D20582: Only consider player gone if really no longer part of the visible DOM

[Kai Uwe Broulik]

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

REVISION SUMMARY
  When the player is reparented we get a DOM removal event which prompts us to forget the player and transfer controls to another player. However, the player might just be reparented elsewhere. There's a race between we transfer controls to previous player on a different tab and us activating the player again when it reappeared.

TEST PLAN
  Switching full screen back and forth in YouTube works fine now (now, really! :D)
  Verified that closing a twitter video overlay still considers the player gone (which was the main point of this mutation observer, detecting when a video player is removed dynamically)

REPOSITORY
  R856 Plasma Browser Integration

REVISION DETAIL
  https://phabricator.kde.org/D20582

AFFECTED FILES
  extension/content-script.js

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