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/*******************************************************************************
* Copyright (c) 2006, 2008 Wind River Systems, Inc. and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Anton Leherbauer (Wind River Systems) - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.ui.navigator;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.cdt.core.model.ICElement;
import org.eclipse.cdt.core.model.ISourceReference;
import org.eclipse.cdt.core.model.ITranslationUnit;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jface.util.LocalSelectionTransfer;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.dnd.DragSourceEvent;
import org.eclipse.swt.dnd.FileTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.ui.navigator.CommonDragAdapterAssistant;
/**
* A Common Navigator drag assistant supporting <code>LocalSelectionTransfer</code> of
* <code>ICElement</code>s being also <code>ISourceReference</code>s and
* <code>FileTransfer</code> for external translation units.
*
* @see org.eclipse.cdt.internal.ui.cview.SelectionTransferDragAdapter
*/
public class CNavigatorDragAdapterAssistant extends CommonDragAdapterAssistant {
private static final Transfer[] TRANSFERS = new Transfer[] { LocalSelectionTransfer.getTransfer(),
FileTransfer.getInstance() };
/*
* @see org.eclipse.ui.navigator.CommonDragAdapterAssistant#getSupportedTransferTypes()
*/
@Override
public Transfer[] getSupportedTransferTypes() {
return TRANSFERS;
}
/*
* @see org.eclipse.ui.navigator.CommonDragAdapterAssistant#setDragData(org.eclipse.swt.dnd.DragSourceEvent, org.eclipse.jface.viewers.IStructuredSelection)
*/
@Override
public boolean setDragData(DragSourceEvent event, IStructuredSelection selection) {
if (selection != null) {
if (LocalSelectionTransfer.getTransfer().isSupportedType(event.dataType)) {
boolean applicable = false;
for (Iterator<?> iter = (selection).iterator(); iter.hasNext();) {
Object element = iter.next();
if (element instanceof ICElement) {
if (element instanceof ITranslationUnit) {
continue;
}
if (!(element instanceof ISourceReference)) {
return false;
}
applicable = true;
}
}
if (applicable) {
event.data = selection;
return true;
}
} else if (FileTransfer.getInstance().isSupportedType(event.dataType)) {
List<String> files = new ArrayList<>();
for (Iterator<?> iter = (selection).iterator(); iter.hasNext();) {
Object element = iter.next();
if (element instanceof ITranslationUnit) {
ITranslationUnit tu = (ITranslationUnit) element;
IPath location = tu.getLocation();
if (location != null) {
files.add(location.toOSString());
}
}
}
if (!files.isEmpty()) {
event.data = files.toArray(new String[files.size()]);
return true;
}
}
}
return false;
}
}
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