Flex :: Event-based Interaction Between Two Custom Classes?
May 25, 2010
I have 2 custom components, which have their own nesting hierarchy ... One is container for another. I have to "familiarize them" with each other. The way I'm trying to achieve that is using global events (one side is firing and the other one is catching):
Application.application.addEventListener("Hello", function (data:Event):void{
// .. some actions
});
[Code]...
Then should be created the connection between container and it's child.
BUT, the only thing I could acheive is passing a reference to the Container in the DynamicEvent. Is there any chance that I could access the child at the event-handler function.
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Similar Posts:
Mar 2, 2012
This is NOT duplicate of my earlier post (its is slightly different)But this is similar issue with similar error but its not the same error The error I am getting now is below while dispatching the custom event from my custom component
TypeError: Error #1034: Type Coercion failed: cannot convert events::MapEvent@a74ab51 to flash.events.MouseEvent.
dispatchEvent(new MapEvent(MapEvent.CLICKED_ON_MAP));
Note: The error in my earlier post is giving below error message
Type Coercion failed: cannot convert flash.events::Event@81ecb79 to com.events.ShopEvent
The difference here are two things, the earlier error is while converting flash event to custom event and now this one is while converting custom event to flash event and secondly, I have no clue why it is trying to convert to the mouseevent where I am just dispatching my custom event with proper listeners.
This is my custome event
package events
{
import flash.events.Event;
import ui.map.MapElement;
[code]...
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Jul 17, 2011
I'm using a electronic device to dispatch events within AS3.
short explanation: -->
Think of these events as a KeyboardEvent.My point is to dispatch an Event (like a Key that is being pressed) so I can listen to this event on EVERY Class I need to.I'm not sure how to instantiate or listen to these events correctly =/
I mean: I want to be able to listen to the key that is been pressed as if that was a global event every Class can receive...
long explanation: --> I'm doing something like this:
1) created a (main) Class that extends a Sprite.
2) created a class (KeyboardInput) that extends the main class.
3) created a class (KeyMap) that extends EventDispatcher.
4) created a class (HomeScreen) that extends a Sprite.
My FLA file is associated to the KeyboardInput Class.This Class creates a listener for the KEY_DOWN KeyboardEvent and instantiate the KeyMap Class that dispatches a CustomEvent:
stage.addEventListener(KeyboardEvent.KEY_DOWN,function(evt:KeyboardEve nt):void { keymap = new KeyMap(); keymap.setKey(String.fromCharCode(e.charCode)) });[code].....
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Oct 17, 2010
I am learning how to do a custom event in AS3. I can do an event in a class but I dont know how to detect events in other classes. I want to detect in main.as an event reached in class player. E.g., a variable reached a value 4 in class payer and dispatches an event so main.as can detect it. This doesn't give an error but my code doesnt output I can deect an event in main from classplayer.
//main
myplayer=new ClassPlayer();
myplayer.addEventListener("image_loaded",imageLoad edHandler,false,0,true);
myplayer.addEventListener ("watcher_loaded",watcher_loadedHandler,false,0,tr ue);
addChild( myplayer);
[Code] .....
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Nov 5, 2009
I finally got the variable referencing between classes and custom event problems sorted out. Now I got a question regarding the Error #2044 and Error #2035. The error reads like this:
Error #2044: Unhandled IOErrorEvent:. text=Error #2035: URL Not Found.
I've put all the swf in the same directory, so I don't think that is the problem. Could it be that my XML file is in another directory that's causing the problem? I also heard having quotes in the URL in the XML file could also be problematic. Is that true? Here are my AS and my XML file.
[code]......
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Aug 3, 2007
I'm still struggling with the complete concept of custom event handling within AS3. I know I am close to a complete understanding it's just not falling into place yet.[code]...
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Nov 13, 2008
You have some examples of how works custom events in as2? If I have 2 classes that extends movie clip, how can I make them to comunicate with custom event.?
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Nov 4, 2011
I have the following situation:I have an event handler, that displays small messages in my application's statusbar.These messages get passes through by dispatching events from custom components.A simple message could be like "HTTP Error" or so.Now, the main event listener, in the main application file, listens to the event dispatched by any custom component,but seems to refuse listening to events dispatched by custom AS classes.Here is my code for the custom event:
package main.events
{
import flash.events.Event;[code]..
So to sum it all up:
- The event listener listens to the custom event dispatched by any custom component.
- The event listener does not listen to the custom event duspatched by an AS class.
Those who wonder, the event really gets dispatched, that's why I added a trace call.
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Aug 22, 2011
I hava a custom component and it contains a child icon. If I add a mouse-click event listener to both component(click-listener1) and icon(click-listener2), the event dispatched sequence is click-listener2, then click-listener1. I can understand it. But if I add a custom event to component (listener1), and mouse-click event to icon(listener2), when icon is clicked, the component will dispatch the custom event. In my test, the event dispatched sequence is listener1, then listener2. It doesn't match with event-bubbles rule.
