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
* Removes all items from the given control.
     * 
     * @param control
     *           the control
     */
    protected abstract void removeAll(Control control);
    /**
     * Removes a listener for expand and collapse events in this viewer. Has no
     * affect if an identical listener is not registered.
     * 
     * @param listener
     *           a tree viewer listener
     */
    public void removeTreeListener(ITreeViewerListener listener) {
        treeListeners.remove(listener);
    }
    /**
     * This implementation of reveal() reveals the given element or tree path.
     */
    public void reveal(Object elementOrTreePath) {
        Assert.isNotNull(elementOrTreePath);
        Widget w = internalExpand(elementOrTreePath, true);
        if (w instanceof Item) {
			showItem((Item) w);
		}
    }
    /**
     * Returns the rightmost visible descendent of the given item. Returns the
     * item itself if it has no children.
     *