D15268: [Folder View] Use KIO::PreviewJob::defaultPlugins() for default plugins

[Kai Uwe Broulik]

broulik created this revision.
broulik added reviewers: Plasma, VDG, hein.
Herald added a project: Plasma.
Herald added a subscriber: plasma-devel.
broulik requested review of this revision.

REVISION SUMMARY
  Rather than a hardcoded list of only two thumbnailers.
  All of this is done under the hood so the QML part doesn't need to be changed.
  This is the same behavior as Dolphin uses, when the list of thumbnailers is empty, the default set (which includes all thumbnailers except textthumbs) is used.

TEST PLAN
  Before
  F6234921: Screenshot_20180904_163023.png <https://phabricator.kde.org/F6234921>
  After
  F6234922: Screenshot_20180904_163036.png <https://phabricator.kde.org/F6234922>
  
  - Verified that all the thumbnails are shown
  - Verified that the previewer config dialog has the correct plugins checked
  - Verified that changing the previewer config updates the thumbnails and has the setting stored, execpt when the default set of previews is enabled, nothing is stored so that when `defaultPlugins` would change, it is picked up automatically
  
  I don't exactly know why the `ttf` thumbnail looks different from Dolphin where it is just a couple of letters instead of a full sentence

REPOSITORY
  R119 Plasma Desktop

REVISION DETAIL
  https://phabricator.kde.org/D15268

AFFECTED FILES
  containments/desktop/package/contents/config/main.xml
  containments/desktop/plugins/folder/foldermodel.cpp
  containments/desktop/plugins/folder/foldermodel.h
  containments/desktop/plugins/folder/previewpluginsmodel.cpp

To: broulik, #plasma, #vdg, hein
Cc: plasma-devel, ragreen, Pitel, ZrenBot, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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