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/*******************************************************************************
* Copyright (c) 2001, 2004 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.dnd;
import java.util.Collection;
import java.util.Iterator;
import org.eclipse.swt.dnd.DND;
import org.eclipse.wst.common.ui.internal.dnd.DefaultDragAndDropCommand;
import org.eclipse.wst.dtd.core.internal.CMBasicNode;
import org.eclipse.wst.dtd.core.internal.CMGroupNode;
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.Element;
import org.eclipse.wst.dtd.ui.internal.DTDUIMessages;
public class DragContentModelCommand extends DefaultDragAndDropCommand {
public DragContentModelCommand(Object target, float location, int operations, int operation, Collection sources) {
super(target, location, operations, operation, sources);
}
public boolean canExecute() {
if (!(target instanceof CMNode)) {
return false;
}
Iterator iter = sources.iterator();
while (iter.hasNext()) {
Object source = iter.next();
if (!(source instanceof CMNode)) {
return false;
}
}
return true;
}
public void execute() {
DTDNode referenceNode = (DTDNode) target;
if (referenceNode instanceof CMNode) {
DTDFile dtdFile = referenceNode.getDTDFile();
DTDNode parent = (DTDNode) referenceNode.getParentNode();
dtdFile.getDTDModel().beginRecording(this, DTDUIMessages._UI_MOVE_CONTENT); //$NON-NLS-1$
boolean parentIsElement = false;
Element element = null;
CMGroupNode group = null;
if (parent instanceof Element) {
parentIsElement = true;
element = (Element) parent;
}
else {
group = (CMGroupNode) parent;
}
if (element == null && group == null) {
// no parent to add to
return;
}
Iterator iter = sources.iterator();
while (iter.hasNext()) {
DTDNode node = (DTDNode) iter.next();
if (node instanceof CMNode) {
if (parentIsElement) {
if (element.getContentModel() == node) {
continue;
}
element.replaceContentModel(this, (CMNode) node);
}
else {
if (referenceNode == node || (isAfter() && referenceNode.getNextSibling() == node) || (!isAfter() && node.getNextSibling() == referenceNode)) {
continue;
}
group.insertIntoModel(this, (CMNode) referenceNode, (CMNode) node, isAfter());
}
DTDNode nodeParent = (DTDNode) node.getParentNode();
nodeParent.delete(this, node);
}
}
dtdFile.getDTDModel().endRecording(this);
}
}
public int getFeedback() {
DTDNode referenceNode = (DTDNode) target;
if (referenceNode instanceof CMNode) {
CMNode cmNode = (CMNode) referenceNode;
if (cmNode.isRootElementContent() && cmNode instanceof CMBasicNode) {
return DND.FEEDBACK_SELECT;
}
}
return super.getFeedback();
}
}
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