Previously we only checked when connecting to the server whether it had
the minimum required version but didn't act accordingly in the various
functions that use the functionality of later versions. If there were a
server in the wild, that actually would not have this functionality,
there would have been a crash. Fix this by checking the version before
using the functionality and gracefully abort it.
There was an update the of the toplevel manager protocol. Unfortunately,
there are no new interesting updates with regard to the taskbar
implementation. Nonetheless, update the protocol xml files to the latest
version so that the implementation is up-to-date.
While being there, also change the debug warning that is shown when
there is a version mismatch between the server and client version of the
protocol.
Move the lower_app_id lookup logic completely in the image_load_icon
method and use it also when looking up the icon from the desktop files
as well as icon themes.
If there are multiple icon themes defined in the config option
'icon-theme' the module will try from left to right to find an icon.
The system default will always be added to this list.
When using additional format options in addition to {icon} the format is
separated into text before and text after the icon. Each of the texts is
displayed in a separate label one before and one after the image for the
icon.
The code updating the labels on changes used the wrong format strings
when updating the label after the icon.
When only the option 'on-click-right' was set and no other 'on-click'
option than the taskbar module wouldn't register for click events and
hence those events were handled by the generic AModule::on-click code.
This code would try to start a shell with the specified command, which
wouldn't make any sense in this circumstances.
The taskbar code falsely checked for the 'on-click-left' option instead
for the 'on-click-right' when deciding to register for click events.
Till Smejkal