Bug 94456 [Undo] - Resource Navigator not showing workspace undo actions
The Resource Navigator is not showing the workspace undo actions. Package Explorer is correctly working. Need to look at the difference in the way the action handlers are set up.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/navigator/ResourceNavigator.java
ArrayList selectedFilters = new ArrayList();
                ArrayList unSelectedFilters = new ArrayList();
                for (int i = 0; i < children.length; i++) {
                    if (children[i].getString(TAG_IS_ENABLED).equals(
                            String.valueOf(true)))
                        selectedFilters.add(children[i].getString(TAG_ELEMENT));
                    else
                        
                        unSelectedFilters.add(children[i]
                                .getString(TAG_ELEMENT));
                }
                /* merge filters from Memento with selected = true filters from plugins
                 * ensure there are no duplicates & don't override user preferences	 */
                List pluginFilters = FiltersContentProvider.getDefaultFilters();
                for (Iterator iter = pluginFilters.iterator(); iter.hasNext();) {
                    String element = (String) iter.next();
                    if (!selectedFilters.contains(element)
                            && !unSelectedFilters.contains(element))
                        selectedFilters.add(element);
                }
                
                String[] patternArray = new String[selectedFilters.size()];
                selectedFilters.toArray(patternArray);
                getPatternFilter().setPatterns(patternArray);
            } else { 
                String filters[] = new String[children.length];
                for (int i = 0; i < children.length; i++) {
                    filters[i] = children[i].getString(TAG_ELEMENT);
                }
                getPatternFilter().setPatterns(filters);