Re: [flexcoders] observing a model change in cairngorm
Could you explain how a little? If I have a Class Foo containing a
ArrayCollection of Goo classes and Goo has a ArrayCollection of Hoo classes
and I change one of the Hoo instances, my bindings to Foo will not fire.
Seems my bindings to one of the Goos will thugh. Its as if the change
events are firing up one level only. How to get the top level object to
fire change events if its lowliest memeber changes?
DK
On 2/20/07, Battershall, Jeff [EMAIL PROTECTED] wrote:
I've had pretty good luck using mx.binding.utils.ChangeWatcher to map a
change event in data to a defined function, thereby allowing me to control
the response to the change event.
Jeff
-Original Message-
*From:* flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] *On
Behalf Of *Gareth Edwards
*Sent:* Sunday, February 18, 2007 4:46 PM
*To:* flexcoders@yahoogroups.com
*Subject:* Re: [flexcoders] observing a model change in cairngorm
Typically a binding like the one described will only execute if the actual
property changes, and not its children.
So, if need be, you can do something like this to make sure the binding
executes.
model.someData = new ArrayCollection(mysomeDataArray);
Many ways to do what you might need, just getting the best solution for
you (or maybe best practices?).
But I think Flex and some best practices is a little up in the air still.
So, find something that works for you and go with it I reckon.
An Observer works nicely to.
Cheers
Gareth.
[EMAIL PROTECTED]
Grant Davies wrote:
Thanks Dimitrios..
Question is when the Model.someData changes, will my set dataProvider
function be called again ? During my testing it appeared to be called
when it was first run, but when the model changed the setProvider
function was never called again...
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED]://www.bluetube.com/bti
-Original Message-
From: flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com
flexcoders@yahoogroups.com] On
Behalf Of Dimitrios Gianninas
Sent: Sunday, February 18, 2007 11:24 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] observing a model change in cairngorm
One way to do it is for the ChartView to manipulate the data as it
wishes. So have a setter in the ChartView MXML like so:
bla:ChartView dataProvider={ModelLocator.someData}/
And inside the view it looks like so:
mx:Box
mx:Script
public function set dataProvider( values:XML ):void {
... do stuff here
}
/mx:Script
... view stuff here ...
/mx:Box
Dimitrios Gianninas
Optimal Payments Inc.
-Original Message-
From: flexcoders@yahoogroups.com on behalf of Grant Davies
Sent: Sat 2/17/2007 5:57 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] observing a model change in cairngorm
gareth,
thanks for the response... I think my concern is poluting the model with
view specific data...
The results of a command is xml and this is set in the model which is an
as class (VisitorModel) , the chart bound to the model via its data
provider.
when the app first starts up, I don't have any xml, a user picks a date
range, I hit a web service and get valid xml back, then the chart has
to has create a column series based on some labels in the xml, so I
need to know when the xml has changed so that the column series can be
created and the chart updated.
In your example below, does the buildJobsTree just manipulate the data
or does it actually do something to the view ?
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED]://www.bluetube.com/bti http://www.bluetube.com/bti
http://www.bluetube.com/bti A Tribal
Chicken Designs Affiliate http://www.tribalchicken.com/
http://www.tribalchicken.com/
From: flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com
flexcoders@yahoogroups.com] On
Behalf Of Gareth Edwards
Sent: Saturday, February 17, 2007 5:43 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] observing a model change in cairngorm
Why not define an as class for your model (if you aren't already), and
define a separate variable that you can populate on the other data being
set?
The snippet I posted is from something I've done that looks like
this
public function set jobs (data:ArrayCollection data:ArrayCollection )
: void
{
_jobs = data;
buildJobsTree(_jobs);
}
Not sure if its the best option.. but it certainly works for me.
Either that, or there are some observer classes from Adobe Consulting
that allow you to watch changes to your model from the UI.
Cheers
Gareth.
Grant Davies wrote:
Thanks gareth..
the model is used by multiple views, a grid and a chart, the
chart needs the xml from the model manipulated
RE: [flexcoders] observing a model change in cairngorm
I've had pretty good luck using mx.binding.utils.ChangeWatcher to map a
change event in data to a defined function, thereby allowing me to
control the response to the change event.
