Subversion Repositories openrisc

/* TextAreaDemo.java -- An example showing various textareas in Swing.

 Copyright (C) 2005, 2006 Free Software Foundation, Inc.

 This file is part of GNU Classpath examples.

 GNU Classpath 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, or (at your option)

 any later version.

 GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the

 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

 02110-1301 USA.

 */

package gnu.classpath.examples.swing;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics;

import java.awt.GridLayout;

import java.awt.Point;

import java.awt.Rectangle;

import java.awt.Shape;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.BorderFactory;

import javax.swing.Box;

import javax.swing.BoxLayout;

import javax.swing.JButton;

import javax.swing.JCheckBox;

import javax.swing.JComponent;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTabbedPane;

import javax.swing.JTextArea;

import javax.swing.SwingUtilities;

import javax.swing.text.BadLocationException;

import javax.swing.text.DefaultCaret;

import javax.swing.text.Highlighter;

import javax.swing.text.JTextComponent;

import javax.swing.text.View;

import javax.swing.text.LayeredHighlighter.LayerPainter;

/**

 * A simple textare demo showing various textareas in different states.

 */

public class TextAreaDemo

    extends JPanel

    implements ActionListener

{

  /**

   * A custom caret for demonstration purposes. This class is inspired by the

   * CornerCaret from the OReilly Swing book.

   *

   * @author Roman Kennke (kennke@aicas.com)

   */

  static class CornerCaret

      extends DefaultCaret

  {

    public CornerCaret()

    {

      super();

      setBlinkRate(500);

    }

    protected synchronized void damage(Rectangle r)

    {

      if (r == null)

        return;

      x = r.x;

      y = r.y + (r.height * 4 / 5 - 3);

      width = 5;

      height = 5;

      repaint();

    }

    public void paint(Graphics g)

    {

      JTextComponent comp = getComponent();

      if (comp == null)

        return;

      int dot = getDot();

      Rectangle r = null;

      try

        {

          r = comp.modelToView(dot);

        }

      catch (BadLocationException e)

        {

          return;

        }

      if (r == null)

        return;

      int dist = r.height * 4 / 5 - 3;

      if ((x != r.x) || (y != r.y + dist))

        {

          repaint();

          x = r.x;

          y = r.y + dist;

          width = 5;

          height = 5;

        }

      if (isVisible())

        {

          g.drawLine(r.x, r.y + dist, r.x, r.y + dist + 4);

          g.drawLine(r.x, r.y + dist + 4, r.x + 4, r.y + dist + 4);

        }

    }

  }

  static class DemoHighlightPainter

      extends LayerPainter

  {

    static DemoHighlightPainter INSTANCE = new DemoHighlightPainter();

    static Color[] colors = { Color.BLUE, Color.CYAN, Color.GRAY, Color.GREEN,

                             Color.MAGENTA, Color.ORANGE, Color.PINK,

                             Color.ORANGE, Color.RED, Color.BLUE, Color.YELLOW };

    public DemoHighlightPainter()

    {

      super();

    }

    private void paintHighlight(Graphics g, Rectangle rect)

    {

      g.fillRect(rect.x, rect.y, rect.width, rect.height);

    }

    public void paint(Graphics g, int p0, int p1, Shape bounds, JTextComponent t)

    {

      try

        {

          for (int i = p0; i < p1; i++)

            {

              Rectangle r = t.modelToView(i);

              Point l1 = t.modelToView(i + 1).getLocation();

              g.setColor(colors[(int) (Math.random() * colors.length)]);

              g.fillOval(r.x, r.y, l1.x - r.x, r.height);

            }

        }

      catch (BadLocationException ble)

        {

        }

    }

    public Shape paintLayer(Graphics g, int p0, int p1, Shape bounds,

                            JTextComponent c, View view)

    {

      paint(g, p0, p1, bounds, c);

      return bounds;

    }

  }

  /**

   * The non wrapping text areas and state buttons.

   */

  JTextArea textarea1;

  JTextArea textarea2;

  JTextArea textarea3;

  JCheckBox enabled1;

  JCheckBox editable1;

  JPanel panel1;

  /**

   * The char wrapping textareas and state buttons.

   */

  JTextArea textarea4;

  JTextArea textarea5;

  JTextArea textarea6;

  JCheckBox enabled2;

  JCheckBox editable2;

  /**

   * The word wrapping textareas and state buttons.

   */

  JTextArea textarea7;

  JTextArea textarea8;

  JTextArea textarea9;

  JCheckBox enabled3;

  JCheckBox editable3;

  /**

   * The custom colored textareas and state buttons.

