Example usage for javax.swing.event DocumentListener DocumentListener

Introduction

In this page you can find the example usage for javax.swing.event DocumentListener DocumentListener.

Prototype

DocumentListener

Source Link

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    JTextComponent textcomp = new JTextPane();
    textcomp.setText("Initial Text");
    textcomp.getDocument().addDocumentListener(new DocumentListener() {
        public void insertUpdate(DocumentEvent evt) {
            int off = evt.getOffset();
            System.out.println("off:" + off);
            int len = evt.getLength();
            System.out.println("len:" + len);
            try {
                String str = evt.getDocument().getText(off, len);
                System.out.println(str);
            } catch (BadLocationException e) {
            }/*  ww w.j  av  a 2s.com*/
        }

        public void removeUpdate(DocumentEvent evt) {
            int off = evt.getOffset();
            System.out.println("off:" + off);
            int len = evt.getLength();
            System.out.println("len:" + len);
        }

        public void changedUpdate(DocumentEvent evt) {
            int off = evt.getOffset();
            System.out.println("off:" + off);
            int len = evt.getLength();
            System.out.println("len:" + len);
        }
    });
}

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From source file:Main.java

public static void main(String[] args) {
    JPanel mainPanel = new JPanel();
    JTextField field = new JTextField(20);
    JTextField field1 = new JTextField(20);

    field.getDocument().addDocumentListener(new DocumentListener() {
        @Override//from  ww w .  j a va  2  s  . c o m
        public void changedUpdate(DocumentEvent e) {
            updateLabel(e);
        }

        @Override
        public void insertUpdate(DocumentEvent e) {
            updateLabel(e);
        }

        @Override
        public void removeUpdate(DocumentEvent e) {
            updateLabel(e);
        }

        private void updateLabel(DocumentEvent e) {
            field1.setText(field.getText());
        }
    });

    mainPanel.setLayout(new GridLayout(1, 0, 10, 0));
    mainPanel.add(field);
    mainPanel.add(field1);

    JFrame frame = new JFrame();
    frame.getContentPane().add(mainPanel);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.setVisible(true);
}

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From source file:AddingDocumentListenerJTextFieldSample.java

public static void main(String args[]) {
    final JFrame frame = new JFrame("Default Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JTextField textField = new JTextField();
    frame.add(textField, BorderLayout.NORTH);

    DocumentListener documentListener = new DocumentListener() {
        public void changedUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);/*from  w  ww. ja  v a2  s .  c o m*/
        }

        public void insertUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);
        }

        public void removeUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);
        }

        private void printIt(DocumentEvent documentEvent) {
            DocumentEvent.EventType type = documentEvent.getType();
            String typeString = null;
            if (type.equals(DocumentEvent.EventType.CHANGE)) {
                typeString = "Change";
            } else if (type.equals(DocumentEvent.EventType.INSERT)) {
                typeString = "Insert";
            } else if (type.equals(DocumentEvent.EventType.REMOVE)) {
                typeString = "Remove";
            }
            System.out.print("Type : " + typeString);
            Document source = documentEvent.getDocument();
            int length = source.getLength();
            System.out.println("Length: " + length);
        }
    };
    textField.getDocument().addDocumentListener(documentListener);

    frame.setSize(250, 150);
    frame.setVisible(true);
}

---

From source file:Main.java

public static void main(String[] args) {
    JPanel topPanel = new JPanel();
    topPanel.setPreferredSize(new Dimension(200, 200));
    topPanel.setBackground(Color.WHITE);

    JTextArea chatArea = new JTextArea();
    JScrollPane scrollPane = new JScrollPane(chatArea);

    JPanel mainPanel = new JPanel(new BorderLayout(5, 5));
    mainPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
    mainPanel.add(topPanel, BorderLayout.CENTER);
    mainPanel.add(scrollPane, BorderLayout.SOUTH);

    chatArea.getDocument().addDocumentListener(new DocumentListener() {

        @Override/*from   w w w.  jav  a  2  s.  c  o m*/
        public void insertUpdate(DocumentEvent e) {
            updateLineCount();
        }

        @Override
        public void removeUpdate(DocumentEvent e) {
            updateLineCount();
        }

        @Override
        public void changedUpdate(DocumentEvent e) {
            updateLineCount();
        }

        private void updateLineCount() {
            int lineCount = chatArea.getLineCount();
            if (lineCount <= 4) {
                chatArea.setRows(lineCount);
                mainPanel.revalidate();
            }
        }
    });

