“链”等一系列功能一起在ActionScript 3 [英] 'chain' a series of functions together in actionscript 3

问题描述

我调用一个函数，并添加一个监听器，当函数返回的一些数据。当返回的数据，我需要调用另一个函数等。

I'm calling a function and adding a listener for when the function returns some data. when the data is returned i need to call another function and so on.

有没有一种简单的方法，以链，这些功能结合在一起，使第一个火 - 等待监听器，然后触发第二个创建一个监听者，并依此类推，直至最后一个调用定义一个单独的函数在开始时。它将我想工作，对同一线作为大容量装载器脚本。

Is there an easy way to 'chain' these functions together so that the first one fires - waits for the listener then fires the second one creating a listener for that and so on until the last one calls a separate function that is defined at the start. It would i suppose work on the same lines as the bulk loader scripts.

我设想的code工作是这样的：

I'm envisaging the code working something like this:

var dataLoader:DataLoader = new DataLoader(onAllComplete, onError);

dataLoader.add(getData1, {args1, args2}, listnerType.DATA_LOADED);
dataLoader.add(getData2, {args3, args4}, listnerType.DATA_LOADED);
dataLoader.add(getData3, {args5, args6}, listnerType.DATA_LOADED);

dataLoader.start();

private function onAllComplete(e:Array):void {
  //where e contains an array of all the event results
}
private function onError(e:Event):void {
  //will fire if there are any errors along the way
}

谢谢， 约什

Thanks, Josh

推荐答案

我也只是做一些简单的，如：（也是，这是八九​​不离十伪code，你需要正确的错误事件之类的东西）

I would just do something simple like: (also, this is sorta psuedo code, you'll need the correct error events and stuff)

var numLoaded:int = 0;
var numError:int = 0;
var loadingIndex:int = 0;

var itemsToLoad:Array = ['img1.jpg', 'img2.jpg', 'img3.jpg'];

public function startLoading():void{
     loader.load(itemsToLoad[loadingIndex];
     loader.addEventListener(Event.COMPLETE, completeHandler);
}

public function completeHandler(event:Event):void{
     loadingIndex++;
     numLoaded++;
     if(numLoaded + numError >= itemsToLoad.length){
          onAllItemsComplete();
     }else{
          loader.load(itemsToLoad[loadingIndex];
     }
}

public function errorHandler(event:Event):void{
     loadingIndex++;
     numError++;
     if(numLoaded + numError >= itemsToLoad.length){
          onAllItemsComplete();
     }else{
        loader.load(itemsToLoad[loadingIndex]; 
     }
}

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