tdf#130857 qt weld: Add a QtInstanceTextView

Add a native Qt implementation for weld::TextView
QtInstanceTextView, that uses a QPlainTextEdit,
and let QtInstanceBuilder use it when it
encounters a "GtkTextView" object in a .ui file.

Implement methods which are probably the most relevant
ones. For now, trigger an assert in case any of the not yet
implemented methods gets called.

None of the .ui files currently marked as
supported by QtInstanceBuilder uses this new class
yet, but it will be needed to support more in the future,
e.g. for cui/uiconfig/ui/objecttitledescdialog.ui.

With this commit in place, adding that file to the
set of supported ones in
QtInstanceBuilder::IsUIFileSupported makes the dialog
somehow show up as a native Qt dialog with the qt6 VCL
plugin when e.g. selecting a QR code in an existing
document, then opening the context menu and choosing
"Alt Text", but there are various issues that still
need to be fixed before it can actually be claimed
as working/supported.

Change-Id: Id7217d4a8a86f953d8b289c8a09cb8d1e2040bf1
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/174495
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

0 files changed, 0 insertions, 0 deletions