Example usage for javax.swing JScrollPane JScrollPane

Introduction

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

Prototype

public JScrollPane(Component view)

Source Link

Document

Creates a JScrollPane that displays the contents of the specified component, where both horizontal and vertical scrollbars appear whenever the component's contents are larger than the view.

Usage

From source file:Main.java

public static void main(String[] args) {
    int ROWS = 100;
    JPanel content = new JPanel();
    content.setLayout(new BoxLayout(content, BoxLayout.Y_AXIS));
    content.add(new JLabel("Thanks for helping out. Use tab to move around."));
    for (int i = 0; i < ROWS; i++) {
        JTextField field = new JTextField("" + i);
        field.setName("field#" + i);
        content.add(field);//from   w  ww .  j a va2  s  . c  o m
    }
    KeyboardFocusManager.getCurrentKeyboardFocusManager().addPropertyChangeListener("focusOwner",
            new PropertyChangeListener() {
                @Override
                public void propertyChange(PropertyChangeEvent evt) {
                    if (!(evt.getNewValue() instanceof JComponent)) {
                        return;
                    }
                    JViewport viewport = (JViewport) content.getParent();
                    JComponent focused = (JComponent) evt.getNewValue();
                    if (content.isAncestorOf(focused)) {
                        Rectangle rect = focused.getBounds();
                        Rectangle r2 = viewport.getVisibleRect();
                        content.scrollRectToVisible(
                                new Rectangle(rect.x, rect.y, (int) r2.getWidth(), (int) r2.getHeight()));
                    }
                }
            });
    JFrame window = new JFrame();
    window.setContentPane(new JScrollPane(content));
    window.setSize(200, 200);
    window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    window.setVisible(true);
}

From source file:Main.java

public static void main(String[] argv) {
    JTextComponent textcomp = new JTextArea();
    final UndoManager undo = new UndoManager();
    Document doc = textcomp.getDocument();

    doc.addUndoableEditListener(new UndoableEditListener() {
        public void undoableEditHappened(UndoableEditEvent evt) {
            undo.addEdit(evt.getEdit());
        }/* w w  w .j a v a  2  s. c o m*/
    });

    textcomp.getActionMap().put("Undo", new AbstractAction("Undo") {
        public void actionPerformed(ActionEvent evt) {
            try {
                if (undo.canUndo()) {
                    undo.undo();
                }
            } catch (CannotUndoException e) {
            }
        }
    });

    textcomp.getInputMap().put(KeyStroke.getKeyStroke("control Z"), "Undo");

    textcomp.getActionMap().put("Redo", new AbstractAction("Redo") {
        public void actionPerformed(ActionEvent evt) {
            try {
                if (undo.canRedo()) {
                    undo.redo();
                }
            } catch (CannotRedoException e) {
            }
        }
    });

    textcomp.getInputMap().put(KeyStroke.getKeyStroke("control Y"), "Redo");

    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.add(new JScrollPane(textcomp));
    frame.setSize(380, 320);
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);

}

From source file:TreeTester.java

public static void main(String args[]) {
    JFrame f = new JFrame("Tree Dragging Tester");
    DndTree tree1 = new DndTree();
    JScrollPane leftPane = new JScrollPane(tree1);
    DndTree tree2 = new DndTree();
    JScrollPane rightPane = new JScrollPane(tree2);
    JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, leftPane, rightPane);
    f.getContentPane().add(splitPane, BorderLayout.CENTER);
    f.setSize(300, 200);//from   w w  w .  jav  a2  s  .  c  o  m
    f.setVisible(true);
}