private void maybeShowFor(Component c, MouseEvent me) {
if (!(c instanceof JComponent)) return;
JComponent comp = (JComponent) c;
Window wnd = SwingUtilities.getWindowAncestor(comp);
if (wnd == null) return;
if (!wnd.isActive()) {
if (JBPopupFactory.getInstance().isChildPopupFocused(wnd)) return;
}
String tooltipText = comp.getToolTipText(me);
if (tooltipText == null || tooltipText.trim().isEmpty()) return;
boolean centerDefault =
Boolean.TRUE.equals(comp.getClientProperty(UIUtil.CENTER_TOOLTIP_DEFAULT));
boolean centerStrict =
Boolean.TRUE.equals(comp.getClientProperty(UIUtil.CENTER_TOOLTIP_STRICT));
int shift = centerStrict ? 0 : centerDefault ? 4 : 0;
// Balloon may appear exactly above useful content, such behavior is rather annoying.
if (c instanceof JTree) {
TreePath path = ((JTree) c).getClosestPathForLocation(me.getX(), me.getY());
if (path != null) {
Rectangle pathBounds = ((JTree) c).getPathBounds(path);
if (pathBounds != null && pathBounds.y + 4 < me.getY()) {
shift += me.getY() - pathBounds.y - 4;
}
}
}
queueShow(comp, me, centerStrict || centerDefault, shift, -shift, -shift);
}
public static void center(Window w) {
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension windowSize = w.getSize();
w.setLocation(
(screenSize.width - windowSize.width) / 2, (screenSize.height - windowSize.height) / 2);
}