Package com.lowagie.tools.plugins

Source Code of com.lowagie.tools.plugins.SelectedPages

/*
* $Id: SelectedPages.java 45 2007-05-15 22:02:53Z chammer $
* Copyright (c) 2005-2007 Bruno Lowagie, Carsten Hammer
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/

/*
* This class was originally published under the MPL by Bruno Lowagie
* and Carsten Hammer.
* It was a part of iText, a Java-PDF library. You can now use it under
* the MIT License; for backward compatibility you can also use it under
* the MPL version 1.1: http://www.mozilla.org/MPL/
* A copy of the MPL license is bundled with the source code FYI.
*/

package com.lowagie.tools.plugins;

import java.io.File;
import java.io.FileOutputStream;

import javax.swing.JInternalFrame;

import com.lowagie.text.Document;
import com.lowagie.text.pdf.PRAcroForm;
import com.lowagie.text.pdf.PdfCopy;
import com.lowagie.text.pdf.PdfImportedPage;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.tools.AbstractTool;
import com.lowagie.tools.arguments.FileArgument;
import com.lowagie.tools.arguments.StringArgument;
import com.lowagie.tools.arguments.filters.PdfFilter;

/**
* This tool lets you select pages from an existing PDF and copy them into a new PDF.
*/
public class SelectedPages extends AbstractTool {

  static {
    addVersion("$Id: SelectedPages.java 45 2007-05-15 22:02:53Z chammer $");
  }
  /**
   * Constructs a SelectedPages object.
   */
  public SelectedPages() {
    menuoptions = MENU_EXECUTE | MENU_EXECUTE_SHOW;
    arguments.add(new FileArgument(this, "srcfile", "The file you want to split", false, new PdfFilter()));
    arguments.add(new FileArgument(this, "destfile", "The file to which the first part of the original PDF has to be written", true, new PdfFilter()));
    arguments.add(new StringArgument(this, "selection", "A selection of pages (see Help for more info)", String.class.getName()));
  }

  /**
   * @see com.lowagie.tools.AbstractTool#createFrame()
   */
  protected void createFrame() {
    internalFrame = new JInternalFrame("SelectedPages", true, false, true);
    internalFrame.setSize(300, 80);
    internalFrame.setJMenuBar(getMenubar());
    System.out.println("=== SelectedPages OPENED ===");
  }

  /**
   * @see com.lowagie.tools.AbstractTool#execute()
   */
  public void execute() {
        try {
      if (getValue("srcfile") == null) throw new InstantiationException("You need to choose a sourcefile");
      File src = (File)getValue("srcfile");
          if (getValue("destfile") == null) throw new InstantiationException("You need to choose a destination file for the first part of the PDF");
          File dest = (File)getValue("destfile");
          String selection = (String)getValue("selection");

          // we create a reader for a certain document
      PdfReader reader = new PdfReader(src.getAbsolutePath());
      System.out.println("The original file had " + reader.getNumberOfPages() + " pages.");
      reader.selectPages(selection);
      int pages = reader.getNumberOfPages();
      System.err.println("The new file has " + pages + " pages.");
      Document document = new Document(reader.getPageSizeWithRotation(1));
      PdfCopy copy = new PdfCopy(document, new FileOutputStream(dest.getAbsolutePath()));
      document.open();
            PdfImportedPage page;
            for (int i = 0; i < pages; ) {
                ++i;
                System.out.println("Processed page " + i);
                page = copy.getImportedPage(reader, i);
                copy.addPage(page);
            }
            PRAcroForm form = reader.getAcroForm();
      if (form != null)
                copy.copyAcroForm(reader);
      document.close();
        }
        catch(Exception e) {
            e.printStackTrace();
        }
    }

    /**
     *
     * @see com.lowagie.tools.AbstractTool#valueHasChanged(com.lowagie.tools.arguments.StringArgument)
     * @param arg StringArgument
     */
    public void valueHasChanged(StringArgument arg) {
    if (internalFrame == null) {
      // if the internal frame is null, the tool was called from the commandline
      return;
    }
    // represent the changes of the argument in the internal frame
  }


    /**
     * Generates a PDF file with selected pages from an existing PDF.
     *
     * @param args String[]
     */
    public static void main(String[] args) {
      SelectedPages tool = new SelectedPages();
      if (args.length < 4) {
        System.err.println(tool.getUsage());
      }
      tool.setMainArguments(args);
        tool.execute();
  }

    /**
     *
     * @see com.lowagie.tools.AbstractTool#getDestPathPDF()
     * @throws InstantiationException
     * @return File
     */
    protected File getDestPathPDF() throws InstantiationException {
    return (File)getValue("destfile");
  }
}
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