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[Task Manager] Add support for Unity Launcher API and Application Jobs

Review Request #126621 - Created Jan. 3, 2016 and submitted

Kai Uwe Broulik
plasma, usability
craig, hein, lukas

This adds support for the Unity Launcher API [1] with which applications can show a progress indicator, a number badge as well as demand the user's attention. It also shows application progress (such as copying a file) with the respective application.

This functionality has been present in the Icon Tasks applet [2] in Plasma 4 times. libunity must be present for most applications to actually use this.

I did not want to pollute libtaskmanager with this, so I made it a plugin in the Task Manager applet, which should also be fairly trivial to update to the new Launcher API that Unity 8 is going to use [3], or if we come up with our own solution at some point, maybe.

The primary focus is still the icons only task manager as the Unity API works on a per-application/per-launcher basis rather than per-window, however, where it makes sense the functonality is also offered to the traditional task manager. A downside of this is that (in the current implementation, anyways) in case you do not group your tasks and you have multiple windows of the same task open, it will show the same information on all entries.

For progress it gradually fills up the background of the task (VDG: I need a better graphic here, I currently abuse the "hover" tasks SVG, also I find the "+2" badge less than optimal) in all cases. The badges are only shown if 1) the cell is large enough 2) the label is not shown (ie. icon tasks manager or the regular one in very narrow). The badge is just a circle in theme highlight color, not an actual SVG - it cuts off part of the icon to provide more contrast. The "urgent" state just highlights the entry as if it requested attention, there's no wiggle animation and this is nowhere integrated with the window manager, also I did not find an application that used this, so I have no idea how it's used by them.

A video with the regular task manager on the top, a regular task manager and an icon tasks applet in the left panel and an icon tasks applet on the desktop (the latter is broken in the video, fixed in this patch) can be found here [4].

(There's still a ton of qDebug in the code at this point)

[1] https://wiki.ubuntu.com/Unity/LauncherAPI
[2] http://kde-apps.org/content/show.php/Icon+Tasks?content=144808
[3] http://bazaar.launchpad.net/~unity-team/unity8/trunk/files/head:/plugins/Unity/Launcher/
[4] https://www.youtube.com/watch?v=aBPGjlP6Wd8

I started a download in Chromium and got progress as well as a badge indicating how many download jobs were in progress. Thunderbird also registered a launcher on DBus but it never actually set a badge although I had unread mail. I copied a folder in Dolphin and got proper progress; also I played around with JobViewServer on DBus and it behaved correctly, even in case there were multiple progresses in one application.



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Description From Last Updated
Heiko Tietze
Kai Uwe Broulik
David Edmundson
Kai Uwe Broulik
Eike Hein
Eike Hein
Kai Uwe Broulik
Alessandro Longo
Kai Uwe Broulik
Kai Uwe Broulik
Kai Uwe Broulik
Review request changed

Status: Closed (submitted)

Change Summary:

Submitted with commit e284e9dc17051f22d05985e218fa44ddaba78de5 by Kai Uwe Broulik to branch master.