support do not disturb mode for notifications

[akosyakov]

It is a follow-up of #5830.

As a user, i want to suppress pop up of all notifications. Instead counter should be updated in the status bar as a reminder that there are some messages. Counter should not blink or something to avoid distracting as well.

In VS Code it is not possible, so it is a proposal to implement in Theia.

cc @AlexTugarev

[AlexTugarev]

I think notifications could be even filtered by severity when it comes to show a toast, e.g. I'd still want to see errors.

[vince-fugnitto]

Would a preference be sufficient?
Something like being able to:

• hide all notifications - unless the user explicitly clicks the bell
• hide all infos
• hide all warnings
• never hide

[garethwhittaker]

I'd be interested in picking this task up.
I assume a new preference will be a suitable way to specify which notification types to mute.

[vince-fugnitto]

I'd be interested in picking this task up.

@garethwhittaker sure!

I assume a new preference will be a suitable way to specify which notification types to mute.

I think we can aim to have a single preference (ex: workbench.silentNotifications) which would affect all types of notifications. I could not find a preference in VS Code however.

It might also be interesting for at some point to have an enhancement in the form of a new command which toggles the silentNotifications preference (allows users to turn on/off the setting at will).

[AmeyaLokre]

@vince-fugnitto is there plan to support suppressing notifications based on levels as mentioned in your initial comment #5942 (comment) ?

hide all notifications - unless the user explicitly clicks the bell
hide all infos
hide all warnings
never hide

[vince-fugnitto]

Is there plan to support suppressing notifications based on levels as mentioned in your initial comment

@AmeyaLokre not that I am aware of, and I did not find a similar notification present in vscode. You can always add such a preference in your own application based on Theia if you require the use-case.