actionscript-3 - AS3将变量参数传递给通用功能菜单/子项

Question

我不是代码天才，而是行动脚本爱好者。
你能帮我吗？

我有一个函数，根据选择的对象，该函数将事件监听器调用已经在舞台上的一组“子项目”(我想在单击时重新使用具有更改参数的子项目，而不是创建多个实例和代码)。

因此，对于每个选定的“案例”，我必须将不同的变量传递给那些“子项目”，如下所示:

function fooMenu(event:MouseEvent):void {
    switch (event.currentTarget.name)
    {
        case "btUa1" :
            trace(event.currentTarget.name);
            // a bunch of code goes here
            //(just cleaned to easy the view)
            /*
            HELP HERE <--
            here is a way to pass the variables to those subitems
            */

            break;
    }
}

function fooSub(event:MouseEvent):void
{
    trace(event.target.data);
    trace(event.currentTarget.name);
    // HELP PLEASE <-> How can I access the variables that I need here ?
}

btUa1.addEventListener(MouseEvent.CLICK, fooMenu);
btUa2.addEventListener(MouseEvent.CLICK, fooMenu);

btTextos.addEventListener(MouseEvent.CLICK, fooSub);
btLegislacao.addEventListener(MouseEvent.CLICK, fooSub);

有人帮我吗？
非常感谢。 :)

Answer 1

(我不确定我的问题是对的，而且我有一段时间没有在AS3中进行开发了。)

如果您只想创建带有将在单击(或其他事件)时调用的参数的函数，则可以使用以下命令:

btUa1.addEventListener(MouseEvent.CLICK, function() {
  fooMenu(parameters);
});

btUa2.addEventListener(MouseEvent.CLICK, function() {
  fooMenu(other_parameters)
}):

public function fooMenu(...rest):void {
  for(var i:uint = 0; i < rest.length; i++)
  {
     // creating elements
  }
}

如果要调用分配给其他对象的事件侦听器，则可以使用DispatchEvent

btnTextos.dispatchEvent(new MouseEvent(MouseEvent.CLICK))

请记住，您不能使用btTextos.addEventListener(MouseEvent.CLICK，carregaConteudo(“jocasta”));因为您在添加Eventlistener时传递的第二个参数将被视为函数本身-有两种使用addEventListener的正确方法:

1:

function doSomething(event:MouseEvent):void
{
  // function code
}
element.addEventListener(MouseEvent.CLICK, doSomething); //notice no brackets

2:

element.addEventListener(MouseEvent.CLICK, function() { // function code });

所以:

function fooSub(event:MouseEvent, bla:String):void 
{ 
trace(event.currentTarget.name+" - "+bla); 
// bla would be a clip name. 
} 

codebtTextos.addEventListener(MouseEvent.CLICK, function(e:MouseEvent) { fooSub(e, "jocasta") } ); 

如果您希望动态生成内容，请尝试以下方法:

btUa1.addEventListener(MouseEvent.CLICK, function() {
    createMenu(1);
});

btUa2.addEventListener(MouseEvent.CLICK, function() {
    createMenu(2);
});

function createMenu(id):void
{
    // Switching submenu elements
    switch (id)
    {
        case 1:
            createSubmenu([myFunc1, myFunc2, myFunc3]); // dynamically creating submenus in case you need more of them than u already have
            break;
        case 2:
            createSubmenu([myFunc4, myFunc5, myFunc6, myFunc7]);
            break;
        default:
            [ and so on ..]
    }
}

function createSubmenu(...rest):void {
    for (var i:uint = 0; i < rest.length; i++) 
    {
        var mc:SubItem = new SubItem(); // Subitem should be an MovieClip in library exported for ActionScript
        mc.addEventListener(MouseEvent.CLICK, rest[i] as function)
        mc.x = i * 100;
        mc.y = 0;
        this.addChild(mc);
    }
}