Recursive expansion of hierarchies (ALT+Click) does not work properly

[ykazakov]

If I click on owl:Thing in the class hierarchy view (asserted or inferred) while holding the ALT/Option key, the hierarchy does not expand recursively, just one level (as without ALT).
If, however, while holding ALT I first close the hierarchy and then open it, it expands correctly.
I have looked in the debugger, and it seems that the culprit is that in OWLObjectTree the mouse listener which sets altDown is fired after the TreeExpansionListener that checks the value of altDown.

Tested on mac OS X 10.11.5 with the latest Protege 5 (built from sources):

[matthewhorridge]

I can't reproduce this using the Mac OS L&F, but using the Protege LAF I can.

[ykazakov]

Indeed, I had a different L&F. With Mac OS X L&F seems to work fine. Still, I think it would be better not to rely on the order in which the listeners are called.

[matthewhorridge]

Yep, I'm rewriting the code....

[ykazakov]

I just tested Alt+Click for the latest version built from master, and while the recursive expansion now works, something is wrong with the label -- it is rotated 180 degrees, not 90. See the screenshot:

[matthewhorridge]

This was the visual artefact that I observed with the fix. On OS X there's an animation of the triangle and it gets stuck on the second frame with this fix. I'm not sure why this occurs because I haven't looked into it any further. However, I thought it was still worth having the fix over not having it.