On Cocoa the NSImageView implements the dragging target methods but is
itself not able to function as a dragging source. You have to implement
a subclass to get this behaviour. On GNUstep we have had both sides
implemented for a long time now. This could lead to a problem when
porting over from Cocoa, if an NSImageView was editable (that is, was
allowed to receive a dropped image) on GNUstep it could as well start a
drag operation.
Although I prefer the more symmetrical GNUstep approach I am now going
to change the code and move the dragging source code into a subclass
GSImageView, which will be exported by the NSImageView.h file. That way
the NSImageView will behave more like its Cocoa counterpart, but the
additional GNustep behaviour is still available for those that need it.
You will only have to switch over to a different class, GSImageView
instead of NSImaveView.
Are there any objections to this plan?
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