ActionScript 3.0 :: Way To Call Method/set Property Of A Parent?
Feb 24, 2010
To my knowledge, there are 3 options:1 - parent.publicPropertyOrMethod.2 - using static vars/methods.3 - dispatching events.Under best practise for OOP development, which is the "best" method? Are there any more?I dislike #1 and never use it as it and can easily descend into hideous parent.parent.parent references that are easily broken. #2 has it's own problems whereby attempting to get/set instance variables doesn't always work through a static function (I am yet to completely understand this). #3 is great for triggering methods (I use this the most) but sucks for altering class properties and suchlike.
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Dec 22, 2009
I loaded external swf named child.swf from parent.swf. i am having a function called parentFunction() in parent.swf. I want to call parentFunction() from child swf.
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Sep 3, 2008
I have a custom class called ToolBar which is attached to a library item. The library item has other clips within it and each is an instance of ToolBarButtonA, B, C etc and these all extend the generic class ToolBarButton. If I set an event handler for CLICK within each ToolBarButton to trace 'parent' it comes back [Object ToolBar] which is what I expected but if I try to then call a method through 'parent.methodName()' it fails saying 'call to possibly undefined method'
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Feb 22, 2011
I am using this guide for passing data to modules "Using interfaces for module communication". For getting child module instances they have done this
var ichild:* = mod.child as IModuleInterface; (mod = moduleLoader)
What should I do to get instance of parent application inside module? How can I call parent methods inside modules?
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Feb 7, 2012
I have a dynamic Class and what I would like to do is call a method everytime a property is appended to the class during run-time.
[Code]....
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May 12, 2011
If I have a .mxml file that has a method in it and a public property, can I have the method execute whenever the property changes.
<?xml version="1.0" encoding="utf-8"?>
<mx:HBox xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:Script>
[Code].....
In another .mxml file I have added this .mxml file like so:
<viewComponents:MyViewComponent myProperty="{myVariable}" />
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Mar 15, 2011
I am trying to access a function that is on my document class for my AS3 project, from a nested class. That is, the Document Class calls Class A which then calls Class B. So I am trying to access a function from Class B, I am trying to use MovieClip(parent).function(); but I am getting error 1120. The MovieClip(parent) (fixed to reflect my document class, etc) works when I try it from other classes but not from this nested class.
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Nov 19, 2010
I am getting this error: 1180: Call to a possibly undefined method startWorld.but the method startWorld is defined as you can see in attachment.
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Feb 19, 2010
I'm tryng to make a public static method call another method, but Flash throws error 1180, sayng that the method called by the static method is undefined.
Code: Select allpackage
{
import flash.display.MovieClip;[code]....
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Sep 25, 2009
why this is not working.I have an application with a new class I just created. The class loads, but will not call it's own internal function.
package com.parkerandkent.components.classic.photogallery {
import caurina.transitions.Tweener;
import flash.display.MovieClip;[code]....
"Test 2" will not fire here.And I get this error message:
CallTag.as , Line 10 1180: Call to a possibly undefined method init.
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Nov 4, 2010
I need to get a javascript var in my Flash application. I like to be able to just set a variable in the javascript (client constraints) rather than define a function.
Can this be done? I am trying to use the ExternalInterface.call()
AS:
ExternalInterface.call("function(){return window.someVar}", null);
JS:
var someVar = "Test";
This does not work and I suspect it is because the ExternalInterface.call() does not like the anonymous function.
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Sep 7, 2010
I have a class. I can call the constructor (initialize the class), and the constructor can then call a function/method inside it's own class (so I know it works), but when I try to call the same function/method myself from the instance of the class I just initialized, I get an error.
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Jun 8, 2010
I have an issue with my eventListeners with the URLLoader, but this issue happens in IE, not in FF.
public function getUploadURL():void {
var request:URLRequest = new URLRequest();
request.url = getPath();[code]....
The issue is that my getBaseURL gets executed automatically after I have executed the code at least once, but that is the case only in IE. What happens is I call my getUploadURL, I make sure the server sends an event that will result in an Event.COMPLETE, so the getBaseURL gets executed, and the listener is removed. If I call the getUploadURL method and put the wrong path, I do not get an Event.COMPLETE but some other event, and getBaseURL should not be executed.
That is the correct behavior in FireFox. In IE, it looks like the load() method does not actually call the server, it jumps directly to the getBaseURL() for the Event.COMPLETE. I checked the willTrigger() and hasEventListener() on _loader before assigning the new URLLoader, and it turns out the event has been well removed.
I simplified my code. To sum up quickly: in FireFox it works well, but in IE, the first call will work but the second call won't really call the .load() method; it seems it uses the previously stored result from the first call.
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Sep 6, 2010
I have looked around a fair amount and cannot find any information as to whether this can be done.
I want to know if it is possible to entend functions of a parent class i.e.I have a parent class which has a draw method and extends sprite. I want to draw something in this class e.g. a Box. Then I have a child class which extends the parent class. I then want another draw function in this class so that it still draw what is in the parents draw class as well as what is in the child draw class.[code]...
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Jul 13, 2010
var some="someone" some main.swf. mc:MovieClip.mc in main.swf. Iam load a mainMenu.swf file into mc. how can call some variable in mainmenu.
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Sep 6, 2009
So I have[code]...
also... my other classes that are run through initCore aren't doing anything but tracing, so I know there loaded but none of the objects that are supposed to be created are being created.
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Jan 29, 2010
i have a swf that loads a swf that loads one swf into that one. i need the final swf (child, child) to be able to call a function on the first swf (parent)
i have tried this:
if(MovieClip(parent.parent.parent)!=null){MovieCli p(parent.parent.parent).parentFunctionCall();}
[Code].....
