ActionScript 3.0 :: Target An Event At Object Not In The Display List?
Jun 7, 2010
I'm trying to dispatch a custom event from a custom class (which implements IEventDispatcher) to another custom class (also implements IEventDispatcher) but I cannot trigger the corresponding event handlers.The classes are instantiated at different parts of the application: one on the main canvas and the other on the back-end (data side) of the app. Neither of these is part of the display list hierarchy and I need them to communicate through events.I've looked through adobe docs, the web and Mook's Essential AS3, but have come up with nothing...
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Oct 1, 2011
i have made a list control. i want to display the name of the objects in it in a text control box
the code i am using here is
public function add(event:MouseEvent):void
{
var str:String;
str = mylistcontrol.dataProvider.getItemAt(0).toString();
[Code]....
The problem with this code is i am using index value of 0. however i want to display the name of object on which i have clicked or which is highlighted.
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Mar 6, 2008
Is there any way to test if a display object has been added to the display list?
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Mar 4, 2011
What's a simple way to detect if a display object is currently on the display list?
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Feb 9, 2009
It's my understanding that a display object cannot be in the display list more that once.So if I add something to the stage shouldn't a second addition of the same object replace the first? for instance:
[code]...
there should now only be one "myDisplayObject" on the stage.
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Dec 15, 2009
Consider this (psuedo-code):
var country = new Country();
addChild(country);
var state = new State();
[code]......
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Jul 13, 2011
I have a movieclip, let's call it "myMC", that is very long (5,000 frames) over the course of which many dozens of nested movieclips are added/removed as children to/from "myMC".Without reference to the nested clips, is there a way I can add a listener to myMC and listen for when an object is added/removed from it (something along the lines of Event.ADDED)?
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Oct 4, 2010
i have this really basic class and all it does is create a button...i have another class called main where i want to put the button on the stage...problem is it all compiles but can't get the button to display..
public class Main extends Sprite
{
public function Main()
{
[Code].....
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Oct 7, 2010
Is there a way to make a display object always be at the top of the display list?For example, I know you can set the childIndex, i.e:setChildIndex(myDisplayObject, numChildren-1);But is there a way that an object has sensed that something else has been added to the display list and restack themselves accordingly?
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Jun 14, 2009
When a movie clip is removed from the stage it's properties are still accessible including visible == true. How do I test to see if it is off the time line?
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Feb 24, 2011
I have an object that controls another object that is on the display list.
The setup looks like this:
Parent (Main Timeline)
- Child
-- Grandchild --> contains instance of behaviour class that controls the grandchild's movement
I have an event in the "behaviour" that I'd like to reach the parent, but the behavior does not extend Sprite or MovieClip.
How can I get this event to reach the parent?
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May 10, 2011
I have an application that uses a main class to control other MovieClips, adding and removing them as needed, most of them are separate screens or sub menus.
When I leave the main menu and come back to it later from another screen, certain animations and roll over buttons still play, which I don't want, I basically need the main menu screen to reset every time it is seen.
I read up on this and found out that removing the child doesn't necessarily remove it from the memory.
I tried setting the mainmenu to null before moving onto a different screen but this threw up an error, stating that the parameter child must be none null.
how to completely kill my mainmenu when it is not needed.
public function confSubMenuOneScreen():void {
subMenuOneScreen = new SubMenuOne();
mainmenu = null;
[Code].....
This is the example of code that removes the menu and adds another screen, with the mainmenu = null code that throws up the error.
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Nov 28, 2008
Any command to check whether an object is currently present in the Display List? I have a TextField called _startHereText. I have some logic where I need to sometimes use RemoveChild to take this object out of the Display List, but I first need to determine if it is presently there.
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May 18, 2009
MouseEvent.target will return the target object... but how do I access the specific object type? I know it's probably simple... but it's late and I'm fried. The code below obviously doesn't work. I just need someone to tell me what to put instead of [object MovieClip] and [object SimpleButton]
Code:
stage.addEventListener(MouseEvent.CLICK, fOnClick);
function fOnClick(e:MouseEvent):void {
[code].....
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Sep 21, 2009
For some reason below is not working. It is probably very obvious but I am not seeing it. As soon as I comment out the container mc variable and just add Child to root timeline I see everything which means me container is not being added to the stage correctly.
stop();
import flash.display.MovieClip;
var i:int = 0;
var a:Number = 10;
var ageString:String;
var ageText:Array = new Array();
[Code] .....
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Jul 12, 2009
I need to access a non-display list top-level (Parent? Ancestor? What's the correct term?) object from a display list object, and I don't know how.
In my code, ResultX is an instance of my custom class Result. Card is a sprite, a visual representation of the ResultX object, defined inside the Result class and attached (or removed) to the stage via a separate function inside the result class as needed.
I want to refer to the correct Result object when the user clicks on the corresponding card to call a function there. In accessing the sprite manually, ResultX.card works fine, but I don't know how to go upwards trough the path - card.parent (or actually target.parent, since it's done via event) just returns Main, of course.
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Dec 8, 2009
I'm trying to create an image class that I can reuse throughout a website I'm making.
When you click an image i want it to expand to fill the screen. When this happens obviously it will have to be at the top of the display list so that none of the other objects on the website are above it. The problem is that I want to be able to use this class throughout the website, even within containers that are beneath other objects so it seems impossible to simply bring it to the front easily?
