如何停止在spark文本区域中一次触发两个事件（as3+flex4）

发布于 2024-12-09 12:09:15 字数 467 浏览 0 评论 0原文

textChanged 和 valueCommit 两个事件侦听器都附加了一个 Spark textarea，如下所示：

addEventListener("textChanged", 
    function(event:Event):void {                                    
        colorize();                 
},false,0,true);

addEventListener("valueCommit",
    function(event:Event):void {                    
        colorize();                 
},false,0,true);

如果我在 textarea 中键入任何内容，则此 colorize() 函数将被调用两次。我怎样才能阻止这两个事件不应该一起触发呢？请帮忙

原文

textChanged and valueCommit both event listener are attached with a spark textarea as follows:

addEventListener("textChanged", 
    function(event:Event):void {                                    
        colorize();                 
},false,0,true);

addEventListener("valueCommit",
    function(event:Event):void {                    
        colorize();                 
},false,0,true);

if I type any thing in textarea, then this colorize() function is called twice. How can I stop this one that both event should not be triggered together. Pls help

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鲜血染红嫁衣 2024-12-16 12:09:15

如果你想监听打字，为什么要有两个监听器？如果您确实需要两个侦听器，则需要使用 setTimeout 对 colorize 进行排队，而不是直接调用它：

import flash.utils.setTimeout;

private var colorizeQueued:Boolean = false;
private function queueColorize():void
{
    if (colorizeQueued)
        return;

    colorizeQueued = true;
    setTimeout(function():void
    {
        // Process for real and note update
        colorize();
        colorizeQueued = false;
    }, 100);
}


addEventListener("textChanged", 
    function(event:Event):void {                                    
        queueColorize();                 
},false,0,true);

addEventListener("valueCommit",
    function(event:Event):void {                    
        queueColorize();           
},false,0,true);

If you want to listen for typing, why do you have two listeners? If you really need two listeners, you need to queue colorize with a setTimeout instead of calling it directly:

import flash.utils.setTimeout;

private var colorizeQueued:Boolean = false;
private function queueColorize():void
{
    if (colorizeQueued)
        return;

    colorizeQueued = true;
    setTimeout(function():void
    {
        // Process for real and note update
        colorize();
        colorizeQueued = false;
    }, 100);
}


addEventListener("textChanged", 
    function(event:Event):void {                                    
        queueColorize();                 
},false,0,true);

addEventListener("valueCommit",
    function(event:Event):void {                    
        queueColorize();           
},false,0,true);

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