<?xml version="1.0" encoding="utf-8"?>

<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"

               minWidth="955"

               minHeight="600">

    <fx:Declarations>

        <!-- 将非可视元素（例如服务、值对象）放在此处 -->

    </fx:Declarations>

    <!-- Flex中如何利用FocusManager类的setFocus函数设置TextInput的焦点的例子 -->

    <fx:Script>

        <![CDATA[

        import mx.controls.Alert;

        private function submitButton_click(evt:MouseEvent):void {

        Alert.show(evt.currentTarget.label,

        Object(focusManager.getFocus()).name);

        }

        private function resetButton_click(evt:MouseEvent):void {

        username.text = "";

        password.text = "";

        Alert.show(evt.currentTarget.label,

        Object(focusManager.getFocus()).name);

        }

        ]]>

    </fx:Script>

    <mx:ApplicationControlBar dock="true">

        <mx:Button label="Set focus to Username"

                   click="focusManager.setFocus(username);" />

        <mx:Button label="Set focus to Password"

                   click="focusManager.setFocus(password);" />

    </mx:ApplicationControlBar>

    <mx:Form id="form"

             defaultButton="{submitButton}" left="300">

        <mx:FormItem label="Username:">

            <mx:TextInput id="username" />

        </mx:FormItem>

        <mx:FormItem label="Password:">

            <mx:TextInput id="password"

                          displayAsPassword="true" />

        </mx:FormItem>

        <mx:FormItem direction="horizontal"

                     horizontalAlign="right"

                     width="100%">

            <mx:Button id="submitButton"

                       label="Submit"

                       click="submitButton_click(event);" />

            <mx:Button id="resetButton"

                       label="Reset"

                       click="resetButton_click(event);" />

        </mx:FormItem>

    </mx:Form>

</s:Application>