   */

  JTextArea textarea10;

  JTextArea textarea11;

  JTextArea textarea12;

  JTextArea textarea13;

  JTextArea textarea14;

  JTextArea textarea14b;

  JCheckBox enabled4;

  JCheckBox editable4;

  /**

   * Some miscellaneous textarea demos.

   */

  JTextArea textarea15;

  JTextArea textarea16;

  JTextArea textarea17;

  JCheckBox enabled5;

  JCheckBox editable5;

  /**

   * Creates a new demo instance.

   */

  public TextAreaDemo()

  {

    super();

    createContent();

  }

  /**

   * When the demo is run independently, the frame is displayed, so we should

   * initialise the content panel (including the demo content and a close

   * button). But when the demo is run as part of the Swing activity board, only

   * the demo content panel is used, the frame itself is never displayed, so we

   * can avoid this step.

   */

  void initFrameContent()

  {

    JPanel closePanel = new JPanel();

    JButton closeButton = new JButton("Close");

    closeButton.setActionCommand("CLOSE");

    closeButton.addActionListener(this);

    closePanel.add(closeButton);

    add(closePanel, BorderLayout.SOUTH);

  }

  /**

   * Returns a panel with the demo content. The panel uses a BorderLayout(), and

   * the BorderLayout.SOUTH area is empty, to allow callers to add controls to

   * the bottom of the panel if they want to (a close button is added if this

   * demo is being run as a standalone demo).

   */

  private void createContent()

  {

    setLayout(new BorderLayout());

    JTabbedPane tabPane = new JTabbedPane();

    tabPane.addTab("Non-wrap", createNonWrapPanel());

    tabPane.addTab("Char-wrap", createCharWrapPanel());

    tabPane.addTab("Word-wrap", createWordWrapPanel());

    tabPane.addTab("Custom colors", createCustomColoredPanel());

    tabPane.addTab("Misc", createMiscPanel());

    add(tabPane);

  }

  private JPanel createNonWrapPanel()

  {

    JPanel panel = new JPanel(new BorderLayout());

    panel.setBorder(BorderFactory.createTitledBorder("Not wrapping"));

    panel1 = new JPanel(new GridLayout(2, 2));

    textarea1 = new JTextArea("Hello World!");

    textarea1.setFont(new Font("Dialog", Font.PLAIN, 8));

    panel1.add(new JScrollPane(textarea1));

    textarea2 = new JTextArea("Hello World!");

    textarea2.setFont(new Font("Dialog", Font.ITALIC, 12));

    panel1.add(new JScrollPane(textarea2));

    textarea3 = new JTextArea("Hello World!");

    textarea3.setFont(new Font("Dialog", Font.BOLD, 14));

    panel1.add(new JScrollPane(textarea3));

    panel.add(panel1);

    JPanel statePanel = new JPanel();

    statePanel.setLayout(new BoxLayout(statePanel, BoxLayout.Y_AXIS));

    statePanel.add(Box.createVerticalGlue());

    enabled1 = new JCheckBox("enabled");

    enabled1.setSelected(true);

    enabled1.addActionListener(this);

    enabled1.setActionCommand("ENABLED1");

    statePanel.add(enabled1);

    editable1 = new JCheckBox("editable");

    editable1.setSelected(true);

    editable1.addActionListener(this);

    editable1.setActionCommand("EDITABLE1");

    statePanel.add(editable1);

    statePanel.add(Box.createVerticalGlue());

    panel.add(statePanel, BorderLayout.EAST);

    return panel;

  }

  private JPanel createCharWrapPanel()

  {

    JPanel panel = new JPanel(new BorderLayout());

    panel.setBorder(BorderFactory.createTitledBorder("Wrap at char bounds"));

    JPanel innerPanel = new JPanel(new GridLayout(2, 2));

    textarea4 = new JTextArea("Hello World!");

    textarea4.setLineWrap(true);

    textarea4.setFont(new Font("Dialog", Font.PLAIN, 8));

    innerPanel.add(new JScrollPane(textarea4));

    textarea5 = new JTextArea("Hello World!");

    textarea5.setLineWrap(true);

    textarea5.setFont(new Font("Dialog", Font.ITALIC, 12));

    innerPanel.add(new JScrollPane(textarea5));

    textarea6 = new JTextArea("Hello World!");

    textarea6.setLineWrap(true);

    textarea6.setFont(new Font("Dialog", Font.BOLD, 14));

    innerPanel.add(new JScrollPane(textarea6));

    panel.add(innerPanel);

