Flex：如何确定 PopUpManager 窗口是否打开（或何时关闭）？

发布于 2024-12-03 08:41:04 字数 256 浏览 1 评论 0原文

在 Flex (Flash Builder 4) 中，我通过 PopUpManager.addPopUp 打开一个新窗口。我的组件中有运行的计时器代码，我需要在该窗口打开时停止计时器，并在窗口关闭时再次启动计时器。

我认为在打开窗口的函数中停止计时器很容易，但是当窗口关闭时如何再次启动计时器？

有没有办法判断我的组件前面是否有弹出窗口，或者特定的弹出窗口是否仍然通过 PopUpManager 打开？

也许事件是更好的方法？

谢谢！

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森林很绿却致人迷途 2024-12-10 08:41:04

活动！是要走的路。
发射/关闭期间的火灾事件。在事件处理程序中添加您的逻辑！

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挽清梦 2024-12-10 08:41:04

您可以使用以下代码来检查打开的弹出窗口是否被关闭。
如果它关闭，您可以停止计时器。

  //set the flag to find your popup window is exist or not.
  private var isPopupExist:Boolean = false;

  private function closePopUpWindow():void
  {

   var systemManager:SystemManager = FlexGlobals.topLevelApplication.systemManager;
   //Returns a list of all children.
   var childList:IChildList = systemManager.rawChildren;
   for(var i:int=childList.numChildren-1;i>=0;i--)
   {
      var childObject:* = childList.getChildAt(i);
      //If child object is Uicomponent.
      if (childObject is UIComponent)
      {
      var uiComponent:UIComponent = childObject as UIComponent;
      //If uicomponent is popup and class name is equal to **your popup component name** here i am using "ChatComp".

          if (uiComponent.isPopUp && uiComponent.className == "ChatComp")
          { 
                  isPopupExist = true;
          }
      }
   } 
}

在您的计时器中，

  private function checkPopUpExistance():void
  {
     call closePopUpWindow() function for every 1 sec or any seconds(your wish) to check whether popup is exist or not.
     if(isPopupExist)
     {
       here you stop the timer.
     }
 }

现在您可以在打开弹出窗口时启动计时器。

You can use following code to check whether opened popup window is getting closed or not.
if it is closed you can stop the timer.

  //set the flag to find your popup window is exist or not.
  private var isPopupExist:Boolean = false;

  private function closePopUpWindow():void
  {

   var systemManager:SystemManager = FlexGlobals.topLevelApplication.systemManager;
   //Returns a list of all children.
   var childList:IChildList = systemManager.rawChildren;
   for(var i:int=childList.numChildren-1;i>=0;i--)
   {
      var childObject:* = childList.getChildAt(i);
      //If child object is Uicomponent.
      if (childObject is UIComponent)
      {
      var uiComponent:UIComponent = childObject as UIComponent;
      //If uicomponent is popup and class name is equal to **your popup component name** here i am using "ChatComp".

          if (uiComponent.isPopUp && uiComponent.className == "ChatComp")
          { 
                  isPopupExist = true;
          }
      }
   } 
}

in your Timer,

  private function checkPopUpExistance():void
  {
     call closePopUpWindow() function for every 1 sec or any seconds(your wish) to check whether popup is exist or not.
     if(isPopupExist)
     {
       here you stop the timer.
     }
 }

Now you can start the Timer, when you opened the Popup window.

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