/*
This file is part of RouteConverter.
RouteConverter is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
RouteConverter is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with RouteConverter; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Copyright (C) 2007 Christian Pesch. All Rights Reserved.
*/
package slash.navigation.converter.gui.dnd;
import slash.common.io.FileFileFilter;
import slash.navigation.converter.gui.RouteConverter;
import javax.swing.*;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import static java.awt.datatransfer.DataFlavor.javaFileListFlavor;
import static java.awt.datatransfer.DataFlavor.stringFlavor;
import static java.util.Arrays.asList;
import static slash.common.io.Files.toUrls;
import static slash.navigation.converter.gui.dnd.DnDHelper.extractUrl;
/**
* Reacts on drop operations on a panel to open a file or addChild it to the catalog.
*
* @author Christian Pesch
*/
public class PanelDropHandler extends TransferHandler {
private List<File> toFilesOnly(List<File> files) {
List<File> result = new ArrayList<File>();
for (File file : files) {
if (file.isFile())
result.add(file);
else if (file.isDirectory()) {
File[] list = file.listFiles(new FileFileFilter());
if (list != null)
result.addAll(asList(list));
}
}
return result;
}
private void openOrAdd(List<File> files) {
RouteConverter r = RouteConverter.getInstance();
if (r.isConvertPanelSelected()) {
List<File> onlyFiles = toFilesOnly(files);
r.openPositionList(toUrls(onlyFiles.toArray(new File[onlyFiles.size()])));
} else if (r.isBrowsePanelSelected())
r.addFilesToCatalog(files);
}
private void openOrAdd(String string) {
RouteConverter r = RouteConverter.getInstance();
if (r.isConvertPanelSelected()) {
String url = extractUrl(string);
r.openPositionList(toUrls(url));
} else if (r.isBrowsePanelSelected()) {
r.addUrlToCatalog(string);
}
}
public boolean canImport(TransferSupport support) {
return support.isDataFlavorSupported(javaFileListFlavor) ||
support.isDataFlavorSupported(stringFlavor);
}
@SuppressWarnings("unchecked")
public boolean importData(TransferSupport support) {
Transferable transferable = support.getTransferable();
try {
if (support.isDataFlavorSupported(javaFileListFlavor)) {
Object data = transferable.getTransferData(javaFileListFlavor);
if (data != null) {
List<File> files = (List<File>) data;
openOrAdd(files);
return true;
}
}
if (support.isDataFlavorSupported(stringFlavor)) {
Object data = transferable.getTransferData(stringFlavor);
if (data != null) {
String url = (String) data;
openOrAdd(url);
return true;
}
}
} catch (UnsupportedFlavorException e) {
// intentionally left empty
} catch (IOException e) {
// intentionally left empty
}
return false;
}
}