| /******************************************************************************* |
| * Copyright (c) 2006 Sybase, Inc. 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: |
| * Sybase, Inc. - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.pagedesigner.commands; |
| |
| import java.util.List; |
| |
| import org.eclipse.gef.EditPart; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jst.pagedesigner.dom.DOMPositionHelper; |
| import org.eclipse.jst.pagedesigner.dom.EditHelper; |
| import org.eclipse.jst.pagedesigner.dom.EditValidateUtil; |
| import org.eclipse.jst.pagedesigner.parts.SubNodeEditPart; |
| import org.eclipse.jst.pagedesigner.validation.caret.ActionData; |
| import org.eclipse.jst.pagedesigner.validation.caret.IMovementMediator; |
| import org.eclipse.jst.pagedesigner.validation.caret.InlineEditingNavigationMediator; |
| import org.eclipse.jst.pagedesigner.viewer.DesignPosition; |
| import org.eclipse.jst.pagedesigner.viewer.DesignRange; |
| import org.eclipse.jst.pagedesigner.viewer.DesignRefPosition; |
| import org.eclipse.jst.pagedesigner.viewer.IHTMLGraphicalViewer; |
| import org.w3c.dom.Node; |
| |
| /** |
| * @author mengbo |
| */ |
| public class DeleteNodeCommand extends DesignerCommand { |
| private static final String COMMAND_LABEL = CommandResources |
| .getString("DeleteNodeCommand.Label.DeleteNode"); //$NON-NLS-1$ |
| |
| private DesignRange _prevRange; |
| |
| /** |
| * @param label |
| * @param viewer |
| */ |
| public DeleteNodeCommand(IHTMLGraphicalViewer viewer) { |
| super(COMMAND_LABEL, viewer); |
| } |
| |
| protected void preExecute() { |
| _prevRange = _viewer.getRangeSelection(); |
| DesignPosition position = findObjectModePosition(); |
| _prevRange = new DesignRange(position, position); |
| super.preExecute(); |
| } |
| |
| private DesignPosition findObjectModePosition() { |
| DesignPosition result = null; |
| IMovementMediator validator = new InlineEditingNavigationMediator( |
| new ActionData(ActionData.KEYBOARD_NAVAGATION, null)); |
| DesignPosition position = getCurrentObjectPosition(); |
| if (position != null) { |
| if (!validator.isValidPosition(position)) { |
| result = null; |
| } else { |
| result = position; |
| } |
| } |
| return result; |
| } |
| |
| private DesignPosition getCurrentObjectPosition() { |
| DesignRange result = null; |
| if (_viewer.isInRangeMode()) { |
| result = _viewer.getRangeSelection(); |
| } else { |
| List parts = _viewer.getSelectedEditParts(); |
| if (parts.size() > 0) { |
| EditPart selection = (EditPart) parts.get(0); |
| if (selection instanceof SubNodeEditPart) { |
| DesignPosition position = new DesignRefPosition(selection, |
| false); |
| position = DOMPositionHelper.toDesignPosition(EditHelper |
| .ensureDOMPosition(DOMPositionHelper |
| .toDOMPosition(position))); |
| result = new DesignRange(position, position); |
| } |
| } |
| } |
| return result != null && result.isValid() ? result.getEndPosition() |
| : null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jst.pagedesigner.commands.DesignerCommand#doExecute() |
| */ |
| protected void doExecute() { |
| List parts = getViewer().getSelectedEditParts(); |
| for (int i = 0, n = parts.size(); i < n; i++) { |
| EditPart part = (EditPart) parts.get(i); |
| Object model = part.getModel(); |
| if (model instanceof Node) { |
| EditValidateUtil.validNode((Node) model); |
| Node parent = ((Node) model).getParentNode(); |
| model = parent.removeChild((Node) model); |
| } |
| } |
| } |
| |
| protected ISelection getAfterCommandDesignerSelection() { |
| if (_prevRange.isValid()) { |
| return _prevRange; |
| } |
| return null; |
| } |
| } |