Setting the base theme color on a Halo Accordion container in Flex 4

By Peter deHaan On August 12, 2009 · 3 Comments

The following example shows how you can set the base theme color on a Halo Accordion container 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 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/2009/08/12/setting-the-base-theme-color-on-a-halo-accordion-container-in-flex-4/ -->
<s:Application name="Halo_Accordion_baseColor_test"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/halo">
 
    <fx:Style>
        @namespace s "library://ns.adobe.com/flex/spark";
        @namespace mx "library://ns.adobe.com/flex/halo";
 
        mx|VBox {
            paddingLeft: 10;
            paddingRight: 10;
            paddingTop: 10;
            paddingBottom: 10;
        }
    </fx:Style>
 
    <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>
 
    <mx:Accordion id="accordion"
            baseColor="{colorPicker.selectedColor}"
            width="500" height="200"
            horizontalCenter="0" verticalCenter="0">
        <mx:VBox label="Button:">
            <s:Button label="Spark Button" />
            <mx:Button label="Halo Button" />
        </mx:VBox>
        <mx:VBox label="ButtonBar:">
            <s:ButtonBar>
                <s:dataProvider>
                    <s:ArrayList source="[Spark,One,Two,Three,Four,Five]" />
                </s:dataProvider>
            </s:ButtonBar>
            <mx:ButtonBar dataProvider="[Halo,One,Two,Three,Four,Five]" />
        </mx:VBox>
        <mx:VBox label="CheckBox:">
            <s:CheckBox label="Spark CheckBox" />
            <mx:CheckBox label="Halo CheckBox" />
        </mx:VBox>
        <mx:VBox label="ComboBox/DropDownList:">
            <s:DropDownList>
                <s:dataProvider>
                    <s:ArrayList source="[Spark,One,Two,Three,Four,Five]" />
                </s:dataProvider>
            </s:DropDownList>
            <mx:ComboBox dataProvider="[Halo,One,Two,Three,Four,Five]" />
        </mx:VBox>
        <mx:VBox label="TextInput:">
            <s:TextInput text="Spark TextInput" />
            <mx:TextInput text="Halo TextInput" />
        </mx:VBox>
    </mx:Accordion>
 
</s:Application>

View source is enabled in the following example.


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

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/08/12/setting-the-base-theme-color-on-a-halo-accordion-container-in-flex-4/ -->
<s:Application name="Halo_Accordion_baseColor_test"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/halo">
 
    <fx:Style>
        @namespace s "library://ns.adobe.com/flex/spark";
        @namespace mx "library://ns.adobe.com/flex/halo";
 
        mx|Accordion {
            baseColor: haloBlue;
        }
 
        mx|VBox {
            paddingLeft: 10;
            paddingRight: 10;
            paddingTop: 10;
            paddingBottom: 10;
        }
    </fx:Style>
 
    <mx:Accordion id="accordion"
            width="500" height="200"
            horizontalCenter="0" verticalCenter="0">
        <mx:VBox label="Button:">
            <s:Button label="Spark Button" />
            <mx:Button label="Halo Button" />
        </mx:VBox>
        <mx:VBox label="ButtonBar:">
            <s:ButtonBar>
                <s:dataProvider>
                    <s:ArrayList source="[Spark,One,Two,Three,Four,Five]" />
                </s:dataProvider>
            </s:ButtonBar>
            <mx:ButtonBar dataProvider="[Halo,One,Two,Three,Four,Five]" />
        </mx:VBox>
        <mx:VBox label="CheckBox:">
            <s:CheckBox label="Spark CheckBox" />
            <mx:CheckBox label="Halo CheckBox" />
        </mx:VBox>
        <mx:VBox label="ComboBox/DropDownList:">
            <s:DropDownList>
                <s:dataProvider>
                    <s:ArrayList source="[Spark,One,Two,Three,Four,Five]" />
                </s:dataProvider>
            </s:DropDownList>
            <mx:ComboBox dataProvider="[Halo,One,Two,Three,Four,Five]" />
        </mx:VBox>
        <mx:VBox label="TextInput:">
            <s:TextInput text="Spark TextInput" />
            <mx:TextInput text="Halo TextInput" />
        </mx:VBox>
    </mx:Accordion>
 
</s:Application>

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

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/08/12/setting-the-base-theme-color-on-a-halo-accordion-container-in-flex-4/ -->
<s:Application name="Halo_Accordion_baseColor_test"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/halo">
 
    <fx:Script>
        <![CDATA[
            import mx.events.ColorPickerEvent;
 
            protected function colorPicker_change(evt:ColorPickerEvent):void {
                accordion.setStyle("baseColor", evt.color);
            }
        ]]>
    </fx:Script>
 
    <fx:Style>
        @namespace s "library://ns.adobe.com/flex/spark";
        @namespace mx "library://ns.adobe.com/flex/halo";
 
        mx|VBox {
            paddingLeft: 10;
            paddingRight: 10;
            paddingTop: 10;
            paddingBottom: 10;
        }
    </fx:Style>
 
