Bug 304926 [CommonNavigator] TextActionHandler in o.e.navigator.resources is a poor duplicate of the good one
It looks like this was copied from the real one in org.eclipse.ui.ide when the CNF was created because it needed an updateActionBars() method. Everything else is the same, except they have actually diverged due to many fixes from Paul last year. I will modify the original to add the required method and refer to the original.
bundles/org.eclipse.ui.navigator.resources/src/org/eclipse/ui/internal/navigator/resources/actions/EditActionGroup.java
* are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 ******************************************************************************/
package org.eclipse.ui.internal.navigator.resources.actions;
import org.eclipse.core.resources.IResource;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.window.IShellProvider;
import org.eclipse.swt.SWT;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.IWorkbenchCommandConstants;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.actions.ActionGroup;
import org.eclipse.ui.actions.DeleteResourceAction;
import org.eclipse.ui.navigator.ICommonMenuConstants;
/**
 * @since 3.2
 * 
 */
public class EditActionGroup extends ActionGroup {
	private Clipboard clipboard;
	private CopyAction copyAction;