pdfsavedialog.java

Java的Web报表库

/**
 * ========================================
 * JFreeReport : a free Java report library
 * ========================================
 *
 * Project Info:  http://www.jfree.org/jfreereport/index.html
 * Project Lead:  Thomas Morgner;
 *
 * (C) Copyright 2000-2003, by Simba Management Limited and Contributors.
 *
 * 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.
 *
 * ------------------
 * PDFSaveDialog.java
 * ------------------
 * (C)opyright 2002, 2003, by Thomas Morgner and Contributors.
 *
 * Original Author:  Thomas Morgner;
 * Contributor(s):   David Gilbert (for Simba Management Limited);
 *
 * $Id: PDFSaveDialog.java,v 1.38.2.4 2003/08/24 14:18:11 taqua Exp $
 *
 * Changes
 * --------
 * 26-Aug-2002 : Initial version
 * 29-Aug-2002 : Downport to JDK 1.2.2
 * 31-Aug-2002 : Documentation
 * 01-Sep-2002 : Printing security was inaccurate; bug (exception in JOptionPane) when file exists
 *               More documentation
 * 10-Dec-2002 : Minor Javadoc changes (DG);
 *
 */

package com.jrefinery.report.preview;

import java.awt.Dialog;
import java.awt.Frame;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.print.PageFormat;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.text.MessageFormat;
import java.util.ResourceBundle;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
import javax.swing.KeyStroke;

import com.jrefinery.report.JFreeReport;
import com.jrefinery.report.targets.pageable.PageableReportProcessor;
import com.jrefinery.report.targets.pageable.output.PDFOutputTarget;
import com.jrefinery.report.util.ActionButton;
import com.jrefinery.report.util.ExceptionDialog;
import com.jrefinery.report.util.FilesystemFilter;
import com.jrefinery.report.util.ReportConfiguration;
import com.jrefinery.report.util.Log;

/**
 * A dialog that is used to perform the printing of a report into a PDF file. It is primarily
 * used to edit the properties of the {@link PDFOutputTarget} before the target is used to print
 * the report.
 * <p>
 * The main method to call the dialog is PDFSaveDialog.savePDF(). Given a report and a pageformat,
 * the dialog is shown and if the user approved the dialog, the pdf is saved using the settings
 * made in the dialog.
 *
 * @author Thomas Morgner
 */
public class PDFSaveDialog extends JDialog
{
  /** Useful constant. */
  private static final int CBMODEL_NOPRINTING = 0;

  /** Useful constant. */
  private static final int CBMODEL_DEGRADED = 1;

  /** Useful constant. */
  private static final int CBMODEL_FULL = 2;

  /**
   * Internal action class to enable/disable the Security-Settings panel. Without encryption a
   * pdf file cannot have any security settings enabled.
   */
  private class ActionSecuritySelection extends AbstractAction
  {
    /**
     * Default constructor.
     */
    public ActionSecuritySelection()
    {
    }

    /**
     * Receives notification that the action has occurred.
     *
     * @param e  the action event.
     */
    public void actionPerformed(final ActionEvent e)
    {
      updateSecurityPanelEnabled();
    }
  }

  /**
   * Internal action class to confirm the dialog and to validate the input.
   */
  private class ActionConfirm extends AbstractAction
  {
    /**
     * Default constructor.
     */
    public ActionConfirm()
    {
      putValue(Action.NAME, getResources().getString("pdfsavedialog.confirm"));
    }

    /**
     * Receives notification that the action has occurred.
     *
     * @param e  the action event.
     */
    public void actionPerformed(final ActionEvent e)
    {
      if (performValidate())
      {
        setConfirmed(true);
        setVisible(false);
      }
    }
  }

  /**
   * Internal action class to cancel the report processing.
   */
  private class ActionCancel extends AbstractAction
  {
    /**
     * Default constructor.
     */
    public ActionCancel()
    {
      putValue(Action.NAME, getResources().getString("pdfsavedialog.cancel"));
    }

    /**
     * Receives notification that the action has occurred.
     *
     * @param e  the action event.
     */
    public void actionPerformed(final ActionEvent e)
    {
      setConfirmed(false);
      setVisible(false);
    }
  }

  /**
   * Internal action class to select a target file.
   */
  private class ActionSelectFile extends AbstractAction
  {
    /**
     * Default constructor.
     */
    public ActionSelectFile()
    {
      putValue(Action.NAME, getResources().getString("pdfsavedialog.selectFile"));
    }

    /**
     * Receives notification that the action has occurred.
     *
     * @param e  the action event.
     */
    public void actionPerformed(final ActionEvent e)
    {
      performSelectFile();
    }
  }

