[flexcoders] Binding question
I am trying to bind the checkbox selected property as written below.
The value of selected should be triggered whenever currentPresentation
changes or whenever albumIncluded(data) returns a different value. The
checkbox is in a List itemRenderer component.
ItemRenderer
mx:CheckBox id=albumEnabled
selected={presentations.currentPresentation.albumIncluded(data as
Album)} /
mx:Script
![CDATA[
[Bindable]
private var presentations:PresentationCollection =
PresentationCollection.getInstance();
]]
/mx:Script
The albumIncluded function is in a class called Media and is coded as
follows:
Media class (the class is marked [Bindable])
-
private var _includedAlbums:ArrayCollection /* of Albums */ =new
ArrayCollection();
public function includeAlbum(album:Album):void {
_includedAlbums.addItem(album);
if (!currentAlbum)
currentAlbum = album;
dispatchEvent(new Event(albumToggledEvent));
}
[Bindable(event=albumToggledEvent)]
public function albumIncluded(album:Album):Boolean {
return _includedAlbums.getItemIndex(album) = 0;
}
Apparently the albumIncluded function doesn't fire when includeAlbum()
function is called.
So I put a read-only property called includedAlbums in Media which is
supposed to be triggered when _includedAlbums changes.
Media class (class is Bindable)
private var _includedAlbums:ArrayCollection /* of Albums */ =new
ArrayCollection();
public function includeAlbum(album:Album):void {
_includedAlbums.addItem(album);
if (!currentAlbum)
currentAlbum = album;
dispatchEvent(new Event(albumToggledEvent));
}
[Bindable(event=albumToggledEvent)]
public function albumIncluded(album:Album):Boolean {
return _includedAlbums.getItemIndex(album) = 0;
}
[Bindable(event=none)] // handles runtime binding warnings
public function get includedAlbums():ArrayCollection /* of Albums */ {
return _includedAlbums;
}
And added a helper function to the ItemRenderer component, with the idea
that if either currentPresentation or includedAlbums changed it would
fire the helper function which would return the correct value for the
checkbox selected property.
ItemRenderer
---
mx:CheckBox id=albumEnabled
selected={albumToggleHelper(presentations.currentPresentation.includedA\
lbums)} /
mx:Script
![CDATA[
[Bindable]
private var presentations:PresentationCollection =
PresentationCollection.getInstance();
private function albumToggleHelper(includedAlbums:ArrayCollection /* of
Albums */):Boolean {
return presentations.currentPresentation.albumIncluded(data as Album);
}
]]
/mx:Script
But it looks like the includedAlbums property is never firing an event.
How do I get my checkbox selected to set to the right value?
(Note: I also tried setting the bindable event tag to
event=albumToggledEvent for the includedAlbums getter property, and it
still didn't work.)
ascii
[flexcoders] Binding question
I am trying to bind the checkbox selected property as written below.
The value of selected should be triggered whenever currentPresentation
changes or whenever albumIncluded(data) returns a different value. The
checkbox is in a List itemRenderer component.
ItemRenderer
mx:CheckBox id=albumEnabled
selected={presentations.currentPresentation.albumIncluded(data
as Album)} /
mx:Script
![CDATA[
[Bindable]
private var presentations:PresentationCollection =
PresentationCollection.getInstance();
]]
/mx:Script
The albumIncluded function is in a class called Media and is coded as
follows:
Media class (the class is marked [Bindable])
-
private var _includedAlbums:ArrayCollection /* of Albums */ =new
ArrayCollection();
public function includeAlbum(album:Album):void {
_includedAlbums.addItem(album);
if (!currentAlbum)
currentAlbum = album;
dispatchEvent(new Event(albumToggledEvent));
}
[Bindable(event=albumToggledEvent)]
public function albumIncluded(album:Album):Boolean {
return _includedAlbums.getItemIndex(album) = 0;
}
Apparently the albumIncluded function doesn't fire when includeAlbum()
function is called.
So I put a read-only property called includedAlbums in Media which is
supposed to be triggered when _includedAlbums changes.
