[Gzz] Events and space changes

[Matti Katila]

Hi!

Space doesn't make changes when dragging the mouse. Does anyone know the 
problem? I have a feeling that no space updates are made while events 
but that's only a guess. In historical versions of PP the space is made 
from ModularDeltaSpace. Would this help to solve the problem? Though you could 
say applyDelta(). OTOH, javadoc says about applyDelta:

   "Apply a delta to this space. Also triggers observers. However, a 
    change applied by applyDelta is NOT visible in the next getDelta()." 

There are no getDelta anywhere in source. This is not vital thing for PP 
like save/load is but I would like to know the reason, fix it and that's 
all folks.


   -Matti