Provide an API to request DND

[Danielle Foré]

Not sure if it's more appropriate here or in Gala...

Corentin and I were just discussing a way for apps to request Do Not Disturb mode. Some use cases:

* Calendar wants to set Do Not Disturb during an event (like a meeting)
* Videos wants to set Do Not Disturb while watching video full screen
* A presentation app wants to set Do Not Disturb while presenting
* A writing app has an "Focus Mode" (like iA writer) and wants to set Do Not Disturb while in this mode

[Corentin Noël (tintou)]

Yeah, this would be awesome.
In Android Marshmallow they introduced it and it's pretty cool to not have to handle such things.
Here is an article with some screenshots that can help for the implementation:
http://www.androidcentral.com/inside-android-ms-new-do-not-disturb-mode

[xapantu (xapantu)]

Maybe an integer with the number of apps that request the DND would be
sufficient. E.g. every apps that require it adds +1 when it wants it,
and remove 1 once it's done. That would create some problem if one of
these applications crashed though.

On 12/10/2015 22:39, Daniel Fore wrote:
> Public bug reported:
>
> Not sure if it's more appropriate here or in Gala...
>
> Corentin and I were just discussing a way for apps to request Do Not
> Disturb mode. Some use cases:
>
> * Calendar wants to set Do Not Disturb during an event (like a meeting)
> * Videos wants to set Do Not Disturb while watching video full screen
> * A presentation app wants to set Do Not Disturb while presenting
> * A writing app has an "Focus Mode" (like iA writer) and wants to set Do Not Disturb while in this mode
>
> ** Affects: gala
> Importance: Undecided
> Status: New
>
> ** Affects: switchboard-plug-notifications
> Importance: Undecided
> Status: New
>
> ** Also affects: gala
> Importance: Undecided
> Status: New
>

[Marcus Wichelmann (l-admin-3)]

In the moment that is possible using the public dconf-key. Or isn't that enough?

[xapantu (xapantu)]

Not really, for instance :

# State 0, do not disturb not enabled

# App 1 is started, switches DND on

# App 2 is started, is happy about DND on

# App 1 shut down, disable DND as it enables it itself

# BOOM, app 2 is launched but DND is off

On 13/10/2015 00:03, Marcus Wichelmann wrote:
> In the moment that is possible using the public dconf-key. Or isn't that
> enough?
>

[Danielle Foré (danrabbit)]

I guess a smart thing to do would be also to watch for the process to end in case it did (for example) crash or the developer simply forget to end the request for DnD

[Cameron Norman (cameronnemo)]

Maybe use file descriptors so it is closed when the process exits? That way no messy watching of the processes. Make sure the CLOEXEC flag is on so child processes (e.g. a mail application triggered from the about dialog) do not activate DND.