Font Chooser extends javax.swing.JDialog : JDialog « Swing « Java Tutorial






/*
Atlantida is an open source (GPL) multilingual dictionary written in Java.
It can translate words from one language to another and pronounce them.
Copyright (C) 2006 Sergey S. http://atla.revdanica.com/

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

/**
* FontChooser
* @author Janos Szatmary, Sergei S.
* @version 003
*/
/*
 * http://forum.java.sun.com/thread.jsp?forum=57&thread=124810
 * For those who asked where's the constructor, have in mind that the constructor provided
 * is private. As the author of the code says, the use of this class is as
 * follows (supposing we are in a Frame class):
 * FontChooser.showDialog(this,"FontChooser",new Font("Dialog", 0, 12));

 * This file originally writter by Janos Szatmary, then modifyed by Sergei S. for
 * Atlantida Multilingual Dictionary http://atla.sf.net
*/



import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;


public class FontChooser extends javax.swing.JDialog
{

  String[] styleList = new String[]
  { "Plain","Bold","Italic"};
  String[] sizeList = new String[]
  { "2","4","6","8","10","12","14","16","18","20","22","24","30","36","48","72"};

  String currentFont = null;
  int currentStyle = -1;
  int currentSize = -1;

  public boolean ok = false;

  /* ------------------------------------------------------------- */
  private FontChooser(java.awt.Frame parent,boolean modal)
  {
    super (parent,modal);
    initComponents();
    setListValues(jFontList,GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames());
    setListValues(jStyleList,styleList);
    setListValues(jSizeList,sizeList);
    setCurrentFont(jSample.getFont());
    pack();
  }

  private FontChooser(java.awt.Frame parent,boolean modal,Font font)
  {
    this(parent,modal);
    setCurrentFont(font);
  }

  /* ------------------------------------------------------------- */
  private void setListValues(JList list,String[] values)
  {
    if(list.getModel() instanceof DefaultListModel)
    {
      DefaultListModel model = (DefaultListModel)
                               list.getModel();
      model.removeAllElements();
      for( String value : values )
      {
        model.addElement( value );
      }
    }
  }

  /* ------------------------------------------------------------- */
  private void setSampleFont()
  {
    if(currentFont != null && currentStyle >= 0 && currentSize > 0)
    {
      jSample.setFont(new Font
                      (currentFont,currentStyle,currentSize));
    }
  }

  private String styleToString(int style)
  {
    String str = "";
    if((style&Font.BOLD) == Font.BOLD)
    {
      if(str.length() > 0)
      {
        str += ",";
      }
      str += "Bold";
    }
    if((style&Font.ITALIC) == Font.ITALIC)
    {
      if(str.length() > 0)
      {
        str += ",";
      }
      str += "Italic";
    }
    if( str.length() <= 0 )
    {
      str = "Plain";
    }
    return str;
  }

  /* ------------------------------------------------------------- */
  public Font getCurrentFont()
  {
    return jSample.getFont();
  }

  /* ------------------------------------------------------------- */
  public void setCurrentFont(Font font)
  {
    if(font==null)
    {
      font = jSample.getFont();
    }

    jFont.setText(font.getName());
    jFontActionPerformed(null);

    jStyle.setText(styleToString(font.getStyle()));
    jStyleActionPerformed(null);

    jSize.setText(Integer.toString(font.getSize()));
    jSizeActionPerformed(null);
  }


  // Create font chooser dialog.
  // If user selected a font (i.e. clicked OK button) - return the font that user has selected.
  // If user didn't click OK button - return "null".
  public static Font showDialog( Frame parent, String title, Font font)
  {
    FontChooser dialog = new FontChooser(parent,true,font);

    Point p1 = parent.getLocation();
    Dimension d1 = parent.getSize();
    Dimension d2 = dialog.getSize();

    int x = p1.x+(d1.width-d2.width)/2;
    int y = p1.y+(d1.height-d2.height)/2;

    if(x < 0)
    {
      x = 0;
    }
    if(y < 0)
    {
      y = 0;
    }

    if(title!=null)
    {
      dialog.setTitle(title);
    }
    dialog.setLocation(x,y);
    dialog.setVisible(true);