Jeff
-Original Message-
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Gareth Edwards
Sent: Sunday, February 18, 2007 4:46 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] observing a model change in cairngorm
Typically a binding like the one described will only execute if
the actual property changes, and not its children.
So, if need be, you can do something like this to make sure the
binding executes.
model.someData = new ArrayCollection(mysomeDataArray);
Many ways to do what you might need, just getting the best
solution for you (or maybe best practices?).
But I think Flex and some best practices is a little up in the
air still. So, find something that works for you and go with it I
reckon.
An Observer works nicely to.
Cheers
Gareth.
[EMAIL PROTECTED]
Grant Davies wrote:
Thanks Dimitrios..
Question is when the Model.someData changes, will my set
dataProvider
function be called again ? During my testing it
appeared to be called
when it was first run, but when the model changed the
setProvider
function was never called again...
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED]
http://www.bluetube.com/bti
-Original Message-
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On
Behalf Of Dimitrios Gianninas
Sent: Sunday, February 18, 2007 11:24 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] observing a model change in
cairngorm
One way to do it is for the ChartView to manipulate the
data as it
wishes. So have a setter in the ChartView MXML like so:
bla:ChartView dataProvider={ModelLocator.someData}/
And inside the view it looks like so:
mx:Box
mx:Script
public function set dataProvider( values:XML ):void {
... do stuff here
}
/mx:Script
... view stuff here ...
/mx:Box
Dimitrios Gianninas
Optimal Payments Inc.
-Original Message-
From: flexcoders@yahoogroups.com on behalf of Grant
Davies
Sent: Sat 2/17/2007 5:57 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] observing a model change in
cairngorm
gareth,
thanks for the response... I think my concern is
poluting the model with
view specific data...
The results of a command is xml and this is set in the
model which is an
as class (VisitorModel) , the chart bound to the model
via its data
provider.
when the app first starts up, I don't have any xml, a
user picks a date
range, I hit a web service and get valid xml back, then
the chart has
to has create a column series based on some labels in
the xml, so I
need to know when the xml has changed so that the column
series can be
created and the chart updated.
In your example below, does the buildJobsTree just
manipulate the data
or does it actually do something to the view ?
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL
RE: [flexcoders] observing a model change in cairngorm
One way to do it is for the ChartView to manipulate the data as it wishes. So
have a setter in the ChartView MXML like so:
bla:ChartView dataProvider={ModelLocator.someData}/
And inside the view it looks like so:
mx:Box
mx:Script
public function set dataProvider( values:XML ):void {
... do stuff here
}
/mx:Script
... view stuff here ...
/mx:Box
Dimitrios Gianninas
Optimal Payments Inc.
-Original Message-
From: flexcoders@yahoogroups.com on behalf of Grant Davies
Sent: Sat 2/17/2007 5:57 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] observing a model change in cairngorm
gareth,
thanks for the response... I think my concern is poluting the model with
view specific data...
The results of a command is xml and this is set in the model which is an
as class (VisitorModel) , the chart bound to the model via its data
provider.
when the app first starts up, I don't have any xml, a user picks a date
range, I hit a web service and get valid xml back, then the chart has
to has create a column series based on some labels in the xml, so I
need to know when the xml has changed so that the column series can be
created and the chart updated.
In your example below, does the buildJobsTree just manipulate the data
or does it actually do something to the view ?
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED]
http://www.bluetube.com/bti http://www.bluetube.com/bti
A Tribal Chicken Designs Affiliate http://www.tribalchicken.com/
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Gareth Edwards
Sent: Saturday, February 17, 2007 5:43 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] observing a model change in cairngorm
Why not define an as class for your model (if you aren't already), and
define a separate variable that you can populate on the other data being
set?
The snippet I posted is from something I've done that looks like
this
public function set jobs (data:ArrayCollection data:ArrayCollection )
: void
{
_jobs = data;
buildJobsTree(_jobs);
}
Not sure if its the best option.. but it certainly works for me.
Either that, or there are some observer classes from Adobe Consulting
that allow you to watch changes to your model from the UI.
Cheers
Gareth.
