Bug 401370

Summary: Discover sometimes freezes for ~0.5 sec when refreshing/pulling down multiple times 'Checking for updates' page
Product: [Applications] Discover Reporter: Alexander Mentyu <notuxius>
Component: Updates (interactive)Assignee: Aleix Pol <aleixpol>
Status: RESOLVED FIXED    
Severity: normal    
Priority: NOR    
Version: 5.14.3   
Target Milestone: ---   
Platform: Neon   
OS: Linux   
Latest Commit: https://commits.kde.org/discover/6f1bf941066cd8e40480feddb0c0462d0615e147 Version Fixed In:

Description Alexander Mentyu 2018-11-24 17:38:37 UTC 
STEPS TO REPRODUCE
1. Launch Discover.
2. Select bottom left Checking for updates.../No Updates page.
3. Click mouse button and pull down this page or press 'Check for Updates' button in order to begin update process.
4. Without waiting for the current update process to finish - pull down the page again - Discover window becomes unresponsive.
5. Click on Discover window.

OBSERVED RESULT
Discover crashes

EXPECTED RESULT
Updates page cannot be pulled down upon update checking/process in progress

SOFTWARE/OS VERSIONS
Operating System: KDE neon Developer Edition
KDE Plasma Version: 5.14.80
KDE Frameworks Version: 5.53.0
Qt Version: 5.11.2
Kernel Version: 4.15.0-39-generic

ADDITIONAL INFORMATION
Reproduciblity: Very often
Comment 1 Aleix Pol 2018-11-25 01:25:52 UTC 
Can you please provide a backtrace?
Comment 2 Alexander Mentyu 2018-12-06 20:41:29 UTC 
It's freezing only for about 0.5 sec sometimes currently.

Possible solution:
1. 'Checking for updates..' text cannot be pulled down again.
2. 'Already checking for updates' popup message appears.
Comment 3 Aleix Pol 2018-12-13 04:04:54 UTC 
Then it's not crashing?
Comment 4 Alexander Mentyu 2018-12-13 10:54:44 UTC 
It's currently sluggish on responding for some drag downs and sometimes freezes for ~half a second - but not crashes
Comment 5 Aleix Pol 2018-12-19 17:39:54 UTC 
Git commit 6f1bf941066cd8e40480feddb0c0462d0615e147 by Aleix Pol.
Committed on 19/12/2018 at 17:39.
Pushed by apol into branch 'master'.

pk: don't offer launching the SDK package

Could probably find a more generic way to fix it, will wait until we get more use-cases.

M  +11   -1    libdiscover/backends/PackageKitBackend/AppPackageKitResource.cpp
M  +1    -1    libdiscover/backends/PackageKitBackend/AppPackageKitResource.h

https://commits.kde.org/discover/6f1bf941066cd8e40480feddb0c0462d0615e147