package ij.plugin;
import ij.*;
import ij.gui.YesNoCancelDialog;
import ij.io.*;
import java.io.*;
import java.awt.datatransfer.*;
import java.awt.dnd.*;
import java.util.List;
import java.util.Iterator;
import java.util.ArrayList;
/** This class opens images, roi's, luts and text files dragged and dropped on the "ImageJ" window.
It requires Java 1.3.1 or later. Based on the Draw_And_Drop plugin by Eric Kischell (keesh@ieee.org).
10 November 2006: Albert Cardona added Linux support and an
option to open all images in a dragged folder as a stack.
*/
public class DragAndDrop implements PlugIn, DropTargetListener, Runnable {
private Iterator iterator;
public void run(String arg) {
ImageJ ij = IJ.getInstance();
ij.setDropTarget(null);
DropTarget dropTarget = new DropTarget(ij, this);
}
public void drop(DropTargetDropEvent dtde) {
dtde.acceptDrop(DnDConstants.ACTION_COPY);
try {
Transferable t = dtde.getTransferable();
iterator = null;
if (t.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
Object data = t.getTransferData(DataFlavor.javaFileListFlavor);
iterator = ((List)data).iterator();
} else {
// find a String path
DataFlavor[] flavors = t.getTransferDataFlavors();
for (int i=0; i<flavors.length; i++) {
if (!flavors[i].getRepresentationClass().equals(String.class)) continue;
Object ob = t.getTransferData(flavors[i]);
if (!(ob instanceof String)) continue;
String s = ob.toString().trim();
BufferedReader br = new BufferedReader(new StringReader(s));
String tmp;
ArrayList list = new ArrayList();
while (null != (tmp = br.readLine())) {
tmp = java.net.URLDecoder.decode(tmp, "UTF-8");
if (tmp.startsWith("file://")) {
tmp = tmp.substring(7);
}
list.add(new File(tmp));
}
this.iterator = list.iterator();
break;
}
}
if (null != iterator) {
Thread thread = new Thread(this, "DrawAndDrop");
thread.setPriority(Math.max(thread.getPriority()-1, Thread.MIN_PRIORITY));
thread.start();
}
}
catch(Exception e) {
dtde.dropComplete(false);
return;
}
dtde.dropComplete(true);
}
public void dragEnter(DropTargetDragEvent dtde) {
dtde.acceptDrag(DnDConstants.ACTION_COPY);
}
public void dragOver(DropTargetDragEvent e) {}
public void dragExit(DropTargetEvent e) {}
public void dropActionChanged(DropTargetDragEvent e) {}
public void run() {
Iterator iterator = this.iterator;
while(iterator.hasNext()) {
File file = (File)iterator.next();
openFile(file);
}
}
/** Open a file. If it's a directory, ask to open all images as a sequence in a stack or individually. */
private void openFile(File f) {
try {
if (null == f) return;
String tmp = f.getCanonicalPath();
if (f.exists()) {
if (f.isDirectory()) {
String[] names = f.list();
YesNoCancelDialog yn = new YesNoCancelDialog(IJ.getInstance(), "Open folder?", "Open all "+names.length+" images in \"" + f.getName() + "\" as a stack?");
if (yn.yesPressed()) {
IJ.run("Image Sequence...", "open=[" + tmp + "/]");
} else if (!yn.cancelPressed()) {
for (int k=0; k<names.length; k++) {
IJ.redirectErrorMessages();
if (!names[k].startsWith("."))
(new Opener()).open(tmp + "/" + names[k]);
}
}
} else {
(new Opener()).openAndAddToRecent(tmp);
OpenDialog.setLastDirectory(f.getParent()+File.separator);
OpenDialog.setLastName(f.getName());
}
} else {
IJ.log("File not found: " + tmp);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}