In my opinion The custom event is dispatched in listener2, which triggers listener1. Why event flow sequence is not listener2, listener1?
In component.
icon.addEventListener(MouseEvent.CLICK, iconClickHandler);
private function iconClickHandler(event:MouseEvent):void
{
[Code].....
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Sep 8, 2011
I have a custom Flex 4.5 component (to be used in a List) -
Game.mxml (represents a clickable playing table in a card game):
<?xml version="1.0" encoding="utf-8"?>
<s:ItemRenderer [code].......
But I never see the "game clicked: " trace. Does anybody please know why? I'm probably missing something minor, because I can see the "Clicked: 8946" trace.
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Feb 16, 2012
This is similar to the question asked here. I am dispatching custom event "ShopEvent" but i am getting error "Type Coercion failed: cannot convert flash.events::Event@81ecb79 to com.events.ShopEvent"Note: Error is thrown from the parent custom component (3rd code snippet), I have added more details thereThis is my custom event. See the first constant, I copy pasted the event name in custom components.
package com.events
{
import flash.events.Event;
[code]......
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Jun 25, 2009
I've created a base class to house some basic functions I'd like to have across several movie clips in a game I'm making, however, when I link a custom class to the same movie clip I get the message; "The base class will not be used because the class specified is already defined and extends its own subclass. If you wish to use the base class, specify a class name in the Class field that will be auto-generated or enter the default base class 'flash.display.MovieClip' in the Base Class field." I removed the 'extends MovieClip' inside the Class but it still shows the message. Does this mean that I cannot use a custom class and a custom base class on a movie clip?
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Apr 12, 2009
I am having trouble using a custom event in flex. I need to dispatch an event from inside two nested components and receive it in the main application file. The basic set up is a main application file importing a custom "gallery" component.
[Code]..
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Feb 28, 2010
Imagine the UI passes back an XMl node as such:
[Code]....
And behind the scene what it is asking that you instantiate a class as such: new Source("blooper", new Exp(4), new Erlang(4,6); The problem lies in the fact that you don't know what class you will need to processing, and you will be sent a list of these class definitions with instructions on how they can be linked to each other. I've heard that using a BeanFactoryPostProcessor might be helpful, or a property editor/convertor. However I am at a loss as to how best to use them to solve my problem.
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Jan 27, 2012
I am trying to understand event propagation in Flex framework and have a following doubt on it:
Scenario: I have a built-in component DropDownList on change of which I want to create a custom event refreshPreview and want to propagate it to a custom component PictureComponent.
In the custom component's mxml, I have added the Metadata directive as follows to register a refreshPreview event with the compiler
<fx:Metadata>
[Event(name="refreshPreview", type="flash.events.Event")]
</fx:Metadata>
Layout Details: In my main mxml application I have laid out DropDownList and the custom component such that both are siblings (i.e. have a common indirect parent)
e.g.
<s:Group id="contentGroup">
<s:Group id="formGroup">
<s:Form x="11"
[Code]....
I am seeing that the refreshPreview event is not getting propagated to the custom component.
I doubt this is because the built-in component is a sibling of the target (where the event got generated) and not a parent. how to make refreshPreview event propagate to custom component?
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Jul 24, 2011
bubble events up a class tree for none-ui components.I have a structure like this:Controller Unit of Work Child Unit 1 (Raise Event)I would like to handle the event raised in Child Unit 1 in the Controller. I've tried to set the bubble property to true but I've read that this only works for UI components.Is there a way to enable this for custom classes that are not UI components?
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Feb 17, 2009
I am following these direction to the TEE to create a swc for all my custom classes but the swc never compiles. Is there another way of doing this?? [URL]
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Apr 20, 2010
printableInvoice.addEventListener(batchGenerated, printableInvoice_batchGeneratedHandler);Results in this error: 1120: Access of undefined property batchGenerated. I have tried it as FlexEvent.batchGenerated and FlashEvent.batchGenerated.
The MetaData and function that dispatches the even in the component printableInvoice is all right. It I instantiate printableInvoice as an mxml component instead of via action-script it well let put a tag into the mxml line: batchGenerated="someFunction()
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Oct 30, 2011
I have created a custom component based on spark.components.HGroup and it works mostly as needed, but I have this minor problem: I can not move it.
Maybe someone will look at my simplified test case below and spot my error?
Here is the screenshot of my 3 custom components, representing chat bubbles:
Here my custom component Bubble.mxml drawing black text on green background:
<?xml version="1.0" encoding="utf-8"?>
<s:HGroup
xmlns:fx="http://ns.adobe.com/mxml/2009"
[Code]....
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Nov 28, 2011
I have a problem with a custom component based on a Group. Actually, I want to create a section component (a container with a border and a title). I created a path so that the border doesn't hide the label (title):
[Code]...
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Dec 28, 2009
Is there a point of creating custom event class if i dont need to pass custom property with that event?
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May 28, 2011
Assume i have a custom actionscript class. [code]...
