SOLVED - [flexcoders] Remove selected items from an ArrayCollection / DataGrid?
OK, below is the solution that I came up
with. If anyone sees a simpler / better way, please let me know.
Adobe engineers: I am guessing that
removing items from a data grid is a common operation, in which case it seems
like there should be a very simple and straightforward way of doing so. What am
I missing?
private function sortOnInt(strA:String,
strB:String):int {
var a:int = int(strA);
var b:int = int(strB);
var r:int = 0;
if(a b) {
r = -1;
} else if(a b) {
r = 1;
} else if(a == b) {
r = 0;
}
return r;
}
private function removeSelected(): void {
var arr:Array = dgTest.selectedIndices;
arr.sort(sortOnInt);
for(var i:int = 0; i arr.length;
i++){
acTest.removeItemAt(arr[i]);
}
}
From:
flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Jim Robson
Sent: Thursday, June 08, 2006
11:21 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Re:
Remove selected items from an ArrayCollection / DataGrid?
Yes, I suspect youre on the right track (except for the fact
that DataGrid indices are Strings see my other post on that subject).
The other issue Ive encountered is that the array needs to
be sorted from greatest to least. Thats what Im working on now.
Of course, this is not straightforward either, because the DataGrid indices are
strings!
Thanks for the help!!!
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf
Of bhaq1972
Sent: Thursday, June 08, 2006
11:14 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Remove
selected items from an ArrayCollection / DataGrid?
i reckon your the selectedIndicis is changing and therefore cannot
be relied upon within your for loop.
try this. (as a starting point)
private function removeSelected():void
{
var array1:Array = new Array();
for(var j:int;j dgTest.selectedIndices.length; j++)
{
var num1:int = dgTest.selectedIndices[j];
array1.push(num1);
}
for(var i:int = 0; i array1.length; i++)
{
acTest.removeItemAt(array1[i]);
}
}
--- In [EMAIL PROTECTED]ups.com,
Jim Robson jim.robson@...
wrote:
Correction: the app is actually removing ½ of the selected items
with each
click of the button. The new version of the code below has
additional items
in the data model in order to make this easier to test.
Any ideas? Am I just missing something obvious?
?xml version=1.0 encoding=utf-8?
mx:Application xmlns:mx=http://www.adobe.com/2006/mxml
mx:Model id=mTest
services
service type=Plumbing
cost=$100
description=Fix leaky drain /
service type=Electrical
cost=$200
description=Wire stairwell lighting/
service type=Roofing
cost=$300
description=Install vent pipe boot/
service type=Carpentry
cost=$400
description=Replace entry door/
service type=Plumbing
cost=$500
description=Install bath tub/
service type=Electrical
cost=$600
description=Wire home office/
service type=Roofing
cost=$700
description=Install ice amp; water shield/
service type=Carpentry
cost=$800
description=Install sliding patio door/
service type=Plumbing
cost=$900
description=Install hot tub/
service type=Electrical
cost=$1000
description=Install service box/
service type=Roofing
cost=$1100
description=Shingle one-car garage/
service type=Carpentry
cost=%1200
description=Build small deck/
/services
/mx:Model
mx:ArrayCollection id=acTest
source={mTest.services.service} /
mx:Script
![CDATA[
import
mx.collections.ArrayCollection;
private function removeSelected():void{
for(var i:int = 0; i
dgTest.selectedIndices.length; i++){
acTest.removeItemAt(dgTest.selectedIndices[i]);
}
}
]]
/mx:Script
mx:VBox width=400 height=600
mx:DataGrid id=dgTest
dataProvider={acTest}
width=400 height=500 allowMultipleSelection=true
mx:columns
mx:DataGridColumn
headerText=Type dataField=type /
mx:DataGridColumn
headerText=Service dataField=description
/
mx:DataGridColumn
headerText=Cost dataField=cost /
/mx:columns
/mx:DataGrid
mx:Button id=btnTest
click=removeSelected();
label=Remove Selected /
/mx:VBox
/mx:Application
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Re: SOLVED - [flexcoders] Remove selected items from an ArrayCollection / DataGrid?