    JPanel statePanel = new JPanel();

    statePanel.setLayout(new BoxLayout(statePanel, BoxLayout.Y_AXIS));

    statePanel.add(Box.createVerticalGlue());

    enabled2 = new JCheckBox("enabled");

    enabled2.setSelected(true);

    enabled2.addActionListener(this);

    enabled2.setActionCommand("ENABLED2");

    statePanel.add(enabled2);

    editable2 = new JCheckBox("editable");

    editable2.setSelected(true);

    editable2.addActionListener(this);

    editable2.setActionCommand("EDITABLE2");

    statePanel.add(editable2);

    statePanel.add(Box.createVerticalGlue());

    panel.add(statePanel, BorderLayout.EAST);

    return panel;

  }

  private JPanel createWordWrapPanel()

  {

    JPanel panel = new JPanel(new BorderLayout());

    panel.setBorder(BorderFactory.createTitledBorder("Wrap at word bounds"));

    JPanel innerPanel = new JPanel(new GridLayout(2, 2));

    textarea7 = new JTextArea("Hello World!");

    textarea7.setWrapStyleWord(true);

    textarea7.setLineWrap(true);

    textarea7.setFont(new Font("Dialog", Font.PLAIN, 8));

    innerPanel.add(new JScrollPane(textarea7));

    textarea8 = new JTextArea("Hello World!");

    textarea8.setWrapStyleWord(true);

    textarea8.setLineWrap(true);

    textarea8.setFont(new Font("Dialog", Font.ITALIC, 12));

    innerPanel.add(new JScrollPane(textarea8));

    textarea9 = new JTextArea("Hello World!");

    textarea9.setWrapStyleWord(true);

    textarea9.setLineWrap(true);

    textarea9.setFont(new Font("Dialog", Font.BOLD, 14));

    innerPanel.add(new JScrollPane(textarea9));

    panel.add(innerPanel);

    JPanel statePanel = new JPanel();

    statePanel.setLayout(new BoxLayout(statePanel, BoxLayout.Y_AXIS));

    statePanel.add(Box.createVerticalGlue());

    enabled3 = new JCheckBox("enabled");

    enabled3.setSelected(true);

    enabled3.addActionListener(this);

    enabled3.setActionCommand("ENABLED3");

    statePanel.add(enabled3);

    editable3 = new JCheckBox("editable");

    editable3.setSelected(true);

    editable3.addActionListener(this);

    editable3.setActionCommand("EDITABLE3");

    statePanel.add(editable3);

    statePanel.add(Box.createVerticalGlue());

    panel.add(statePanel, BorderLayout.EAST);

    return panel;

  }

  private JPanel createCustomColoredPanel()

  {

    JPanel panel = new JPanel(new BorderLayout());

    JPanel innerPanel = new JPanel(new GridLayout(3, 2));

    panel.setBorder(BorderFactory.createTitledBorder("Custom colors"));

    textarea10 = new JTextArea("custom foreground", 10, 15);

    textarea10.setForeground(Color.GREEN);

    innerPanel.add(new JScrollPane(textarea10));

    textarea11 = new JTextArea("custom background", 10, 15);

    textarea11.setBackground(Color.YELLOW);

    innerPanel.add(new JScrollPane(textarea11));

    textarea12 = new JTextArea("custom disabled textcolor", 10, 15);

    textarea12.setDisabledTextColor(Color.BLUE);

    innerPanel.add(new JScrollPane(textarea12));

    textarea13 = new JTextArea("custom selected text color", 10, 15);

    textarea13.setSelectedTextColor(Color.RED);

    innerPanel.add(new JScrollPane(textarea13));

    textarea14 = new JTextArea("custom selection color", 10, 15);

    textarea14.setSelectionColor(Color.RED);

    innerPanel.add(new JScrollPane(textarea14));

    textarea14b = new JTextArea("custom selection and selected text color", 10, 15);

    textarea14b.setSelectedTextColor(Color.WHITE);

    textarea14b.setSelectionColor(Color.BLACK);

    innerPanel.add(new JScrollPane(textarea14b));

    panel.add(innerPanel);

    JPanel statePanel = new JPanel();

    statePanel.setLayout(new BoxLayout(statePanel, BoxLayout.Y_AXIS));

    statePanel.add(Box.createVerticalGlue());

    enabled4 = new JCheckBox("enabled");

    enabled4.setSelected(true);

    enabled4.addActionListener(this);

    enabled4.setActionCommand("ENABLED4");

    statePanel.add(enabled4);

    editable4 = new JCheckBox("editable");

    editable4.setSelected(true);

    editable4.addActionListener(this);

    editable4.setActionCommand("EDITABLE4");

    statePanel.add(editable4);

    statePanel.add(Box.createVerticalGlue());

    panel.add(statePanel, BorderLayout.EAST);

    return panel;

