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org.eclipse.gef.ui.parts.TreeViewer and DND [message #238207] Fri, 31 August 2007 10:12
Steve Farrell is currently offline Steve Farrell
Messages: 8
Registered: July 2009
Junior Member
We have created a couple of trees using
org.eclipse.gef.ui.parts.TreeViewer. They both support drag and drop, but
not well at all when there is more than a screen full of data. If you try
to drag a tree item up past the edge of the screen, the tree start to
shake like it is trying to do an automatic scroll, but just can not do it.
Is this just a known bug with TreeViewer or is there some way I can fix
this?

Another related issue is trying to drag an item in between two items that
have children. This is basically almost impossible. The items with the
children auto-expand so quickly that our users can not drop the item where
they want. Here is an example

A
--child
--child
B
--child
--child
C

The problem is when you try to drag C between A and B. B auto-expands so
C almost always is dropped as a child of B.
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