  /** Confirm action. */
  private Action actionConfirm;

  /** Cancel action. */
  private Action actionCancel;

  /** Security selection action. */
  private Action actionSecuritySelection;

  /** Select file action. */
  private Action actionSelectFile;

  /** Filename text field. */
  private JTextField txFilename;

  /** Author text field. */
  private JTextField txAuthor;

  /** Title text field. */
  private JTextField txTitle;

  /** Security (none) radio button. */
  private JRadioButton rbSecurityNone;

  /** Security (40 bit) radio button. */
  private JRadioButton rbSecurity40Bit;

  /** Security (128 bit) radio button. */
  private JRadioButton rbSecurity128Bit;

  /** User password text field. */
  private JTextField txUserPassword;

  /** Owner password text field. */
  private JTextField txOwnerPassword;

  /** Confirm user password text field. */
  private JTextField txConfUserPassword;

  /** Confirm ownder password text field. */
  private JTextField txConfOwnerPassword;

  /** Allow copy check box. */
  private JCheckBox cxAllowCopy;

  /** Allow screen readers check box. */
  private JCheckBox cxAllowScreenReaders;

  /** Allow printing check box. */
  private JComboBox cbAllowPrinting;

  /** Allow assembly check box. */
  private JCheckBox cxAllowAssembly;

  /** Allow modify contents check box. */
  private JCheckBox cxAllowModifyContents;

  /** Allow modify annotations check box. */
  private JCheckBox cxAllowModifyAnnotations;

  /** Allow fill in check box. */
  private JCheckBox cxAllowFillIn;

  /** Combo box for selecting the printing model. */
  private DefaultComboBoxModel printingModel;

  /** A combo-box for selecting the encoding. */
  private JComboBox cbEncoding;

  /** A model for the available encodings. */
  private EncodingComboBoxModel encodingModel;

  /** Confirmed flag. */
  private boolean confirmed;

  /** Confirm button. */
  private JButton btnConfirm;

  /** Cancel button. */
  private JButton btnCancel;

  /** Localised resources. */
  private ResourceBundle resources;

  /** A file chooser. */
  private JFileChooser fileChooser;

  /** The base resource class. */
  public static final String BASE_RESOURCE_CLASS =
      "com.jrefinery.report.resources.JFreeReportResources";

  /**
   * Creates a new PDF save dialog.
   *
   * @param owner  the dialog owner.
   */
  public PDFSaveDialog(final Frame owner)
  {
    super(owner);
    initConstructor();
  }

  /**
   * Creates a new PDF save dialog.
   *
   * @param owner  the dialog owner.
   */
  public PDFSaveDialog(final Dialog owner)
  {
    super(owner);
    initConstructor();
  }

  /**
   * Creates a new PDF save dialog.  The created dialog is modal.
   */
  public PDFSaveDialog()
  {
    initConstructor();
  }

  /**
   * Updates the security panel state. If no encryption is selected, all security
   * setting components will be disabled. 
   */
  protected void updateSecurityPanelEnabled ()
  {
    final boolean b = (rbSecurityNone.isSelected() == false);
    txUserPassword.setEnabled(b);
    txOwnerPassword.setEnabled(b);
    txConfOwnerPassword.setEnabled(b);
    txConfUserPassword.setEnabled(b);
    cxAllowAssembly.setEnabled(b);
    cxAllowCopy.setEnabled(b);
    cbAllowPrinting.setEnabled(b);
    cxAllowFillIn.setEnabled(b);
    cxAllowModifyAnnotations.setEnabled(b);
    cxAllowModifyContents.setEnabled(b);
    cxAllowScreenReaders.setEnabled(b);
  }

  /**
   * Initialisation.
   */
  private void initConstructor()
  {
    setModal(true);
    setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
    setTitle(getResources().getString("pdfsavedialog.dialogtitle"));
    initialize();
    clear();

    addWindowListener(new WindowAdapter()
    {
      public void windowClosing(final WindowEvent e)
      {
        getActionCancel().actionPerformed(null);
      }
    }
    );
  }

  /**
   * Gets and initializes the the combobox model for the security setting "allowPrinting".
   *
   * @return the combobox model containing the different values for the allowPrinting option.
   */
  private DefaultComboBoxModel getPrintingComboBoxModel()
  {
    if (printingModel == null)
    {
      final Object[] data = {
        getResources().getString("pdfsavedialog.option.noprinting"),
        getResources().getString("pdfsavedialog.option.degradedprinting"),
        getResources().getString("pdfsavedialog.option.fullprinting")
      };
      printingModel = new DefaultComboBoxModel(data);
    }
    return printingModel;
  }

  /**