Media class (class is Bindable)
private var _includedAlbums:ArrayCollection /* of Albums */ =new
ArrayCollection();
public function includeAlbum(album:Album):void {
_includedAlbums.addItem(album);
if (!currentAlbum)
currentAlbum = album;
dispatchEvent(new Event(albumToggledEvent));
}
[Bindable(event=albumToggledEvent)]
public function albumIncluded(album:Album):Boolean {
return _includedAlbums.getItemIndex(album) = 0;
}
[Bindable(event=none)] // handles runtime binding warnings
public function get includedAlbums():ArrayCollection /* of
Albums */ {
return _includedAlbums;
}
And added a helper function to the ItemRenderer component, with the idea
that if either currentPresentation or includedAlbums changed it would
fire the helper function which would return the correct value for the
checkbox selected property.
ItemRenderer
---
mx:CheckBox id=albumEnabled
selected={albumToggleHelper(presentations.currentPresentation.includedA\
lbums)} /
mx:Script
![CDATA[
[Bindable]
private var presentations:PresentationCollection =
PresentationCollection.getInstance();
private function
albumToggleHelper(includedAlbums:ArrayCollection /* of Albums
*/):Boolean {
return
presentations.currentPresentation.albumIncluded(data as Album);
}
]]
/mx:Script
But it looks like the includedAlbums property is never firing an event.
How do I get my checkbox selected to set to the right value?
(Note: I also tried setting the bindable event tag to
event=albumToggledEvent for the includedAlbums getter property, and it
still didn't work.)
ascii
[flexcoders] Binding Question - ArrayCollection/ResourceBundle
Is it possible to have an ArrayCollection value updated by a resource
bundle value.
[Bindable]
public var cbDP:ArrayCollection = new ArrayCollection();
cbDP.addItem(
{label:ResourceManager.getInstance().getString('myResources','NAME') });
When changing locales at runtime, all label fields of flex components
update but the ArrayCollection does not.
Is the ResourceManager binding ignored on AC's? Is there another
solution?
Thanks,
Jeff
RE: [flexcoders] Binding Question - ArrayCollection/ResourceBundle
You are defining dynamic objects and they are not bindable. If you had a class
that dispatched an event when the locale changed then it should work.
From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf
Of securenetfreedom
Sent: Friday, December 12, 2008 9:39 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Binding Question - ArrayCollection/ResourceBundle
Is it possible to have an ArrayCollection value updated by a resource bundle
value.
[Bindable]
public var cbDP:ArrayCollection = new ArrayCollection();
cbDP.addItem(
{label:ResourceManager.getInstance().getString('myResources','NAME') });
When changing locales at runtime, all label fields of flex components update
but the ArrayCollection does not.
Is the ResourceManager binding ignored on AC's? Is there another solution?
Thanks,
Jeff
[flexcoders] binding question?
I have two screens for testing.
a) I set object values in screen 1 (for instance obj.value =abc) and
go to screen 2
b) I show the value in screen 2 with binding (for instance mx:Label
x=37 y=46 text={obj.value}/ and go to screen 1
it works fine when it excute first time.(from screen 1 to screen 2)
Afater I change from screen 2 to screen 1,the binding value
{obj.value} in screen 2 keep the previous value even if I change
the object values in screen 1 (for instance obj.value =xyz).
but the binding value {obj.value} should change to xyz,do you know
why this happen.
Thanks for your help.
Mark
RE: [flexcoders] binding question?
Is obj type Object? Dynamic Object properties are not bindable.
Tracy
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of markflex2007
Sent: Wednesday, April 30, 2008 2:41 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] binding question?
I have two screens for testing.
a) I set object values in screen 1 (for instance obj.value =abc) and
go to screen 2
b) I show the value in screen 2 with binding (for instance mx:Label
x=37 y=46 text={obj.value}/ and go to screen 1
it works fine when it excute first time.(from screen 1 to screen 2)
Afater I change from screen 2 to screen 1,the binding value
{obj.value} in screen 2 keep the previous value even if I change
the object values in screen 1 (for instance obj.value =xyz).
but the binding value {obj.value} should change to xyz,do you know
why this happen.
Thanks for your help.
Mark
Re: [flexcoders] binding question?
obj is a instance of VO(value object), do you think if the binding is ok?
Thank
Mark
- Original Message
From: Tracy Spratt [EMAIL PROTECTED]
To: flexcoders@yahoogroups.com
Sent: Wednesday, April 30, 2008 3:19:33 PM
Subject: RE: [flexcoders] binding question?
Is “obj” type “Object”?
Dynamic Object properties are not bindable.
Tracy
From:[EMAIL PROTECTED] ups.com [mailto:flexcoders@ yahoogroups. com] On Behalf
Of markflex2007
Sent: Wednesday, April 30, 2008
2:41 PM
To: [EMAIL PROTECTED] ups.com
Subject: [flexcoders] binding
question?
