Example usage for javax.swing JTextArea getDocument

Introduction

In this page you can find the example usage for javax.swing JTextArea getDocument.

Prototype

public Document getDocument() 

Source Link

Document

Fetches the model associated with the editor.

Usage

From source file:ListenerSample.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Offset Example");
    Container content = frame.getContentPane();
    JTextArea textArea = new JTextArea();
    JScrollPane scrollPane = new JScrollPane(textArea);
    final Document document = textArea.getDocument();
    document.addDocumentListener(new MyListener());

    content.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(250, 150);/*from  w w w.  ja  v a2  s. c  om*/
    frame.setVisible(true);
}

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From source file:MainClass.java

public static void main(final String args[]) {
    JFrame frame = new JFrame("Undo Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JTextArea textArea = new JTextArea();
    JScrollPane scrollPane = new JScrollPane(textArea);

    UndoManager manager = new UndoManager();
    textArea.getDocument().addUndoableEditListener(manager);

    JToolBar toolbar = new JToolBar();
    JButton undoButton = new JButton(
            new UndoAction(manager, (String) UIManager.get("AbstractUndoableEdit.undoText")));
    toolbar.add(undoButton);/*from ww  w  . j  a  va 2s  .  c o m*/

    Container content = frame.getContentPane();
    content.add(toolbar, BorderLayout.NORTH);
    content.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);

}

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From source file:TextAreaElements.java

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

    JFrame f = new JFrame("Text Area Elements");
    JTextArea ta = new JTextArea(5, 32);
    ta.setText("That's one small step for man...\nOne giant leap for mankind.");
    f.getContentPane().add(ta);
    f.pack();
    f.setVisible(true);

    ((AbstractDocument) ta.getDocument()).dump(System.out);
}

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From source file:MainClass.java

public static void main(final String args[]) {
    JFrame frame = new JFrame("Undo Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JTextArea textArea = new JTextArea();
    JScrollPane scrollPane = new JScrollPane(textArea);

    UndoManager manager = new UndoManager();
    textArea.getDocument().addUndoableEditListener(manager);

    JToolBar toolbar = new JToolBar();
    JButton undoButton = new JButton(
            new UndoAction(manager, (String) UIManager.get("AbstractUndoableEdit.undoText")));
    toolbar.add(undoButton);/*from   w  ww  .j  av  a 2 s.  co m*/

    JButton redoButton = new JButton(
            new RedoAction(manager, (String) UIManager.get("AbstractUndoableEdit.redoText")));
    toolbar.add(redoButton);

    Container content = frame.getContentPane();
    content.add(toolbar, BorderLayout.NORTH);
    content.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);

}

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From source file:UndoManagerHelper.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Undo Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JTextArea textArea = new JTextArea();
    JScrollPane scrollPane = new JScrollPane(textArea);

    UndoManager manager = new UndoManager();
    textArea.getDocument().addUndoableEditListener(manager);

    JToolBar toolbar = new JToolBar();
    JButton undoButton = new JButton(UndoManagerHelper.getUndoAction(manager));
    toolbar.add(undoButton);/*from w  w w . j a  va  2s  . c  om*/
    JButton redoButton = new JButton(UndoManagerHelper.getRedoAction(manager));
    toolbar.add(redoButton);
    frame.add(toolbar, BorderLayout.NORTH);
    frame.add(scrollPane, BorderLayout.CENTER);
    frame.setSize(300, 150);
    frame.setVisible(true);
}

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From source file:Main.java

public static void main(String[] args) {
    JFrame f = new JFrame();
    JTextArea ta = new JTextArea(5, 32);
    ta.setText("That's one small step for man...\nOne giant leap for mankind.");
    ta.setLineWrap(true);/*from w  w  w . j  av a 2  s  .c o m*/
    ta.setWrapStyleWord(true);

    f.getContentPane().add(ta);
    f.setSize(100, 100);
    f.setVisible(true);

    ((AbstractDocument) ta.getDocument()).dump(System.out);
}

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From source file:ElementSample.java

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

    final JTextArea textArea = new JTextArea();
    JScrollPane scrollPane = new JScrollPane(textArea);

    JButton button = new JButton("Show Elements");
    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            Document document = textArea.getDocument();
            ElementIterator iterator = new ElementIterator(document);
            Element element = iterator.first();
            while (element != null) {
                System.out.println(element.getStartOffset());
                element = iterator.next();
            }/*from  w w  w  .  j a va 2s  . co m*/
        }
    };
    button.addActionListener(actionListener);

    frame.add(scrollPane, BorderLayout.CENTER);
    frame.add(button, BorderLayout.SOUTH);

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

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From source file:ElementSample.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Element Example");
    Container content = frame.getContentPane();

    final JTextArea textArea = new JTextArea();
    JScrollPane scrollPane = new JScrollPane(textArea);

    JButton button = new JButton("Show Elements");
    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            Document document = textArea.getDocument();
            ElementIterator iterator = new ElementIterator(document);
            Element element = iterator.first();
            while (element != null) {
                System.out.println(element.getStartOffset());
                element = iterator.next();
            }// w  ww .  j a  v a2 s.  c  om
        }
    };
    button.addActionListener(actionListener);

    content.add(scrollPane, BorderLayout.CENTER);
    content.add(button, BorderLayout.SOUTH);

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

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From source file:MainClass.java

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

    final JTextArea textArea = new JTextArea();
    JScrollPane scrollPane = new JScrollPane(textArea);

    JButton button = new JButton("Show Elements");
    ActionListener actionListener = new ActionListener() {
        public void actionPerformed(ActionEvent actionEvent) {
            Document document = textArea.getDocument();
            ElementIterator iterator = new ElementIterator(document);
            Element element = iterator.first();
            while (element != null) {
                System.out.println(element.getStartOffset());
                element = iterator.next();
            }/*from ww w  . ja va  2  s.c  o  m*/
        }
    };
    button.addActionListener(actionListener);

    frame.add(scrollPane, BorderLayout.CENTER);
    frame.add(button, BorderLayout.SOUTH);

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

}

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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 .  j av  a  2  s  . co 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);
}

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