    Font newfont = null;
    if(dialog.ok)
    {
      newfont = dialog.getCurrentFont();
    }

    dialog.dispose();
    return newfont;
  }

  /** This method is called from within the constructor to
  * initialize the form.
  * WARNING: Do NOT modify this code. The content of this method is
  * always regenerated by the FormEditor.
  */
  private void initComponents()
  {
    jPanel3 = new javax.swing.JPanel();
    jFont = new javax.swing.JTextField();
    jScrollPane1 = new javax.swing.JScrollPane();
    jFontList = new javax.swing.JList();
    jPanel4 = new javax.swing.JPanel();
    jStyle = new javax.swing.JTextField();
    jScrollPane2 = new javax.swing.JScrollPane();
    jStyleList = new javax.swing.JList();
    jPanel5 = new javax.swing.JPanel();
    jSize = new javax.swing.JTextField();
    jScrollPane3 = new javax.swing.JScrollPane();
    jSizeList = new javax.swing.JList();
    jPanel1 = new javax.swing.JPanel();
    jScrollPane4 = new javax.swing.JScrollPane();
    jSample = new javax.swing.JTextArea();
    jButtons = new javax.swing.JPanel();
    jOk = new javax.swing.JButton();
    jCancel = new javax.swing.JButton();
    jLabel6 = new javax.swing.JLabel();
    getContentPane().setLayout(new java.awt.GridBagLayout());
    java.awt.GridBagConstraints gridBagConstraints1;
    setTitle("Font Chooser");
    addWindowListener(new java.awt.event.WindowAdapter()
                      {
                        public void windowClosing(java.awt.event.WindowEvent evt)
                        {
                          closeDialog(evt);
                        }
                      }
                     );

    jPanel3.setLayout(new java.awt.GridBagLayout());
    java.awt.GridBagConstraints gridBagConstraints2;
    jPanel3.setBorder(new javax.swing.border.TitledBorder(new javax.swing.border.EtchedBorder(), " Font "));

    jFont.setColumns(24);
    jFont.addActionListener(new java.awt.event.ActionListener()
                            {
                              public void actionPerformed(java.awt.event.ActionEvent evt)
                              {
                                jFontActionPerformed(evt);
                              }
                            }
                           );
    gridBagConstraints2 = new java.awt.GridBagConstraints();
    gridBagConstraints2.gridwidth = 0;
    gridBagConstraints2.fill =
    java.awt.GridBagConstraints.HORIZONTAL;
    gridBagConstraints2.insets = new java.awt.Insets(0, 3, 0, 3);
    gridBagConstraints2.anchor = java.awt.GridBagConstraints.NORTHWEST;
    gridBagConstraints2.weightx = 1.0;
    jPanel3.add(jFont, gridBagConstraints2);



    jFontList.setModel(new DefaultListModel());
    jFontList.setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION);
    jFontList.addListSelectionListener(new javax.swing.event.ListSelectionListener()
                                       {
                                         public void valueChanged(javax.swing.event.ListSelectionEvent evt)
                                         {
                                           jFontListValueChanged(evt);
                                         }
                                       }
                                      );
    jScrollPane1.setViewportView(jFontList);

    gridBagConstraints2 = new java.awt.GridBagConstraints();
    gridBagConstraints2.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints2.insets = new java.awt.Insets(3, 3, 3, 3);
    gridBagConstraints2.anchor = java.awt.GridBagConstraints.NORTHWEST;
    gridBagConstraints2.weightx = 1.0;
    gridBagConstraints2.weighty = 1.0;
    jPanel3.add(jScrollPane1, gridBagConstraints2);


    gridBagConstraints1 = new java.awt.GridBagConstraints();
    gridBagConstraints1.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints1.insets = new java.awt.Insets(5, 5, 0, 0);
    gridBagConstraints1.weightx = 0.5;
    gridBagConstraints1.weighty = 1.0;
    getContentPane().add(jPanel3, gridBagConstraints1);


    jPanel4.setLayout(new java.awt.GridBagLayout());
    java.awt.GridBagConstraints gridBagConstraints3;
    jPanel4.setBorder(new javax.swing.border.TitledBorder(new javax.swing.border.EtchedBorder(), " Style "));