Grant Davies wrote:
Thanks gareth..
the model is used by multiple views, a grid and a chart, the
chart needs the xml from the model manipulated a little differently than
the grid does...
grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]
http://www.bluetube.com/bti http://www.bluetube.com/bti
A Tribal Chicken Designs Affiliate
http://www.tribalchicken.com/
From: flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com ] On Behalf Of Gareth Edwards
Sent: Saturday, February 17, 2007 4:32 PM
To: flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com
Subject: Re: [flexcoders] observing a model change in cairngorm
Why not use a setter in your model and do the work there?
public function set jobs (data:ArrayCollection
data:ArrayCollection ) : void
{
// Custom logic here?
_jobs = data;
}
Cheers
Gareth.
Grant Davies wrote:
Hi guys, I've got my view, model, commands and delegate
all running and my view contains a chart.
When the model changes for my chart data I need to work
the data a little and can't just directly use the binding.
do I
1) change my command to fire an event when the model has
been updated
2) Is there some way I can observe a model change and
then kick of my data work a little and not directly bind the chart to
the model ?
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]
http://www.bluetube.com/bti
http://www.bluetube.com/bti
A Tribal Chicken Designs Affiliate
http
RE: [flexcoders] observing a model change in cairngorm
Thanks Dimitrios..
Question is when the Model.someData changes, will my set dataProvider
function be called again ? During my testing it appeared to be called
when it was first run, but when the model changed the setProvider
function was never called again...
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED]
http://www.bluetube.com/bti
-Original Message-
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Dimitrios Gianninas
Sent: Sunday, February 18, 2007 11:24 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] observing a model change in cairngorm
One way to do it is for the ChartView to manipulate the data as it
wishes. So have a setter in the ChartView MXML like so:
bla:ChartView dataProvider={ModelLocator.someData}/
And inside the view it looks like so:
mx:Box
mx:Script
public function set dataProvider( values:XML ):void {
... do stuff here
}
/mx:Script
... view stuff here ...
/mx:Box
Dimitrios Gianninas
Optimal Payments Inc.
-Original Message-
From: flexcoders@yahoogroups.com on behalf of Grant Davies
Sent: Sat 2/17/2007 5:57 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] observing a model change in cairngorm
gareth,
thanks for the response... I think my concern is poluting the model with
view specific data...
The results of a command is xml and this is set in the model which is an
as class (VisitorModel) , the chart bound to the model via its data
provider.
when the app first starts up, I don't have any xml, a user picks a date
range, I hit a web service and get valid xml back, then the chart has
to has create a column series based on some labels in the xml, so I
need to know when the xml has changed so that the column series can be
created and the chart updated.
In your example below, does the buildJobsTree just manipulate the data
or does it actually do something to the view ?
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED]
http://www.bluetube.com/bti http://www.bluetube.com/bti A Tribal
Chicken Designs Affiliate http://www.tribalchicken.com/
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Gareth Edwards
Sent: Saturday, February 17, 2007 5:43 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] observing a model change in cairngorm
Why not define an as class for your model (if you aren't already), and
define a separate variable that you can populate on the other data being
set?
The snippet I posted is from something I've done that looks like
this
public function set jobs (data:ArrayCollection data:ArrayCollection )
: void
{
_jobs = data;
buildJobsTree(_jobs);
}
Not sure if its the best option.. but it certainly works for me.
Either that, or there are some observer classes from Adobe Consulting
that allow you to watch changes to your model from the UI.
Cheers
Gareth.
Grant Davies wrote:
Thanks gareth..
the model is used by multiple views, a grid and a chart, the
chart needs the xml from the model manipulated a little differently than
the grid does...
grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]
http://www.bluetube.com/bti http://www.bluetube.com/bti
A Tribal Chicken Designs Affiliate
http://www.tribalchicken.com/
From: flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com ] On Behalf Of Gareth Edwards
Sent: Saturday, February 17, 2007 4:32 PM
To: flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com
Subject: Re: [flexcoders] observing a model change in cairngorm
Why not use a setter in your model and do the work there?
public function set jobs (data:ArrayCollection
data:ArrayCollection ) : void
{
// Custom logic here?
_jobs = data;
}
Cheers
Gareth.
Grant Davies wrote:
Hi guys, I've got my view, model, commands and delegate
all running and my view contains a chart.
