//
// ShortcutTransferHandler.java
//
/*
LOCI Plugins for ImageJ: a collection of ImageJ plugins including the
Bio-Formats Importer, Bio-Formats Exporter, Bio-Formats Macro Extensions,
Data Browser and Stack Slicer. Copyright (C) 2005-@year@ Melissa Linkert,
Curtis Rueden and Christopher Peterson.
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package loci.plugins.shortcut;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.File;
import java.io.IOException;
import java.net.URLDecoder;
import java.util.Arrays;
import java.util.List;
import javax.swing.JComponent;
import javax.swing.SwingUtilities;
import javax.swing.TransferHandler;
/**
* Drag and drop transfer handler for LOCI Plugins Shortcut Window.
*
* <dl><dt><b>Source code:</b></dt>
* <dd><a href="http://trac.openmicroscopy.org.uk/ome/browser/bioformats.git/components/loci-plugins/src/loci/plugins/shortcut/ShortcutTransferHandler.java">Trac</a>,
* <a href="http://git.openmicroscopy.org/?p=bioformats.git;a=blob;f=components/loci-plugins/src/loci/plugins/shortcut/ShortcutTransferHandler.java;hb=HEAD">Gitweb</a></dd></dl>
*
* @author Curtis Rueden ctrueden at wisc.edu
*/
public class ShortcutTransferHandler extends TransferHandler {
// -- Fields --
/** Associated shortcut panel. */
protected ShortcutPanel shortcutPanel;
// -- Constructor --
/** Constructs a new shortcut panel drag and drop transfer handler. */
public ShortcutTransferHandler(ShortcutPanel shortcutPanel) {
this.shortcutPanel = shortcutPanel;
}
// -- TransferHandler API methods --
public boolean canImport(JComponent comp, DataFlavor[] transferFlavors) {
return true;
}
public boolean importData(JComponent comp, Transferable t) {
try {
// search for compatible data flavors (lists, files and strings)
DataFlavor[] flavors = t.getTransferDataFlavors();
int fileIndex = -1, stringIndex = -1, listIndex = -1;
for (int i=0; i<flavors.length; i++) {
if (fileIndex >= 0 && stringIndex >= 0 && listIndex >= 0) break;
Class<?> c = flavors[i].getRepresentationClass();
if (fileIndex < 0 && c == File.class) fileIndex = i;
if (stringIndex < 0 && c == String.class) stringIndex = i;
if (listIndex < 0 && c == List.class) listIndex = i;
}
// convert data into list of objects
List<?> list = null;
if (listIndex >= 0) {
list = (List<?>) t.getTransferData(flavors[listIndex]);
}
else if (fileIndex >= 0) {
File f = (File) t.getTransferData(flavors[fileIndex]);
list = Arrays.asList(f);
}
else if (stringIndex >= 0) {
String s = (String) t.getTransferData(flavors[stringIndex]);
list = Arrays.asList(s.split("[ \t\n\r\f]"));
//StringTokenizer st = new StringTokenizer(s);
//while (st.hasMoreTokens()) list.add(st.nextToken());
}
if (list == null) {
// no compatible data flavors found
return false;
}
// process each item on the list
final String[] ids = new String[list.size()];
for (int i=0; i<ids.length; i++) {
Object item = list.get(i);
String id = null;
if (item instanceof File) {
File f = (File) item;
id = f.getAbsolutePath();
}
else if (item instanceof String) {
id = (String) item;
}
if (id == null) {
System.err.println("Warning: ignoring item #" + i + ": " + item);
}
else {
// convert "file://" URLs into path names
ids[i] = id.replaceAll("^file:/*", "/");
if (!new File(ids[i]).exists()) {
ids[i] = URLDecoder.decode(ids[i], "UTF-8");
}
}
}
// open each item
SwingUtilities.invokeLater(new Runnable() {
public void run() {
for (int i=0; i<ids.length; i++) shortcutPanel.open(ids[i]);
}
});
}
catch (UnsupportedFlavorException e) {
e.printStackTrace();
// dump list of supported flavors, for debugging
DataFlavor[] df = t.getTransferDataFlavors();
System.err.println("Supported flavors:");
for (int i=0; i<df.length; i++) {
System.err.println("\t#" + i + ": " + df[i]);
}
ij.IJ.error(e.toString());
return false;
}
catch (IOException e) {
e.printStackTrace();
ij.IJ.error(e.toString());
return false;
}
return true;
}
}