    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.add(mainPanel);
    f.pack();
    f.setVisible(true);
}

---

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JTextField nameTextField = new JTextField();
    frame.add(nameTextField, BorderLayout.NORTH);
    frame.add(new JTextField(), BorderLayout.SOUTH);

    DocumentListener documentListener = new DocumentListener() {
        public void changedUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);//ww w.  j a  v a2s  . co  m
        }

        public void insertUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);
        }

        public void removeUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);
        }

        private void printIt(DocumentEvent documentEvent) {
            DocumentEvent.EventType type = documentEvent.getType();
            String typeString = null;
            if (type.equals(DocumentEvent.EventType.CHANGE)) {
                typeString = "Change";
            } else if (type.equals(DocumentEvent.EventType.INSERT)) {
                typeString = "Insert";
            } else if (type.equals(DocumentEvent.EventType.REMOVE)) {
                typeString = "Remove";
            }
            System.out.print("Type  :   " + typeString + " / ");
            Document source = documentEvent.getDocument();
            int length = source.getLength();
            try {
                System.out.println("Contents: " + source.getText(0, length));
            } catch (BadLocationException badLocationException) {
                System.out.println("Contents: Unknown");
            }
        }
    };
    nameTextField.getDocument().addDocumentListener(documentListener);

    frame.setSize(250, 100);
    frame.setVisible(true);
}

---

From source file:Main.java

public static void main(String[] args) {
    JFrame f = new JFrame();
    JPanel panel = new JPanel();
    JTextPane textPane = new JTextPane();
    JTextField tf = new JTextField("is");
    String word = "";
    Highlighter highlighter = new UnderlineHighlighter(null);

    textPane.setHighlighter(highlighter);
    textPane.setText("This is a test");
    panel.setLayout(new BorderLayout());
    panel.add(new JLabel("Enter word, then press ENTER key: "), "West");
    panel.add(tf, "Center");

    final WordSearcher searcher = new WordSearcher(textPane);
    tf.addActionListener(e -> {/*from  w  w  w . j a  v  a 2s. co m*/
        String w = tf.getText().trim();
        int offset = searcher.search(w);
        if (offset == -1) {
            return;
        }
        try {
            textPane.scrollRectToVisible(textPane.modelToView(offset));
        } catch (BadLocationException ex) {
        }

    });
    textPane.getDocument().addDocumentListener(new DocumentListener() {
        @Override
        public void insertUpdate(DocumentEvent evt) {
            searcher.search(word);
        }

        @Override
        public void removeUpdate(DocumentEvent evt) {
            searcher.search(word);
        }

        @Override
        public void changedUpdate(DocumentEvent evt) {
        }
    });
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.add(panel, "South");
    f.add(new JScrollPane(textPane), "Center");
    f.setSize(400, 400);
    f.setVisible(true);
}

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From source file:Main.java

public static void main(String args[]) {
    JFrame frame = new JFrame();
    final JFormattedTextField textField1 = new JFormattedTextField(new Float(10.01));
    textField1.setFormatterFactory(new AbstractFormatterFactory() {
        @Override/* ww w. jav a2s . co m*/
        public AbstractFormatter getFormatter(JFormattedTextField tf) {
            NumberFormat format = DecimalFormat.getInstance();
            format.setMinimumFractionDigits(2);
            format.setMaximumFractionDigits(2);
            format.setRoundingMode(RoundingMode.HALF_UP);
            InternationalFormatter formatter = new InternationalFormatter(format);
            formatter.setAllowsInvalid(false);
            formatter.setMinimum(0.0);
            formatter.setMaximum(1000.00);
            return formatter;
        }
    });
    Map attributes = (new Font("Serif", Font.BOLD, 16)).getAttributes();
    attributes.put(TextAttribute.STRIKETHROUGH, TextAttribute.STRIKETHROUGH_ON);
    final JFormattedTextField textField2 = new JFormattedTextField(new Float(10.01));
    textField2.setFormatterFactory(new AbstractFormatterFactory() {

        @Override
        public AbstractFormatter getFormatter(JFormattedTextField tf) {
            NumberFormat format = DecimalFormat.getInstance();
            format.setMinimumFractionDigits(2);
            format.setMaximumFractionDigits(2);
            format.setRoundingMode(RoundingMode.HALF_UP);
            InternationalFormatter formatter = new InternationalFormatter(format);
            formatter.setAllowsInvalid(false);
            formatter.setMinimum(0.0);
            formatter.setMaximum(1000.00);
            return formatter;
        }
    });
    textField2.getDocument().addDocumentListener(new DocumentListener() {

