Java Utililty Methods JScrollPane

List of utility methods to do JScrollPane

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Description

The list of methods to do JScrollPane are organized into topic(s).

Method

JScrollPanefindScrollPane(Component component)
find Scroll Pane 
if (component instanceof JScrollPane)
    return (JScrollPane) component;
if (component instanceof Container) {
    Container c = (Container) component;
    for (int i = 0; i < c.getComponentCount(); i++) {
        JScrollPane result = findScrollPane(c.getComponent(i));
        if (result != null)
            return result;
...
JScrollPanegetContainingScroll(Component comp)
Returns the scrolpane where the provided component is contained. 
JScrollPane scroll = null;
Container parent = comp.getParent();
while (scroll == null && parent != null) {
    if (parent instanceof JScrollPane) {
        scroll = (JScrollPane) parent;
    } else {
        parent = parent.getParent();
return scroll;
JScrollPanegetMessageScrollPane(String message)
get Message Scroll Pane 
JTextArea ta = new JTextArea(message);
ta.setBorder(new EmptyBorder(0, 0, 0, 0));
ta.setLineWrap(true);
ta.setWrapStyleWord(true);
ta.setCaretPosition(0);
ta.setEditable(false);
JScrollPane sp = new JScrollPane(ta);
sp.setBorder(new EmptyBorder(5, 5, 5, 5));
...
JFramegetNoScrollPaletteWindow(Component gui, String windowName, ComponentListener cl)
Get a layer's associated palette as a top-level window 
JPanel pane = new JPanel();
pane.setLayout(new BoxLayout(pane, BoxLayout.Y_AXIS));
pane.setAlignmentX(Component.CENTER_ALIGNMENT);
pane.setAlignmentY(Component.BOTTOM_ALIGNMENT);
pane.add(gui);
JFrame paletteWindow = new JFrame(windowName);
paletteWindow.addComponentListener(cl);
paletteWindow.getContentPane().add(pane);
...
JScrollPanegetScrollableMessage(String msg)
get Scrollable Message 
JTextArea textArea = new JTextArea(msg);
textArea.setLineWrap(true);
textArea.setWrapStyleWord(true);
textArea.setEditable(false);
textArea.setMargin(new Insets(5, 5, 5, 5));
textArea.setFont(new JTextField().getFont()); 
JScrollPane scrollPane = new JScrollPane();
scrollPane.setPreferredSize(new Dimension(700, 150));
...
intgetScrollBarWidth(BasicComboPopup popup, JScrollPane scrollPane)
get Scroll Bar Width 
return 0;
RectanglegetScrollPaneViewportSize(JScrollPane panel)
get Scroll Pane Viewport Size 
Rectangle viewRect = panel.getViewportBorderBounds();
JScrollBar vbar = panel.getVerticalScrollBar();
if (vbar.isVisible()) {
    viewRect.width = viewRect.width + vbar.getWidth();
JScrollBar hbar = panel.getHorizontalScrollBar();
if (hbar.isVisible()) {
    viewRect.height = viewRect.height + hbar.getHeight();
...
booleanhasParentScrollPane(JComponent component)
has Parent Scroll Pane 
return component.getParent() != null && component.getParent() instanceof JViewport
        && component.getParent().getParent() instanceof JScrollPane;
GridBagConstraintsinitScrollPane(JScrollPane scrollPane)
init Scroll Pane 
scrollPane.setLayout(new ScrollPaneLayout());
scrollPane.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
GridBagConstraints gb = new GridBagConstraints();
gb.gridx = 0;
gb.gridy = 0;
gb.insets = new Insets(2, 2, 2, 2);
return gb;
booleanisHorizontalScrollBarHiddenAlways(JScrollPane pane)
is Horizontal Scroll Bar Hidden Always 
return (pane != null) && (pane.getHorizontalScrollBarPolicy() == JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);