8296083: javax/swing/JTree/6263446/bug6263446.java fails intermittently on a VM

Reviewed-by: goetz
Backport-of: dd9aa7272d04b49dd5cbf3ff9f9091c7d63d68ae

Author: Victor Rudometov

test/jdk/javax/swing/JTree/6263446/bug6263446.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2022, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -38,7 +38,7 @@
 
 public class bug6263446 {
 
-    private static final String FIRST = "AAAAAAAAAAA";
+    private static final String FIRST = "AAAAA";
     private static final String SECOND = "BB";
     private static final String ALL = FIRST + " " + SECOND;
     private static JTree tree;
@@ -62,59 +62,75 @@ public void run() {
         try {
             Point point = getClickPoint();
             robot.mouseMove(point.x, point.y);
+            robot.waitForIdle();
 
             // click count 3
             click(1);
+            robot.waitForIdle();
             assertNotEditing();
 
             click(2);
+            robot.waitForIdle();
             assertNotEditing();
 
             click(3);
+            robot.waitForIdle();
             assertEditing();
             cancelCellEditing();
             assertNotEditing();
 
             click(4);
+            robot.waitForIdle();
             checkSelectedText(FIRST);
 
             click(5);
+            robot.waitForIdle();
             checkSelectedText(ALL);
 
             // click count 4
             setClickCountToStart(4);
+            robot.waitForIdle();
 
             click(1);
+            robot.waitForIdle();
             assertNotEditing();
 
             click(2);
+            robot.waitForIdle();
             assertNotEditing();
 
             click(3);
+            robot.waitForIdle();
             assertNotEditing();
 
             click(4);
+            robot.waitForIdle();
             assertEditing();
             cancelCellEditing();
             assertNotEditing();
 
             click(5);
+            robot.waitForIdle();
             checkSelectedText(FIRST);
 
             click(6);
+            robot.waitForIdle();
             checkSelectedText(ALL);
 
             // start path editing
             startPathEditing();
             assertEditing();
 
             click(1);
+            robot.waitForIdle();
             checkSelection(null);
 
             click(2);
+            robot.waitForIdle();
             checkSelection(FIRST);
 
             click(3);
+            robot.waitForIdle();
             checkSelection(ALL);
         } finally {
             if (frame != null) {
@@ -128,7 +144,6 @@ private static void click(int times) {
         for (int i = 0; i < times; i++) {
             robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
             robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
-            robot.waitForIdle();
         }
     }
 
@@ -141,7 +156,7 @@ private static Point getClickPoint() throws Exception {
             public void run() {
                 Rectangle rect = tree.getRowBounds(0);
                 // UPDATE !!!
-                Point p = new Point(rect.x + rect.width / 2, rect.y + 2);
+                Point p = new Point(rect.x + rect.width/2, rect.y + rect.height/2);
                 SwingUtilities.convertPointToScreen(p, tree);
                 result[0] = p;
 
@@ -166,9 +181,11 @@ private static void createAndShowGUI() {
 
 
         frame.getContentPane().add(tree);
+        frame.setAlwaysOnTop(true);
         frame.pack();
         frame.setLocationRelativeTo(null);
         frame.setVisible(true);
+        frame.toFront();
     }
 
     private static void setClickCountToStart(final int clicks) throws Exception {
@@ -183,6 +200,7 @@ public void run() {
                     field.setAccessible(true);
                     DefaultCellEditor ce = (DefaultCellEditor) field.get(editor);
                     ce.setClickCountToStart(clicks);
+
                 } catch (IllegalAccessException e) {
                     throw new RuntimeException(e);
                 } catch (NoSuchFieldException e) {
@@ -248,7 +266,9 @@ public void run() {
     private static void checkSelectedText(String sel) throws Exception {
         assertEditing();
         checkSelection(sel);
+        robot.waitForIdle();
         cancelCellEditing();
+        robot.waitForIdle();
         assertNotEditing();
     }