[flexcoders] Re: Custom List ItemRenderer / Recycling troubles (height incorrect)
Hi,
Set the List's variableRowHeight=true and use something like this in
the itemRenderer:
override protected function measure():void
{
var textLineMetrics:TextLineMetrics = comment.measureText(
comment.text );
// should add paddingTop, paddingBottom and verticalGap to this too
measuredHeight = textLineMetrics.height + myLinkButton.height;
}
-TH
--- In flexcoders@yahoogroups.com, Tracy Spratt tr...@... wrote:
Sorry, no magic sauce here. I had some pixie dust somewhere, but. Was
it
Asimov or Clark that said, Any sufficiently advanced technology is
indistinguishable from magic?
When I needed a variable height renderer, I copied ListItemRenderer
and
modified to my needs. That was the only way I could get it to work. It
is
also *much* more performant than a container based renderer. The magic
is
indeed in the measure() function.
If you do not have a lot of items to renderer, Repeater works well
with
variable heights.
Tracy Spratt,
Lariat Services, development services available
_
From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com]
On
Behalf Of wubac1
Sent: Saturday, April 18, 2009 2:02 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Custom List ItemRenderer / Recycling troubles
(height
incorrect)
I'm attempting to create a very simple item renderer for mx:List. I've
found
that when the dataProvider is static, there are no problems with the
custom
item
renderer. However, when the dataProvider is dynamic, the height of the
item
renderer is not correct (and scroll bars appear for each renderer with
any
meaningful # of rows). I've set variableRowHeight=true for the List.
I've
also tried overriding the measure function and invaliding the size
when a
dataChange event is dispatched (based on information provided on
FlexCoders
in previous discussions along these lines).
CommentRenderer.mxml:
?xml version=1.0 encoding=utf-8?
mx:VBox xmlns:mx=http://www.adobe. http://www.adobe.com/2006/mxml
com/2006/mxml width=100%
mx:Script
![CDATA[
override protected function measure():void
{
super.measure();
measuredHeight = comment.textHeight;
}
]]
/mx:Script
mx:LinkButton label={data.commenter.name}/
mx:Text id=comment width=100% text={data.comment}
dataChange=invalidateSize()/
/mx:VBox
The mx:List definition:
mx:List id=comments itemRenderer=com.test.CommentRenderer
width=100%
height=100%/
I've looked over the ListItemRenderer, but have so far been unable to
glean
the
magic sauce that makes the item renderer function correctly when the
control
recycles. Can someone explain / provide a functional example(s) with
mx:Text
(ActionScript and MXML examples preferred, for completeness)?
[flexcoders] Re: Custom List ItemRenderer / Recycling troubles (height incorrect)
Tracy, I have to agree. I was able to get a fully functional item renderer
based on ListItemRenderer. However, in theory, one should be able to do it in
MXML. With that in mind, I replaced the UITextField with mx:Text. It's
probably not surprising to many that the renderer does not behave as expected
anymore. The height issue appears to be tied to the component in some fashion.
I'd file a defect but I haven't seen much ROI in such reports.
--- In flexcoders@yahoogroups.com, Tracy Spratt tr...@... wrote:
Sorry, no magic sauce here. I had some pixie dust somewhere, but. Was it
Asimov or Clark that said, Any sufficiently advanced technology is
indistinguishable from magic?
When I needed a variable height renderer, I copied ListItemRenderer and
modified to my needs. That was the only way I could get it to work. It is
also *much* more performant than a container based renderer. The magic is
indeed in the measure() function.
If you do not have a lot of items to renderer, Repeater works well with
variable heights.
Tracy Spratt,
Lariat Services, development services available
_
From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On
Behalf Of wubac1
Sent: Saturday, April 18, 2009 2:02 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Custom List ItemRenderer / Recycling troubles (height
incorrect)
I'm attempting to create a very simple item renderer for mx:List. I've found
that when the dataProvider is static, there are no problems with the custom
item
renderer. However, when the dataProvider is dynamic, the height of the item
renderer is not correct (and scroll bars appear for each renderer with any
meaningful # of rows). I've set variableRowHeight=true for the List. I've
also tried overriding the measure function and invaliding the size when a
dataChange event is dispatched (based on information provided on FlexCoders
in previous discussions along these lines).