When the model changes for my chart data I need to work
the data a little and can't just directly use the binding.
do I
1) change my
RE: [flexcoders] observing a model change in cairngorm
Yes it should assuming that the variable of the entire class has the [Bindable]
metadata tag specified.
Dimitrios Gianninas
Optimal Payments Inc.
-Original Message-
From: flexcoders@yahoogroups.com on behalf of Grant Davies
Sent: Sun 2/18/2007 11:30 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] observing a model change in cairngorm
Thanks Dimitrios..
Question is when the Model.someData changes, will my set dataProvider
function be called again ? During my testing it appeared to be called
when it was first run, but when the model changed the setProvider
function was never called again...
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED]
http://www.bluetube.com/bti
-Original Message-
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Dimitrios Gianninas
Sent: Sunday, February 18, 2007 11:24 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] observing a model change in cairngorm
One way to do it is for the ChartView to manipulate the data as it
wishes. So have a setter in the ChartView MXML like so:
bla:ChartView dataProvider={ModelLocator.someData}/
And inside the view it looks like so:
mx:Box
mx:Script
public function set dataProvider( values:XML ):void {
... do stuff here
}
/mx:Script
... view stuff here ...
/mx:Box
Dimitrios Gianninas
Optimal Payments Inc.
-Original Message-
From: flexcoders@yahoogroups.com on behalf of Grant Davies
Sent: Sat 2/17/2007 5:57 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] observing a model change in cairngorm
gareth,
thanks for the response... I think my concern is poluting the model with
view specific data...
The results of a command is xml and this is set in the model which is an
as class (VisitorModel) , the chart bound to the model via its data
provider.
when the app first starts up, I don't have any xml, a user picks a date
range, I hit a web service and get valid xml back, then the chart has
to has create a column series based on some labels in the xml, so I
need to know when the xml has changed so that the column series can be
created and the chart updated.
In your example below, does the buildJobsTree just manipulate the data
or does it actually do something to the view ?
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED]
http://www.bluetube.com/bti http://www.bluetube.com/bti A Tribal
Chicken Designs Affiliate http://www.tribalchicken.com/
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Gareth Edwards
Sent: Saturday, February 17, 2007 5:43 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] observing a model change in cairngorm
Why not define an as class for your model (if you aren't already), and
define a separate variable that you can populate on the other data being
set?
The snippet I posted is from something I've done that looks like
this
public function set jobs (data:ArrayCollection data:ArrayCollection )
: void
{
_jobs = data;
buildJobsTree(_jobs);
}
Not sure if its the best option.. but it certainly works for me.
Either that, or there are some observer classes from Adobe Consulting
that allow you to watch changes to your model from the UI.
Cheers
Gareth.
Grant Davies wrote:
Thanks gareth..
the model is used by multiple views, a grid and a chart, the
chart needs the xml from the model manipulated a little differently than
the grid does...
grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]
http://www.bluetube.com/bti http://www.bluetube.com/bti
A Tribal Chicken Designs Affiliate
http://www.tribalchicken.com/
From: flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com ] On Behalf Of Gareth Edwards
Sent: Saturday, February 17, 2007 4:32 PM
To: flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com
Subject: Re: [flexcoders] observing a model change in cairngorm
Why not use a setter in your model and do the work there?
public function set jobs (data:ArrayCollection
data:ArrayCollection ) : void
{
// Custom logic here?
_jobs = data;
}
Cheers
Gareth.
Grant
RE: [flexcoders] observing a model change in cairngorm
Thanks gareth..
the model is used by multiple views, a grid and a chart, the chart needs
the xml from the model manipulated a little differently than the grid
does...
grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED]
http://www.bluetube.com/bti http://www.bluetube.com/bti
A Tribal Chicken Designs Affiliate http://www.tribalchicken.com/
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Gareth Edwards
Sent: Saturday, February 17, 2007 4:32 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] observing a model change in cairngorm
Why not use a setter in your model and do the work there?
public function set jobs (data:ArrayCollection data:ArrayCollection )
: void
{
// Custom logic here?
_jobs = data;
}
Cheers
Gareth.
Grant Davies wrote:
Hi guys, I've got my view, model, commands and delegate all
running and my view contains a chart.
