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An Open Source JavaFX PDF Viewer
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2016 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---------------
* MultiViewTransferHandler.java
* ---------------
*/
package org.jpedal.examples.viewer.gui;
import java.awt.datatransfer.Transferable;
import java.beans.PropertyVetoException;
import java.io.File;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import javax.swing.JComponent;
import javax.swing.JDesktopPane;
import javax.swing.JInternalFrame;
import javax.swing.JOptionPane;
import org.jpedal.examples.viewer.Commands;
import org.jpedal.examples.viewer.Values;
import org.jpedal.gui.GUIFactory;
import org.jpedal.utils.LogWriter;
import org.jpedal.utils.Messages;
import org.jpedal.utils.SwingWorker;
public class MultiViewTransferHandler extends BaseTransferHandler {
private int fileCount;
public MultiViewTransferHandler(final Values commonValues, final GUIFactory currentGUI, final Commands currentCommands) {
super(commonValues, currentGUI, currentCommands);
}
@Override
public boolean importData(final JComponent src, final Transferable transferable) {
try {
final Object dragImport = getImport(transferable);
if (dragImport instanceof String) {
final String url = (String) dragImport;
System.out.println(url);
final String testURL = url.toLowerCase();
if (testURL.startsWith("http:/")) {
currentCommands.handleTransferedFile(testURL);
return true;
} else if (testURL.startsWith("file:/")) {
final String[] urls = url.split("file:/");
final List files = new LinkedList();
for (final String file : urls) {
if (!file.isEmpty()) {
final File file2 = new File(new URL("file:/" + file).getFile());
System.out.println(file2);
files.add(file2);
}
}
return openFiles(files);
}
} else if (dragImport instanceof List) {
final List files = (List) dragImport;
return openFiles(files);
}
} catch (final Exception e) {
LogWriter.writeLog("Exception attempting to import data " + e);
}
return false;
}
private boolean openFiles(final List files) {
fileCount = 0;
final List flattenedFiles = getFlattenedFiles(files, new ArrayList());
if (fileCount == commonValues.getMaxMiltiViewers()) {
currentGUI.showMessageDialog("You have choosen to import more files than your current set " +
"maximum (" + commonValues.getMaxMiltiViewers() + "). Only the first " +
commonValues.getMaxMiltiViewers() + " files will be imported.\nYou can change this value " +
"in View | Preferences",
"Maximum number of files reached", JOptionPane.INFORMATION_MESSAGE);
}
final List[] filterdFiles = filterFiles(flattenedFiles);
final List allowedFiles = filterdFiles[0];
final List disAllowedFiles = filterdFiles[1];
final int noOfDisAllowedFiles = disAllowedFiles.size();
final int noOfAllowedFiles = allowedFiles.size();
if(noOfDisAllowedFiles > 0) {
StringBuilder unOpenableFiles = new StringBuilder();
for (final Object disAllowedFile : disAllowedFiles) {
final String file = (String) disAllowedFile;
final String fileName = new File(file).getName();
unOpenableFiles.append(fileName).append('\n');
}
final int result = currentGUI.showConfirmDialog("You have selected " + flattenedFiles.size() +
" files to open. The following file(s) cannot be opened\nas they are not valid PDFs " +
"or images.\n" + unOpenableFiles + "\nWould you like to open the remaining " +
noOfAllowedFiles + " files?", "File Import", JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE);
if (result == JOptionPane.NO_OPTION) {
return false;
}
}
final SwingWorker worker = new SwingWorker() {
@Override
public Object construct() {
for (final Object allowedFile : allowedFiles) {
final String file = (String) allowedFile;
try {
currentCommands.handleTransferedFile(file);
} catch (final Exception e) {
LogWriter.writeLog("Exception e "+e.getMessage());
final int result;
if (allowedFiles.size() == 1) {
currentGUI.showMessageDialog(Messages.getMessage("PdfViewerOpenerror"), commonValues.getSelectedFile(), JOptionPane.ERROR_MESSAGE);
result = JOptionPane.NO_OPTION;
} else {
result = currentGUI.showConfirmDialog(Messages.getMessage("PdfViewerOpenerror") + ". Continue opening remaining files?", commonValues.getSelectedFile(),
JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE);
}
final JInternalFrame[] allFrames = ((JDesktopPane)currentGUI.getMultiViewerFrames()).getAllFrames();
for (final JInternalFrame internalFrame : allFrames) {
if (internalFrame.getTitle().equals(commonValues.getSelectedFile())) {
try {
internalFrame.setClosed(true);
} catch (final PropertyVetoException e1) {
LogWriter.writeLog("Exception "+e1+" attempting getframes");
}
break;
}
}
if (result == JOptionPane.NO_OPTION) {
return null;
}
}
}
return null;
}
};
worker.start();
//
// SwingUtilities.invokeLater(new Runnable() {
// public void run() {
// JInternalFrame[] allFrames = currentGUI.getMultiViewerFrames().getAllFrames();
//
// for (int i = allFrames.length - 1; i >= 0; i--) {
// JInternalFrame pdf = allFrames[i];
//
// pdf.updateUI();
// pdf.repaint();
// try {
// pdf.setSelected(true);
// } catch (PropertyVetoException e) {
// e.printStackTrace();
// }
// }
// currentGUI.getMultiViewerFrames().repaint();
// }
// });
return true;
}
private static List[] filterFiles(final List flattenedFiles) {
final List allowedFiles = new LinkedList();
final List disAllowedFiles = new LinkedList();
for (final String flattenedFile : flattenedFiles) {
final String file = (flattenedFile);
final String testFile = file.toLowerCase();
final boolean isValid = ((testFile.endsWith(".pdf")) || (testFile.endsWith(".fdf")) ||
(testFile.endsWith(".tif")) || (testFile.endsWith(".tiff")) ||
(testFile.endsWith(".png")) || (testFile.endsWith(".jpg")) ||
(testFile.endsWith(".jpeg")));
if (isValid) {
allowedFiles.add(file);
} else {
disAllowedFiles.add(file);
}
}
return new List[] { allowedFiles, disAllowedFiles };
}
private List getFlattenedFiles(final List files, final List flattenedFiles) {
for (final Object file1 : files) {
if (fileCount == commonValues.getMaxMiltiViewers()) {
return flattenedFiles;
}
final File file = (File) file1;
// System.out.println(file);
if (file.isDirectory()) {
getFlattenedFiles(Arrays.asList(file.listFiles()), flattenedFiles);
} else {
flattenedFiles.add(file.getAbsolutePath());
fileCount++;
}
}
return flattenedFiles;
}
// protected void openTransferedFile(String file) {
// String testFile = file.toLowerCase();
//
// boolean isValid = ((testFile.endsWith(".pdf"))
// || (testFile.endsWith(".fdf")) || (testFile.endsWith(".tif"))
// || (testFile.endsWith(".tiff")) || (testFile.endsWith(".png"))
// || (testFile.endsWith(".jpg")) || (testFile.endsWith(".jpeg")));
//
// if (isValid) {
// currentCommands.openTransferedFile(file);
// } else {
// currentGUI.showMessageDialog("You may only import a valid PDF or image");
// }
// }
}