/*******************************************************************************
* 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 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;
}
}