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[NatTable]Color Change due to Editing [message #1718908]

Sat, 02 January 2016 05:00

Annamalai Mising name

Messages: 126
Registered: July 2009

Senior Member

Hi

I am a newbie to NatTable. I have a fairly simple requirement.
I am displaying Person Data on the Table and have enabled Editing
Functionality on the Table. Now cells which i have edited should alone
be displayed using ForeGround as RED.

I understand the usage of CellStyleAttribute but in that case, each Cell
needs to have a unique label assigned to it using the LabelAccumulator.
I cannot do this as i need to turn the ForeGround RED after editing has
been performed on a particular CELL.

Looks like a fairly simple requirement when it comes to TableViewer. Not
sure how to do it using NatTable.

Looking for support. I have used EditingSupportExample and
CustomCellStylingExample also.

Regards
Malai

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Re: [NatTable]Color Change due to Editing [message #1718910 is a reply to message #1718908]

Sat, 02 January 2016 08:42

Dirk Fauth

Messages: 2902
Registered: July 2012

Senior Member

First, NatTable has its own forum.

I'm not sure why this is a simple requirement to solve with TableViewer, but maybe just because I haven't used TableViewer in such scenarios for quite a while.

If you already know about cell labels and label accumulator, the only missing part is how to know about a cell was edited. NatTable does not have a mechanism that stores if a cell was edited. So you need to add that yourself and then apply a label if the cell was edited.

So you need to implement a custom label accumulator that stores the information which cells have been edited and applies a special label for such cells. To store that information you could use a custom UpdateDataCommandHandler or a custom IDataProvider for example.

The blinking cell examples add temporary labels if a cell value has updated using a property listener mechanism, which could also be an option.

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