[#SDK-15521] RTE when using keyboard navigation on Flex DataGrid with empty dataprovider

Flex SDK

RTE when using keyboard navigation on Flex DataGrid with empty dataprovider

Created: 05/09/08 03:13 PM Updated: 05/13/09 04:42 PM

Component/s:

mx: DataGrid

Security Level:

Public (All JIRA Users )

File Attachments:

main.mxml (0.3 kb)
2.

main.swf (399 kb)

Severity:	Runtime Error
Reproducibility:	Every Time
Discoverability:	Low
Found in Version:	SDK Flex 3 (Released)
Milestone:	SDK Gumbo - Release
Affected OS(s):	All OS Platforms - All
Steps to Reproduce:	« Hide Steps to reproduce: 1. Compile and run attached bug file. 2. Click the DataGrid to give Flex/DataGrid focus. 3. Press the up/down arrow or pageup/pagedown button on thy keyboard (others may work too, i only tried the core-four) Actual Results: [RTE] TypeError: Error #1010: A term is undefined and has no properties. at mx.controls.dataGridClasses::DataGridBase/moveSelectionVertically()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\controls\dataGridClasses\DataGridBase.as:2311] at mx.controls.listClasses::ListBase/keyDownHandler()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\controls\listClasses\ListBase.as:7891] at mx.controls::DataGrid/keyDownHandler()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\controls\DataGrid.as:4561] [/RTE] Expected Results: No RTE Workaround (if any): Not really a "workaround" but the issue doesnt seem to appear if dataProvider was not provided (or has 1 or more items) Show » Steps to reproduce: 1. Compile and run attached bug file. 2. Click the DataGrid to give Flex/DataGrid focus. 3. Press the up/down arrow or pageup/pagedown button on thy keyboard (others may work too, i only tried the core-four) Actual Results: [RTE] TypeError: Error #1010: A term is undefined and has no properties. at mx.controls.dataGridClasses::DataGridBase/moveSelectionVertically()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\controls\dataGridClasses\DataGridBase.as:2311] at mx.controls.listClasses::ListBase/keyDownHandler()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\controls\listClasses\ListBase.as:7891] at mx.controls::DataGrid/keyDownHandler()[E:\dev\3.0.x\frameworks\projects\framework\src\mx\controls\DataGrid.as:4561] [/RTE] Expected Results: No RTE Workaround (if any): Not really a "workaround" but the issue doesnt seem to appear if dataProvider was not provided (or has 1 or more items)
Language Found:	English
Bugbase Id:	none
Triaged:	Yes
Regression:	No
QA Owner:	Robert Vollmar (Adobe)
Participants:	Deepa Subramaniam, Makoto Ichihara, Peter deHaan (Adobe), Robert Vollmar (Adobe) and Ryan Frishberg

Sub-Tasks:

All

Open

Sub-Task Progress:

Added a simple check to see if row count is 0

Patch Submission Review

Alex Harui

All

Comments

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Peter deHaan (Adobe) - [05/09/08 03:15 PM ]

Not a regression. Happens in 201.3 also:
[RTE]
TypeError: Error #1010: A term is undefined and has no properties.
at mx.controls.dataGridClasses::DataGridBase/moveSelectionVertically()[E:\dev\flex_201_borneo\sdk\frameworks\mx\controls\dataGridClasses\DataGridBase.as:794]
at mx.controls.listClasses::ListBase/keyDownHandler()[E:\dev\flex_201_borneo\sdk\frameworks\mx\controls\listClasses\ListBase.as:6315]
at mx.controls::DataGrid/keyDownHandler()[E:\dev\flex_201_borneo\sdk\frameworks\mx\controls\DataGrid.as:4451]
[/RTE]

[ Permlink | « Hide ]

Robert Vollmar (Adobe) - [05/13/08 12:35 PM ]

Sending to IRB.

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Robert Vollmar (Adobe) - [06/24/08 07:33 PM - edited ]

Fix in Flex 4

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Deepa Subramaniam - [08/25/08 05:12 PM ]

To Ryan for Gumbo release - hopefully as straightforward as adding a null check.

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Makoto Ichihara - [02/26/09 04:24 AM ]

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:ArrayCollection id="emptyAc" />
<mx:DataGrid id="dataGrid" dataProvider="{emptyAc}">

<mx:columns>
<mx:DataGridColumn dataField="a"/>
<mx:DataGridColumn dataField="b" />
<mx:DataGridColumn dataField="c" />
</mx:columns>

</mx:DataGrid>
</mx:Application>

The code above can cause the same kind of error. This time it is #1009. The root cause must be the same.

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at mx.controls.dataGridClasses::DataGridBase/finishKeySelection()[C:\autobuild\3.2.\frameworks\projects\framework\src\mx\controls\dataGridClasses\DataGridBase.as:2565]
at mx.controls.dataGridClasses::DataGridBase/moveSelectionVertically()[C:\autobuild\3.2.\frameworks\projects\framework\src\mx\controls\dataGridClasses\DataGridBase.as:2511]
at mx.controls.listClasses::ListBase/keyDownHandler()[C:\autobuild\3.2.\frameworks\projects\framework\src\mx\controls\listClasses\ListBase.as:7925]
at mx.controls::DataGrid/keyDownHandler()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\DataGrid.as:4580]