Suppose also that i have a different class, that changes a second variable, which has the metadatatag [Bindable]. What methods and events do i have to implement in either of these classes, to make myVariable change, whenever the other is changend?
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Apr 13, 2006
Is it possible to get the custom cursor MC to act opposite the users actions? I want it to be opposite the center of the stage, lets say the real mouse cursor is 200px to the RIGHT of the center of the stage, but the custom mouse cursor is 200px to the LEFT... get it? And the same goes for the y coordinates. I gave it a try, but can't seem to get it right, math never was my strong side
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Oct 7, 2011
I have a Flex tree control that holds a tree full of various types of objects. I'd like to change the label of the item based on this type (and other properties). I'd prefer to do this in a custom TreeItemRenderer rather than via label or labelfunction.It seems that whatever I do, I cannot typecheck nor cast the objects and thus I get [Object object] in the nodes of my tree. Here is my renderer:
public class MyCustomTreeItemRenderer extends TreeItemRenderer {
// Overriding to set the text for each tree node.
override protected function updateDisplayList(unscaledWidth:Number,
[code]....
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Feb 20, 2012
How can I send a custom response upon a custom request on a xampp/wamp based Apache server upon a connection to a specific port?I'm trying to reply to the � a flash app is requesting in order to allow a crossdomain http GET request.The flash policy request, is made to port 843 by default and i'd like to keep it that way.The port should get a � (ending with a null char,� is just for the reference) and replying with something like:
<?xml version="1.0"?>
<!DOCTYPE cross-domain-policy SYSTEM "/xml/dtds/cross-domain-policy.dtd">
<cross-domain-policy>
<site-control permitted-cross-domain-policies="master-only"/>
[code]....
As far as i know, the request should be return as a plain text, although Content-type, might be needed as well.I've tried using the following:[URL] and although it listens to the port and accepts connections, it doesn't reply with the specified xml upon request.I wrote a simple C# web server which listens to port 843, and serves the aforementioned policy - it worked out just fine, however, when using a SecureSocket connection for a secure connection (i.e opening a socket to a HTTPS/SSL protocol) - the request that is sent is encrypted using the hosts certificate. As far as i know, there's no way of listening or acquiring the servers certificate and decrypting the data via an external app hence, the only way is to somehow 'teach' Apache to respond with the crossdomain policy after a proper request is sent via an appropriate port.
Another idea i have is to read the server's certificate file stored in the Apache directory regardless of what happens on the server itself, though imo it's an overkill.
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Jan 28, 2011
I use this code to create and show a MessageWindow:
var newTitleWindow:MessageWindow = PopUpManager.createPopUp(contextView,MessageWindow, true) as MessageWindow;
newTitleWindow.text = message;
PopUpManager.centerPopUp(newTitleWindow);
[Code]....
There is no nested components displayed when I run my app.
The debugger shows they are created and visible.
To my "amusement" the components are shown when I replace s:TitleWindow with mx:TitleWindow.
I really want to use spark TitleWindow.
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Feb 10, 2011
When I create something like the following:
<mx:DataGrid id"myDataGrid"
itemEditBegin="myDataGrid_itemEditBeginHandler(event)" />
When does the event listener for "itemEditBegin" get added and removed? Is this essentially the same as:
<mx:DataGrid id="myDataGrid"
creationComplete="myDataGrid_creationCompleteHandler(event)" />
protected function myDataGrid_creationCompleteHandler(event:FlexEvent):void
{
[Code]...
Basically, I'm wondering where I should add "myDataGrid.addEventListener" if I want to do it programmatically? Should it be in the creationComplete listener function of the object itself, or perhaps in the creationComplete listener function for whatever parent object it resides in?
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Aug 21, 2009
I would like a 'MouseOver' event to trigger a timer. then once the designated time is up the code will instruct to 'GotoAndPlay' the 2nd part of the MC. (so the MC will play from a designated frame - no probs there.) I know almost nothing about timer events and believe this is probably extremely easy to do; it's just that I don't know the code required.
I also know that a simple, but long way round, way of doing it would be to simply add a set of 'still' frames amounting to a certain amount of time. I am very curious about using timers though.
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May 4, 2011
I have a repeater component with custom event. My repeater components fires custom event holding data. My need is to dispatch event so other repeater components can access data from dispatching component.
Edit: Added whole stuff here.
<!-- AttributeMapping.mxml -->
<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:fx="http://ns.adobe.com/mxml/2009"
[Code].....
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Mar 22, 2011
I have a component called X. I'm trying to make a menu come down from it when I put my mouse over it.
I have a mouseOver handler which changes the component's state to another state which shows an extra child component (the menu) on the lower part. This of course makes the X component grow.
I also have mouseOut event handler which makes the menu disappear by returning component X to its original state.
When I move the mouse over the component the menu appears as expected. But when I move the mouse down to the menu that is now visible, as soon as I touch it, it disappears. This way it's impossible to reach the menu.
I guess the mouseOut event is triggered as soon as I move out of the old boundaries. Is this so? And how can I avoid it? The new boundaries should now consider the extra child with the menu.
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