| /******************************************************************************* |
| * Copyright (c) 2001, 2005 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * 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 |
| * Jens Lukowski/Innoopract - initial renaming/restructuring |
| * |
| *******************************************************************************/ |
| |
| |
| package org.eclipse.wst.dtd.ui.internal.views.contentoutline.actions; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.ui.actions.SelectionListenerAction; |
| import org.eclipse.wst.dtd.core.internal.CMNode; |
| import org.eclipse.wst.dtd.core.internal.DTDFile; |
| import org.eclipse.wst.dtd.core.internal.DTDNode; |
| import org.eclipse.wst.dtd.core.internal.util.DTDBatchNodeDelete; |
| import org.eclipse.wst.dtd.ui.internal.DTDUIMessages; |
| |
| |
| public class DeleteAction extends SelectionListenerAction { |
| |
| public DeleteAction(String label) { |
| super(label); |
| } |
| |
| public void run() { |
| IStructuredSelection selection = getStructuredSelection(); |
| |
| Iterator iter = selection.iterator(); |
| DTDBatchNodeDelete batchDelete = null; |
| DTDFile dtdFile = null; |
| while (iter.hasNext()) { |
| Object element = iter.next(); |
| if (element instanceof DTDNode) { |
| DTDNode node = (DTDNode) element; |
| dtdFile = node.getDTDFile(); |
| if (batchDelete == null) { |
| batchDelete = new DTDBatchNodeDelete(dtdFile); |
| } |
| batchDelete.addNode((DTDNode) element); |
| } |
| } |
| dtdFile.getDTDModel().beginRecording(this, DTDUIMessages._UI_LABEL_DTD_FILE_DELETE); //$NON-NLS-1$ |
| batchDelete.deleteNodes(this); |
| dtdFile.getDTDModel().endRecording(this); |
| } |
| |
| public boolean updateSelection(IStructuredSelection sel) { |
| if (!super.updateSelection(sel)) |
| return false; |
| |
| Object selectedObject = sel.getFirstElement(); |
| if (selectedObject instanceof DTDNode && !(selectedObject instanceof CMNode && ((CMNode) selectedObject).isRootElementContent())) { |
| setEnabled(true); |
| return true; // enable delete menu item |
| } |
| else { |
| setEnabled(false); |
| return false; // disable it - grey out |
| } |
| } |
| } |