动作脚本3静态方法

Question

我是新的动作脚本OOP，我需要知道如何链方法像这个例子我有

I.$(button).bind('click',clickButton).bind('rollover',overButton).bind('rollout',outButton)

首先，我需要删除I.使用美元符号仅像jQuery:)选择MovieClip并对其应用任何操作第二个问题，我有，因为这种方式，我使用静态方法动作脚本限制我只使用静态属性保存最后一个谁调用的动作这里是类代码知道我的意思:

package com.MAIN
{
    import flash.display.Sprite;
    import flash.events.MouseEvent;
    public class I extends Sprite
    {
        private static var cSelector:Sprite;
        public static function $(selector:Sprite)
        {
            cSelector = selector
            return I;
        }
        public static function alpha(val:Number)
        {
            cSelector.alpha = val;
            return I;
        }
        // bind mouse event to the element
        public static function bind(EventStr,func:Function)
        {
            var func1:Function = function(e:MouseEvent){
                func(cSelector);
            }
            // select the event from the list
            if(typeof(EventStr) == 'string'){
                // map the events in lowercase
                var events:Object = {click:'CLICK',rollover:'ROLL_OVER',rollout:'ROLL_OUT',dblclick:'DOUBLE_CLICK',mousedown:'MOUSE_DOWN',mousemove:'MOUSE_MOVE',mouseout:'MOUSE_OUT',mouseover:'MOUSE_OVER',mouseup:'MOUSE_UP',mousewheel:'MOUSE_WHEEL'};
                // check if the event exists in the list
                if(events[EventStr] && MouseEvent[events[EventStr]]){
                    cSelector.addEventListener(MouseEvent[events[EventStr]],func1);
                }
            }else if(typeof(EventStr) == 'object'){
                // add the event
                cSelector.addEventListener(EventStr,func1);
            }
            return I;
        }
        public static function remove()
        {
            cSelector.parent.removeChild(cSelector);
            return I;
        }
    }
}

Answer 1

开始吧，朝着正确的方向迈出了一些步骤。然而，这是一个非常，非常，非常糟糕的想法。

//$.as
package
{
    import flash.display.DisplayObject;
    //NOTE: there's NO class definition
    public function $( selector : DisplayObject ) : IDisplayObject
    {
        //traverse displaylist to find <code>selector</code>
        //and return an instance of IDisplayObject that holds the reference        
    }
}
//IDisplayObject.as
package
{
    public interface IDisplayObject{
        function alpha( value : Number ) : IBinding;
    }
}
//IBinding.as
package jquery
{
    public interface IBinding{
        function bind( eventName : String, callback : Function, ...parameters ):void;
    }
}

一旦你创建了这些的具体实现，你可以:

$( someMC ).alpha( .5 ).bind( 'click', function(){ trace( 'what a miraculously crappy idea !!!!' ) } );

Answer 2

您可以这样尝试:

interface Test {
  function doBla(): Test
  function moreBla(): Test
}
public class StaticTest {
  private static const instance: Test = new InternalTest()
  public static doBla() : Test {
    return instance.doBla();
  }
  public static moreBla() : Test {
    return instance.moreBla();
  }
}
internal class InternalTest implements Test {
  function doBla(): Test {
    trace("bla");
    return this;
  }
  function moreBla(): Test {
    trace("more bla");
    return this;
  }
}