CommentRenderer.mxml:
?xml version=1.0 encoding=utf-8?
mx:VBox xmlns:mx=http://www.adobe. http://www.adobe.com/2006/mxml
com/2006/mxml width=100%
mx:Script
![CDATA[
override protected function measure():void
{
super.measure();
measuredHeight = comment.textHeight;
}
]]
/mx:Script
mx:LinkButton label={data.commenter.name}/
mx:Text id=comment width=100% text={data.comment}
dataChange=invalidateSize()/
/mx:VBox
The mx:List definition:
mx:List id=comments itemRenderer=com.test.CommentRenderer width=100%
height=100%/
I've looked over the ListItemRenderer, but have so far been unable to glean
the
magic sauce that makes the item renderer function correctly when the control
recycles. Can someone explain / provide a functional example(s) with mx:Text
(ActionScript and MXML examples preferred, for completeness)?
[flexcoders] Re: Custom List ItemRenderer / Recycling troubles (height incorrect)
Tim, I have been using the variableRowHeight (see my original example). Also,
one should not need to replicate the measure of mx:Text. Your example
disregards internal padding elements of the Text component. I did try
setActualSize combined with getExplicitOrMeasuredHeight, but that only works in
ActionScript. I encourage you to try and create a functional example. I'm
fairly confident at this point that you will not get one working in MXML with
mx:Text (multi-line).
I was able to get a fully functional item renderer based on ListItemRenderer,
which uses UITextField. However, in theory, one should be able to do it in
MXML. With that in mind, I replaced the UITextField of my ActionScript-based
renderer with mx:Text. It's probably not surprising to many that the renderer
no longer behaves as expected. The height issue appears to be tied to the
component in some fashion (mx:Text in this case). I'd file a defect but I
haven't seen much ROI in such reports.
--- In flexcoders@yahoogroups.com, Tim Hoff timh...@... wrote:
Hi,
Set the List's variableRowHeight=true and use something like this in
the itemRenderer:
override protected function measure():void
{
var textLineMetrics:TextLineMetrics = comment.measureText(
comment.text );
// should add paddingTop, paddingBottom and verticalGap to this too
measuredHeight = textLineMetrics.height + myLinkButton.height;
}
-TH
--- In flexcoders@yahoogroups.com, Tracy Spratt tracy@ wrote:
Sorry, no magic sauce here. I had some pixie dust somewhere, but. Was
it
Asimov or Clark that said, Any sufficiently advanced technology is
indistinguishable from magic?
When I needed a variable height renderer, I copied ListItemRenderer
and
modified to my needs. That was the only way I could get it to work. It
is
also *much* more performant than a container based renderer. The magic
is
indeed in the measure() function.
If you do not have a lot of items to renderer, Repeater works well
with
variable heights.
Tracy Spratt,
Lariat Services, development services available
_
From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com]
On
Behalf Of wubac1
Sent: Saturday, April 18, 2009 2:02 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Custom List ItemRenderer / Recycling troubles
(height
incorrect)
I'm attempting to create a very simple item renderer for mx:List. I've
found
that when the dataProvider is static, there are no problems with the
custom
item
renderer. However, when the dataProvider is dynamic, the height of the
item
renderer is not correct (and scroll bars appear for each renderer with
any
meaningful # of rows). I've set variableRowHeight=true for the List.
I've
also tried overriding the measure function and invaliding the size
when a
dataChange event is dispatched (based on information provided on
FlexCoders
in previous discussions along these lines).
CommentRenderer.mxml:
?xml version=1.0 encoding=utf-8?
mx:VBox xmlns:mx=http://www.adobe. http://www.adobe.com/2006/mxml
com/2006/mxml width=100%
mx:Script
![CDATA[
override protected function measure():void
{
super.measure();
measuredHeight = comment.textHeight;
}
]]
/mx:Script
mx:LinkButton label={data.commenter.name}/
mx:Text id=comment width=100% text={data.comment}
dataChange=invalidateSize()/
/mx:VBox
The mx:List definition:
mx:List id=comments itemRenderer=com.test.CommentRenderer
width=100%
height=100%/
I've looked over the ListItemRenderer, but have so far been unable to
glean
the
magic sauce that makes the item renderer function correctly when the
control
recycles. Can someone explain / provide a functional example(s) with
mx:Text
(ActionScript and MXML examples preferred, for completeness)?
