D26279: ActionToolBar: Only show the overflow button if there are visible items in the menu

[Arjen Hiemstra]

ahiemstra created this revision.
ahiemstra added a reviewer: Kirigami.
Herald added a project: Kirigami.
Herald added a subscriber: plasma-devel.
ahiemstra requested review of this revision.

REVISION SUMMARY
  This fixes https://bugs.kde.org/show_bug.cgi?id=415412 , which was occuring because the
  overflow button did not properly check to see if the actions in the menu were actually
  visible.
  
  BUG: 415412

TEST PLAN
  The example code from the linked bug report now works correctly.

REPOSITORY
  R169 Kirigami

BRANCH
  actiontoolbar_contextbutton_visible

REVISION DETAIL
  https://phabricator.kde.org/D26279

AFFECTED FILES
  src/controls/ActionToolBar.qml

To: ahiemstra, #kirigami
Cc: plasma-devel, fbampaloukas, GB_2, domson, dkardarakos, ngraham, apol, ahiemstra, davidedmundson, mart, hein
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