Setting the selected item on the FxButtonBar control in Flex Gumbo

In a previous example, “Setting the selected index on the FxButtonBar control in Flex Gumbo”, we saw how you could set the selected index on a Flex Gumbo FxButtonBar control by setting the selectedIndex property.

The following example shows how you can set the selected item on a Flex Gumbo FxButtonBar control by setting the selectedItem property.

Full code after the jump.

To use the following code, you must have Flash Player 10 and a Flex Gumbo SDK installed in your Flex Builder 3. For more information on downloading and installing the Gumbo SDK into Flex Builder 3, see “Using the beta Gumbo SDK in Flex Builder 3”.

View MXML

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/02/21/setting-the-selected-item-on-the-fxbuttonbar-control-in-flex-gumbo/ -->
<Application name="FxButtonBar_selectedItem_test"
        xmlns="http://ns.adobe.com/mxml/2009"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

    <Script>
        import mx.utils.ObjectUtil;
    </Script>

    <ApplicationControlBar dock="true">
        <Form styleName="plain">
            <FormItem label="requiresSelection:">
                <FxCheckBox id="checkBox" />
            </FormItem>
            <FormItem label="selectedItem:">
                <Label text="{ObjectUtil.toString(btnBar.selectedItem)}" />
            </FormItem>
            <FormItem direction="horizontal">
                <FxButton label="Select none"
                        fontWeight="bold"
                        click="btnBar.selectedItem = null;" />
                <FxButton label="Select 'One'"
                        click="btnBar.selectedItem = 'One';" />
                <FxButton label="Select 'Two'"
                        click="btnBar.selectedItem = 'Two';" />
                <FxButton label="Select 'Three'"
                        click="btnBar.selectedItem = 'Three';" />
            </FormItem>
        </Form>
    </ApplicationControlBar>

    <FxButtonBar id="btnBar"
            requiresSelection="{checkBox.selected}">
        <dataProvider>
            <ArrayCollection source="[One,Two,Three,Four,Five,Six]" />
        </dataProvider>
    </FxButtonBar>

</Application>

This entry is based on a beta version of the Flex Gumbo 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 Gumbo SDK.