    <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>
 
    <mx:Accordion id="accordion"
            width="500" height="200"
            horizontalCenter="0" verticalCenter="0">
        <mx:VBox label="Button:">
            <s:Button label="Spark Button" />
            <mx:Button label="Halo Button" />
        </mx:VBox>
        <mx:VBox label="ButtonBar:">
            <s:ButtonBar>
                <s:dataProvider>
                    <s:ArrayList source="[Spark,One,Two,Three,Four,Five]" />
                </s:dataProvider>
            </s:ButtonBar>
            <mx:ButtonBar dataProvider="[Halo,One,Two,Three,Four,Five]" />
        </mx:VBox>
        <mx:VBox label="CheckBox:">
            <s:CheckBox label="Spark CheckBox" />
            <mx:CheckBox label="Halo CheckBox" />
        </mx:VBox>
        <mx:VBox label="ComboBox/DropDownList:">
            <s:DropDownList>
                <s:dataProvider>
                    <s:ArrayList source="[Spark,One,Two,Three,Four,Five]" />
                </s:dataProvider>
            </s:DropDownList>
            <mx:ComboBox dataProvider="[Halo,One,Two,Three,Four,Five]" />
        </mx:VBox>
        <mx:VBox label="TextInput:">
            <s:TextInput text="Spark TextInput" />
            <mx:TextInput text="Halo TextInput" />
        </mx:VBox>
    </mx:Accordion>
 
</s:Application>

Since the baseColor style inherits, you can see in the previous examples that not only is the Halo Accordion container itself changing base colors, but also the child components.

The following example shows how you can only set the Accordion header base color by setting the headerStyleName and baseColor styles:

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/08/12/setting-the-base-theme-color-on-a-halo-accordion-container-in-flex-4/ -->
<s:Application name="Halo_Accordion_baseColor_test"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/halo">
 
    <fx:Style>
        @namespace s "library://ns.adobe.com/flex/spark";
        @namespace mx "library://ns.adobe.com/flex/halo";
 
        .headerStylez {
        }
 
        mx|Accordion {
            headerStyleName: headerStylez;
        }
 
        mx|VBox {
            paddingLeft: 10;
            paddingRight: 10;
            paddingTop: 10;
            paddingBottom: 10;
        }
    </fx:Style>
 
    <fx:Script>
        <![CDATA[
            import mx.events.ColorPickerEvent;
 
            protected function colorPicker_change(evt:ColorPickerEvent):void {
                var stylez:CSSStyleDeclaration = StyleManager.getStyleDeclaration(".headerStylez");
                stylez.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>
 
    <mx:Accordion id="accordion"
            width="500" height="200"
            horizontalCenter="0" verticalCenter="0">
        <mx:VBox label="Button:">
            <s:Button label="Spark Button" />
            <mx:Button label="Halo Button" />
        </mx:VBox>
        <mx:VBox label="ButtonBar:">
            <s:ButtonBar>
                <s:dataProvider>
                    <s:ArrayList source="[Spark,One,Two,Three,Four,Five]" />
                </s:dataProvider>
            </s:ButtonBar>
            <mx:ButtonBar dataProvider="[Halo,One,Two,Three,Four,Five]" />
        </mx:VBox>
        <mx:VBox label="CheckBox:">
            <s:CheckBox label="Spark CheckBox" />
            <mx:CheckBox label="Halo CheckBox" />
        </mx:VBox>
        <mx:VBox label="ComboBox/DropDownList:">
            <s:DropDownList>
                <s:dataProvider>
                    <s:ArrayList source="[Spark,One,Two,Three,Four,Five]" />
                </s:dataProvider>
            </s:DropDownList>
            <mx:ComboBox dataProvider="[Halo,One,Two,Three,Four,Five]" />
        </mx:VBox>
        <mx:VBox label="TextInput:">
            <s:TextInput text="Spark TextInput" />
            <mx:TextInput text="Halo TextInput" />
        </mx:VBox>
    </mx:Accordion>
 
</s:Application>

View source is enabled in the following example.