    jStyle.setColumns(18);
    jStyle.addActionListener(new java.awt.event.ActionListener()
                             {
                               public void actionPerformed(java.awt.event.ActionEvent evt)
                               {
                                 jStyleActionPerformed(evt);
                               }
                             }
                            );
    gridBagConstraints3 = new java.awt.GridBagConstraints();
    gridBagConstraints3.gridwidth = 0;
    gridBagConstraints3.fill =
    java.awt.GridBagConstraints.HORIZONTAL;
    gridBagConstraints3.insets = new java.awt.Insets(0, 3, 0, 3);
    gridBagConstraints3.anchor = java.awt.GridBagConstraints.NORTHWEST;
    gridBagConstraints3.weightx = 1.0;
    jPanel4.add(jStyle, gridBagConstraints3);

    jStyleList.setModel(new DefaultListModel());
    jStyleList.setVisibleRowCount(4);
    jStyleList.addListSelectionListener(new javax.swing.event.ListSelectionListener()
                                        {
                                          public void valueChanged(javax.swing.event.ListSelectionEvent evt)
                                          {
                                            jStyleListValueChanged(evt);
                                          }
                                        }
                                       );
    jScrollPane2.setViewportView(jStyleList);

    gridBagConstraints3 = new java.awt.GridBagConstraints();
    gridBagConstraints3.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints3.insets = new java.awt.Insets(3, 3, 3, 3);
    gridBagConstraints3.anchor = java.awt.GridBagConstraints.NORTHWEST;
    gridBagConstraints3.weightx = 0.5;
    gridBagConstraints3.weighty = 1.0;
    jPanel4.add(jScrollPane2, gridBagConstraints3);

    gridBagConstraints1 = new java.awt.GridBagConstraints();
    gridBagConstraints1.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints1.insets = new java.awt.Insets(5, 5, 0, 0);
    gridBagConstraints1.weightx = 0.375;
    gridBagConstraints1.weighty = 1.0;
    getContentPane().add(jPanel4, gridBagConstraints1);

    jPanel5.setLayout(new java.awt.GridBagLayout());
    java.awt.GridBagConstraints gridBagConstraints4;
    jPanel5.setBorder(new javax.swing.border.TitledBorder(new javax.swing.border.EtchedBorder(), " Size "));

    jSize.setColumns(6);
    jSize.addActionListener(new
                            java.awt.event.ActionListener()
                            {
                              public void actionPerformed(java.awt.event.ActionEvent evt)
                              {
                                jSizeActionPerformed(evt);
                              }
                            }
                           );
    gridBagConstraints4 = new java.awt.GridBagConstraints();
    gridBagConstraints4.gridwidth = 0;
    gridBagConstraints4.fill = java.awt.GridBagConstraints.HORIZONTAL;
    gridBagConstraints4.insets = new java.awt.Insets(0, 3, 0, 3);
    gridBagConstraints4.anchor = java.awt.GridBagConstraints.NORTHWEST;
    gridBagConstraints4.weightx = 1.0;
    jPanel5.add(jSize, gridBagConstraints4);

    jSizeList.setModel(new DefaultListModel());
    jSizeList.setVisibleRowCount(4);
    jSizeList.setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION);
    jSizeList.addListSelectionListener(new javax.swing.event.ListSelectionListener()
                                       {
                                         public void valueChanged(javax.swing.event.ListSelectionEvent evt)
                                         {
                                           jSizeListValueChanged(evt);
                                         }
                                       }
                                      );
    jScrollPane3.setViewportView(jSizeList);

    gridBagConstraints4 = new java.awt.GridBagConstraints();
    gridBagConstraints4.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints4.insets = new java.awt.Insets(3, 3, 3, 3);
    gridBagConstraints4.anchor = java.awt.GridBagConstraints.NORTHWEST;
    gridBagConstraints4.weightx = 0.25;
    gridBagConstraints4.weighty = 1.0;
    jPanel5.add(jScrollPane3, gridBagConstraints4);

    gridBagConstraints1 = new java.awt.GridBagConstraints();
    gridBagConstraints1.gridwidth = 0;
    gridBagConstraints1.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints1.insets = new java.awt.Insets(5, 5, 0, 5);
    gridBagConstraints1.weightx = 0.125;
    gridBagConstraints1.weighty = 1.0;
    getContentPane().add(jPanel5, gridBagConstraints1);

