Bug 108102 [Viewers] Project expands in wrong working set
I am using "Show->Working Sets" in the package explorer. Some of the working sets contain the same project: Working Set-1: - Project-A - Project-B - Project-C Working Set-2: - Project-B - Project-C - Project-D If I now double-click "Working Set-1.Project-B" "Project-B" in working set "Working Set-2" will be expanded. If the working set "Working Set-2" itself is not expanded it will seem as if nothing happens, but after expanding "Working Set-2" one can see the changed state of the project. Double-clicking "Working Set-2.Project-B" works as expected.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
Item item = items[i];
            Object data = item.getData();
            if (data != null) {
                
                
                boolean expanded = expandedElements.remove(data) != null;
                if (expanded != getExpanded(item)) {
                    if (expanded) {
                        createChildren(item);
                    }
                    setExpanded(item, expanded);
                }
            }
            if (expandedElements.size() > 0) {
            	internalSetExpanded(expandedElements, item);
            }
        }
    }
    /**
     * Sets the expanded state of all items to correspond to the given set of
     * expanded tree paths.
     * 
     * @param expandedTreePaths
     *           the set (element type: <code>TreePath</code>) of elements
     *           which are expanded
     * @param widget
     *           the widget
     */
    private void internalSetExpandedTreePaths(CustomHashtable expandedTreePaths, Widget widget, TreePath currentPath) {
        Item[] items = getChildren(widget);