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
sb.append(ResourcePatternFilter.COMMA_SEPARATOR);
            sb.append(patterns[i]);
        }
        getPlugin().getPreferenceStore().setValue(
                ResourcePatternFilter.FILTERS_TAG, sb.toString());
         
        IPreferenceStore preferenceStore = IDEWorkbenchPlugin.getDefault()
                .getPreferenceStore();
        String storedPatterns = preferenceStore
                .getString(ResourcePatternFilter.FILTERS_TAG);
        if (storedPatterns.length() > 0)
            preferenceStore.setValue(ResourcePatternFilter.FILTERS_TAG, ""); 
    }
    /**
     * @see IWorkbenchPart#setFocus()
     */
    public void setFocus() {
        getTreeViewer().getTree().setFocus();
    }
    /**
     * Note: For experimental use only.
     * Sets the decorator for the navigator.
     * <p>
     * As of 2.0, this method no longer has any effect.
     * </p>
     *
     * @param decorator a label decorator or <code>null</code> for no decorations.
     * @deprecated use the decorators extension point instead; see IWorkbench.getDecoratorManager()
     */
    public void setLabelDecorator(ILabelDecorator decorator) {