I have two screens for testing.
a) I set object values in screen 1 (for instance obj.value =abc)
and
go to screen 2
b) I show the value in screen 2 with binding (for instance mx:Label
x=37 y=46 text={obj.value} / and go
to screen 1
it works fine when it excute first time.(from screen 1 to screen 2)
Afater I change from screen 2 to screen 1,the binding value
{obj.value} in screen 2 keep the previous value even if I change
the object values in screen 1 (for instance obj.value =xyz).
but the binding value {obj.value} should change to xyz,do you know
why this happen.
Thanks for your help.
Mark
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RE: [flexcoders] binding question?
Not if the VO is a dynamic object. What is it?
Tracy
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Mark Shen
Sent: Wednesday, April 30, 2008 3:21 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] binding question?
obj is a instance of VO(value object), do you think if the binding is
ok?
Thank
Mark
- Original Message
From: Tracy Spratt [EMAIL PROTECTED]
To: flexcoders@yahoogroups.com
Sent: Wednesday, April 30, 2008 3:19:33 PM
Subject: RE: [flexcoders] binding question?
Is obj type Object? Dynamic Object properties are not bindable.
Tracy
From: [EMAIL PROTECTED] ups.com [mailto:flexcoders@ yahoogroups. com]
On Behalf Of markflex2007
Sent: Wednesday, April 30, 2008 2:41 PM
To: [EMAIL PROTECTED] ups.com
Subject: [flexcoders] binding question?
I have two screens for testing.
a) I set object values in screen 1 (for instance obj.value =abc) and
go to screen 2
b) I show the value in screen 2 with binding (for instance mx:Label
x=37 y=46 text={obj.value} / and go to screen 1
it works fine when it excute first time.(from screen 1 to screen 2)
Afater I change from screen 2 to screen 1,the binding value
{obj.value} in screen 2 keep the previous value even if I change
the object values in screen 1 (for instance obj.value =xyz).
but the binding value {obj.value} should change to xyz,do you know
why this happen.
Thanks for your help.
Mark
Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try
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Re: [flexcoders] binding question?
I change the obj to static. problem fixed.Thanks
Mark
- Original Message
From: Tracy Spratt [EMAIL PROTECTED]
To: flexcoders@yahoogroups.com
Sent: Wednesday, April 30, 2008 4:17:34 PM
Subject: RE: [flexcoders] binding question?
Not if the VO is a dynamic object. What
is it?
Tracy
From:[EMAIL PROTECTED] ups.com [mailto:flexcoders@ yahoogroups. com] On Behalf
Of Mark Shen
Sent: Wednesday, April 30, 2008
3:21 PM
To: [EMAIL PROTECTED] ups.com
Subject: Re: [flexcoders] binding
question?
obj is a
instance of VO(value object), do you think if the binding is ok?
Thank
Mark
- Original Message
From: Tracy Spratt [EMAIL PROTECTED] com
To: [EMAIL PROTECTED] ups.com
Sent: Wednesday, April 30, 2008 3:19:33 PM
Subject: RE: [flexcoders] binding question?
Is “obj” type “Object”? Dynamic Object properties are not bindable.
Tracy
From:[EMAIL PROTECTED] ups.com [mailto:flexcoders@
yahoogroups. com] On Behalf Of markflex2007
Sent: Wednesday, April 30, 2008
2:41 PM
To: [EMAIL PROTECTED] ups.com
Subject: [flexcoders] binding
question?
I have
two screens for testing.
a) I set object values in screen 1 (for instance obj.value =abc)
and
go to screen 2
b) I show the value in screen 2 with binding (for instance mx:Label
x=37 y=46 text={obj.value} / and go to
screen 1
it works fine when it excute first time.(from screen 1 to screen 2)
Afater I change from screen 2 to screen 1,the binding value
{obj.value} in screen 2 keep the previous value even if I change
the object values in screen 1 (for instance obj.value =xyz).
but the binding value {obj.value} should change to xyz,do you know
why this happen.
Thanks for your help.
Mark
Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try
it now.
Be a better friend, newshound, and
know-it-all with Yahoo! Mobile. Try it now.
