Flex 4在MouseOver上显示交互式容器

Question

目前，我正在尝试创建一个容器B，它在另一个容器A中。默认情况下，容器B是不可见的，当进入容器A时，它应该变为可见并可交互。(把容器B想象成一个按钮)

我使用了下面的代码

<fx:Script>
    <![CDATA[
        protected function mouseOverHandler(event:MouseEvent):void
        {
            this.voter.conB = true;
            this.voter.conB = true;
            this.addElement(this.conB);
        }

        protected function mouseOutHandler(event:MouseEvent):void
        {
            this.conB.visible = false;
            this.conB.enabled = false;
            this.addElement(this.conA);
        }
    ]]>
</fx:Script>

    <s:element id="conB" visible="false"/>
    <s:element id="conA" mouseOver="mouseOverHandler(event)" mouseOut="mouseOutHandler(event)"/>

基本上它是工作的，我遇到的问题是，当我将鼠标移到containerB上，然后flex将其计入容器A中的mouseOutEvent，这使得containerB再次不可见，然后鼠标再次位于容器A上，因为B是不可见的，B再次触发可见。结果是容器b上的闪烁效果，这也使得不可能点击容器b内的按钮。

有没有办法解决这个问题/用另一种方式实现我想要的东西？

Answer 1

嗯，不，这不是问题。

下面是代码的样子：

基本上，我使用spark按钮类的自定义皮肤(此处命名为“”)对其进行了测试，但就像我所说的，它是在为spark按钮类定义新皮肤时未经编辑的纯自动生成的flex代码

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

<!--

    ADOBE SYSTEMS INCORPORATED
    Copyright 2008 Adobe Systems Incorporated
    All Rights Reserved.

    NOTICE: Adobe permits you to use, modify, and distribute this file
    in accordance with the terms of the license agreement accompanying it.

-->

<!--- The default skin class for the Spark Button component.  

       @see spark.components.Button

      @langversion 3.0
      @playerversion Flash 10
      @playerversion AIR 1.5
      @productversion Flex 4
-->
<s:SparkSkin xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" 
             xmlns:fb="http://ns.adobe.com/flashbuilder/2009" minWidth="21" minHeight="21" alpha.disabled="0.5">

    <!-- host component -->
    <fx:Metadata>
        <![CDATA[ 
        /** 
         * @copy spark.skins.spark.ApplicationSkin#hostComponent
         */
        [HostComponent("spark.components.Button")]
        ]]>
    </fx:Metadata>

    <fx:Script fb:purpose="styling">
        <![CDATA[         
            /* Define the skin elements that should not be colorized. 
            For button, the graphics are colorized but the label is not. */
            static private const exclusions:Array = ["labelDisplay"];

            /** 
             * @private
             */     
            override public function get colorizeExclusions():Array {return exclusions;}

            /**
             * @private
             */
            override protected function initializationComplete():void
            {
                useChromeColor = true;
                super.initializationComplete();
            }  

            /**
             *  @private
             */
            override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number) : void
            {
                var cr:Number = getStyle("cornerRadius");

                if (cornerRadius != cr)
                {
                    cornerRadius = cr;
                    shadow.radiusX = cornerRadius;
                    fill.radiusX = cornerRadius;
                    lowlight.radiusX = cornerRadius;
                    highlight.radiusX = cornerRadius;
                    border.radiusX = cornerRadius;
                }

                if (highlightStroke) highlightStroke.radiusX = cornerRadius;
                if (hldownstroke1) hldownstroke1.radiusX = cornerRadius;
                if (hldownstroke2) hldownstroke2.radiusX = cornerRadius;

                super.updateDisplayList(unscaledWidth, unscaledHeight);
            }

            private var cornerRadius:Number = 2;
        ]]>        
    </fx:Script>

    <!-- states -->
    <s:states>
        <s:State name="up" />
        <s:State name="over" />
        <s:State name="down" />
        <s:State name="disabled" />
    </s:states>