When the model changes for my chart data I need to work the data
a little and can't just directly use the binding.
do I
1) change my command to fire an event when the model has been
updated
2) Is there some way I can observe a model change and then kick
of my data work a little and not directly bind the chart to the model
?
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]
http://www.bluetube.com/bti http://www.bluetube.com/bti
A Tribal Chicken Designs Affiliate
http://www.tribalchicken.com/
attachment: small.jpg
attachment: ATT13003169.jpg
Re: [flexcoders] observing a model change in cairngorm
Hi Grant
Can't you use a binding function?
dataProvider={ massageData( ModelLocator.getInstance().myData ) }
Cheers
Ralf.
On 2/17/07, Gareth Edwards [EMAIL PROTECTED] wrote:
Why not define an as class for your model (if you aren't already), and
define a separate variable that you can populate on the other data being
set?
The snippet I posted is from something I've done that looks like this
public function set jobs (data:ArrayCollection) : void
{
_jobs = data;
buildJobsTree(_jobs);
}
Not sure if its the best option.. but it certainly works for me.
Either that, or there are some observer classes from Adobe Consulting that
allow you to watch changes to your model from the UI.
Cheers
Gareth.
Grant Davies wrote:
Thanks gareth..
the model is used by multiple views, a grid and a chart, the chart needs
the xml from the model manipulated a little differently than the grid
does...
grant
...
*› b l u e t u b e i n t e r a c t i v e.*
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
› [EMAIL PROTECTED]
› http://www.bluetube.com/bti
› A Tribal Chicken Designs Affiliate http://www.tribalchicken.com/
--
*From:* flexcoders@yahoogroups.com
[mailto:flexcoders@yahoogroups.comflexcoders@yahoogroups.com]
*On Behalf Of *Gareth Edwards
*Sent:* Saturday, February 17, 2007 4:32 PM
*To:* flexcoders@yahoogroups.com
*Subject:* Re: [flexcoders] observing a model change in cairngorm
Why not use a setter in your model and do the work there?
public function set jobs (data:ArrayCollection) : void
{
// Custom logic here?
_jobs = data;
}
Cheers
Gareth.
Grant Davies wrote:
Hi guys, I've got my view, model, commands and delegate all running and my
view contains a chart.
When the model changes for my chart data I need to work the data a little
and can't just directly use the binding.
do I
1) change my command to fire an event when the model has been updated
2) Is there some way I can observe a model change and then kick of my
data work a little and not directly bind the chart to the model ?
Grant
...
*› b l u e t u b e i n t e r a c t i v e.*
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
› [EMAIL PROTECTED]
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--
Ralf Bokelberg [EMAIL PROTECTED]
Flex Flash Consultant based in Cologne/Germany
Phone +49 (0) 221 530 15 35
RE: [flexcoders] observing a model change in cairngorm
gareth,
thanks for the response... I think my concern is poluting the model with
view specific data...
The results of a command is xml and this is set in the model which is an
as class (VisitorModel) , the chart bound to the model via its data
provider.
when the app first starts up, I don't have any xml, a user picks a date
range, I hit a web service and get valid xml back, then the chart has
to has create a column series based on some labels in the xml, so I
need to know when the xml has changed so that the column series can be
created and the chart updated.
In your example below, does the buildJobsTree just manipulate the data
or does it actually do something to the view ?
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED]
http://www.bluetube.com/bti http://www.bluetube.com/bti
A Tribal Chicken Designs Affiliate http://www.tribalchicken.com/
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Gareth Edwards
Sent: Saturday, February 17, 2007 5:43 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] observing a model change in cairngorm
Why not define an as class for your model (if you aren't already), and
define a separate variable that you can populate on the other data being
set?
The snippet I posted is from something I've done that looks like
this
public function set jobs (data:ArrayCollection data:ArrayCollection )
: void
{
_jobs = data;
buildJobsTree(_jobs);
}
Not sure if its the best option.. but it certainly works for me.
Either that, or there are some observer classes from Adobe Consulting
that allow you to watch changes to your model from the UI.
Cheers
Gareth.
