D29294: Add support for layers to PagePoolAction.

[Mason McParlane]

masonm created this revision.
masonm added reviewers: Kirigami, mart.
masonm added a project: Kirigami.
masonm requested review of this revision.

REVISION SUMMARY
  Currently PagePoolAction only supports pushing to a pageStack, but often it makes sense to use layers to push modal/contextual pages (outside of the primary pageStack flow). This change introduces support for a "useLayers" property that can be set on PagePoolAction, allowing it use the pageStack.layers StackView (if it exists). It also includes a unit test and a couple fixes uncovered by the test.

TEST PLAN
  See the tst_layers unit test included.

REPOSITORY
  R169 Kirigami

BRANCH
  add-pagepool-layer-support (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D29294

AFFECTED FILES
  .gitignore
  autotests/CMakeLists.txt
  autotests/pagepool/tst_layers.qml
  src/controls/PagePoolAction.qml
  src/controls/PageRow.qml
  src/pagepool.cpp
  src/pagepool.h

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