  }

  private JPanel createMiscPanel()

  {

    JPanel panel = new JPanel(new BorderLayout());

    panel.setBorder(BorderFactory.createTitledBorder("Miscellaneous"));

    JPanel innerPanel = new JPanel(new GridLayout(2, 2));

    textarea15 = new JTextArea("Custom Caret");

    textarea15.setCaret(new CornerCaret());

    innerPanel.add(new JScrollPane(textarea15));

    textarea16 = new JTextArea("Custom Caret color");

    textarea16.setCaretColor(Color.MAGENTA);

    innerPanel.add(new JScrollPane(textarea16));

    textarea16 = new JTextArea("Custom Selection painter");

    textarea16.setFont(new Font("Dialog", Font.PLAIN, 24));

    textarea16.setCaret(new DefaultCaret()

    {

      public Highlighter.HighlightPainter getSelectionPainter()

      {

        return DemoHighlightPainter.INSTANCE;

      }

    });

    innerPanel.add(new JScrollPane(textarea16));

    panel.add(innerPanel);

    JPanel statePanel = new JPanel();

    statePanel.setLayout(new BoxLayout(statePanel, BoxLayout.Y_AXIS));

    statePanel.add(Box.createVerticalGlue());

    enabled5 = new JCheckBox("enabled");

    enabled5.setSelected(true);

    enabled5.addActionListener(this);

    enabled5.setActionCommand("ENABLED5");

    statePanel.add(enabled5);

    editable5 = new JCheckBox("editable");

    editable5.setSelected(true);

    editable5.addActionListener(this);

    editable5.setActionCommand("EDITABLE5");

    statePanel.add(editable5);

    statePanel.add(Box.createVerticalGlue());

    panel.add(statePanel, BorderLayout.EAST);

    return panel;

  }

  public void actionPerformed(ActionEvent e)

  {

    if (e.getActionCommand().equals("CLOSE"))

      {

        System.exit(0);

      }

    else if (e.getActionCommand().equals("ENABLED1"))

      {

        boolean enabled = enabled1.isSelected();

        textarea1.setEnabled(enabled);

        textarea2.setEnabled(enabled);

        textarea3.setEnabled(enabled);

      }

    else if (e.getActionCommand().equals("EDITABLE1"))

      {

        boolean editable = editable1.isSelected();

        textarea1.setEditable(editable);

        textarea2.setEditable(editable);

        textarea3.setEditable(editable);

      }

    else if (e.getActionCommand().equals("ENABLED2"))

      {

        boolean enabled = enabled2.isSelected();

        textarea4.setEnabled(enabled);

        textarea5.setEnabled(enabled);

        textarea6.setEnabled(enabled);

      }

    else if (e.getActionCommand().equals("EDITABLE2"))

      {

        boolean editable = editable2.isSelected();

        textarea4.setEditable(editable);

        textarea5.setEditable(editable);

        textarea6.setEditable(editable);

      }

    else if (e.getActionCommand().equals("ENABLED3"))

      {

        boolean enabled = enabled3.isSelected();

        textarea7.setEnabled(enabled);

        textarea8.setEnabled(enabled);

        textarea9.setEnabled(enabled);

      }

    else if (e.getActionCommand().equals("EDITABLE3"))

      {

        boolean editable = editable3.isSelected();

        textarea7.setEditable(editable);

        textarea8.setEditable(editable);

        textarea9.setEditable(editable);

      }

    else if (e.getActionCommand().equals("ENABLED4"))

      {

        boolean enabled = enabled4.isSelected();

        textarea10.setEnabled(enabled);

        textarea11.setEnabled(enabled);

        textarea12.setEnabled(enabled);

        textarea13.setEnabled(enabled);

        textarea14.setEnabled(enabled);

        textarea14b.setEnabled(enabled);

      }

    else if (e.getActionCommand().equals("EDITABLE4"))

      {

        boolean editable = editable4.isSelected();

        textarea10.setEditable(editable);

        textarea11.setEditable(editable);

        textarea12.setEditable(editable);

        textarea13.setEditable(editable);

        textarea14.setEditable(editable);

        textarea14b.setEditable(editable);

      }

  }

  public static void main(String[] args)

  {

    SwingUtilities.invokeLater

    (new Runnable()

     {

       public void run()

       {

         TextAreaDemo app = new TextAreaDemo();

         app.initFrameContent();

         JFrame frame = new JFrame();

         frame.getContentPane().add(app);