D23578: Before requesting a scan, check the time threshold

[Méven Car]

meven created this revision.
meven added a reviewer: Plasma.
Herald added a project: Plasma.
Herald added a subscriber: plasma-devel.
Herald added a reviewer: jgrulich.
meven requested review of this revision.

REVISION SUMMARY
  Currently we don't follow the documented way to check requestScan results and if it has succeeded.
  This ends up generating, retries and warning such as :
  
    plasma-nm: Wireless scan on "wlp2s0" failed: "Scanning not allowed immediately following previous scan"
  
  This patch checks if the device has not finished a scan within the last 10 seconds and that the last scan finished before allowing more scans to be requested.
  
  Depends on D23576 <https://phabricator.kde.org/D23576>

REPOSITORY
  R116 Plasma Network Management Applet

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D23578

AFFECTED FILES
  libs/handler.cpp

To: meven, #plasma, jgrulich
Cc: plasma-devel, LeGast00n, The-Feren-OS-Dev, jraleigh, fbampaloukas, GB_2, ragreen, Pitel, ZrenBot, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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