Flex :: Listen For Dispatched Events From Container Children?
Oct 5, 2010
I'm using an accordion container that has it's creation policy set to auto. One of the accordion's children is a spark border container that has a data grid within it. Currently, I'm using the data grid's creationComplete property to call a function; similarly, I'm using the dragComplete property to call another function.
How can I add listeners for events (creationComplete & dragComplete) via actionscript? The obvious problem is that the accordion does not create all its children on creation (nor do I want it to), so I can't simply use something like: datagrid.addEventListener(...)
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May 2, 2011
I'm having the following problem: I've implemented a custom headRenderer for my DataGridColumn. The idea is to have a dropdown menu when clicked on the column header. The problem is I don't know how to add a listener or pass a variable to the renderer since the renderer class is instantiated by the ClassFactory.
The renderer class:
<?xml version="1.0"?>
<!-- itemRenderersdataGridmyComponentsRendererDGHeader.mxml -->
<mx:HBox xmlns:mx="library://ns.adobe.com/flex/mx"
[Code].....
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May 25, 2011
Imagine you have a MC used as a container for several other MC's used as buttons.Now, should I use the class of the container to listen for and to dispatch events. OrShould I create a seperate class for each MC inside of the container to listen for and to dispatch events.
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Jul 29, 2010
I have a text area on which I would like to listen to change events when I change the text formatting using setFormatOfRange(). So far all other events I have tried, such as Event.CHANGE or TextOperationEvent.CHANGE are only dispatched when the actual text is changed.
Anyone know what I should be listening for ?
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Jan 27, 2010
I'm currently working on a custom component which extends Canvas (let's call it SuperCanvas) ; it's basically a container that let you zoom & pan its contents. It would be too long to explain why, but I can't use scrollRect, so I was forced to declare a Canvas object (called innerCanvas)... inside my SuperCanvas (I know, not very nice =/) I would like to know if there's a proper way to "redirect" the creation of my component's children in this canvas.
[Code]...
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Aug 2, 2011
I have an as3 class with an embedded swf. I need the embedded swf to dispatch an event and have the as3 class action on that event. This used to work fine when the embedded swf was embedded and had been loaded as an external swf, however now that it's embedded the listener never picks up on the dispatched event.
I've created a simplified example below, the 'onMovieComplete' function is never called.
/* I have an external swf file 'movie.swf' with a simple animation in it.
* When the animation hits a frame (frame 70 in this case) it fires a
* Event.COMPLETE (using:- "this.dispatchEvent(new Event(Event.COMPLETE));" )
*/
[Code]....
why the event dispatched from the embedded swf is never picked up by the listener?
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Jan 27, 2012
I'm trying to detect when pop ups are visible (including tool tips if possible). The reason is that I need to hide or freeze (capture a snapshot) the Stage* components (StageWebView, StageVideo, StageText etc) when pop ups appear.
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May 5, 2011
Is there a way that a flex based application (in the browser or AIR) can listen to windows events (or any other OS) when it is not in focus?Lets say that my AIR application is minimized and I want her to be notified when ever new data was copied to the clipboard?
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Aug 2, 2011
Is this the most efficient way to listen to mouse events on the background of a group?
<s:Group width="200" height="100" rollOver="group1_rollOverHandler(event)" rollOut="group1_rollOutHandler(event)">
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<s:SolidColor alpha="0"/>
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seems pretty minimal, but alpha = 0 is not the most efficient thing out there.
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Feb 16, 2011
I am writing a flex application and I have two Spark TextAreas. I want to create an EventListener so that when the user clicks on a text area, the text inside the TextArea is cleared:
this.addEventListener(FocusEvent.FOCUS_IN, onFocusIn);
private function onFocusIn(ev:FocusEvent):void {
if (this._showsCaption) {
[Code]....
Currently I can implement this with a Spark TextInput, but when I click on the TextArea, the focusIn event never fires and the onFocusIn() handler is never called.
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May 14, 2010
I'm using as container for my LinkButtons. I would like to know
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3) How can I avoid to display scrollbars if the items are not included in the container
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Aug 9, 2010
If I have a container, and I set clipContent to true, how do I get the total height of the children inside it? Is there a method for doing this without itinerating through every child and summing the heights?
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Mar 30, 2011
I have a VBox inside a Canvas. The 'red bars' are custom components based on 'Canvas'. All red bars are of equal height. I have 20 red bars inside the VBox. The scrollbars visible in the screenshot are the Canvas's scrollbars. The scrollbars of the VBox are disabled using verticalScrollPolicy = off.
Without scrolling, only 16 red bars (and a part of the 17th bar) are visible. However, when I scroll down the Canvas I expect to see the remaining red bars - but the bars that are not visible when the application starts don't get 'drawn'. What am I doing wrong? I want the user to be able to see the 17th - 20th bars when the Canvas is scrolled down.
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Feb 11, 2010
Is there an easy way to make a parent container (eg Group) resize when it's children resize?
Below is a little example app. When I put the 200x200 'food' in the 'stomach' the stomach & it's containing 100x100 'body' should resize to contain the food.
[URL]
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
[Code]....
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Mar 18, 2010
If I've got a Container with a child component that is off either the top or the left hand side:
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May 13, 2011
I have code like the following:
<s:VGroup gap="10" id="group" height="100%">
<s:Label text="This is page 2" />
<s:Button content="Resize Canvas" click="resize(event);"/>
<mx:Canvas id="photoCanvas" color="#567898" backgroundColor="#125567">
</mx:Canvas>
</s:VGroup>
I don't understand why the following does not work:
Pushing the Button resizes the photoCanvas's height (gets taller or smaller). Since the photoCanvas control is a child element of the VGroup shouldn't the container update itself to the new height? The Vgroup has ALWAYS the same height, no matter what the (total) height of the children is! I would like the VGroup to adjust itself and get a height value equal to the sum of its children heights. Is this not possible??
