D10973: [media controller applet] Support MPRIS services where CanPause==false

[Friedrich W. H. Kossebau]

kossebau created this revision.
kossebau added a reviewer: broulik.
Restricted Application added a project: Plasma.
Restricted Application added a subscriber: plasma-devel.
kossebau requested review of this revision.

REVISION SUMMARY
  Currently the media controller only works with MPRIS services which support
  the PlayPause command. By the MPRIS spec this is an optional feature though.
  While most players out there support this, the MPRIS support in Gwenview
  currently worked on does not (would need some more rewrite of internals).
  Which makes the Media controller applet and/or Gwenview look broken :)
  
  To keep the current design with a central Play/Not Play button, this patch
  changes its behaviour depending on the CanPause flag:
  CanPause=true ->  show either Play or Pause
  CanPause=false -> show either Pkay or Stop
  That should stay close to what people need.

TEST PLAN
  Works with Gwenview patched with MPRIS support.
  Works with VLC, but might need more testing to add some work-arounds as
  mentioned before by broulik.

REPOSITORY
  R120 Plasma Workspace

BRANCH
  mpriscontrollersupportnocanpause

REVISION DETAIL
  https://phabricator.kde.org/D10973

AFFECTED FILES
  applets/mediacontroller/contents/ui/ExpandedRepresentation.qml
  applets/mediacontroller/contents/ui/main.qml

To: kossebau, broulik
Cc: plasma-devel, ZrenBot, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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