Actionscript 3.0 :: Making Instances Of A Class Aware Of Each Other?
Sep 17, 2009
I am just making the move to AS3, and in particular - moving my code to classes and packages. And right now, the penny hasnt dropped. I understand that packages group a group of related classes, but my brain just hasnt seemed to grasp a few concepts.
As a start, i thought i would port a dropdown i built in as2, to as3. The problem i am having specifically is making instances of the dropdown aware of each other. For example, I have a Dropdown Class that adds my dropdown to the stage. This class is responsible for building the dropdown, and adding the items to it.
But lets say i make another instance of this class. This brings up several issues that i dont fully understand. For example: - when one dropdown instance is open, it is the current_selected. When I open another dropdown, i want to send an event to the other instances that says "hey, if you are open you need to close" - a reset all function. Which would work similar to above. It would send an event all all instances of the dropdown class and trigger their internal "reset()" method
In as2, i would simply create some variables to keep track of these things. As far as i am aware, you can't add package level variables that instances can all see?
So, Do i need to add a customised version of the event dispatcher? and if so, how do i tie all these instances into a group of sorts.
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Code: Select allpackage {
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Dec 2, 2010
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[code].....
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[Code]...
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Code:
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Code:
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[Code]....
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I'm currently stumped by this. I've created a class to load xml data from a txt file, then assign that xml to a variable named siteStructureXml. When I trace the value of siteStructureXml from within the class instance it shows the expected xml data. When I try to assign the value to a variable returnedXml defined on the timeline of my movie, it's value traces as null. I've a feeling it's something blindingly obvious..
[Code]...
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I'm writing a series of Search windows for an application. I create the FLA files on the stage, each has 3 simple buttons: next_btn, prev_btn, and close_btn. Those all have event listeners which call findNext(), findPrev() and closeWin() respectively. Each search window looks for different things, some with a text box and some with a combo, etc.
So I have a base class com.search that extends Sprite and adds the eventListeners at startup (actually, on addedToStage). Like this:
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next_btn.addEventListener("click",findNext); prev_btn.addEventListener("click",findPrev); close_btn.addEventListener("click",closeWin);}
[Code]....
If I add the event listeners in the derived class rather than the base, it works fine. But that seems to defeat the purpose of inheritance, plus it infers that I won't be able to derive new classes/swfs from those derived classes.
how does one reference objects created on the stage from a base class of that document's class?
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