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

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/08/12/setting-the-base-theme-color-on-a-halo-accordion-container-in-flex-4/ -->
<s:Application name="Halo_Accordion_baseColor_test"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/halo">
 
    <fx:Style>
        @namespace s "library://ns.adobe.com/flex/spark";
        @namespace mx "library://ns.adobe.com/flex/halo";
 
        .headerStylez {
            baseColor: haloBlue;
        }
 
        mx|VBox {
            paddingLeft: 10;
            paddingRight: 10;
            paddingTop: 10;
            paddingBottom: 10;
        }
    </fx:Style>
 
    <mx:Accordion id="accordion"
            headerStyleName="headerStylez" 
            width="500" height="200"
            horizontalCenter="0" verticalCenter="0">
        <mx:VBox label="Button:">
            <s:Button label="Spark Button" />
            <mx:Button label="Halo Button" />
        </mx:VBox>
        <mx:VBox label="ButtonBar:">
            <s:ButtonBar>
                <s:dataProvider>
                    <s:ArrayList source="[Spark,One,Two,Three,Four,Five]" />
                </s:dataProvider>
            </s:ButtonBar>
            <mx:ButtonBar dataProvider="[Halo,One,Two,Three,Four,Five]" />
        </mx:VBox>
        <mx:VBox label="CheckBox:">
            <s:CheckBox label="Spark CheckBox" />
            <mx:CheckBox label="Halo CheckBox" />
        </mx:VBox>
        <mx:VBox label="ComboBox/DropDownList:">
            <s:DropDownList>
                <s:dataProvider>
                    <s:ArrayList source="[Spark,One,Two,Three,Four,Five]" />
                </s:dataProvider>
            </s:DropDownList>
            <mx:ComboBox dataProvider="[Halo,One,Two,Three,Four,Five]" />
        </mx:VBox>
        <mx:VBox label="TextInput:">
            <s:TextInput text="Spark TextInput" />
            <mx:TextInput text="Halo TextInput" />
        </mx:VBox>
    </mx:Accordion>
 
</s:Application>

Or, you can set both the headerStyleName and baseColor styles in an external .CSS file or <Script/> block, as seen in the following example:

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/08/12/setting-the-base-theme-color-on-a-halo-accordion-container-in-flex-4/ -->
<s:Application name="Halo_Accordion_baseColor_test"
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/halo">
 
    <fx:Style>
        @namespace s "library://ns.adobe.com/flex/spark";
        @namespace mx "library://ns.adobe.com/flex/halo";
 
        .headerStylez {
            baseColor: haloBlue;
        }
 
        mx|Accordion {
            headerStyleName: headerStylez;
        }
 
        mx|VBox {
            paddingLeft: 10;
            paddingRight: 10;
            paddingTop: 10;
            paddingBottom: 10;
        }
    </fx:Style>
 
    <mx:Accordion id="accordion"
            width="500" height="200"
            horizontalCenter="0" verticalCenter="0">
        <mx:VBox label="Button:">
            <s:Button label="Spark Button" />
            <mx:Button label="Halo Button" />
        </mx:VBox>
        <mx:VBox label="ButtonBar:">
            <s:ButtonBar>
                <s:dataProvider>
                    <s:ArrayList source="[Spark,One,Two,Three,Four,Five]" />
                </s:dataProvider>
            </s:ButtonBar>
            <mx:ButtonBar dataProvider="[Halo,One,Two,Three,Four,Five]" />
        </mx:VBox>
        <mx:VBox label="CheckBox:">
            <s:CheckBox label="Spark CheckBox" />
            <mx:CheckBox label="Halo CheckBox" />
        </mx:VBox>
        <mx:VBox label="ComboBox/DropDownList:">
            <s:DropDownList>
                <s:dataProvider>
                    <s:ArrayList source="[Spark,One,Two,Three,Four,Five]" />
                </s:dataProvider>
            </s:DropDownList>
            <mx:ComboBox dataProvider="[Halo,One,Two,Three,Four,Five]" />
        </mx:VBox>
        <mx:VBox label="TextInput:">
            <s:TextInput text="Spark TextInput" />
            <mx:TextInput text="Halo TextInput" />
        </mx:VBox>
    </mx:Accordion>
 
</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.

 
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About The Author

Peter deHaan

Peter deHaan currently works for Adobe on the Flex SDK QA team. While not working on Flex, Flash, and ColdFusion applications, Peter enjoys making up bios and writing in 3rd person. Peter's rarely updated blog can be found at blogs.adobe.com/pdehaan/, actionscriptexamples.com, airexamples.com, and coldfusionexamples.com.

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3 Responses to Setting the base theme color on a Halo Accordion container in Flex 4

  1. Oscar says:
    August 12, 2009 at 8:16 am

    Hi Peter,
    I have no idea how to reach you otherwise, but I wanted to ask if you could give an example on how to use Drag & Drop with Spark Panels within a Tile Container?
    I’m a beginner with Flex, so I thought I’d start using Flex 4 and spend my time more efficiently this way.
    Eventually, I wanted to create example (Flex 3) with Flex 4.

    By the way, are/were you Dutch? deHaan = Dutch surname.

    Reply
    • Peter deHaan says:
      August 13, 2009 at 4:30 pm

      Oscar,

      I don’t have any experience with Drag/Drop in Spark, but I can take a look at it and consider adding an example (if it isn’t too difficult for me to figure out).

      As for the name, yeah, it’s Dutch. I’m not Dutch, but my grandfather came over a long, long time ago. Now I’m stuck with the name. ;)

      Peter

      Reply

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