Grant Davies wrote:
Thanks gareth..
the model is used by multiple views, a grid and a chart, the
chart needs the xml from the model manipulated a little differently than
the grid does...
grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]
http://www.bluetube.com/bti http://www.bluetube.com/bti
A Tribal Chicken Designs Affiliate
http://www.tribalchicken.com/
From: flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com ] On Behalf Of Gareth Edwards
Sent: Saturday, February 17, 2007 4:32 PM
To: flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com
Subject: Re: [flexcoders] observing a model change in cairngorm
Why not use a setter in your model and do the work there?
public function set jobs (data:ArrayCollection
data:ArrayCollection ) : void
{
// Custom logic here?
_jobs = data;
}
Cheers
Gareth.
Grant Davies wrote:
Hi guys, I've got my view, model, commands and delegate
all running and my view contains a chart.
When the model changes for my chart data I need to work
the data a little and can't just directly use the binding.
do I
1) change my command to fire an event when the model has
been updated
2) Is there some way I can observe a model change and
then kick of my data work a little and not directly bind the chart to
the model ?
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]
http://www.bluetube.com/bti
http://www.bluetube.com/bti
A Tribal Chicken Designs Affiliate
http://www.tribalchicken.com/
attachment: small.jpg
attachment: ATT13006568.jpg
attachment: ATT13006569.jpg
RE: [flexcoders] observing a model change in cairngorm
I tried that and its only called ONCE as you're binding to a function
that manipulates the data.
when the data in - ModelLocator.getInstance().myData changes there is
nothing bound to it, since you bound to the function massage data and
not the actual data in the model...
does that make any sense ?
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED]
http://www.bluetube.com/bti http://www.bluetube.com/bti
A Tribal Chicken Designs Affiliate http://www.tribalchicken.com/
From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Ralf Bokelberg
Sent: Saturday, February 17, 2007 5:54 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] observing a model change in cairngorm
Hi Grant
Can't you use a binding function?
dataProvider={ massageData( ModelLocator.getInstance().myData ) }
Cheers
Ralf.
On 2/17/07, Gareth Edwards [EMAIL PROTECTED]
mailto:[EMAIL PROTECTED] wrote:
Why not define an as class for your model (if you aren't
already), and define a separate variable that you can populate on the
other data being set?
The snippet I posted is from something I've done that looks like
this
public function set jobs (data:ArrayCollection) : void
{
_jobs = data;
buildJobsTree(_jobs);
}
Not sure if its the best option.. but it certainly works for me.
Either that, or there are some observer classes from Adobe
Consulting that allow you to watch changes to your model from the UI.
Cheers
Gareth.
Grant Davies wrote:
Thanks gareth..
the model is used by multiple views, a grid and a chart,
the chart needs the xml from the model manipulated a little differently
than the grid does...
grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]
http://www.bluetube.com/bti
http://www.bluetube.com/bti
A Tribal Chicken Designs Affiliate
http://www.tribalchicken.com/
From: flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com [ mailto:flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com ] On Behalf Of Gareth Edwards
Sent: Saturday, February 17, 2007 4:32 PM
To: flexcoders@yahoogroups.com
mailto:flexcoders@yahoogroups.com
Subject: Re: [flexcoders] observing a model change in
cairngorm
Why not use a setter in your model and do the work
there?
public function set jobs (data:ArrayCollection) : void
{
// Custom logic here?
_jobs = data;
}
Cheers
Gareth.
Grant Davies wrote:
Hi guys, I've got my view, model, commands and
delegate all running and my view contains a chart.
When the model changes for my chart data I need
to work the data a little and can't just directly use the binding.
do I
1) change my command to fire an event when the
model has been updated
2) Is there some way I can observe a model
change and then kick of my data work a little and not directly bind
the chart to the model ?
Grant
...
b l u e t u b e i n t e r a c t i v e.
.: grant davies
.: 404.428.6839 (c)
.: 708-983-1577 (F)
[EMAIL PROTECTED] mailto:[EMAIL PROTECTED]
http://www.bluetube.com/bti
http://www.bluetube.com/bti
A Tribal Chicken Designs Affiliate
http://www.tribalchicken.com/
--
Ralf Bokelberg [EMAIL PROTECTED]
mailto:[EMAIL PROTECTED]
Flex Flash Consultant based
