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DW (8/15/01 12:24:09 PM) We would like API to traverse the visible elements in a tree viewer, given a starting object. Use of the visitor would work well. The traversal should traverse the starting object and its visible subtree. This will help implement features such as "copy to clipboard".
Defer
Reopen for investigation
Is this still an issue? Is getExpandedState(Object element) not sufficient? I'm trying to clean up old bugs...
I don't think this solves the entire problem, as we'd like to traverse the visible, items - not just exapanded. For example, if a parent is expanded, the children are visible, but the children are *not* expanded.
Are you asking that something like the code below should be added to AbstractTreeViewer? Since the code does not need access to internals, you could implement it yourself. Why should it be API? public static void collectVisibleElements(TreeViewer tv, ITreeContentProvider cp, Object[] elements, List result) { for(int i=0; i<elements.length; i++) { Object element = elements[i]; result.add(element); if(tv.getExpandedState(element)) { collectVisibleElements(tv, cp, cp.getChildren(element), result); } } }
Yes, we can do that in our viewer. Thought it might be generally useful.
*** Bug 102104 has been marked as a duplicate of this bug. ***
*** Bug 59140 has been marked as a duplicate of this bug. ***
Upping priority. In fact, this seems to be generally useful, and easy enough to do.
(In reply to comment #5) > public static void collectVisibleElements(TreeViewer tv, ITreeContentProvider > cp, Object[] elements, List result) { > for(int i=0; i<elements.length; i++) { > Object element = elements[i]; > result.add(element); > if(tv.getExpandedState(element)) { > collectVisibleElements(tv, cp, cp.getChildren(element), result); > } > } > } A little bit more than this would be great. This code returns all children of the visible and expanded elements, even the children that are not visible. I seems like there is no way to get only the visible children of a tree without touching internals.
deferring
Hitesh is now responsible for watching bugs in the [Viewers] component area.
This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet. If you have further information on the current state of the bug, please add it. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant.