    <!-- layer 1: shadow -->
    <!--- @private -->
    <s:Rect id="shadow" left="-1" right="-1" top="-1" bottom="-1" radiusX="2">
        <s:fill>
            <s:LinearGradient rotation="90">
                <s:GradientEntry color="0x000000" 
                                 color.down="0xFFFFFF"
                                 alpha="0.01"
                                 alpha.down="0" />
                <s:GradientEntry color="0x000000" 
                                 color.down="0xFFFFFF" 
                                 alpha="0.07"
                                 alpha.down="0.5" />
            </s:LinearGradient>
        </s:fill>
    </s:Rect>

    <!-- layer 2: fill -->
    <!--- @private -->
    <s:Rect id="fill" left="1" right="1" top="1" bottom="1" radiusX="2">
        <s:fill>
            <s:LinearGradient rotation="90">
                <s:GradientEntry color="0xFFFFFF" 
                                 color.over="0xBBBDBD" 
                                 color.down="0xAAAAAA" 
                                 alpha="0.85" />
                <s:GradientEntry color="0xD8D8D8" 
                                 color.over="0x9FA0A1" 
                                 color.down="0x929496" 
                                 alpha="0.85" />
            </s:LinearGradient>
        </s:fill>
    </s:Rect>

    <!-- layer 3: fill lowlight -->
    <!--- @private -->
    <s:Rect id="lowlight" left="1" right="1" top="1" bottom="1" radiusX="2">
        <s:fill>
            <s:LinearGradient rotation="270">
                <s:GradientEntry color="0x000000" ratio="0.0" alpha="0.0627" />
                <s:GradientEntry color="0x000000" ratio="0.48" alpha="0.0099" />
                <s:GradientEntry color="0x000000" ratio="0.48001" alpha="0" />
            </s:LinearGradient>
        </s:fill>
    </s:Rect>

    <!-- layer 4: fill highlight -->
    <!--- @private -->
    <s:Rect id="highlight" left="1" right="1" top="1" bottom="1" radiusX="2">
        <s:fill>
            <s:LinearGradient rotation="90">
                <s:GradientEntry color="0xFFFFFF"
                                 ratio="0.0"
                                 alpha="0.33" 
                                 alpha.over="0.22" 
                                 alpha.down="0.12"/>
                <s:GradientEntry color="0xFFFFFF"
                                 ratio="0.48"
                                 alpha="0.33"
                                 alpha.over="0.22"
                                 alpha.down="0.12" />
                <s:GradientEntry color="0xFFFFFF"
                                 ratio="0.48001"
                                 alpha="0" />
            </s:LinearGradient>
        </s:fill>
    </s:Rect>

    <!-- layer 5: highlight stroke (all states except down) -->
    <!--- @private -->
    <s:Rect id="highlightStroke" left="1" right="1" top="1" bottom="1" radiusX="2" excludeFrom="down">
        <s:stroke>
            <s:LinearGradientStroke rotation="90" weight="1">
                <s:GradientEntry color="0xFFFFFF" alpha.over="0.22" />
                <s:GradientEntry color="0xD8D8D8" alpha.over="0.22" />
            </s:LinearGradientStroke>
        </s:stroke>
    </s:Rect>

    <!-- layer 6: highlight stroke (down state only) -->
    <!--- @private -->
    <s:Rect id="hldownstroke1" left="1" right="1" top="1" bottom="1" radiusX="2" includeIn="down">
        <s:stroke>
            <s:LinearGradientStroke rotation="90" weight="1">
                <s:GradientEntry color="0x000000" alpha="0.25" ratio="0.0" />
                <s:GradientEntry color="0x000000" alpha="0.25" ratio="0.001" />
                <s:GradientEntry color="0x000000" alpha="0.07" ratio="0.0011" />
                <s:GradientEntry color="0x000000" alpha="0.07" ratio="0.965" />
                <s:GradientEntry color="0x000000" alpha="0.00" ratio="0.9651" />
            </s:LinearGradientStroke>
        </s:stroke>
    </s:Rect>
    <!--- @private -->
    <s:Rect id="hldownstroke2" left="2" right="2" top="2" bottom="2" radiusX="2" includeIn="down">
        <s:stroke>
            <s:LinearGradientStroke rotation="90" weight="1">
                <s:GradientEntry color="0x000000" alpha="0.09" ratio="0.0" />
                <s:GradientEntry color="0x000000" alpha="0.00" ratio="0.0001" />
            </s:LinearGradientStroke>
        </s:stroke>
    </s:Rect>

