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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 1997-2015 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
*
* ---------------
* JavaFXRecentDocuments.java
* ---------------
*/
package org.jpedal.examples.viewer;
import java.util.Stack;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.control.MenuItem;
import org.jpedal.PdfDecoderInt;
import org.jpedal.examples.viewer.gui.generic.GUISearchWindow;
import org.jpedal.display.GUIThumbnailPanel;
import org.jpedal.examples.viewer.utils.*;
import org.jpedal.gui.GUIFactory;
import org.jpedal.utils.Messages;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* This Class Controls the Navigation of the most recent documents loaded in the
* Viewer, it can be seen in action from the File menu.
*/
public class JavaFXRecentDocuments implements RecentDocumentsFactory {
final int noOfRecentDocs;
private final Stack previousFiles = new Stack();
private final Stack nextFiles = new Stack();
public final MenuItem[] recentDocuments;
public JavaFXRecentDocuments(final int noOfRecentDocs) {
this.noOfRecentDocs = noOfRecentDocs;
recentDocuments = new MenuItem[noOfRecentDocs];
}
@Override
public String getPreviousDocument() {
String fileToOpen = null;
if (previousFiles.size() > 1) {
nextFiles.push(previousFiles.pop());
fileToOpen = (String) previousFiles.pop();
}
return fileToOpen;
}
@Override
public String getNextDocument() {
String fileToOpen = null;
if (!nextFiles.isEmpty()) {
fileToOpen = (String) nextFiles.pop();
}
return fileToOpen;
}
@Override
public void addToFileList(final String selectedFile) {
previousFiles.push(selectedFile);
}
@Override
public void enableRecentDocuments(final boolean enable) {
if (recentDocuments == null) {
return;
}
for (int i = 0; i < recentDocuments.length; i++) {
if (recentDocuments[i] != null && !recentDocuments[i].getText().equals(i + 1 + ": ")) {
recentDocuments[i].setVisible(enable);
recentDocuments[i].setDisable(!enable);
}
}
}
@Override
public void updateRecentDocuments(final String[] recentDocs) {
if (recentDocs == null) {
return;
}
for (int i = 0; i < recentDocs.length; i++) {
if (recentDocs[i] != null) {
final String shortenedFileName = RecentDocuments.getShortenedFileName(recentDocs[i]);
if (recentDocuments[i] == null) {
recentDocuments[i] = new MenuItem();
}
recentDocuments[i].setText(i + 1 + ": " + shortenedFileName);
if (recentDocuments[i].getText().equals(i + 1 + ": ")) {
recentDocuments[i].setVisible(false);
} else {
recentDocuments[i].setVisible(true);
}
recentDocuments[i].setId(recentDocs[i]);
}
}
}
@Override
public void clearRecentDocuments(final PropertiesFile properties) {
final NodeList nl = properties.getDoc().getElementsByTagName("recentfiles");
if (nl != null && nl.getLength() > 0) {
final NodeList allRecentDocs = ((Element) nl.item(0)).getElementsByTagName("*");
for (int i = 0; i < allRecentDocs.getLength(); i++) {
final Node item = allRecentDocs.item(i);
nl.item(0).removeChild(item);
}
}
for (int i = 0; i < noOfRecentDocs; i++) {
recentDocuments[i].setText(i + 1 + ": ");
recentDocuments[i].setVisible(false);
}
}
@Override
public void createMenuItems(final String fileNameToAdd, final int position, final GUIFactory currentGUI, final Values commonValues, final PdfDecoderInt decode_pdf, final PropertiesFile properties, final GUIThumbnailPanel thumbnails, final GUISearchWindow searchFrame) {
final String shortenedFileName = RecentDocuments.getShortenedFileName(fileNameToAdd);
recentDocuments[position] = new MenuItem(position + 1 + ": " + shortenedFileName);
if (recentDocuments[position].getText().equals(position + 1 + ": ")) {
recentDocuments[position].setVisible(false);
}
recentDocuments[position].setId(fileNameToAdd);
recentDocuments[position].setOnAction(new EventHandler() {
@Override
public void handle(final ActionEvent event) {
//
if (Values.isProcessing()) {
currentGUI.showMessageDialog(Messages.getMessage("PdfViewerDecodeWait.message"));
} else {
/**
* warn user on forms
*/
System.out.println("SaveForm in JavaFXCommands recentDocumentsOption is not yet implemented for FX");
//SaveForm.handleUnsaveForms(currentGUI, commonValues, decode_pdf);
final MenuItem item = (MenuItem) event.getSource();
final String fileName = item.getId();
if (!fileName.isEmpty()) {
if(!Viewer.closeCalled){
currentGUI.open(fileName);
}else {
throw new RuntimeException("No resource to open document, call to close() disposes viewer resources");
}
}
}
}
});
currentGUI.getMenuItems().addToMenu(recentDocuments[position], Commands.FILEMENU);
}
}