[flexcoders] Re: Custom List ItemRenderer / Recycling troubles (height incorrect)
Hi,
Yes, after playing with it a little, you're correct; my suggestion only
works in AS. Sorry, I always extend UIComponent for itemRenderers that
need to have a variableRowHeight.
BTW, in the future, please sign your posts; so that we can put a name to
your warm and positive comments.
-TH
--- In flexcoders@yahoogroups.com, wubac1 wub...@... wrote:
Tim, I have been using the variableRowHeight (see my original
example). Also, one should not need to replicate the measure of mx:Text.
Your example disregards internal padding elements of the Text component.
I did try setActualSize combined with getExplicitOrMeasuredHeight, but
that only works in ActionScript. I encourage you to try and create a
functional example. I'm fairly confident at this point that you will not
get one working in MXML with mx:Text (multi-line).
I was able to get a fully functional item renderer based on
ListItemRenderer, which uses UITextField. However, in theory, one should
be able to do it in MXML. With that in mind, I replaced the UITextField
of my ActionScript-based renderer with mx:Text. It's probably not
surprising to many that the renderer no longer behaves as expected. The
height issue appears to be tied to the component in some fashion
(mx:Text in this case). I'd file a defect but I haven't seen much ROI in
such reports.
--- In flexcoders@yahoogroups.com, Tim Hoff TimHoff@ wrote:
Hi,
Set the List's variableRowHeight=true and use something like this
in
the itemRenderer:
override protected function measure():void
{
var textLineMetrics:TextLineMetrics = comment.measureText(
comment.text );
// should add paddingTop, paddingBottom and verticalGap to this too
measuredHeight = textLineMetrics.height + myLinkButton.height;
}
-TH
--- In flexcoders@yahoogroups.com, Tracy Spratt tracy@ wrote:
Sorry, no magic sauce here. I had some pixie dust somewhere, but.
Was
it
Asimov or Clark that said, Any sufficiently advanced technology
is
indistinguishable from magic?
When I needed a variable height renderer, I copied
ListItemRenderer
and
modified to my needs. That was the only way I could get it to
work. It
is
also *much* more performant than a container based renderer. The
magic
is
indeed in the measure() function.
If you do not have a lot of items to renderer, Repeater works well
with
variable heights.
Tracy Spratt,
Lariat Services, development services available
_
From: flexcoders@yahoogroups.com
[mailto:flexcod...@yahoogroups.com]
On
Behalf Of wubac1
Sent: Saturday, April 18, 2009 2:02 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Custom List ItemRenderer / Recycling
troubles
(height
incorrect)
I'm attempting to create a very simple item renderer for mx:List.
I've
found
that when the dataProvider is static, there are no problems with
the
custom
item
renderer. However, when the dataProvider is dynamic, the height of
the
item
renderer is not correct (and scroll bars appear for each renderer
with
any
meaningful # of rows). I've set variableRowHeight=true for the
List.
I've
also tried overriding the measure function and invaliding the size
when a
dataChange event is dispatched (based on information provided on
FlexCoders
in previous discussions along these lines).
CommentRenderer.mxml:
?xml version=1.0 encoding=utf-8?
mx:VBox xmlns:mx=http://www.adobe.
http://www.adobe.com/2006/mxml
com/2006/mxml width=100%
mx:Script
![CDATA[
override protected function measure():void
{
super.measure();
measuredHeight = comment.textHeight;
}
]]
/mx:Script
mx:LinkButton label={data.commenter.name}/
mx:Text id=comment width=100% text={data.comment}
dataChange=invalidateSize()/
/mx:VBox
The mx:List definition:
mx:List id=comments itemRenderer=com.test.CommentRenderer
width=100%
height=100%/
I've looked over the ListItemRenderer, but have so far been unable
to
glean
the
magic sauce that makes the item renderer function correctly when
the
control
recycles. Can someone explain / provide a functional example(s)
with
mx:Text
(ActionScript and MXML examples preferred, for completeness)?
