getLocationOnScreen() to allow null response when host.peer is null

BobHanson · BobHanson · commit f55869987070 · 2020-01-20T06:08:34.000-06:00
diff --git a/sources/net.sf.j2s.java.core/src/java/awt/Component.java b/sources/net.sf.j2s.java.core/src/java/awt/Component.java
@@ -1867,17 +1867,21 @@ public Point getLocationOnScreen() {
 	 */
 	final Point getLocationOnScreen_NoTreeLock() {
 		if (isShowing()) {
-			if (isLightweight()) {// peer instanceof LightweightPeer) { // SwingJS will return FALSE
+			if (isLightweight()) {
 				// lightweight component location needs to be translated
 				// relative to a native component.
 				Container host = getNativeContainer();
+				if (host.peer == null)
+					return null;
 				Point pt = host.peer.getLocationOnScreen();
 				for (Component c = this; c != host; c = c.getParent()) {
 					pt.x += c.x;
 					pt.y += c.y;
 				}
 				return pt;
 			} else {
+				if (peer == null)
+					return null;
 				Point pt = peer.getLocationOnScreen();
 				return pt;
 			}
