Setting the label color on a disabled ComboBox control in Flex

The following example shows how you can set the label color on a disabled Flex ComboBox control by setting the disabledColor style.

Full code after the jump.

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/07/19/setting-the-label-color-on-a-disabled-combobox-control-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="top"
        backgroundColor="white">

    <mx:Array id="arr">
        <mx:Object label="One" />
        <mx:Object label="Two" />
        <mx:Object label="Three" />
        <mx:Object label="Four" />
        <mx:Object label="Five" />
        <mx:Object label="Six" />
        <mx:Object label="Seven" />
        <mx:Object label="Eight" />
        <mx:Object label="Nine" />
        <mx:Object label="Ten" />
    </mx:Array>

    <mx:ApplicationControlBar dock="true">
        <mx:Form styleName="plain">
            <mx:FormItem label="disabledColor:">
                <mx:ColorPicker id="colorPicker"
                        selectedColor="#999999" />
            </mx:FormItem>
            <mx:FormItem label="enabled:">
                <mx:CheckBox id="checkBox"
                        selected="true" />
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>

    <mx:ComboBox id="comboBox"
            dataProvider="{arr}"
            enabled="{checkBox.selected}"
            disabledColor="{colorPicker.selectedColor}" />

</mx:Application>

View source is enabled in the following example.

You can also set the disabledColor in an external .CSS file or <mx:Style /> block, as seen in the following example:

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/07/19/setting-the-label-color-on-a-disabled-combobox-control-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="top"
        backgroundColor="white">

    <mx:Style>
        ComboBox {
            disabledColor: red;
        }
    </mx:Style>

    <mx:Array id="arr">
        <mx:Object label="One" />
        <mx:Object label="Two" />
        <mx:Object label="Three" />
        <mx:Object label="Four" />
        <mx:Object label="Five" />
        <mx:Object label="Six" />
        <mx:Object label="Seven" />
        <mx:Object label="Eight" />
        <mx:Object label="Nine" />
        <mx:Object label="Ten" />
    </mx:Array>

    <mx:ApplicationControlBar dock="true">
        <mx:Form styleName="plain">
            <mx:FormItem label="enabled:">
                <mx:CheckBox id="checkBox"
                        selected="true" />
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>

    <mx:ComboBox id="comboBox"
            dataProvider="{arr}"
            enabled="{checkBox.selected}" />

</mx:Application>

Or, you can set the disabledColor style using ActionScript, as seen in the following example:

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/07/19/setting-the-label-color-on-a-disabled-combobox-control-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="top"
        backgroundColor="white">

    <mx:Script>
        <![CDATA[
            import mx.events.ColorPickerEvent;

            private function colorPicker_change(evt:ColorPickerEvent):void {
                comboBox.setStyle("disabledColor", evt.color);
            }
        ]]>
    </mx:Script>

    <mx:Array id="arr">
        <mx:Object label="One" />
        <mx:Object label="Two" />
        <mx:Object label="Three" />
        <mx:Object label="Four" />
        <mx:Object label="Five" />
        <mx:Object label="Six" />
        <mx:Object label="Seven" />
        <mx:Object label="Eight" />
        <mx:Object label="Nine" />
        <mx:Object label="Ten" />
    </mx:Array>

    <mx:ApplicationControlBar dock="true">
        <mx:Form styleName="plain">
            <mx:FormItem label="disabledColor:">
                <mx:ColorPicker id="colorPicker"
                        selectedColor="#999999"
                        change="colorPicker_change(event);" />
            </mx:FormItem>
            <mx:FormItem label="enabled:">
                <mx:CheckBox id="checkBox"
                        selected="true" />
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>

    <mx:ComboBox id="comboBox"
            dataProvider="{arr}"
            enabled="{checkBox.selected}" />

</mx:Application>

3 thoughts on “Setting the label color on a disabled ComboBox control in Flex

  1. Hi Peter,

    Is there a way to target the ComboBox label on rollover? I’d like to change the color of the label on rollover/rollout or mouseover/mouseout.

    Thanks in advance.

    1. @Jake,

      Do you mean the ComboBox button or the ComboBox drop down list? For the ComboBox drop down list there is a textRollOver style:

      <?xml version="1.0" encoding="utf-8"?>
      <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
       
          <mx:ComboBox id="comboBox"
                  dataProvider="[The,Quick,Brown,Fox,Jumps,Over,The,Lazy,Dog]"
                  color="red"
                  textRollOverColor="purple"/>
       
      </mx:Application>

      Peter

    2. Actually, if you want to change the ComboBox button color on roll over, this may do the trick:

      <?xml version="1.0" encoding="utf-8"?>
      <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
       
          <mx:ComboBox id="comboBox"
                  dataProvider="[The,Quick,Brown,Fox,Jumps,Over,The,Lazy,Dog]"
                  rollOver="comboBox.setStyle('color', 'red');"
                  rollOut="comboBox.setStyle('color', 'black');"/>
       
      </mx:Application>

      Peter

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