private void setupDragMode(JComponent f) {
JDesktopPane p = getDesktopPane(f);
Container parent = f.getParent();
dragMode = DEFAULT_DRAG_MODE;
if (p != null) {
String mode = (String) p.getClientProperty("JDesktopPane.dragMode");
Window window = SwingUtilities.getWindowAncestor(f);
if (window != null && !AWTUtilities.isWindowOpaque(window)) {
dragMode = DEFAULT_DRAG_MODE;
} else if (mode != null && mode.equals("outline")) {
dragMode = OUTLINE_DRAG_MODE;
} else if (mode != null
&& mode.equals("faster")
&& f instanceof JInternalFrame
&& ((JInternalFrame) f).isOpaque()
&& (parent == null || parent.isOpaque())) {
dragMode = FASTER_DRAG_MODE;
} else {
if (p.getDragMode() == JDesktopPane.OUTLINE_DRAG_MODE) {
dragMode = OUTLINE_DRAG_MODE;
} else if (p.getDragMode() == JDesktopPane.LIVE_DRAG_MODE
&& f instanceof JInternalFrame
&& ((JInternalFrame) f).isOpaque()) {
dragMode = FASTER_DRAG_MODE;
} else {
dragMode = DEFAULT_DRAG_MODE;
}
}
}
}
