D13178: Compress calls to configuration slots upon new connections

[Jacopo De Simoi]

jacopods created this revision.
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Restricted Application added a subscriber: plasma-devel.
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REVISION SUMMARY
  Some input devices register several copies of themselves upon connection (e.g. a mouse registers as a keyboard as well, or a keyboard registers twice as a keyboard).  Hence the keyboard/mouse configuration is called multiple times for no reason.
  
        
  
  This commit compresses the configuration calls using a singleshot timer.

REPOSITORY
  R119 Plasma Desktop

REVISION DETAIL
  https://phabricator.kde.org/D13178

AFFECTED FILES
  kcms/keyboard/keyboard_daemon.cpp
  kcms/keyboard/keyboard_daemon.h

To: jacopods
Cc: plasma-devel, ragreen, Pitel, ZrenBot, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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