Fix error SWT bot test 2

Author: tuanvtdeptre199

tmf/org.eclipse.tracecompass.tmf.ui.swtbot.tests/src/org/eclipse/tracecompass/tmf/ui/swtbot/tests/project/AddProjectNatureTest.java

@@ -249,8 +249,38 @@ private static void toggleFilters(boolean checked) {
             item.toggleCheck();
         }
 
-        // Wait briefly for UI to process changes and enable the button
-		fBot.sleep(500);
-        shell.bot().button(APPLY_BUTTON).click();
+        // Wait for UI to process changes and for the Apply button to be enabled
+    // Use ConditionHelpers or implement a more robust wait
+    SWTBot dialogBot = shell.bot();
+    try {
+        // Wait for the Apply button to be enabled (up to 5 seconds)
+        fBot.waitUntil(org.eclipse.swtbot.swt.finder.waits.Conditions.widgetIsEnabled(
+            dialogBot.button(APPLY_BUTTON)), 5000);
+    } catch (Exception e) {
+        // If button is not found or doesn't enable, try alternative approaches
+        // First, wait a bit more for UI to settle
+        fBot.sleep(1000);
+        try {
+            dialogBot.button(APPLY_BUTTON).click();
+        } catch (WidgetNotFoundException e2) {
+            // If Apply button is still not found, try OK button as fallback
+            try {
+                dialogBot.button("OK").click();
+                return;
+            } catch (WidgetNotFoundException e3) {
+                // Log available buttons for debugging
+                org.eclipse.swtbot.swt.finder.widgets.SWTBotButton[] buttons = dialogBot.buttons();
+                StringBuilder availableButtons = new StringBuilder("Available buttons: ");
+                for (org.eclipse.swtbot.swt.finder.widgets.SWTBotButton btn : buttons) {
+                    availableButtons.append("[").append(btn.getText()).append("] ");
+                }
+                throw new WidgetNotFoundException(availableButtons.toString(), e3);
+            }
+        }
+        return;
+    }
+
+    // Button is enabled, click it
+    dialogBot.button(APPLY_BUTTON).click();
     }
 }