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Flash Window ActionScript Functionality

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Taken from a lynda.com tutorial on learning actionscript. Lots of comments for the moment.

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  1. //Create a global variable to hold the current top depth available
  2. var nTopDepth:Number;
  3. //Create an associative array to store the names of the opened windows
  4. var oOpenedWindows:Object = new Object();
  5.  
  6. //Add the 2 event handles to the buttons. Passes the id name through to the addWindow function.
  7. mcButtonOne.onRelease = function():Void {
  8. 	addWindow("WindowOne");
  9. };
  10. mcButtonTwo.onRelease = function():Void {
  11. 	addWindow("WindowTwo");
  12. };
  13.  
  14. function addWindow(sLinkage:String):Void {
  15. 	//If a value already exists in the associative array for the window, return.
  16. 	if(oOpenedWindows[sLinkage] != undefined) {
  17. 		oOpenedWindows[sLinkage].swapDepths(nTopDepth);//if the window exists, bring the existing window to the top depth
  18. 		return;
  19. 	}
  20. 	var nIndex:Number = this.getNextHighestDepth();//get the next highest level to put the window on
  21. 	var mcWindow:MovieClip = this.attachMovie(sLinkage, "mcWindow" + nIndex, nIndex);//attach the selected window and apply the next highest depth
  22. 	mcWindow._x = 100;//set selected window to 100px
  23. 	mcWindow._y = 100;//set selected window to 100px
  24. 	nTopDepth = nIndex;//set the nTopDepth to nIndex we aquired above.
  25. 	oOpenedWindows[sLinkage] = mcWindow;//Insert a value into the associative array
  26.  
  27. 	mcWindow.mcWindowBackground.onPress = function():Void {
  28. 		this._parent.swapDepths(nTopDepth);//swap the selected window with the current top depth to bring it to the front
  29. 		this._parent.startDrag();//target the window background, then its parent to add a drag function onPress
  30. 	};
  31. 	mcWindow.mcWindowBackground.onRelease = function():Void {
  32. 		this._parent.stopDrag();//target the window background, then its parent to remove a drag function onRelease
  33. 	};
  34. 	mcWindow.mcWindowBackground.onReleaseOutside = mcWindow.mcWindowBackground.onRelease;
  35.  
  36. 	mcWindow.mcCloseSquare.onRelease = function():Void {
  37. 		delete oOpenedWindows[sLinkage]//remove the window from the array on close
  38. 		this._parent.removeMovieClip();//remove the movie clip when you press the close button.
  39. 	};
  40. }

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