/*******************************************************************************
* Copyright (c) 2007 Exadel, Inc. and Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Exadel, Inc. and Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.common.meta.action.impl.handlers;
import java.util.*;
import org.jboss.tools.common.model.*;
import org.jboss.tools.common.model.undo.*;
import org.jboss.tools.common.meta.action.impl.*;
public class MoveHandler extends AbstractHandler {
public MoveHandler() {
data = new XEntityDataImpl[0];
}
public boolean isEnabled(XModelObject object) {
XModelObject o = object.getModel().getModelBuffer().source();
if(o == null || object == null) return false;
XModelObject p = object.getParent();
return (p != null && o.getParent() == p &&
p.isObjectEditable() && (p instanceof XOrderedObject) && ((XOrderedObject)p).areChildrenOrdered());
}
public void executeHandler(XModelObject object, Properties prop) throws XModelException {
if(!isEnabled(object)) return;
XModelObject o = object.getModel().getModelBuffer().source();
XModelObject p = object.getParent();
XOrderedObject oo = (XOrderedObject)p;
int to = oo.getIndexOfChild(object);
int from = oo.getIndexOfChild(o);
boolean r = oo.move(from, to, true);
if(!r) return;
if(object.isActive()) {
XUndoManager undo = object.getModel().getUndoManager();
undo.addUndoable(new XMoveUndo(p, from, to));
}
}
}