[platform-ui-dev] Lazily expand a tree item with a subset of all childre

[Hermann Weindl <hermann.weindl@xxxxxxxxx>]

Hello,

As the eclipse platform looks very promising to us we are currently 
evaluating if we could move from Swing to SWT.
At least one question remains. In our application we visualize very big 
data structures in Swing using a JTree (a TreeNode can easily have as many 
as 50000 children) and we are only providing the visible TreeNodes. This is 
quite easy and performs well as the API supports getChildCount() and 
getChild().

As far as we see in SWT it is necessary to add all TreeItems to it's parent 
when a node is expanded. All that we found is an example to lazily provide 
the children of it's parent. For us this is not enough. Is there any 
concept so that this would be much more lazy eg. to "load" only the visible 
ones?

Any hints are welcome.
Thank you.

--hermann