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
public boolean equals(Object a, Object b) {
				return ((TreePath)a).equals(((TreePath)b), comparer);
			}
			public int hashCode(Object element) {
				return ((TreePath)element).hashCode(comparer);
			}};
        CustomHashtable expandedTreePaths = new CustomHashtable(treePaths.length * 2 + 1, treePathComparer);
        for (int i = 0; i < treePaths.length; ++i) {
            TreePath treePath = treePaths[i];
            
            
            
            
            internalExpand(treePath, false);
            expandedTreePaths.put(treePath, treePath);
        }
        
        
        
        
        internalSetExpandedTreePaths(expandedTreePaths, getControl(), new TreePath(new Object[0]));
    }
	/**
     * Sets whether the node corresponding to the given element or tree path is expanded or
     * collapsed.
     * 
     * @param elementOrTreePath
     *           the element
     * @param expanded
     *           <code>true</code> if the node is expanded, and <code>false</code>