Java Utililty Methods Swing Focus

List of utility methods to do Swing Focus

  1. HOME
  2. Java
  3. S
  4. Swing Focus

Description

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

Method

booleanisFocused(Component component, boolean recoursive)
is Focused 
if (component.isFocusOwner())
    return true;
if (recoursive && component instanceof JComponent) {
    JComponent parentComponent = (JComponent) component;
    for (Component childComponent : parentComponent.getComponents()) {
        if (isFocused(childComponent, recoursive)) {
            return true;
return false;
booleanisParentWindowFocused(Component component)
is Parent Window Focused 
Window window = SwingUtilities.getWindowAncestor(component);
return window != null && window.isFocused();
booleanisParentWindowFocused(Component component)
true if the given Component 's parent Window is currently active (focused). 
Window window = SwingUtilities.getWindowAncestor(component);
return window != null && window.isFocused();
booleanisParentWindowFocused(Component component)
true if the given Component 's has a parent Window (i.e. 
final Window window = SwingUtilities.getWindowAncestor(component);
return window != null && window.isFocused();
voidpaintFocusRect(Graphics g, Rectangle r)
paint Focus Rect 
BasicGraphicsUtils.drawDashedRect(g, r.x - 1, r.y, r.width + 2, r.height);
voidpostponeFocus(final Component target)
Setta il focus su form modali 
SwingUtilities.invokeLater(new Runnable() {
    public void run() {
        target.dispatchEvent(new FocusEvent(target, FocusEvent.FOCUS_GAINED));
});
voidremoveFocus(JComponent component)
Makes sure the component won't receive the focus. 
component.setRequestFocusEnabled(false);
component.setFocusable(false);
voidrequestComponentFocus(final Window win, final JComponent comp)
Registers a (temporary) WindowListener with the window that will activate the passed component as soon as the windowActivated() event is received. 
win.addWindowListener(new WindowAdapter() {
    @Override
    public void windowActivated(WindowEvent evt) {
        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                comp.requestFocus();
        });
        win.removeWindowListener(this);
});
voidrequestComponentFocus(final Window win, final JComponent comp)
Registers a (temporary) WindowListener with the window that will activate the passed component as soon as the windowActivated() event is received. 
win.addWindowListener(new WindowAdapter() {
    @Override
    public void windowActivated(WindowEvent evt) {
        EventQueue.invokeLater(comp::requestFocus);
        win.removeWindowListener(this);
});
voidrequestFocus(final JComponent comp)
Schedules a requestFocus() call in the AWT event queue. 
if (comp == null)
    return;
EventQueue.invokeLater(new Runnable() {
    @Override
    public void run() {
        comp.requestFocus();
});
...