When removing a notification, it is removed from the model, which will cause the
view to update and move up an older notification, if any. If you now delete a bunch
of notifications in quick succession we will create a dialog every time which then
gets deleted again, causing another notification to move up, etc causing high CPU
spikes and plasma freezes.
This patch compresses removing notifications and tries to announce consecuetive
ranges of notifications to be removed in one go.
BUG: 423594
FIXED-IN: 5.21.0
* Ship some more default rules in plasmanotifyrc
* Improved do not disturb menu (add "for 4 hours" and "until disabled")
* Expand unread notifications by default, overall improved expansion/collapse handling
* Show unread count in panel and reset when plasmoid is closed again
* Move notification sanitizer and its test from dataengine to lib
* Load pixmaps into model also for files and limit their physical size
* Enforce maximum limit for notifications (1000...)
Summary:
Qt labels support a HTML subset, using a completely internal parser in
QTextDocument.
The Notification spec support an even smaller subset of notification
elements.
It's important to strip out irrelevant tags that could potentially load
remote information without user interaction, such as img
src or even <b style="background:url...
But we want to maintain the basic rich text formatting of bold and
italics and links.
This parser iterates reads the XML, copying only permissable tags and
attributes.
A future obvious improvement would be to merge the original regular
expressions into this stream parser, but I'm trying to minimise
breakages to get this into 5.12.
Test Plan:
Moved code into it's own class for easy unit testing
Tried a bunch of things, including what the old regexes were doing
Also ran notify send with a few options to make sure things worked
Reviewers: #plasma, fvogt
Reviewed By: fvogt
Subscribers: aacid, fvogt, plasma-devel
Tags: #plasma
Differential Revision: https://phabricator.kde.org/D10188
Alexander Lohnau
Kai Uwe Broulik
Yuri Chornoivan
David Edmundson