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An Open Source JavaFX PDF Viewer
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/*
 * ===========================================
 * Java Pdf Extraction Decoding Access Library
 * ===========================================
 *
 * Project Info:  http://www.idrsolutions.com
 * Help section for developers at http://www.idrsolutions.com/support/
 *
 * (C) Copyright 1997-2017 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


 *
 * ---------------
 * RecentDocuments.java
 * ---------------
 */
package org.jpedal.examples.viewer;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Stack;
import java.util.StringTokenizer;
import javax.swing.JMenuItem;
import org.jpedal.examples.viewer.commands.SaveFile;
import org.jpedal.examples.viewer.utils.Printer;
import org.jpedal.examples.viewer.utils.PropertiesFile;
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;


public class RecentDocuments implements RecentDocumentsFactory {
	
	//int noOfRecentDocs;
	//PropertiesFile properties;
	
    public final int noOfRecentDocs;
    
	private final Stack previousFiles = new Stack();
	private final Stack nextFiles = new Stack();

    public final JMenuItem[] recentDocuments;
   
    
	public RecentDocuments(final int noOfRecentDocs) {
		
        this.noOfRecentDocs = noOfRecentDocs;
        recentDocuments = new JMenuItem[noOfRecentDocs];
		//this.noOfRecentDocs=noOfRecentDocs;
		//this.properties=properties;
		
	}

	static String getShortenedFileName(final String fileNameToAdd) {
		final int maxChars = 30;
		
		if (fileNameToAdd.length() <= maxChars) {
            return fileNameToAdd;
        }
		
		final StringTokenizer st = new StringTokenizer(fileNameToAdd,"\\/");

        final int noOfTokens = st.countTokens();

        //allow for /filename.pdf
        if (noOfTokens==1) {
            return fileNameToAdd.substring(0, maxChars);
        }

        final String[] arrayedFile = new String[noOfTokens];
		for (int i = 0; i < noOfTokens; i++) {
            arrayedFile[i] = st.nextToken();
        }

        final String filePathBody = fileNameToAdd.substring(arrayedFile[0].length(),
				fileNameToAdd.length() - arrayedFile[noOfTokens - 1].length());
		
		final StringBuilder sb = new StringBuilder(filePathBody);
		
		int start,end;
		for (int i = noOfTokens - 2; i > 0; i--) {
			
			start = sb.lastIndexOf(arrayedFile[i]);			
			end = start + arrayedFile[i].length();
			sb.replace(start, end, "...");

			if (sb.length() <= maxChars) {
                break;
            }
		}
		
		return arrayedFile[0] + sb + arrayedFile[noOfTokens - 1];
	}

	@Override
    public String getPreviousDocument() {
		
		String fileToOpen =null;
		
		if(previousFiles.size() > 1){
			nextFiles.push(previousFiles.pop());
			fileToOpen = previousFiles.pop();
		}
		
		return fileToOpen;
	}
	
    @Override
	public String getNextDocument() {
		
		String fileToOpen =null;
		
		if(!nextFiles.isEmpty()) {
            fileToOpen = 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 0) {
            final NodeList allRecentDocs = ((Element) nl.item(0)).getElementsByTagName("*");
            
            for(int i=0;i