    jPanel1.setLayout(new java.awt.GridBagLayout());
    java.awt.GridBagConstraints gridBagConstraints5;
    jPanel1.setBorder(new javax.swing.border.TitledBorder(new javax.swing.border.EtchedBorder(), " Sample "));

    jSample.setWrapStyleWord(true);
    jSample.setLineWrap(true);
    jSample.setColumns(20);
    jSample.setRows(3);
    jSample.setText("The quick brown fox jumped over the lazy dog.");
    jScrollPane4.setViewportView(jSample);

    gridBagConstraints5 = new java.awt.GridBagConstraints();
    gridBagConstraints5.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints5.insets = new java.awt.Insets(0, 3, 3, 3);
    gridBagConstraints5.weightx = 1.0;
    gridBagConstraints5.weighty = 1.0;
    jPanel1.add(jScrollPane4, gridBagConstraints5);

    gridBagConstraints1 = new java.awt.GridBagConstraints();
    gridBagConstraints1.gridwidth = 0;
    gridBagConstraints1.fill = java.awt.GridBagConstraints.BOTH;
    gridBagConstraints1.insets = new java.awt.Insets(0, 5, 0, 5);
    gridBagConstraints1.anchor = java.awt.GridBagConstraints.NORTHWEST;
    gridBagConstraints1.weightx = 1.0;
    getContentPane().add(jPanel1, gridBagConstraints1);

    jButtons.setLayout(new java.awt.GridBagLayout());
    java.awt.GridBagConstraints gridBagConstraints6;

    jOk.setMnemonic(KeyEvent.VK_O);
    jOk.setText("OK");
    jOk.setRequestFocusEnabled(false);
    jOk.addActionListener(new java.awt.event.ActionListener()
                          {
                            public void actionPerformed(java.awt.event.ActionEvent evt)
                            {
                              jOkActionPerformed(evt);
                            }
                          }
                         );
    gridBagConstraints6 = new java.awt.GridBagConstraints();
    gridBagConstraints6.insets = new java.awt.Insets(5, 5, 5, 0);
    gridBagConstraints6.anchor = java.awt.GridBagConstraints.WEST;
    jButtons.add(jOk, gridBagConstraints6);


    jCancel.setMnemonic(KeyEvent.VK_C);
    jCancel.setText("Cancel");
    jCancel.setRequestFocusEnabled(false);
    jCancel.addActionListener(new
                              java.awt.event.ActionListener()
                              {
                                public void actionPerformed(java.awt.event.ActionEvent evt)
                                {
                                  jCancelActionPerformed(evt);
                                }
                              }
                             );
    gridBagConstraints6 = new java.awt.GridBagConstraints();
    gridBagConstraints6.gridwidth = 0;
    gridBagConstraints6.insets = new java.awt.Insets(5, 5, 5, 5);
    gridBagConstraints6.anchor = java.awt.GridBagConstraints.WEST;
    gridBagConstraints6.weightx = 1.0;
    jButtons.add(jCancel, gridBagConstraints6);

    gridBagConstraints6 = new java.awt.GridBagConstraints();
    gridBagConstraints6.weightx = 1.0;
    jButtons.add(jLabel6, gridBagConstraints6);

    gridBagConstraints1 = new java.awt.GridBagConstraints();
    gridBagConstraints1.gridwidth = 0;
    gridBagConstraints1.anchor = java.awt.GridBagConstraints.SOUTHWEST;
    gridBagConstraints1.weightx = 1.0;
    getContentPane().add(jButtons, gridBagConstraints1);
  }

  private void jCancelActionPerformed(java.awt.event.ActionEvent evt)
  {
    // Add your handling code here:
    setVisible(false);
  }

  private void jOkActionPerformed (java.awt.event.ActionEvent evt)
  {
    // Add your handling code here:
    ok = true;
    setVisible(false);
  }

  private void jSizeActionPerformed (java.awt.event.ActionEvent evt)
  {
    // Add your handling code here:
    int size = Integer.parseInt(jSize.getText());
    if(size > 0)
    {
      currentSize = size;
      setSampleFont();
    }
  }

