); } ]]> </fx:Script> <s:DropDownList id="ddl" requireSelection="true" dropShadowVisible="false" horizontalCenter="0" top="20"> <s:dataProvider> <s:ArrayList source="[One,Two,Three,Four,Five,Six,Seven]" /> </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 in newer versions of the Flex 4 SDK.
