/*
* @(#)MPOImageSplitter.java
*
* Copyright (c) 2011-2012 Werner Randelshofer, Goldau, Switzerland.
* All rights reserved.
*
* You may not use, copy or modify this file, except in compliance with the
* license agreement you entered into with Werner Randelshofer.
* For details see accompanying license terms.
*/
package org.monte.media.mpo;
import org.monte.media.gui.Worker;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.dnd.DnDConstants;
import java.awt.dnd.DropTarget;
import java.awt.dnd.DropTargetDragEvent;
import java.awt.dnd.DropTargetDropEvent;
import java.awt.dnd.DropTargetEvent;
import java.awt.dnd.DropTargetListener;
import java.io.File;
import java.io.IOException;
import java.util.List;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
/**
* MPOImageSplitter.
*
* @author Werner Randelshofer
* @version $Id: MPOImageSplitter.java 299 2013-01-03 07:40:18Z werner $
*/
public class MPOImageSplitter extends javax.swing.JPanel {
private class Handler implements DropTargetListener {
/**
* Called when a drag operation has
* encountered the <code>DropTarget</code>.
* <P>
* @param dtde the <code>DropTargetDragEvent</code>
*/
@Override
public void dragEnter(DropTargetDragEvent event) {
if (event.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
event.acceptDrag(DnDConstants.ACTION_COPY);
} else {
event.rejectDrag();
}
}
/**
* The drag operation has departed
* the <code>DropTarget</code> without dropping.
* <P>
* @param dte the <code>DropTargetEvent</code>
*/
@Override
public void dragExit(DropTargetEvent event) {
// Nothing to do
}
/**
* Called when a drag operation is ongoing
* on the <code>DropTarget</code>.
* <P>
* @param dtde the <code>DropTargetDragEvent</code>
*/
@Override
public void dragOver(DropTargetDragEvent event) {
if (event.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
event.acceptDrag(DnDConstants.ACTION_COPY);
} else {
event.rejectDrag();
}
}
/**
* The drag operation has terminated
* with a drop on this <code>DropTarget</code>.
* This method is responsible for undertaking
* the transfer of the data associated with the
* gesture. The <code>DropTargetDropEvent</code>
* provides a means to obtain a <code>Transferable</code>
* object that represents the data object(s) to
* be transfered.<P>
* From this method, the <code>DropTargetListener</code>
* shall accept or reject the drop via the
* acceptDrop(int dropAction) or rejectDrop() methods of the
* <code>DropTargetDropEvent</code> parameter.
* <P>
* Subsequent to acceptDrop(), but not before,
* <code>DropTargetDropEvent</code>'s getTransferable()
* method may be invoked, and data transfer may be
* performed via the returned <code>Transferable</code>'s
* getTransferData() method.
* <P>
* At the completion of a drop, an implementation
* of this method is required to signal the success/failure
* of the drop by passing an appropriate
* <code>boolean</code> to the <code>DropTargetDropEvent</code>'s
* dropComplete(boolean success) method.
* <P>
* Note: The actual processing of the data transfer is not
* required to finish before this method returns. It may be
* deferred until later.
* <P>
* @param dtde the <code>DropTargetDropEvent</code>
*/
@Override
@SuppressWarnings("unchecked")
public void drop(DropTargetDropEvent event) {
if (event.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
event.acceptDrop(DnDConstants.ACTION_COPY);
try {
List<File> files = (List<File>) event.getTransferable().getTransferData(DataFlavor.javaFileListFlavor);
splitMPOFiles(files);
} catch (IOException e) {
JOptionPane.showConfirmDialog(
MPOImageSplitter.this,
"Could not access the dropped data.",
"MPOImageSplitter: Drop Failed",
JOptionPane.DEFAULT_OPTION, JOptionPane.INFORMATION_MESSAGE);
} catch (UnsupportedFlavorException e) {
JOptionPane.showConfirmDialog(
MPOImageSplitter.this,
"Unsupported data flavor.",
"MPOImageSplitter: Drop Failed",
JOptionPane.DEFAULT_OPTION, JOptionPane.INFORMATION_MESSAGE);
}
} else {
event.rejectDrop();
}
}
/**
* Called if the user has modified
* the current drop gesture.
* <P>
* @param dtde the <code>DropTargetDragEvent</code>
*/
@Override
public void dropActionChanged(DropTargetDragEvent event) {
// Nothing to do
}
}
private Handler handler = new Handler();
/** Creates new form MPOImageSplitter */
public MPOImageSplitter() {
initComponents();
new DropTarget(this, handler);
new DropTarget(label, handler);
}
public void splitMPOFiles(final List<File> files) {
label.setEnabled(false);
new Worker() {
@Override
protected Object construct() throws Exception {
for (File f : files) {
MPOFiles.splitMPOFile(f);
}
return null;
}
@Override
protected void finished() {
label.setEnabled(true);
}
}.start();
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
private void initComponents() {
label = new javax.swing.JLabel();
setLayout(new java.awt.BorderLayout());
label.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
label.setText("Drop MPO file here.");
add(label, java.awt.BorderLayout.CENTER);
}// </editor-fold>//GEN-END:initComponents
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
JFrame f = new JFrame("MPO Image Splitter");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(new MPOImageSplitter());
f.setSize(200, 200);
f.setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JLabel label;
// End of variables declaration//GEN-END:variables
}