Re: [flexcoders] Setting custom component properties in MXML
If you are defining your component in MXML, then no, id cannot be
private. When you define a component in MXML, the component class will
inherit from whatever the main container class is, which in this case is
Canvas. Canvas extends UIComponent, which defines the id attribute as
being public. The only way to create a component with a private id
attribute is to create the component in ActionScript, extend a subclass
of UIcomponent, then override the id getter setter. And this goes for
'redefining' any built-in property of a UIComponent class.
___
Joseph Balderson, Flash Platform Developer | http://joeflash.ca
Writing partner, Community MX | http://www.communitymx.com
Abobe Certified Developer Trainer
Merrill, Jason wrote:
When using your own custom made components in MXML, what is the best way
to easily set properties? I.e., say I have a simple component that has
an image inside a panel, and I want to set the image source in my MXML,
like this:
c:MyImageComponent imageSource=myPhoto.jpg /
The way I figured was to setup the component like this with a public
property - this works, but seems kinda kludgy - isn't there a more
preferred way (WITHOUT doing it all in Actionscript)?
mx:Canvas xmlns:mx=http://www.adobe.com/2006/mxml;
width=500 height=800 creationComplete=update()
mx:Script
![CDATA[
public var imageSource:String;
private function update():void
{
userPhotoImage.source = imageSource;
}
]]
/mx:Script
mx:Panel x=100 y=100
mx:Image id=userPhotoImage x=10 y=10/
/mx:Panel
/mx:Canvas
Bonus question - is there a way to make the component ids inside of the
main component private? (i.e., in the example above, make the id for
the mx:Image component private). Because when I see code hinting, I
see both the public property imageSource, but also the Image component's
id, userPhotoImage, which I would prefer to keep private.
Jason Merrill
Bank of America
GTO LLD Solutions Design Development
eTools Multimedia
Bank of America Flash Platform Developer Community
--
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Re: [flexcoders] Setting custom component properties in MXML
To go back to your original example, it does seem a bit kludgy to me too. In
this case I would use databinding like so:
mx:Canvas xmlns:mx=http://www.adobe.com/2006/mxml; width=500
height=800
mx:Script
![CDATA[
[Bindable]
public var imageSource:String;
]]
/mx:Script
mx:Panel x=100 y=100
mx:Image source={imageSource} x=10 y=10/
/mx:Panel
/mx:Canvas
If I'm making MXML components I often do stuff like that and just use
bindable public properties to pass through variables, which works well for
these simple cases.
Doug
On 1/13/08, Joseph Balderson [EMAIL PROTECTED] wrote:
If you are defining your component in MXML, then no, id cannot be
private. When you define a component in MXML, the component class will
inherit from whatever the main container class is, which in this case is
Canvas. Canvas extends UIComponent, which defines the id attribute as
being public. The only way to create a component with a private id
attribute is to create the component in ActionScript, extend a subclass
of UIcomponent, then override the id getter setter. And this goes for
'redefining' any built-in property of a UIComponent class.
__
Joseph Balderson, Flash Platform Developer | http://joeflash.ca
Writing partner, Community MX | http://www.communitymx.com
Abobe Certified Developer Trainer
Merrill, Jason wrote:
When using your own custom made components in MXML, what is the best way
to easily set properties? I.e., say I have a simple component that has
an image inside a panel, and I want to set the image source in my MXML,
like this:
c:MyImageComponent imageSource=myPhoto.jpg /
The way I figured was to setup the component like this with a public
property - this works, but seems kinda kludgy - isn't there a more
preferred way (WITHOUT doing it all in Actionscript)?
mx:Canvas xmlns:mx=http://www.adobe.com/2006/mxml;
width=500 height=800 creationComplete=update()
mx:Script
![CDATA[
public var imageSource:String;
private function update():void
{
userPhotoImage.source = imageSource;
}
]]
/mx:Script
mx:Panel x=100 y=100
mx:Image id=userPhotoImage x=10 y=10/
/mx:Panel
/mx:Canvas
Bonus question - is there a way to make the component ids inside of the
main component private? (i.e., in the example above, make the id for
the mx:Image component private). Because when I see code hinting, I
see both the public property imageSource, but also the Image component's
id, userPhotoImage, which I would prefer to keep private.
Jason Merrill
Bank of America
GTO LLD Solutions Design Development
eTools Multimedia
Bank of America Flash Platform Developer Community
--
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
[flexcoders] Setting custom component properties in MXML
When using your own custom made components in MXML, what is the best way
to easily set properties? I.e., say I have a simple component that has
an image inside a panel, and I want to set the image source in my MXML,
like this:
c:MyImageComponent imageSource=myPhoto.jpg /
The way I figured was to setup the component like this with a public
property - this works, but seems kinda kludgy - isn't there a more
preferred way (WITHOUT doing it all in Actionscript)?
mx:Canvas xmlns:mx=http://www.adobe.com/2006/mxml;
width=500 height=800 creationComplete=update()
mx:Script
![CDATA[
public var imageSource:String;
private function update():void
{
userPhotoImage.source = imageSource;
}
]]
/mx:Script
mx:Panel x=100 y=100
mx:Image id=userPhotoImage x=10 y=10/
/mx:Panel
/mx:Canvas
Bonus question - is there a way to make the component ids inside of the
main component private? (i.e., in the example above, make the id for
the mx:Image component private). Because when I see code hinting, I
see both the public property imageSource, but also the Image component's
id, userPhotoImage, which I would prefer to keep private.
