added possibility to add custom actions for the group-nodes in the layer tree

[notguiltyspark]

Description

Currently, you can create a custom action in the context menu of layer-tree only for different types of layers. This PR provides public API to add an action for groups of layers.

Two functions are added to public API of QGisInterface:

• Add action to context menu for all group-nodes in the layer tree.

virtual void addCustomActionForGroups( QAction *action, const QString &menu ) = 0;

• Remove action from the context menu for all group-nodes in the layer tree previously added with addCustomActionForGroups().

virtual bool removeCustomActionForGroups( QAction *action ) = 0;

Fixes #53692

[github-actions]

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[jbp35]

It would be great to be able to add a custom action in the default menu (right click in blank area of layer tree).

[notguiltyspark]

It would be great to be able to add a custom action in the default menu (right click in blank area of layer tree).

I agree, though i think it would be better to create a separate issue.

[github-actions]

The QGIS project highly values your contribution and would love to see this work merged! Unfortunately this PR has not had any activity in the last 14 days and is being automatically marked as "stale". If you think this pull request should be merged, please check

• that all unit tests are passing

• that all comments by reviewers have been addressed

• that there is enough information for reviewers, in particular

  • link to any issues which this pull request fixes

  • add a description of workflows which this pull request fixes

  • add screenshots if applicable

• that you have written unit tests where possible
  In case you should have any uncertainty, please leave a comment and we will be happy to help you proceed with this pull request.
  If there is no further activity on this pull request, it will be closed in a week.

[github-actions]

The QGIS project highly values your contribution and would love to see this work merged! Unfortunately this PR has not had any activity in the last 14 days and is being automatically marked as "stale". If you think this pull request should be merged, please check

• that all unit tests are passing

• that all comments by reviewers have been addressed

• that there is enough information for reviewers, in particular

  • link to any issues which this pull request fixes

  • add a description of workflows which this pull request fixes

  • add screenshots if applicable

• that you have written unit tests where possible
  In case you should have any uncertainty, please leave a comment and we will be happy to help you proceed with this pull request.
  If there is no further activity on this pull request, it will be closed in a week.

[Rusty-JonesBMT]

Would love to see this implemented.

If there was a way to upvote or something, that would be great. I'm hoping that by commenting, it attracts attention.