[OPEN] [#813] GridPanel Grouping Menu issue

[matt]

Hi,

When you add menu command into Grouping Header like in the example:

https://examples3.ext.net/#/GridPane...Group_Command/

then if you expand and collapse group headers (not the first one), I think the layout is "playing tricks". The menu is added later causing "not desired" effect.



This screen shoot was made during "layout update". In the end everything is fine (except you can clearly see the issue)




Thank you,

[Daniil]

Hi @Matt,

Apologize for the delay in answering.

Thank you for reporting that. Logged in GitHub.
https://github.com/extnet/Ext.NET/issues/813

Yes, unfortunately, there is a problem. We have to re-render/re-inject commands after each refresh with a small delay and it causes this ugly effect. If we re-render without any delay, it causes other issues.

The problem originates from the fact the native ExtJS GridPanel doesn't quite support such kind of injections. So far, we were not able to get it working flawlessly.

But I can recommend an alternative approach - replacing CommandColumn with ImageCommandColumn. Yes, it is not a direct replacement. It will lead to some additional work, but it should not be that difficult for you and, I would say, it is the only solid solution in this situation. Generally speaking, my recommendation would be always use ImageCommandColumn rather than CommandColumn. It is much more lightweight and it behaves significantly better.

[matt]

Thank you,

You are right;
Unfortunately ImageCommandColumn cannot have drop down menu (or can it have ?)

[Daniil]

Unfortunately ImageCommandColumn cannot have drop down menu (or can it have ?)

Yes, it is one of the differences comparing with CommandColumn commands.

But you can define a Menu separately and show it on an image command click.

[matt]

Thank you,

I will try this approach.