RE: [flexcoders] Re: Custom List ItemRenderer / Recycling troubles (height incorrect)
Hah, Tim, your spell didn't quite do it, huh? ;) Container-based renderers
are problematic. For anything even slightly complex, extend UIComponent.
I copy ListItemRenderer, it is a great starting point. It is pretty easy to
see where to add your special incantations.
Tracy Spratt,
Lariat Services, development services available
_
From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On
Behalf Of Tim Hoff
Sent: Saturday, April 18, 2009 5:27 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Custom List ItemRenderer / Recycling troubles
(height incorrect)
Hi,
Yes, after playing with it a little, you're correct; my suggestion only
works in AS. Sorry, I always extend UIComponent for itemRenderers that
need to have a variableRowHeight.
BTW, in the future, please sign your posts; so that we can put a name to
your warm and positive comments.
-TH
--- In flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com ups.com,
wubac1 wub...@... wrote:
Tim, I have been using the variableRowHeight (see my original
example). Also, one should not need to replicate the measure of mx:Text.
Your example disregards internal padding elements of the Text component.
I did try setActualSize combined with getExplicitOrMeasuredHeight, but
that only works in ActionScript. I encourage you to try and create a
functional example. I'm fairly confident at this point that you will not
get one working in MXML with mx:Text (multi-line).
I was able to get a fully functional item renderer based on
ListItemRenderer, which uses UITextField. However, in theory, one should
be able to do it in MXML. With that in mind, I replaced the UITextField
of my ActionScript-based renderer with mx:Text. It's probably not
surprising to many that the renderer no longer behaves as expected. The
height issue appears to be tied to the component in some fashion
(mx:Text in this case). I'd file a defect but I haven't seen much ROI in
such reports.
--- In flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com ups.com,
Tim Hoff TimHoff@ wrote:
Hi,
Set the List's variableRowHeight=true and use something like this
in
the itemRenderer:
override protected function measure():void
{
var textLineMetrics:TextLineMetrics = comment.measureText(
comment.text );
// should add paddingTop, paddingBottom and verticalGap to this too
measuredHeight = textLineMetrics.height + myLinkButton.height;
}
-TH
--- In flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com
ups.com, Tracy Spratt tracy@ wrote:
Sorry, no magic sauce here. I had some pixie dust somewhere, but.
Was
it
Asimov or Clark that said, Any sufficiently advanced technology
is
indistinguishable from magic?
When I needed a variable height renderer, I copied
ListItemRenderer
and
modified to my needs. That was the only way I could get it to
work. It
is
also *much* more performant than a container based renderer. The
magic
is
indeed in the measure() function.
If you do not have a lot of items to renderer, Repeater works well
with
variable heights.
Tracy Spratt,
Lariat Services, development services available
_
From: flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com
ups.com
[mailto:flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com ups.com]
On
Behalf Of wubac1
Sent: Saturday, April 18, 2009 2:02 AM
To: flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com ups.com
Subject: [flexcoders] Custom List ItemRenderer / Recycling
troubles
(height
incorrect)
I'm attempting to create a very simple item renderer for mx:List.
I've
found
that when the dataProvider is static, there are no problems with
the
custom
item
renderer. However, when the dataProvider is dynamic, the height of
the
item
renderer is not correct (and scroll bars appear for each renderer
with
any
meaningful # of rows). I've set variableRowHeight=true for the
List.
I've
also tried overriding the measure function and invaliding the size
when a
dataChange event is dispatched (based on information provided on
FlexCoders
in previous discussions along these lines).
CommentRenderer.mxml:
?xml version=1.0 encoding=utf-8?
mx:VBox xmlns:mx=http://www.adobe.
http://www.adobe. http://www.adobe.com/2006/mxml com/2006/mxml
com/2006/mxml width=100%
mx:Script
![CDATA[
override protected function measure():void
{
super.measure();
measuredHeight = comment.textHeight;
}
]]
/mx:Script
mx:LinkButton label={data.commenter.name}/
mx:Text id=comment width=100% text={data.comment}
dataChange=invalidateSize()/
/mx:VBox
The mx:List definition:
mx:List id=comments itemRenderer=com.test.CommentRenderer
width=100%
height=100%/
I've looked over the ListItemRenderer, but have so far been unable
to
glean
the
magic sauce that makes
[flexcoders] Re: Custom List ItemRenderer / Recycling troubles (height incorrect)
Yep, no magic here. :)
-TH
--- In flexcoders@yahoogroups.com, Tracy Spratt tr...@... wrote:
Hah, Tim, your spell didn't quite do it, huh? ;) Container-based
renderers
are problematic. For anything even slightly complex, extend
UIComponent.