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Aug 26, 2010
What the correct way to call a parent from an embed SWF. In my case I am building a project in flashdevlop but embedding swfs for a few nav elements and I need those to either dispatch an event or call a method so it cant change pages. Best case is calling my "Main" instance. For example "Main.theMethod()" not sure if Main is seen by the embeded swf, I know in as3 I could call _root and get it, not so sure in as3.
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Mar 7, 2009
I have a function (let's call it testFunction for right now ) on the actions layer in the main timeline There is a movie clip with 15 frames long in the library
i want to add a child of the movie clip on the stage, and call testFunction when it finishes playing
how can i do? i tried to call it in the child but nothing works
Or, is there any way to show child on the stage for only a period of time like 1 second and then remove it automaticly?
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Jun 30, 2011
I'm trying to understand the difference between the owner and parent properties of the UIComponent.
<s:Panel id="panOne" title="Success">
<s:Label id="labOne" text="Hello World!!"/>
</s:Panel>
In the above code, labOne.owner.id returns panOne and labOne.parent.id returns contentGroup.
I understand the owner property refers to the parent container of a component (Label in this case). But what does parent property actually mean? I think it relates to some skin concept which has a with id value of contentGroup.
exact difference between these two?
There is another link in the link provided by you. It explained these two terms very clearly. That link is: Gumbo DOM Tree API - Functional and Design Specification
I have pasted below the best lines from that page.
The parent of a visual element is the container directly in charge of laying it out. The owner of a visual element is the component that logically owns it. If a Button is in a SkinnableContainer, its parent is the contentGroup while its owner is the SkinnableContainer.
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Nov 12, 2009
can't figure out why "parent" would be an undefined property.. this is a compiler error, not run-time:
Code:
override protected function fire():void {
var startX:Number = MovieClip(parent).x + (MovieClip(parent).width/2);
var startY:Number = MovieClip(parent).y + (MovieClip(parent).height/2);
var bullet:Bullet = new BlasterBullet(_stage, startX, startY, _firingSpeed, _firingStrength);
}
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Dec 16, 2009
MovieClip add itself to a chosen parent DisplayObject in its Constructor Method?
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Feb 16, 2009
I just recently been using a lot of prototype javascript stuff, and was wondering there was anything like the "bind" method, for use in AS3. It's proved quite useful to be able to look both at the event.target as well as the class object the handler function might be associated with.
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Jan 15, 2009
I am playing with a page viewer which imports SWFs for pages from an XML file.If i make a button on one of these pages, can i get it to call the parent master SWF functions?I have tried this...
code:
nextBtn.onRelease = function() {
var nextPage = _root.offsetPages(_root.page+2,_root.removedPages) ;
if(nextPage<=_root.offsetPages(_root.maxpage,_root .removedPages)) _root.gotoPage(nextPage);
}
but while it hovvers like a btn the functions still not calling.
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Feb 6, 2010
I want to call the parent function called "edit_groups()" from the itemRenderer. The code for my itemRenderer is:
<mx:VBox id="vbx_container" paddingBottom="4" paddingLeft="4" paddingRight="4" paddingTop="4" borderStyle="solid"
dropShadowEnabled="true" width="100%" height="100%" horizontalScrollPolicy="off" verticalScrollPolicy="off" >
<mx:Canvas width="100%" height="100%" horizontalScrollPolicy="off" verticalScrollPolicy="off" >
<mx:Image id="image" width="100" height="100" source="{data.thumb}" scaleContent="true" maintainAspectRatio="true"
complete="{image_smoothing_handler(event);}" trustContent="true" doubleClick="{Call The Parent Function"edit_groups()"}"/>
</mx:Canvas></mx:VBox>
And I call my itemRenderer from an application like:
list_groups_modify.itemRenderer=new ClassFactory(groups.list_groups_modify_item_renderer);
<mx:Label text="{data.label}" textAlign="center" maxWidth="60" toolTip="{data.label}"/>
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Jun 1, 2011
Is it possible to call a child function from within the parent? I know to go child > parent, you can do parentApplication.functionName(parameters);, but what about going the other way... that is parent > child?
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Jan 23, 2009
how I reference vars/instances from a parent class by using a static function and I wonder if there is a better way to do it.
I have a main document class Main.as with a public static function called mainFunction().
ActionScript Code:
public static function mainFunction( _mc:MovieClip, _nVar:Number ):void
{
// do something
[Code]......
This can be tricky if the static function has many variables from its own class.
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Jan 2, 2009
this is the code i found out on the web to call a function in the parent swf from the loaded child swf.
in the child swf:
Code: Select allpanel.next_mc.addEventListener(MouseEvent.CLICK, onClick);
function onClick(e:MouseEvent):void{
MovieClip(this.parent.parent).parentFunction();
}
[Code].....
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Aug 27, 2009
How can I make a call to a function in the parent class of the class I'm in.
example:
main class
Code:
package {
import flash.display.Sprite;
public class mainClass extends Sprite
{
[Code].....
I realise that there is some stuff that is missing in the "full" code here, but that's just because I'm to lazy to write it all...
How do I get the "someButton" in the "child_class" to call the "theImportantFunction" in the main class? I know that it is possible to make a "dispatchEvent" in the "mouseClick" function, and then add a eventlistener in the main class.. But is there another way to just call the function directly?
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Aug 19, 2011
Assign an event listener to a protected timer variable in the parent class.
I am working with Adobe LCCS, and created a BatonProperty which implements Baton
Now, Baton has a protected timer variable declared like this, and for some reason, I am unable to get access to this _autoPutDownTimer, from a BatonProperty instance.[code]...
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