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/*******************************************************************************
* 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.dnd.internal;
import org.eclipse.gef.EditPartViewer;
import org.eclipse.gef.Request;
import org.eclipse.gef.dnd.AbstractTransferDropTargetListener;
import org.eclipse.jst.pagedesigner.dnd.LocalDropRequest;
import org.eclipse.swt.dnd.DND;
import org.eclipse.swt.dnd.DropTargetEvent;
import org.eclipse.swt.dnd.FileTransfer;
/**
* The drop target listener for DnD from Windows explorer.
*
* @author mengbo
* @version 1.5
*/
public class ResouceDropTargetListener extends
AbstractTransferDropTargetListener {
public ResouceDropTargetListener(EditPartViewer viewer) {
super(viewer, FileTransfer.getInstance());
// TODO Auto-generated constructor stub
}
/*
* (non-Javadoc)
*
* @see org.eclipse.gef.dnd.AbstractTransferDropTargetListener#createTargetRequest()
*/
protected Request createTargetRequest() {
LocalDropRequest request = new LocalDropRequest();
request.setLocation(getDropLocation());
request.setLocalObject(getCurrentLocalObject());
return request;
}
public Object getCurrentLocalObject() {
Object result = null;
try {
Object data = ((FileTransfer) getTransfer())
.nativeToJava(getCurrentEvent().currentDataType);
if (data instanceof String[]) {
result = ((String[]) data)[0];
}
} catch (Exception e) {
// Don't know the tag type.
}
return result;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.gef.dnd.AbstractTransferDropTargetListener#updateTargetRequest()
*/
protected void updateTargetRequest() {
LocalDropRequest dropRequest = (LocalDropRequest) getTargetRequest();
dropRequest.setLocation(getDropLocation());
dropRequest.setLocalObject(getCurrentLocalObject());
}
/*
* (non-Javadoc)
*
* @see org.eclipse.gef.dnd.AbstractTransferDropTargetListener#setCurrentEvent(org.eclipse.swt.dnd.DropTargetEvent)
*/
public void setCurrentEvent(DropTargetEvent currentEvent) {
super.setCurrentEvent(currentEvent);
if (currentEvent != null) {
if (currentEvent.detail != DND.DROP_NONE) {
currentEvent.detail = DND.DROP_COPY;
}
}
}
/*
* (non-Javadoc)
*
* @see org.eclipse.swt.dnd.DropTargetListener#dragOperationChanged(org.eclipse.swt.dnd.DropTargetEvent)
*/
public void dragOperationChanged(DropTargetEvent event) {
// switch the insert or update
if ((event.detail & (DND.DROP_COPY)) != 0) {
LocalDropEditPolicy.setCheckUpdate(false);
} else {
LocalDropEditPolicy.setCheckUpdate(true);
}
super.dragOperationChanged(event);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.swt.dnd.DropTargetListener#drop(org.eclipse.swt.dnd.DropTargetEvent)
*/
public void drop(DropTargetEvent event) {
getViewer().getControl().setFocus();
super.drop(event);
LocalDropEditPolicy.setCheckUpdate(true);
}
}
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