I am using a table-tree viewer to observe the internal data structure of
some object.
The use may collapse and expand this tree-view as desired to focus on
particular elements in the tree.
If some data changes I fire a refresh on that tree (alas, there is no
method to signal specifically which element has changed).
That refresh then always causes the entire tree to refresh - which I
wouldn't mind since the speed is not a problem(, yet) - but this refresh
also always expands/collapses the treeview to the expand level initially
chosen. That means, that the user's selections and changes re. focus are
lost and one has to search the particular tree-element one is interested
in again (and since there are lots of changes this is simply
unacceptable from a usability point of view).
Can one somehow trigger a refresh, but only of those elements that are
currenly visible, i.e. leave the current expansion of subelements alone?