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[flexcoders] Binding question
I'm having problems with a binding issue. I'll dumb down my component
a bit in hopes to make this easier. I have a component, MyComponent,
based on Canvas. This Canvas has objects placed around in it and some
effects base on what the user clicks. The dynamic part is that there
is one spot in MyComponent where I can pass in an object for display.
code snippet of MyComponent:
mx:Canvas xmlns:mx=http://www.adobe.com/2006/mxml;
creationComplete=init()
mx:Script
![CDATA[
import mx.core.UIComponent;
[Bindable] public var itemComponent : UIComponent;
private function init() : void
{
if ( itemComponent != null )
{
addChildAt(itemComponent, numChildren);
}
}
So you can see I'm simply adding what ever I give to itemComponent as
the last object. That works just fine and when this is rendered I see
MyComponent as well as my dynamically added component. Here is the
problem. I'm adding a VBox with a Repeater that has it's dataProvider
bound to an ArrayCollection. When I modify the bound
ArrayCollection the view in MyComponent does not change. I moved the
VBox outside of MyComponent to make sure that it was behaving
correctly and it is. Changing the bound ArrayCollection changes the
VBox. As soon as I place it back into MyComponent, it does not change
any more.
Here is a code snippet of how I am creating MyComponent in mxml:
comps:MyComponent width=100%
comps:itemComponent
mx:VBox width=100% height=100%
mx:Repeater id=myRepeater dataProvider={myList}
mx:Text text={String(myRepeater.currentItem)}/
/mx:Repeater
/mx:VBox
/comps:itemComponent
/comps:MyComponent
Any advice on how to have the changes to the VBox (based on {myList})
update in MyComponent would be appreciated.
Thanks,
Dale
[flexcoders] Binding question
Hi all,
I dont know why, but the Flex compiler alerts some error when I try to
use binding with 2 arguments:
mx:VBox visible={someCombo.selectedIndex != 0
someOtherCombo.selectedIndex != 0}
...
/mx:VBox
And the error is : The entity name must immediately follow the '' in
the entity reference
Using a function, it works fine
mx:VBox visible={isThisVisible()}
...
/mx:VBox
where:
private function isThisVisible():Boolean {
if (someCombo.selectedIndex != 0 someOtherCombo.selectedIndex !=
0) return true;
else return false;
}
Why and how to solve this so I dont have to fill my code with these
functions?
--
Alberto Albericio Salvador
Aura S.A. Seguros
Departamento Informática
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[flexcoders] Binding question
Hi all,
When I bind a text label to the first position of an array like this :
mx:Label text={ ModelLocator.SOMEARRAY[0] } /
The text shows the first item of the array correctly.
When I add a new item to the array, the text of the label does not
change so it seems the binding is not really working.
I know Im adding items to the array correctly because I have a list
bound to ModelLocator.SOMEARRAY and it's working fine.
What am I doing wrong?
Thanks in advance
--
Alberto Albericio Salvador
Aura S.A. Seguros
Departamento Informática
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Re: [flexcoders] Binding question
I forgot to mention Im adding items at the beginning of the array, at
position 0. So the ModelLocator.SOMEARRAY[0] is always the last item added.
Alberto Albericio Salvador escribió:
Hi all,
When I bind a text label to the first position of an array like this :
mx:Label text={ ModelLocator.SOMEARRAY[0] } /
The text shows the first item of the array correctly.
When I add a new item to the array, the text of the label does not
change so it seems the binding is not really working.
I know Im adding items to the array correctly because I have a list
bound to ModelLocator.SOMEARRAY and it's working fine.
What am I doing wrong?
Thanks in advance
--
Alberto Albericio Salvador
Aura S.A. Seguros
Departamento Informática
Yahoo! Groups Sponsor ~--
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RE: [flexcoders] Binding question
Hi,
If you look at this link of Flex Documentation:
http://livedocs.macromedia.com/flex/15/flex_docs_en/0695.htm
You will find the following in the end:
Note: Array elements do not trigger ChangeEvents and, therefore, cannot
function as binding sources at runtime. Binding copies initial values during
instantiation after variables are declared in an mx:Script tag, but before
handlers are executed. Arrays that are bound do not stay updated if individual
fields of a source Array change.
I don't remember the exact workaround of this problem, please check the
flexcoders archive I am sure this has been dicussed many times. Also check the
FAQ, I think it might be there also.
FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt
Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com
-abdul
-Original Message-
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Alberto
Albericio Salvador
Sent: Tuesday, September 06, 2005 8:08 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Binding question
Hi all,
When I bind a text label to the first position of an array like this :
mx:Label text={ ModelLocator.SOMEARRAY[0] } /
The text shows the first item of the array correctly.