I copy ListItemRenderer, it is a great starting point. It is pretty
easy to
see where to add your special incantations.
Tracy Spratt,
Lariat Services, development services available
_
From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com]
On
Behalf Of Tim Hoff
Sent: Saturday, April 18, 2009 5:27 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Custom List ItemRenderer / Recycling
troubles
(height incorrect)
Hi,
Yes, after playing with it a little, you're correct; my suggestion
only
works in AS. Sorry, I always extend UIComponent for itemRenderers that
need to have a variableRowHeight.
BTW, in the future, please sign your posts; so that we can put a name
to
your warm and positive comments.
-TH
--- In flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com
ups.com,
wubac1 wubac1@ wrote:
Tim, I have been using the variableRowHeight (see my original
example). Also, one should not need to replicate the measure of
mx:Text.
Your example disregards internal padding elements of the Text
component.
I did try setActualSize combined with getExplicitOrMeasuredHeight, but
that only works in ActionScript. I encourage you to try and create a
functional example. I'm fairly confident at this point that you will
not
get one working in MXML with mx:Text (multi-line).
I was able to get a fully functional item renderer based on
ListItemRenderer, which uses UITextField. However, in theory, one
should
be able to do it in MXML. With that in mind, I replaced the
UITextField
of my ActionScript-based renderer with mx:Text. It's probably not
surprising to many that the renderer no longer behaves as expected.
The
height issue appears to be tied to the component in some fashion
(mx:Text in this case). I'd file a defect but I haven't seen much ROI
in
such reports.
--- In flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com
ups.com,
Tim Hoff TimHoff@ wrote:
Hi,
Set the List's variableRowHeight=true and use something like
this
in
the itemRenderer:
override protected function measure():void
{
var textLineMetrics:TextLineMetrics = comment.measureText(
comment.text );
// should add paddingTop, paddingBottom and verticalGap to this
too
measuredHeight = textLineMetrics.height + myLinkButton.height;
}
-TH
--- In flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com
ups.com, Tracy Spratt tracy@ wrote:
Sorry, no magic sauce here. I had some pixie dust somewhere,
but.
Was
it
Asimov or Clark that said, Any sufficiently advanced technology
is
indistinguishable from magic?
When I needed a variable height renderer, I copied
ListItemRenderer
and
modified to my needs. That was the only way I could get it to
work. It
is
also *much* more performant than a container based renderer. The
magic
is
indeed in the measure() function.
If you do not have a lot of items to renderer, Repeater works
well
with
variable heights.
Tracy Spratt,
Lariat Services, development services available
_
From: flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com
ups.com
[mailto:flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com
ups.com]
On
Behalf Of wubac1
Sent: Saturday, April 18, 2009 2:02 AM
To: flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com
ups.com
Subject: [flexcoders] Custom List ItemRenderer / Recycling
troubles
(height
incorrect)
I'm attempting to create a very simple item renderer for
mx:List.
I've
found
that when the dataProvider is static, there are no problems with
the
custom
item
renderer. However, when the dataProvider is dynamic, the height
of
the
item
renderer is not correct (and scroll bars appear for each
renderer
with
any
meaningful # of rows). I've set variableRowHeight=true for the
List.
I've
also tried overriding the measure function and invaliding the
size
when a
dataChange event is dispatched (based on information provided on
FlexCoders
in previous discussions along these lines).
CommentRenderer.mxml:
?xml version=1.0 encoding=utf-8?
mx:VBox xmlns:mx=http://www.adobe.
http://www.adobe. http://www.adobe.com/2006/mxml com/2006/mxml
com/2006/mxml width=100%
mx:Script
![CDATA[
override protected function measure():void
{
super.measure();
measuredHeight = comment.textHeight;
}
]]
/mx:Script
mx:LinkButton label={data.commenter.name}/
mx:Text id=comment width=100% text={data.comment}
dataChange=invalidateSize()/
/mx:VBox
[flexcoders] Re: Custom List ItemRenderer / Recycling troubles (height incorrect)
Well, there is magic in ActionScript. MXML doesn't have the item renderer mojo.
