public static void setPositionRelativeToParent(
Window w, Component parent, int hOffset, int vOffset) {
try {
Point p = parent.getLocationOnScreen();
int x = (int) p.getX() + hOffset;
int y = (int) p.getY() + vOffset;
w.setLocation(x, y);
w.pack();
} catch (Throwable t) {
}
}
@Override
public Dimension getPreferredSize() {
final Component focusOwner =
KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusOwner();
Point p = null;
if (focusOwner != null && focusOwner.isShowing()) {
p = focusOwner.getLocationOnScreen();
}
return computeNotBiggerDimension(super.getPreferredSize().getSize(), p);
}
public static Point getRelLocation(Component c) {
if (c == null || !c.isShowing()) {
return new Point(0, 0);
}
Container parent = getRootContainer(c);
if ((parent != null) && parent.isShowing()) {
Point p1 = c.getLocationOnScreen();
Point p2 = parent.getLocationOnScreen();
return new Point(p1.x - p2.x, p1.y - p2.y);
}
return new Point(0, 0);
}
protected void customizePopup(BasicComboPopup popup) {
scrollPane = getScrollPane(popup);
if (popupWider) popupWider(popup);
checkHorizontalScrollBar(popup);
// For some reason in JDK7 the popup will not display at its preferred
// width unless its location has been changed from its default
// (ie. for normal "pop down" shift the popup and reset)
Component comboBox = popup.getInvoker();
Point location = comboBox.getLocationOnScreen();
if (popupAbove) {
int height = popup.getPreferredSize().height;
popup.setLocation(location.x, location.y - height);
} else {
int height = comboBox.getPreferredSize().height;
popup.setLocation(location.x, location.y + height - 1);
popup.setLocation(location.x, location.y + height);
}
}