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Tracking of data changes [message #1840302]

Mon, 12 April 2021 07:43

Alexandra Tritean

Messages: 37
Registered: March 2020

Member

Hello,

I'm trying to integrate the functionality of tracking data changes in my grids and I have used Tutorial Examples -> Integration -> EditableSortableGroupByWithFilterExample as reference.

What is implemented there works as expected also in my grids, but I have a 'special' situation that I'm not sure how to handle. I have a custom theme configuration in order to be able to apply a custom style (strikethrough) in some conditions.

I have adapted EditableSortableGroupByWithFilterExample a bit in order to illustrate my case.
You will see that the married persons will be marked with a strikethrough style and on top of a married person there will be a context menu option 'Divorced' and on top of a person that is not married there will be a context menu option 'Married'.
(This is a bit forced and funny for this example, but I wanted to use as base an example that you're familiar with . In my case I'm using this style for marking stuff deprecated).
After using those two options from context menu ("Married"/"Divorced") the discard changes functionality will not revert the changes.

Is there a way in which I can integrate those two concepts or is there another way in which I should implement the strikethrough style in order to be tracked?

Thank you!

Kind Regards,

Alexandra

Attachment: _814_EditableSortableGroupByWithFilterExample.java
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[Updated on: Mon, 12 April 2021 07:44]

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Re: Tracking of data changes [message #1840305 is a reply to message #1840302]

Mon, 12 April 2021 08:41

Dirk Fauth

Messages: 47
Registered: March 2020

Member

Your issue is not related to styling. You are missing the concept behind the DataChangeLayer. Your context menu entries are changing the data directly in the underlying data model. This way the DataChangeLayer never gets informed that the data was changed and therefore does not track anything.

If you change the code to update the underlying data model to use an UpdateDataCommand, it should work.

NatEventData natEventData = MenuItemProviders.getNatEventData(event);
natTable.doCommand(new UpdateDataCommand(
        natEventData.getNatTable(),
        natEventData.getColumnPosition(),
        natEventData.getRowPosition(),
        Boolean.FALSE));

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