TreeView.badge Not Displayed on Activity Bar in Theia for VS Code Extensions

[panjetaa]

Feature Description:

When I use the treeView.badge property in my VS Code extension to display a badge on the Activity Bar (action bar) icon, the badge appears correctly in standalone VS Code. However, when I run the same extension in Theia, the badge is not displayed on the Activity Bar icon. I it possible to add support for displaying TreeView badges on the Activity Bar icon in Theia for VS Code extensions, to improve compatibility and user experience.

References:
https://code.visualstudio.com/api/references/vscode-api#TreeView

Thank you!

[ndoschek]

Thanks for reporting this!
I tested it as well and can confirm the issue: extensions that correctly invoke the API and pass badge data to the view container don’t have the badge and its tooltip info rendered in Theia.

I used the cspell extension for testing: this should display a badge and an extended tooltip, either in its default position on the bottom panel or when moved to the left sidebar.

The data is passed correctly and reaches the ViewContainer (see here), but the badge and tooltip are not visually propagated.

We're open to contributions if you or anyone else is interested in helping improve this compatibility 🙂