D21670: Enforce use of the reset timer for clearing the model

[Fabian Vogt]

fvogt created this revision.
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REVISION SUMMARY
  Currently when the query string changes, krunner sends a signal with no matches
  directly, which circumvents use of the reset timer.

TEST PLAN
  Enter =1+1, results are shown. Add another "1", the shown 2 switches to a 12
  instantly without hiding the previous result for a few frames.

REPOSITORY
  R112 Milou

BRANCH
  resetchange

REVISION DETAIL
  https://phabricator.kde.org/D21670

AFFECTED FILES
  lib/sourcesmodel.cpp

To: fvogt, #plasma
Cc: plasma-devel, LeGast00n, ericadams, jraleigh, GB_2, ragreen, Pitel, ZrenBot, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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