Re: [flexcoders] Event Handlers inside custom components
On 7/28/05, Archibald Scatflinger [EMAIL PROTECTED] wrote:
I do not want to use implicit getter/setters because I want the
components property to be bindable.
To make the component's property bindable, specify a ChangeEvent for
the property and dispatch the event when the value changes.
e.g.
?xml version=1.0?
mx:Box xmlns:mx=http://www.macromedia.com/2003/mxml; xmlns=*
mx:Label text={labelText} /
mx:Script
// Storage for 'labelText' property
private var _labelText:String = ;
[ChangeEvent(labelTextChange)]
public function get labelText():String
{
return _labelText;
}
public function set labelText(value:String):Void
{
if (value != _labelText)
{
_labelText = value;
dispatchEvent({type: labelTextChange});
}
}
/mx:Script
/mx:Box
When labelText is modified, the component dispatches an event to
trigger binding. Check out the generated AS to see how this works.
Manish
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Re: [flexcoders] Event Handlers inside custom components
I actually figured this out right after I asked but I did it a different way.
It does basically the same thing though.
Here is an example:
!My application page (TestApp.mxml)--
-
?xml version="1.0" encoding="utf-8"?
mx:Application xmlns:mx="http://www.macromedia.com/2003/mxml" xmlns:Weee="*" initialize="SetVar()"
mx:Script
![CDATA[
function SetVar(){
MyTest.MyValue = "Rararararar";
}
]]
/mx:Script
Weee:MyTestComp id="MyTest" /
/mx:Application
-
!My component file (MyTestComp.mxml)--
-
?xml version="1.0" encoding="utf-8"?
mx:VBox xmlns:mx="http://www.macromedia.com/2003/mxml" width="400" height="400"
mx:Script
![CDATA[
var MyValue:String = "BlahBlah"
function set MyOtherValue(NewValue):Void {
mx.core.Application.alert('The new value is: '+MyValue);
}
]]
/mx:Script
mx:Binding source="MyValue" destination="MyOtherValue" /
/mx:VBox
-
From: Manish Jethani [EMAIL PROTECTED]Reply-To: flexcoders@yahoogroups.comTo: flexcoders@yahoogroups.comSubject: Re: [flexcoders] Event Handlers inside custom componentsDate: Thu, 28 Jul 2005 23:12:51 +0530On 7/28/05, Archibald Scatflinger [EMAIL PROTECTED] wrote: I do not want to use implicit getter/setters because I want the components property to be bindable.To make the component's property bindable, specify a "ChangeEvent" forthe property and dispatch the event when the value changes.e.g.?xml version="1.0"?mx:Box xmlns:mx="http://www.macromedia.com/2003/mxml" xmlns="*" mx:Label text="{labelText}" / mx:Script // Storage
for 'labelText' property private var _labelText:String = ""; [ChangeEvent("labelTextChange")] public function get labelText():String { return _labelText; } public function set labelText(value:String):Void { if (value != _labelText) { _labelText = value; dispatchEvent({type: "labelTextChange"}); } } /mx:Script/mx:BoxWhen labelText is modified, the component dispatches an event totrigger binding. Check out the generated AS to see how this works.Manish
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Re: [flexcoders] Event Handlers inside custom components
I actually figured this out right after I asked but I did it a different way.
It does basically the same thing though.
Here is an example:
!My application page (TestApp.mxml)--
-
?xml version="1.0" encoding="utf-8"?
mx:Application xmlns:mx="http://www.macromedia.com/2003/mxml" xmlns:Weee="*" initialize="SetVar()"
mx:Script
![CDATA[
function SetVar(){
MyTest.MyValue = "Rararararar";
}
]]
/mx:Script
Weee:MyTestComp id="MyTest" /
/mx:Application
-
!My component file (MyTestComp.mxml)--
-
?xml version="1.0" encoding="utf-8"?
mx:VBox xmlns:mx="http://www.macromedia.com/2003/mxml" width="400" height="400"
mx:Script
![CDATA[
var MyValue:String = "BlahBlah"
function set MyOtherValue(NewValue):Void {
mx.core.Application.alert('The new value is: '+MyValue);
}
]]
/mx:Script
mx:Binding source="MyValue" destination="MyOtherValue" /
/mx:VBox
-
From: Manish Jethani [EMAIL PROTECTED]Reply-To: flexcoders@yahoogroups.comTo: flexcoders@yahoogroups.comSubject: Re: [flexcoders] Event Handlers inside custom componentsDate: Thu, 28 Jul 2005 23:12:51 +0530On 7/28/05, Archibald Scatflinger [EMAIL PROTECTED] wrote: I do not want to use implicit getter/setters because I want the components property to be bindable.To make the component's property bindable, specify a "ChangeEvent" forthe property and dispatch the event when the value changes.e.g.?xml version="1.0"?mx:Box xmlns:mx="http://www.macromedia.com/2003/mxml" xmlns="*" mx:Label text="{labelText}" / mx:Script // Storage
for 'labelText' property private var _labelText:String = ""; [ChangeEvent("labelTextChange")] public function get labelText():String { return _labelText; } public function set labelText(value:String):Void { if (value != _labelText) { _labelText = value; dispatchEvent({type: "labelTextChange"}); } } /mx:Script/mx:BoxWhen labelText is modified, the component dispatches an event totrigger binding. Check out the generated AS to see how this works.Manish
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[flexcoders] Event Handlers inside custom components
I have a custom component and I want to make it so that when one of its properties is changed by an external source then it triggers one of the components methods. I realize that this is probably really simple and I am just missing something but everything I have tried has either produced errors or just not worked. I do not want to use implicit getter/setters because I want the components property to be bindable. For example: When this happens: MyCustomComponent.someproperty = SomeNewValue; I want it to trigger this: MyCustomComponent.DoSomeFunction(); I want this to be defined inside of the component though so it is invisible outside of the component. Any thoughts? Is this as easy as I think it should be? -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [flexcoders] Event Handlers inside custom components
Yes, using object.watch(prop, callback [, user data]) On 7/28/05, Archibald Scatflinger [EMAIL PROTECTED] wrote: I have a custom component and I want to make it so that when one of its properties is changed by an external source then it triggers one of the components methods. I realize that this is probably really simple and I am just missing something but everything I have tried has either produced errors or just not worked. I do not want to use implicit getter/setters because I want the components property to be bindable. For example: When this happens: MyCustomComponent.someproperty = SomeNewValue; I want it to trigger this: MyCustomComponent.DoSomeFunction(); I want this to be defined inside of the component though so it is invisible outside of the component. Any thoughts? Is this as easy as I think it should be? -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links -- Regards, Scott Barnes http://www.mossyblog.com -- Flexcoders Mailing List FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
