Flash 如何在AS3中创建可重用的切换按钮？

我试图使下面的代码可重用。我需要在我的flash项目多个切换按钮。现在，下面的代码只在一个按钮上工作。如果我继续并创建更多按钮，并遵循下面的格式，我将需要为每个按钮创建单独的函数

我想将可重用代码放在一个单独的ActionScript文件中，而不是放在FLA文件中。我试图将rolloverToggle、rolloverToggle和toggleClick放入我正在创建的类中

// ///////////////////////////////////////////////////////////////////////

// ------- Need to make this code reusable -------

// ///////////////////////////////////////////////////////////////////////

// code on Frame 1

toggleButton.addEventListener(MouseEvent.MOUSE_OVER, rolloverToggle);
toggleButton.addEventListener(MouseEvent.MOUSE_OUT, rolloutToggle);
toggleButton.addEventListener(MouseEvent.CLICK, toggleClick);
toggleButton.buttonState = "off";

// function rolloverToggle
function rolloverToggle(event:MouseEvent) {
    toggleButton.gotoAndStop(toggleButton.buttonState+" over");
}

// function rolloutToggle
function rolloutToggle(event:MouseEvent) {
    toggleButton.gotoAndStop(toggleButton.buttonState);
}

// function toggleClick
function toggleClick(event:MouseEvent) {
    if (toggleButton.buttonState == "on") {
            toggleButton.buttonState = "off";
            toggleButton.gotoAndStop(1);
        } else {
            toggleButton.buttonState = "on";    
        }
}

---

这很简单。创建一个新的通用按钮类，并在其中添加所有事件侦听器。对于要创建的每个新按钮，只需扩展通用按钮并在事件侦听器中填写所需代码即可：

class GenericToggleButton extends Button
{
    public GenericToggleButton()
    {
        this.addEventListener(MouseEvent.MOUSE_OVER, rolloverToggle);
        this.addEventListener(MouseEvent.MOUSE_OUT, rolloutToggle);
        this.addEventListener(MouseEvent.MOUSE_CLICK, toggleClick);
    }

    protected function rolloverToggle(event:MouseEvent):void
    {
         this.gotoAndStop(this.buttonState+" over");
    }

    protected function rolloutToggle(event:MouseEvent):void
    {
        this.gotoAndStop(this.buttonState);
    }

    protected function toggleClick(event:MouseEvent):void
    {
        if (this.buttonState == "on") {
            this.buttonState = "off";
            this.gotoAndStop(1);
        } else { 
            this.buttonState = "on";
        }
    }
}

现在只需扩展该类并添加您的功能

class NewButton extends GenericToggleButton
{
    public NewButton()
    {
        super();
    }

    override protected function toggleClick(event:MouseEvent):void
    { 
        super.toggleClick(event);

        // do magic for this button
    }

    // ETC
}

---

这很简单。创建一个新的通用按钮类，并在其中添加所有事件侦听器。对于要创建的每个新按钮，只需扩展通用按钮并在事件侦听器中填写所需代码即可：

class GenericToggleButton extends Button
{
    public GenericToggleButton()
    {
        this.addEventListener(MouseEvent.MOUSE_OVER, rolloverToggle);
        this.addEventListener(MouseEvent.MOUSE_OUT, rolloutToggle);
        this.addEventListener(MouseEvent.MOUSE_CLICK, toggleClick);
    }

    protected function rolloverToggle(event:MouseEvent):void
    {
         this.gotoAndStop(this.buttonState+" over");
    }

    protected function rolloutToggle(event:MouseEvent):void
    {
        this.gotoAndStop(this.buttonState);
    }

    protected function toggleClick(event:MouseEvent):void
    {
        if (this.buttonState == "on") {
            this.buttonState = "off";
            this.gotoAndStop(1);
        } else { 
            this.buttonState = "on";
        }
    }
}

现在只需扩展该类并添加您的功能

class NewButton extends GenericToggleButton
{
    public NewButton()
    {
        super();
    }

    override protected function toggleClick(event:MouseEvent):void
    { 
        super.toggleClick(event);

        // do magic for this button
    }

    // ETC
}