Summary:
The main difference compared to version 2 is additional drag and drop
actions. The source and destination can negotiate whether the data
should be copied or moved or the user should be asked for either or.
This seems to be important for GTK, but is not yet implemented in Qt.
The main motivation for adding support is that it is required by SDL to
launch on Wayland.
BUG: 386993
Test Plan: Extended test case, sdl apps now start
Reviewers: #frameworks, #plasma, #kwin
Subscribers: plasma-devel
Tags: #plasma_on_wayland, #frameworks
Differential Revision: https://phabricator.kde.org/D9136
The Resource base class is supposed to be used by all interface
classes which get created for a wl_resource.
Most interface classes are adjusted, but there are some exceptions:
* BufferInterface: is different as the wl_resource is already created
* PointerInterface and KeyboardInterface: those two need changes, the
implementation differs from all other interface implementations.
