Bugfix: In Eclipse 4.x (e4) the selection provided by HandlerUtil.getCurrentSelection is not always correct --> Use PlatformUITools instead.

Still to fix: Problems in e4 with activeWhen and enabledWhen. The whole Handler-Selection Infrastructure from Eclipse 3.x seems to be broken in e4. --> Change to e4 infrastructure?
Bugfix: In Eclipse 4.x (e4) the selection provided by HandlerUtil.getCurrentSelection is not always correct --> Use PlatformUITools instead.

Still to fix: Problems in e4 with activeWhen and enabledWhen. The whole Handler-Selection Infrastructure from Eclipse 3.x seems to be broken in e4. --> Change to e4 infrastructure?