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Aug 17, 2011
Flex's new States re-parents visual items that are marked with includeIn/excludeFrom. If I have a Group (MainGroup) with 5 children/elements that are state controlled, is there still a way to get a reference to MainGroup's children? mainGroup.numChildren and mainGroup.numElements don't work since the children are re-parented. At best, they show 1.
<s:states>
<s:State name="view1State" />
<s:State name="view2State" />
<s:State name="view3State" />
[code]....
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Feb 21, 2012
I need to resize a Group using myGroup.height = 0. And it works, but myGroup's children are still visible, I do not know why...
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Feb 24, 2011
I have a custom component extending Group and containing a viewstack child. The component is coded in actionscript.
When instantiating the component in mxml like so:
<components:CustomGroup width="100%" height="100%">
<mx:HBox backgroundColor="0xDDFF11" width="100%" height="100%" />
<mx:HBox backgroundColor="0x22DD63" width="100%" height="100%"/>
</components:CustomGroup>
...I would like to override whatever function that adds the children to the parent Group and add them to the child viewstack instead but I can't seem to find where the adding occurs. Breakpoints in addChild and addElement shows that they are not called during the add.
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Jul 25, 2011
i am having trouble understanding how to dispatch events and where to catch them. currently i have a document class waterMain, and another class called gunner. my waterMain createds a object of gunner and adds it as child, in my gunner there is a function firebullet, in it i dispatch a
dispatchEvent(new Event("bulletFired"));
and from my waterMain class i do a
addEventListener("bulletFired", bulletFiredHandler);
private function bulletFiredHandler(e:Event):void
{
hudMenu.reduceBullet();
}
the hudMenu is a variable on the waterMain document class, however it seems that nothing is happening. is the waterMain class not catching the dispatched event?
package
{
import flash.display.MovieClip;
import flash.display.Stage;
[Code].....
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Dec 30, 2011
I am an AS3 code developer but this time I need to deal with a FLA that has an instance on timeline with complex nesting of movieclips and textfields (that are named via the instance field in Flash). The problem is that events (I put in the Documentclass) on nested movieclips inside that timeline placed instance are never dispatched.
Example code:
// my instance on Stage in all Frames of the timeline
public var thewall:MovieClip;
// event directly on thewall works
// the event is dispatched correctly
thewall.addEventListener(MouseEvent.CLICK,click);
[Code] .....
How do I have to access them to get the Events dispatched?
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Apr 7, 2009
I have two classes, classA and classB
classA is created on the maintimeline
var myClass:ClassA = new ClassA();
addChild(myClass);
one of the methods dispatches an event
dispatchEvent(new Event("createdIt")
How do I create an eventListener for this event in classB?
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May 24, 2011
I have a BorderContainer with some instances of spark Line. I need to select this lines by clicking on this. But adding event mouse click listener fails. ASdoc [URL] says that line have only activate and deactivate events. Any best way to detect whether line clicked (use another line class?). I think that catching of clicks in the bordercontainer is bad solution.
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Sep 30, 2009
I have an animation that I want to start when clicking on the flash window. However, I've also have some buttons on the stage. If I add an event listener for MouseEvent.CLICK on the stage, then it 'eats up' the events and the buttons don't work.
I've tried some tricks, by adding some invisible buttons on top of the real ones, and use the MOUSE_OVER event to selectively enable/disable the mouseEnabled flag for the stage, but didn't work because it complains that the property or method doesn't exist (which I find odd).
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Oct 3, 2009
I have a module, which is a simple swf file to load.
Inside there, in a modules document class I have a code like:
ActionScript Code:
buttonMode = true;
useHandCursor = true;
[Code]....
When I load the module, I can see the drawn background with proper sizes. However, the cursor is not hand (useHandCursor) and mouse events are not dispatched. They are only dispatched on some children of the document class, not on itself, on its own background. ANd the hand cursor is only over the children, not over the document class' background itself again.
The document class of the module extends Sprite.
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Dec 29, 2011
I am an AS3 code developer but this time I need to deal with a FLA that has an instance on timeline with complex nesting of movieclips and textfields (that are named via the instance field in Flash). The problem is that events (I put in the Documentclass) on nested movieclips inside that timeline placed instance are never dispatched.
example code:
// my instance on Stage in all Frames of the timeline
public var thewall:MovieClip;
// event directly on thewall works
[Code].....
View 1 Replies
Dec 29, 2011
I am an AS3 code developer but this time I need to deal with a FLA that has an instance on timeline with complex nesting of movieclips and textfields (that are named via the instance field in Flash). The problem is that events (I put in the Documentclass) on nested movieclips inside that timeline placed instance are never dispatched. example code:
Code:
// my instance on Stage in all Frames of the timeline
public var thewall:MovieClip;
[code]....
View 3 Replies
Mar 8, 2012
I have a popup window. In that popup window, when a user clicks a button and moves out of the popup window, the event should stop. How can I achieve this in flex?
Simply to say, if a mouse moves from the title window or any other container to the outside of the window or component, I want to listen to that event.
I tried with focus out but that fires only when user clicks or changes the component. I also tried with the mouse out event, it also didn't work for me.
how to listen for the event when a user moves a mouse from inside a component to the outside of the component?
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Oct 26, 2008
Does anyone know if it's possible to listen for all events fired from an object without having to specifically listen for each one?
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Aug 6, 2011
I have an SWF that has been provided to me that I need to load. Inside that SWF are two buttons ("cancelButton" and "proceedButton"). Is there any way that I can add event listeners to these buttons from within my action script after I have loaded the SWF or do I need to get the SWF creator to create event listeners on the buttons that can bubble to me?
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