tdf#130857 qt weld: Add QtInstanceExpander

Add a new QtInstanceExpander class that is the
weld::Expander implementation using a native
Qt widget. It uses the custom QtExpander widget
added in

Change-Id: Id2366834cb542eba613ea087e70f3a812d20fa89
Author: Michael Weghorn <m.weghorn@posteo.de>
Date:   Sun Nov 24 00:07:44 2024 +0100

tdf#130857 qt weld: Implement "GtkExpander" equivalent

Extend QtExpander to provide what's needed
to implement the QtInstanceExpander methods.

Let QtInstanceBuilder::weld_expander return an
instance of the new class.

Signal handling still needs to be implemented
(calling `weld::Expander::signal_expanded` when
the expanded state is toggled).

QtInstanceExpander is e.g. needed by the "Set Password"
dialog. ("File" -> "Save As", check "Save with password"
checkbox and press "Save" to trigger the dialog.)

Change-Id: I7e3a332c0417b1897ae57d7d4c29609245fb5e19
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/177197
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

0 files changed, 0 insertions, 0 deletions