Edit: Maybe when you click an image it would create a replica on top of the current image but above all the other objects on the main stage - then expand that one instead of the original image in the container? Theres got to be a better method though... I can't imagine this working too smoothly.
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Sep 28, 2010
how I can target the parent container of whichever object receives an event?
Code:
Parent1.btnA.addEventListener(MouseEvent.CLICK, doSomething);
Parent2.btnA.addEventListener(MouseEvent.CLICK, doSomething);
Parent3.btnA.addEventListener(MouseEvent.CLICK, doSomething);
[Code].....
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Nov 3, 2011
I have an object that is instantiated, then placed into a property within a singleton (single instance) object. When a button is clicked an event is dispatched carrying a payload that references the display object that is held within the Singleton. When the event is heard, my view object adds the object to the display list e.g. addChild().The Item shows. Now If I hit another button an event is dispatched, and a new item is added to the display list via the method above and is seen. The 1st object is removed from the display list Here is my problem. When I click the button to load the 1st Object the above process is executed again but the object does not show.
I can run trace statements from the object that is supposed to be visible and they run fine. I even do a check to see if the visible property is set to true, and it is, but not object is on my screen. Code for this process.
//custom event carries the name of the page aka display object. this is a string
dispatchEvent(new MenuEvent(MenuEvent.CHANGE_VIEW_STATE, event.payload));
//When the event is heard, the following condinial is run
[code].....
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Nov 16, 2010
I've got these Flash students I TA for a course, and they are doing drag and drop exercises and have come across some weirdness.(They are using a frames based design to represent different pages of activity, with a menu to goto each frame under user control.)At author time:
1. they set up drag and drop as3 for an object on a particular frame.
2. when startDrag is initiated, they moved the dragged object to the top of the display list, so it appears to float above all other objects as the user drags.
at runtime,a problem appears:the object seems to have been pulled out of the frame, and now floats in a display list above any frame that may be advanced to.What's going on here? It's like the object got pulled off the authortime stage and now is disconnected. Going back to the drag and drop frame shows the original object again, reinstanced, along with this copy that got pulled out.
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Oct 18, 2010
If an asset (say an swf) is already loaded. Does it increase memory use to add and object to the display list?
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Aug 22, 2010
how do we remove object( sprite which has an external swf as it's child ) from display and more importantly from memory yet we still can use the same variable to add another object (yes another sprite like the one we removed yet has different content).., "
i did tried the removeChildAt thing it did remove all the child from the display list but i still can hear sound from video running.
here is small scale code of what i'm doing (sorry that i can only give you chunk code of loading and adding)
// var SWFList:XMLList; //used to hold a list of all external swf source,atribute and etc// var totalSWF:int; //hold the total number of external swf there is to be loaded
// var swfLoader:Loader; //instance of loader class used to load the external swf
[Code]....
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May 9, 2010
When I'm removing an object from the display list (via removeChild), I'm performing a splice on all of the arrays that the object has:
[Code]....
My thinking was that this frees up some memory similar to disposing a bitmapdata. Does this even do anything? Or, will arrays be cleared and the memory usage restored when the object is removeChilded?
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Jan 4, 2011
I m building a little application, im design the graphic in Flash and im using Flash Builder for the Programming Side. I have 5 MovieClip inside a Sprite (the container), and i want to listen for MOUSE.CLICK. I add the event listener to the Sprite, instead of one for MovieClip, and its working good like this.
What if inside the Sprite (the container) i have also a TextField and exclude it from the event flow?
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Dec 17, 2009
I have a utility class that I use to load images that never gets added to the stage and is extending EventDispatcher, it simply loads the data and spits it back out on request.
I want to add a custom event to track loading progress from outside the class. The events are firing but not (i think) bubbling because they aren't in the display list.
Is there a good way around this? I was thinking: Can I have a non display list object tell a display object to send the custom event for it?
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Sep 1, 2010
lets say i have 2 classes in the same package.and i add the same event listener to each of them, for example i add event.resize to some display object container in both of them.how can i prevent the code attached to that listener to execute in one of the classes if that event happens?
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Aug 23, 2009
I have a SendData class that sends form info to a php script. It is a static class that does not extend anything.
I want to be able to dispatch an event if there is an error, or when it gets info back from the server. I have a custom event class that I have been using to dispatch events like this, but I have only used that in displayObject extended classes.
The problem is, it seems like something has to be a displayObject based class to dispatch events. I know there must be a way to do this, but I'm having trouble finding it in searches.
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Jun 7, 2011
In Actionscript 3 is there any way to determine the precise display object hierarchy an event will traverse through when dispatched from a given object? The object is not necessarily a display object.Although I could imagine this actually being useful somehow, in my particular case it is a learning exercise. I'm trying to master the event system in flash and have some locations where I'm very curious what path an event will take when I dispatch it.
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Jan 31, 2010
If I create a rectangle with 100px width and 100px height and then rotate it, the size of the element's "box" will have increased.With 45 rotation, the size becomes about 143x143 (from 100x100).Doing sometimes like cos(angleRad) * currentWidth seems to work for 45 rotation, but for other bigger angles it doesn't.At the moment I am doing this:
var currentRotation = object.rotation;
object.rotation = 0;
var normalizedWidth = object.width;
[code].....
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May 26, 2011
Flex 3 List control had a itemRollOver event. Flex 4 List doesn't have it. Is there an equivalent or a workaround for this issue?
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