Jason Merrill
Bank of America
GTO LLD Solutions Design Development
eTools Multimedia
Bank of America Flash Platform Developer Community
RE: [flexcoders] Setting custom component properties in MXML
Public variable is one certainly acceptable way. Another is to use
setter/getter functions. They are especially useful if you need to take
some action when the property value is set. I use these very often.
You can declare a public property in mxml:
mx:Object id=imageSource /
I don't do this much and wonder about data type issues.
All mxml declared properties are public. I don't know any way to make
the private.
Except by declaring them in AS, which you are resisting.
Tracy
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Merrill, Jason
Sent: Friday, January 11, 2008 12:05 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Setting custom component properties in MXML
When using your own custom made components in MXML, what is the best way
to easily set properties? I.e., say I have a simple component that has
an image inside a panel, and I want to set the image source in my MXML,
like this:
c:MyImageComponent imageSource=myPhoto.jpg /
The way I figured was to setup the component like this with a public
property - this works, but seems kinda kludgy - isn't there a more
preferred way (WITHOUT doing it all in Actionscript)?
mx:Canvas xmlns:mx=http://www.adobe.com/2006/mxml
http://www.adobe.com/2006/mxml
width=500 height=800 creationComplete=update()
mx:Script
![CDATA[
public var imageSource:String;
private function update():void
{
userPhotoImage.source = imageSource;
}
]]
/mx:Script
mx:Panel x=100 y=100
mx:Image id=userPhotoImage x=10 y=10/
/mx:Panel
/mx:Canvas
Bonus question - is there a way to make the component ids inside of the
main component private? (i.e., in the example above, make the id for
the mx:Image component private). Because when I see code hinting, I
see both the public property imageSource, but also the Image component's
id, userPhotoImage, which I would prefer to keep private.
Jason Merrill
Bank of America
GTO LLD Solutions Design Development
eTools Multimedia
Bank of America Flash Platform Developer Community
Re: [flexcoders] Setting custom component properties in MXML
Merrill, Jason wrote: When using your own custom made components in MXML, what is the best way to easily set properties? I.e., say I have a simple component that has an image inside a panel, and I want to set the image source in my MXML, like this: c:MyImageComponent imageSource=myPhoto.jpg / The way I figured was to setup the component like this with a public property - this works, but seems kinda kludgy - isn't there a more preferred way (WITHOUT doing it all in Actionscript)? No, that's pretty much how you do it. If you need more granual control over the properties you can create get and set methods. I'm sure you can find info in the docs on such things. Bonus question - is there a way to make the component ids inside of the main component private? (i.e., in the example above, make the id for the mx:Image component private). Because when I see code hinting, I see both the public property imageSource, but also the Image component's id, userPhotoImage, which I would prefer to keep private. For this I believe you have to create the sub component in ActionScript. However, once you add it to the stage people can still get to your subcomponent using the 'children' methods; unless you override them to ignore your children of course. -- Jeffry Houser, Technical Entrepreneur, Software Developer, Author, Recording Engineer AIM: Reboog711 | Phone: 1-203-379-0773 -- My Company: http://www.dot-com-it.com My Podcast: http://www.theflexshow.com My Blog: http://www.jeffryhouser.com
RE: [flexcoders] Setting custom component properties in MXML
Public var (or function get/set pairs) are how you define properties.
No real clean way to do it using tags for simple types.
All id's are public. You can create a private slot and assign it
dynamically.
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Merrill, Jason
Sent: Friday, January 11, 2008 9:05 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Setting custom component properties in MXML
When using your own custom made components in MXML, what is the best way
to easily set properties? I.e., say I have a simple component that has
an image inside a panel, and I want to set the image source in my MXML,
like this:
c:MyImageComponent imageSource=myPhoto.jpg /
The way I figured was to setup the component like this with a public
property - this works, but seems kinda kludgy - isn't there a more
preferred way (WITHOUT doing it all in Actionscript)?
mx:Canvas xmlns:mx=http://www.adobe.com/2006/mxml
http://www.adobe.com/2006/mxml
width=500 height=800 creationComplete=update()
mx:Script
![CDATA[
public var imageSource:String;
private function update():void
{
userPhotoImage.source = imageSource;
}
]]
/mx:Script
mx:Panel x=100 y=100
mx:Image id=userPhotoImage x=10 y=10/
/mx:Panel
/mx:Canvas
Bonus question - is there a way to make the component ids inside of the
main component private? (i.e., in the example above, make the id for
the mx:Image component private). Because when I see code hinting, I
see both the public property imageSource, but also the Image component's
id, userPhotoImage, which I would prefer to keep private.
Jason Merrill
Bank of America
GTO LLD Solutions Design Development
eTools Multimedia
Bank of America Flash Platform Developer Community