  private void jStyleActionPerformed (java.awt.event.ActionEvent evt)
  {
    // Add your handling code here:
    StringTokenizer st = new StringTokenizer(jStyle.getText(),",");
    int style = 0;
    while(st.hasMoreTokens())
    {
      String str = st.nextToken().trim();
      if(str.equalsIgnoreCase("Plain"))
      {
        style |= Font.PLAIN;
      }
      else
        if(str.equalsIgnoreCase("Bold"))
      {
        style |= Font.BOLD;
      }
      else
        if(str.equalsIgnoreCase("Italic"))
      {
        style |= Font.ITALIC;
      }
    }
    if(style >= 0)
    {
      currentStyle = style;
      setSampleFont();
    }
  }

  private void jFontActionPerformed (java.awt.event.ActionEvent evt)
  {
    // Add your handling code here:
    DefaultListModel model = (DefaultListModel)
                             jFontList.getModel();
    if(model.indexOf(jFont.getText()) >= 0)
    {
      currentFont = jFont.getText();
      setSampleFont();
    }
  }

  private void jStyleListValueChanged(javax.swing.event.ListSelectionEvent evt)
  {
    // Add your handling code here:
    String str = "";
    Object[] values = jStyleList.getSelectedValues();

    if(values.length > 0)
    {
      int j;
      for(j=0; j < values.length; j++)
      {
        String s = (String) values[j];
        if(s.equalsIgnoreCase("Plain"))
        {
          str = "Plain";  break;
        }
        if(str.length() > 0)
        {
          str += ",";
        }
        str += (String) values[j];
      }
    }
    else
    {
      str = styleToString(currentStyle);
    }

    jStyle.setText(str);
    jStyleActionPerformed(null);
  }

  private void jSizeListValueChanged(javax.swing.event.ListSelectionEvent evt)
  {
    // Add your handling code here:
    String str = (String) jSizeList.getSelectedValue();
    if(str==null || str.length() <= 0)
    {
      str = Integer.toString(currentSize);
    }
    jSize.setText(str);
    jSizeActionPerformed(null);
  }

  private void jFontListValueChanged(javax.swing.event.ListSelectionEvent evt)
  {
    // Add your handling code here:
    String str = (String) jFontList.getSelectedValue();
    if(str==null || str.length() <= 0)
    {
      str = currentFont;
    }
    jFont.setText(str);
    jFontActionPerformed(null);
  }

  /** Closes the dialog */
  private void closeDialog(java.awt.event.WindowEvent evt)
  {
    setVisible (false);
  }

  // Variables declaration - do not modify
  private javax.swing.JPanel jPanel3;
  private javax.swing.JTextField jFont;
  private javax.swing.JScrollPane jScrollPane1;
  private javax.swing.JList jFontList;
  private javax.swing.JPanel jPanel4;
  private javax.swing.JTextField jStyle;
  private javax.swing.JScrollPane jScrollPane2;
  private javax.swing.JList jStyleList;
  private javax.swing.JPanel jPanel5;
  private javax.swing.JTextField jSize;
  private javax.swing.JScrollPane jScrollPane3;
  private javax.swing.JList jSizeList;
  private javax.swing.JPanel jPanel1;
  private javax.swing.JScrollPane jScrollPane4;
  private javax.swing.JTextArea jSample;
  private javax.swing.JPanel jButtons;
  private javax.swing.JButton jOk;
  private javax.swing.JButton jCancel;
  private javax.swing.JLabel jLabel6;
  // End of variables declaration
}








14.74.JDialog
14.74.1.Dialog Introduction
14.74.2.A Simple Modal DialogA Simple Modal Dialog
14.74.3.JDialog is specify that pressing the Escape key cancels the dialog.JDialog is specify that pressing the Escape key cancels the dialog.
14.74.4.Address DialogAddress Dialog
14.74.5.Set Default Close Operation for Dialog
14.74.6.Extending JDialog
14.74.7.extends JDialog to create your own dialog
14.74.8.The base class for standard dialogs.
14.74.9.A dialog that presents the user with a sequence of steps for completing a task.
14.74.10.Positions the specified dialog at a position relative to its parent.
14.74.11.A dialog allow selection and a font and its associated info.
14.74.12.Font Chooser extends javax.swing.JDialog
14.74.13.FontChooser by Noah w
14.74.14.Dialog Panel