-W
--- In flexcoders@yahoogroups.com, Tim Hoff timh...@... wrote:
Yep, no magic here. :)
-TH
--- In flexcoders@yahoogroups.com, Tracy Spratt tracy@ wrote:
Hah, Tim, your spell didn't quite do it, huh? ;) Container-based
renderers
are problematic. For anything even slightly complex, extend
UIComponent.
I copy ListItemRenderer, it is a great starting point. It is pretty
easy to
see where to add your special incantations.
Tracy Spratt,
Lariat Services, development services available
_
From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com]
On
Behalf Of Tim Hoff
Sent: Saturday, April 18, 2009 5:27 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Custom List ItemRenderer / Recycling
troubles
(height incorrect)
Hi,
Yes, after playing with it a little, you're correct; my suggestion
only
works in AS. Sorry, I always extend UIComponent for itemRenderers that
need to have a variableRowHeight.
BTW, in the future, please sign your posts; so that we can put a name
to
your warm and positive comments.
-TH
--- In flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com
ups.com,
wubac1 wubac1@ wrote:
Tim, I have been using the variableRowHeight (see my original
example). Also, one should not need to replicate the measure of
mx:Text.
Your example disregards internal padding elements of the Text
component.
I did try setActualSize combined with getExplicitOrMeasuredHeight, but
that only works in ActionScript. I encourage you to try and create a
functional example. I'm fairly confident at this point that you will
not
get one working in MXML with mx:Text (multi-line).
I was able to get a fully functional item renderer based on
ListItemRenderer, which uses UITextField. However, in theory, one
should
be able to do it in MXML. With that in mind, I replaced the
UITextField
of my ActionScript-based renderer with mx:Text. It's probably not
surprising to many that the renderer no longer behaves as expected.
The
height issue appears to be tied to the component in some fashion
(mx:Text in this case). I'd file a defect but I haven't seen much ROI
in
such reports.
--- In flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com
ups.com,
Tim Hoff TimHoff@ wrote:
Hi,
Set the List's variableRowHeight=true and use something like
this
in
the itemRenderer:
override protected function measure():void
{
var textLineMetrics:TextLineMetrics = comment.measureText(
comment.text );
// should add paddingTop, paddingBottom and verticalGap to this
too
measuredHeight = textLineMetrics.height + myLinkButton.height;
}
-TH
--- In flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com
ups.com, Tracy Spratt tracy@ wrote:
Sorry, no magic sauce here. I had some pixie dust somewhere,
but.
Was
it
Asimov or Clark that said, Any sufficiently advanced technology
is
indistinguishable from magic?
When I needed a variable height renderer, I copied
ListItemRenderer
and
modified to my needs. That was the only way I could get it to
work. It
is
also *much* more performant than a container based renderer. The
magic
is
indeed in the measure() function.
If you do not have a lot of items to renderer, Repeater works
well
with
variable heights.
Tracy Spratt,
Lariat Services, development services available
_
From: flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com
ups.com
[mailto:flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com
ups.com]
On
Behalf Of wubac1
Sent: Saturday, April 18, 2009 2:02 AM
To: flexcod...@yahoogro mailto:flexcoders%40yahoogroups.com
ups.com
Subject: [flexcoders] Custom List ItemRenderer / Recycling
troubles
(height
incorrect)
I'm attempting to create a very simple item renderer for
mx:List.
I've
found
that when the dataProvider is static, there are no problems with
the
custom
item
renderer. However, when the dataProvider is dynamic, the height
of
the
item
renderer is not correct (and scroll bars appear for each
renderer
with
any
meaningful # of rows). I've set variableRowHeight=true for the
List.
I've
also tried overriding the measure function and invaliding the
size
when a
dataChange event is dispatched (based on information provided on
FlexCoders
in previous discussions along these lines).
CommentRenderer.mxml:
?xml version=1.0 encoding=utf-8?
mx:VBox xmlns:mx=http://www.adobe.
http://www.adobe. http://www.adobe.com/2006/mxml com/2006/mxml