Does this work?
private function removeSelected(): void {
while (dgTest.selectedIndices.length 0){
acTest.removeItemAt(dgTest.selectedIndices[0]);
}
}
--- In flexcoders@yahoogroups.com, Jim Robson [EMAIL PROTECTED]
wrote:
OK, below is the solution that I came up with. If anyone sees a
simpler /
better way, please let me know.
Adobe engineers: I am guessing that removing items from a data
grid is a
common operation, in which case it seems like there should be a
very simple
and straightforward way of doing so. What am I missing?
private function sortOnInt(strA:String, strB:String):int {
var a:int = int(strA);
var b:int = int(strB);
var r:int = 0;
if(a b) {
r = -1;
} else if(a b) {
r = 1;
} else if(a == b) {
r = 0;
}
return r;
}
private function removeSelected(): void {
var arr:Array = dgTest.selectedIndices;
arr.sort(sortOnInt);
for(var i:int = 0; i arr.length; i++){
acTest.removeItemAt(arr[i]);
}
}
_
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On
Behalf Of Jim Robson
Sent: Thursday, June 08, 2006 11:21 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Re: Remove selected items from an
ArrayCollection
/ DataGrid?
Yes, I suspect you're on the right track (except for the fact that
DataGrid
indices are Strings see my other post on that subject).
The other issue I've encountered is that the array needs to be
sorted from
greatest to least. That's what I'm working on now. Of course, this
is not
straightforward either, because the DataGrid indices are strings!
Thanks for the help!!!
_
From: flexcoders@yahoogroups.com
[mailto:[EMAIL PROTECTED] On
Behalf Of bhaq1972
Sent: Thursday, June 08, 2006 11:14 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Remove selected items from an
ArrayCollection /
DataGrid?
i reckon your the selectedIndicis is changing and therefore cannot
be relied upon within your for loop.
try this. (as a starting point)
private function removeSelected():void
{
var array1:Array = new Array();
for(var j:int;j dgTest.selectedIndices.length; j++)
{
var num1:int = dgTest.selectedIndices[j];
array1.push(num1);
}
for(var i:int = 0; i array1.length; i++)
{
acTest.removeItemAt(array1[i]);
}
}
--- In [EMAIL PROTECTED] mailto:flexcoders%40yahoogroups.com
ups.com,
Jim Robson jim.robson@
wrote:
Correction: the app is actually removing ½ of the selected items
with each
click of the button. The new version of the code below has
additional items
in the data model in order to make this easier to test.
Any ideas? Am I just missing something obvious?
?xml version=1.0 encoding=utf-8?
mx:Application xmlns:mx=http://www.adobe.
http://www.adobe.com/2006/mxml com/2006/mxml
mx:Model id=mTest
services
service type=Plumbing
cost=$100
description=Fix leaky drain /
service type=Electrical
cost=$200
description=Wire stairwell lighting/
service type=Roofing
cost=$300
description=Install vent pipe boot/
service type=Carpentry
cost=$400
description=Replace entry door/
service type=Plumbing
cost=$500
description=Install bath tub/
service type=Electrical
cost=$600
description=Wire home office/
service type=Roofing
cost=$700
description=Install ice amp; water shield/
service type=Carpentry
cost=$800
description=Install sliding patio door/
service type=Plumbing
cost=$900
description=Install hot tub/
service type=Electrical
cost=$1000
description=Install service box/
service type=Roofing
cost=$1100
description=Shingle one-car garage/
service type=Carpentry
cost=%1200
description=Build small deck/
/services
/mx:Model
mx:ArrayCollection id=acTest
source={mTest.services.service} /
mx:Script
![CDATA[
import
mx.collections.ArrayCollection;
private function removeSelected():void{
for(var i:int = 0; i
dgTest.selectedIndices.length; i++){
acTest.removeItemAt(dgTest.selectedIndices[i]);
}
}
]]
/mx:Script
mx:VBox width=400 height=600
mx:DataGrid id=dgTest
dataProvider={acTest}
width=400 height=500 allowMultipleSelection=true
mx:columns
mx:DataGridColumn
headerText=Type dataField=type /
mx:DataGridColumn
headerText=Service dataField=description /
mx:DataGridColumn
headerText=Cost dataField=cost /
/mx:columns
/mx:DataGrid
mx:Button id=btnTest
click=removeSelected();
label=Remove Selected /
/mx:VBox
/mx:Application
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