flex – 如何让屏幕阅读器读出itemRenderer组件

我们正在调整我们的Intranet Web应用程序以符合WCAG 2.0标准.该应用程序具有复杂控件的列表,但我无法读取屏幕读取列表中的任何内容,但labelDisplay或whats由列表的labelFunction返回.

下面是一个简单的例子,屏幕阅读器和listBox读取“labelOne”,列表中每个项目的labelFunction结果.

<?xml version="1.0"?>
<s:Application
        xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx"
        xmlns:access="accessibility.*">
    <fx:Script><![CDATA[
        private function listLabelFunction(item : Object) : String {
            return item.one;
        }
        ]]></fx:Script>
    <s:VGroup>
        <access:Label id="labelOne" text="This text will be read out!"/>

        <s:List hasFocusableChildren="true" labelFunction="listLabelFunction">
            <s:itemRenderer>
                <fx:Component>
                    <s:ItemRenderer>
                        <fx:Script><![CDATA[
                            import mx.controls.Alert;
                            ]]></fx:Script>
                        <s:HGroup id="hGroup">
                            <access:Label id="labelDisplay" text="{data.one}"/>
                            <access:Label id="labelTwo" text="{data.two}"/>
                            <s:Button id="button" label="{data.button}" click="Alert.show('Ok!')"/>
                        </s:HGroup>
                    </s:ItemRenderer>
                </fx:Component>
            </s:itemRenderer>
            <s:dataProvider>
                <mx:ArrayCollection>
                    <fx:Object one="one" two="two" button="ok"/>
                    <fx:Object one="une" two="deux" button="ok"/>
                    <fx:Object one="uno" two="due" button="ok"/>
                    <fx:Object one="um" two="dois" button="ok"/>
                </mx:ArrayCollection>
            </s:dataProvider>
        </s:List>
    </s:VGroup>
</s:Application>

“访问标签”;确保标签被读出并按标签顺序排列.

package accessibility {
import mx.managers.IFocusManagerComponent;

import spark.components.Label;

public class Label extends spark.components.Label implements IFocusManagerComponent {
}
}

我也可以选中列表中的每个项目,即“labelDisplay”,“labelTwo”和“button”,但屏幕阅读器不会读出它们.

是否可以读出每个标签和按钮？