When I add a new item to the array, the text of the label does not
change so it seems the binding is not really working.
I know Im adding items to the array correctly because I have a list
bound to ModelLocator.SOMEARRAY and it's working fine.
What am I doing wrong?
Thanks in advance
--
Alberto Albericio Salvador
Aura S.A. Seguros
Departamento Informática
--
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Re: [flexcoders] Binding question
Indeed... I thought this was basic binding so I didnt look at any
documentation... I more thought it was a bug :)
Thanks anyway for the answer Abdul
Abdul Qabiz escribió:
Hi,
If you look at this link of Flex Documentation:
http://livedocs.macromedia.com/flex/15/flex_docs_en/0695.htm
You will find the following in the end:
Note: Array elements do not trigger ChangeEvents and, therefore, cannot
function as binding sources at runtime. Binding copies initial values during
instantiation after variables are declared in an mx:Script tag, but before
handlers are executed. Arrays that are bound do not stay updated if individual
fields of a source Array change.
I don't remember the exact workaround of this problem, please check the
flexcoders archive I am sure this has been dicussed many times. Also check the
FAQ, I think it might be there also.
FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt
Search Archives: http://www.mail-archive.com/flexcoders%40yahoogroups.com
-abdul
-Original Message-
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of
Alberto Albericio Salvador
Sent: Tuesday, September 06, 2005 8:08 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Binding question
Hi all,
When I bind a text label to the first position of an array like this :
mx:Label text={ ModelLocator.SOMEARRAY[0] } /
The text shows the first item of the array correctly.
When I add a new item to the array, the text of the label does not
change so it seems the binding is not really working.
I know Im adding items to the array correctly because I have a list
bound to ModelLocator.SOMEARRAY and it's working fine.
What am I doing wrong?
Thanks in advance
--
Alberto Albericio Salvador
Aura S.A. Seguros
Departamento Informática
Yahoo! Groups Sponsor ~--
Get Bzzzy! (real tools to help you find a job). Welcome to the Sweet Life.
http://us.click.yahoo.com/A77XvD/vlQLAA/TtwFAA/nhFolB/TM
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Re: [flexcoders] Binding question
On 9/6/05, Abdul Qabiz [EMAIL PROTECTED] wrote:
If you look at this link of Flex Documentation:
http://livedocs.macromedia.com/flex/15/flex_docs_en/0695.htm
You will find the following in the end:
Note: Array elements do not trigger ChangeEvents and, therefore, cannot
function as binding sources at runtime. Binding copies initial values during
instantiation after variables are declared in an mx:Script tag, but before
handlers are executed. Arrays that are bound do not stay updated if
individual fields of a source Array change.
Actually I think this is about binding to the entire array:
prop={array}
Alberto is binding to a single element, so this rule shouldn't apply
in that case.
prop={array[0]}
:-/
I'm in the middle of a build and my machine is extremely slow now,
but, Alberto, can you look at the generated AS source for binding to a
normal variable versus binding to an array element, to see if there's
any difference in the way they are treated? Might give clues.
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Re: [flexcoders] Binding question
You just hit on a problem I had a week ago. It looks like the wsdl
attribute cannot be set at runtime. I even tried doing it in
actionscript with no luck. This is problematic for me because I want
to be able to declare all of my web service urls globally so they can
be changed easily. I finally had to resort to making them Named web
service declared in the flex config file. This works for me but its
less than ideal. If there is some way to dynamically set the wsdl
attribute, I'd also be very interested in knowing how.
Thanks!
-- Matthew
On Wed, 23 Mar 2005 20:22:41 -, pilby1 [EMAIL PROTECTED] wrote:
I have web services in my application, and I wanted to bind the value
of the wsdl attribute of a mx:WebService tag, but I'm having
difficulty.
I have my model like this:
mx:Model id=webServicesURLs
ws1http://someURL?wsdl/ws1
/mx:Model
Then in my web service, I have:
mx:WebService id=myWebService wsdl={webServicesURLs.ws1} ... etc.
But upon application startup, I'm getting an alert box error message
from the application saying Could not load WSDL, 404, /myApp/
{myWebServiceURLs.ws1}.
It seems like it's trying to get the WSDL prior to substituting the
value from my data model, which explains why it couldn't get the WSDL.
How can I then make my wsdl attribute in my mx:WebService a
variable?
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