        @Override
        public void changedUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);
        }

        @Override
        public void insertUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);
        }

        @Override
        public void removeUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);
        }

        private void printIt(DocumentEvent documentEvent) {
            DocumentEvent.EventType type = documentEvent.getType();
            double t1a1 = (((Number) textField2.getValue()).doubleValue());
            if (t1a1 > 100) {
                textField2.setFont(new Font(attributes));
                textField2.setForeground(Color.red);
            } else {
                textField2.setFont(new Font("Serif", Font.BOLD, 16));
                textField2.setForeground(Color.black);
            }
        }
    });
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.add(textField1, BorderLayout.NORTH);
    frame.add(textField2, BorderLayout.SOUTH);
    frame.setVisible(true);
    frame.pack();
}

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From source file:UndoExample1.java

public static void main(String[] args) {
    try {//ww  w  . j ava  2  s  .co m
        UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
    } catch (Exception evt) {
    }

    JFrame f = new UndoExample1();
    f.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent evt) {
            System.exit(0);
        }
    });
    f.setSize(250, 300);
    f.setVisible(true);

    // Create and show a frame monitoring undoable edits
    JFrame undoMonitor = new JFrame("Undo Monitor");
    final JTextArea textArea = new JTextArea();
    textArea.setEditable(false);
    undoMonitor.getContentPane().add(new JScrollPane(textArea));
    undoMonitor.setBounds(f.getLocation().x + f.getSize().width, f.getLocation().y, 400, 200);
    undoMonitor.setVisible(true);

    pane.getDocument().addUndoableEditListener(new UndoableEditListener() {
        public void undoableEditHappened(UndoableEditEvent evt) {
            UndoableEdit edit = evt.getEdit();
            textArea.append(edit.getPresentationName() + "(" + edit.toString() + ")\n");
        }
    });

    // Create and show a frame monitoring document edits
    JFrame editMonitor = new JFrame("Edit Monitor");
    final JTextArea textArea2 = new JTextArea();
    textArea2.setEditable(false);
    editMonitor.getContentPane().add(new JScrollPane(textArea2));
    editMonitor.setBounds(undoMonitor.getLocation().x,
            undoMonitor.getLocation().y + undoMonitor.getSize().height, 400, 200);
    editMonitor.setVisible(true);

    pane.getDocument().addDocumentListener(new DocumentListener() {
        public void changedUpdate(DocumentEvent evt) {
            textArea2.append("Attribute change\n");
        }

        public void insertUpdate(DocumentEvent evt) {
            textArea2.append("Text insertion\n");
        }

        public void removeUpdate(DocumentEvent evt) {
            textArea2.append("Text removal\n");
        }
    });
}

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From source file:JTextFieldSample.java

public static void main(String args[]) {
    String title = (args.length == 0 ? "TextField Listener Example" : args[0]);
    JFrame frame = new JFrame(title);
    Container content = frame.getContentPane();

    JPanel namePanel = new JPanel(new BorderLayout());
    JLabel nameLabel = new JLabel("Name: ");
    nameLabel.setDisplayedMnemonic(KeyEvent.VK_N);
    JTextField nameTextField = new JTextField();
    nameLabel.setLabelFor(nameTextField);
    namePanel.add(nameLabel, BorderLayout.WEST);
    namePanel.add(nameTextField, BorderLayout.CENTER);
    content.add(namePanel, BorderLayout.NORTH);

    JPanel cityPanel = new JPanel(new BorderLayout());
    JLabel cityLabel = new JLabel("City: ");
    cityLabel.setDisplayedMnemonic(KeyEvent.VK_C);
    JTextField cityTextField = new JTextField();
    cityLabel.setLabelFor(cityTextField);
    cityPanel.add(cityLabel, BorderLayout.WEST);
    cityPanel.add(cityTextField, BorderLayout.CENTER);
    content.add(cityPanel, BorderLayout.SOUTH);

    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            System.out.println("Command: " + actionEvent.getActionCommand());
        }/*from w  ww.j a  v a  2  s  .co m*/
    };
    nameTextField.setActionCommand("Yo");
    nameTextField.addActionListener(actionListener);
    cityTextField.addActionListener(actionListener);