    <!-- layer 7: border - put on top of the fill so it doesn't disappear when scale is less than 1 -->
    <!--- @private -->
    <s:Rect id="border" left="0" right="0" top="0" bottom="0" width="69" height="20" radiusX="2">
        <s:stroke>
            <s:LinearGradientStroke rotation="90" weight="1">
                <s:GradientEntry color="0x000000" 
                                 alpha="0.5625"
                                 alpha.down="0.6375" />
                <s:GradientEntry color="0x000000" 
                                 alpha="0.75" 
                                 alpha.down="0.85" />
            </s:LinearGradientStroke>
        </s:stroke>
    </s:Rect>

    <!-- layer 8: text -->
    <!--- @copy spark.components.supportClasses.ButtonBase#labelDisplay -->
    <s:Label id="labelDisplay"
             textAlign="center"
             verticalAlign="middle"
             maxDisplayedLines="1"
             horizontalCenter="0" verticalCenter="1"
             left="10" right="10" top="2" bottom="2">
    </s:Label>

</s:SparkSkin>

接下来，我们有名为"container“的自定义组件，如下所示

    <?xml version="1.0" encoding="utf-8"?>
<s:Group 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:components="components.*"
             width="200" height="100">

    <s:TextArea id="text_box" width="100%" height="100%">

    </s:TextArea>
    <s:HGroup id="my_container" gap="20" width="100" height="40" verticalCenter="0" horizontalCenter="0">
        <components:test/>
            <s:button />
    </s:HGroup>
</s:Group>

最后，我们将其放入主应用程序中，如下所示：

    <?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" height="100" width="200" xmlns:components="components.*" backgroundAlpha="0">
    <fx:Declarations>

    </fx:Declarations>

    <fx:Script>
        <![CDATA[



            protected function mouseOverHandler(event:MouseEvent):void
            {
                this.myObject.my_container.visible = true;
                this.myObject.my_container.enabled = true;
            }

            protected function mouseOutHandler(event:MouseEvent):void
            {
                this.myObject.my_container.visible = false;
                this.myObject.my_container.enabled = false;
            }
        ]]>
    </fx:Script>

        <components:Comment id="myObject" mouseOver="mouseOverHandler(event)" mouseOut="mouseOutHandler(event)">

        </components:Comment>

</s:Application>

现在，如果您尝试这样做，您将看到这个容器中的自定义spark按钮组件是不可点击的。但是，标准的s:button组件是可点击的，我不知道为什么。

Answer 2

如果conB是conA的孩子，那么我认为将鼠标移到conB上不会在conA上触发鼠标移出。相同的基本事件逻辑应该仍然有效...

Answer 3

好吧，我不完全确定我是否理解你的scenario...seeing代码可能会有帮助，但我知道如果你在一个元素上有一个皮肤，并且你想让那个元素包含另一个元素，这个皮肤需要这样：

<s:Group id="contentGroup" depth="25"> 
  <s:layout> 
    <s:BasicLayout/>
  </s:layout> 
</s:Group> 

contentGroup是一种神奇的ID，让皮肤知道您在皮肤的对象中嵌套的所有内容(换句话说，皮肤应用于什么)都不会被皮肤本身覆盖。深度是z索引，"contentGroup“组的深度需要高于皮肤中的任何其他值。希望这能有所帮助。