Create and use custom events

Hello, I have a custom component that is essentially a form, populated select fields in a datagrid. I want a button on the form to switch the currentState of application by default to 'change '. I have tried this, but didn't get very far.

I am trying to create a custom event from the component, to be listened to in the main application. I think it's I'm havinf trouble with this one.

First of all, is the best way to do things? I thought it would be. My code is below, any help would be appreciated.

See you soon,.

David

"" < mx:Application xmlns:mx = ' http://www.adobe.com/2006/mxml ' layout = "absolute".
creationComplete = "create1 ()" xmlns:components = "components.*" > "
< mx:Script >
<! [CDATA]
public void stateChangeToEdit(eventObj:Event):void {}
currentState = "change"; I have to qualify the scope of application?
}
This is the where I think I should be 'listen' for the same, but I'm not sure of the correct syntax
[]] >
< / mx:Script >
.. <!-datagrid, webservice call, etc.->
.. <!--appeal to the component-->
< itemNameSet = "{components dg.selectedItem.ITEMNAME: form}" itemTypeSet="{dg.selectedItem.ITEMTYPE}"/ > "
< / mx:Panel >
< / mx:HBox >
< / mx:Application >

<!-code component->

<? XML version = "1.0" encoding = "utf-8"? >
"" < mx:Form xmlns:mx = ' http://www.adobe.com/2006/mxml " width ="100% "height ="100% ">
< mx:Metadata >
[Event (name = "stateChangeToEdit" type = "flash.events.Event")]
< / mx:Metadata >
< mx:Script >
<! [CDATA]
[Bindable] public var _itemName:String;
[Bindable] public var _itemType:String;

public function set itemNameSet(itemName_value:String):void
{
_itemName = itemName_value;
}

public function set itemTypeSet(itemType_value:String):void
{
_itemType = itemType_value;
}

public function buttonClickHandler (): void {}
var eventObj:Event = new Event ("stateChangeToEdit");
dispatchEvent (eventObj);
}
[]] >
< / mx:Script >

< mx:FormItem label = "" name of the article: "id ="formitem2">"
< mx:Text id = "itemName" text = "{_itemName}" / >
< / mx:FormItem >
< mx:FormItem label = "" Item Type: "id ="formitem1">"
< mx:Text id = "itemType" text = "{_itemType}" / >
< / mx:FormItem >
< mx:FormItem width = "140" id = "formitem3" >
< mx:Button label = "Edit" id = "button1" click = "buttonClickHandler ()" / >
< / mx:FormItem >
< / mx:Form >

You must add an eventListener to listen for the event. First give an id to your custom component:

Now you are calling a create1function that is not declared anywhere, then change the code of your application to this script:


public void create1(): void
{
myForm.addEventListener ('stateChangeToEdit', stateChangeToEdit);
}

public void stateChangeToEdit(eventObj:Event):void {}
currentState = "change"; I have to qualify the scope of application?
}
]]>

Try this and let me know if it worked

Tags: Flex

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