    KeyListener keyListener = new KeyListener() {
        public void keyPressed(KeyEvent keyEvent) {
            printIt("Pressed", keyEvent);
        }

        public void keyReleased(KeyEvent keyEvent) {
            printIt("Released", keyEvent);
        }

        public void keyTyped(KeyEvent keyEvent) {
            printIt("Typed", keyEvent);
        }

        private void printIt(String title, KeyEvent keyEvent) {
            int keyCode = keyEvent.getKeyCode();
            String keyText = KeyEvent.getKeyText(keyCode);
            System.out.println(title + " : " + keyText + " / " + keyEvent.getKeyChar());
        }
    };
    nameTextField.addKeyListener(keyListener);
    cityTextField.addKeyListener(keyListener);

    InputVerifier verifier = new InputVerifier() {
        public boolean verify(JComponent input) {
            final JTextComponent source = (JTextComponent) input;
            String text = source.getText();
            if ((text.length() != 0) && !(text.equals("Exit"))) {
                Runnable runnable = new Runnable() {
                    public void run() {
                        JOptionPane.showMessageDialog(source, "Can't leave.", "Error Dialog",
                                JOptionPane.ERROR_MESSAGE);
                    }
                };
                SwingUtilities.invokeLater(runnable);
                return false;
            } else {
                return true;
            }
        }
    };
    nameTextField.setInputVerifier(verifier);
    cityTextField.setInputVerifier(verifier);

    DocumentListener documentListener = new DocumentListener() {
        public void changedUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);
        }

        public void insertUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);
        }

        public void removeUpdate(DocumentEvent documentEvent) {
            printIt(documentEvent);
        }

        private void printIt(DocumentEvent documentEvent) {
            DocumentEvent.EventType type = documentEvent.getType();
            String typeString = null;
            if (type.equals(DocumentEvent.EventType.CHANGE)) {
                typeString = "Change";
            } else if (type.equals(DocumentEvent.EventType.INSERT)) {
                typeString = "Insert";
            } else if (type.equals(DocumentEvent.EventType.REMOVE)) {
                typeString = "Remove";
            }
            System.out.print("Type  :   " + typeString + " / ");
            Document source = documentEvent.getDocument();
            int length = source.getLength();
            try {
                System.out.println("Contents: " + source.getText(0, length));
            } catch (BadLocationException badLocationException) {
                System.out.println("Contents: Unknown");
            }
        }
    };
    nameTextField.getDocument().addDocumentListener(documentListener);
    cityTextField.getDocument().addDocumentListener(documentListener);

    frame.setSize(250, 150);
    frame.setVisible(true);
}

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From source file:UndoExample5.java

public static void main(String[] args) {
    try {/*from www.j av  a2  s.co m*/
        UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
    } catch (Exception evt) {
    }

    JFrame f = new UndoExample5();
    f.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent evt) {
            System.exit(0);
        }
    });
    f.setSize(250, 300);
    f.setVisible(true);

    // Create and show a frame monitoring undoable edits
    JFrame undoMonitor = new JFrame("Undo Monitor");
    final JTextArea textArea = new JTextArea();
    textArea.setEditable(false);
    undoMonitor.getContentPane().add(new JScrollPane(textArea));
    undoMonitor.setBounds(f.getLocation().x + f.getSize().width, f.getLocation().y, 400, 200);
    undoMonitor.setVisible(true);

    pane.getDocument().addUndoableEditListener(new UndoableEditListener() {
        public void undoableEditHappened(UndoableEditEvent evt) {
            UndoableEdit edit = evt.getEdit();
            textArea.append(edit.getPresentationName() + "(" + edit.toString() + ")\n");
        }
    });

    // Create and show a frame monitoring document edits
    JFrame editMonitor = new JFrame("Edit Monitor");
    final JTextArea textArea2 = new JTextArea();
    textArea2.setEditable(false);
    editMonitor.getContentPane().add(new JScrollPane(textArea2));
    editMonitor.setBounds(undoMonitor.getLocation().x,
            undoMonitor.getLocation().y + undoMonitor.getSize().height, 400, 200);
    editMonitor.setVisible(true);

    pane.getDocument().addDocumentListener(new DocumentListener() {
        public void changedUpdate(DocumentEvent evt) {
            textArea2.append("Attribute change\n");
        }

        public void insertUpdate(DocumentEvent evt) {
            textArea2.append("Text insertion\n");
        }

        public void removeUpdate(DocumentEvent evt) {
            textArea2.append("Text removal\n");
        }
    });
}

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