Try make this more robust in slow environments

...where the previous .uno:PrintPreview request has not yet been processed, the
same way it had been made more robust for ScAccessiblePageHeader.java in
5b5c52a3 "Try make this more robust in slow
environments" plus b5dd2b42 "Also cope with
intermittend DisposedExceptions."

Change-Id: I4d429a96b7b595776aaf3fa20e3e03b00ca886bc

qadevOOo/tests/java/mod/_sc/AccessibleEditableTextPara_PreviewCell.java

@@ -38,6 +38,7 @@ import com.sun.star.frame.XController;
 import com.sun.star.frame.XDispatch;
 import com.sun.star.frame.XDispatchProvider;
 import com.sun.star.frame.XModel;
+import com.sun.star.lang.DisposedException;
 import com.sun.star.lang.XComponent;
 import com.sun.star.lang.XMultiServiceFactory;
 import com.sun.star.sheet.XSpreadsheet;
@@ -86,7 +87,6 @@ public class AccessibleEditableTextPara_PreviewCell extends TestCase {
      */
     protected synchronized TestEnvironment createTestEnvironment(TestParameters Param, PrintWriter log) {
 
-        XAccessibleContext oObj = null;
         XCell xCell = null;
 
         try {
@@ -136,19 +136,38 @@ public class AccessibleEditableTextPara_PreviewCell extends TestCase {
             throw new StatusException(Status.failed("Couldn't change mode"));
         }
 
-        shortWait();
-
-
-        XWindow xWindow = AccessibilityTools.getCurrentWindow( (XMultiServiceFactory) Param.getMSF(), xModel);
-        XAccessible xRoot = AccessibilityTools.getAccessibleObject(xWindow);
-        //AccessibilityTools.printAccessibleTree(log,xRoot);
-        AccessibilityTools.getAccessibleObjectForRole(xRoot, AccessibleRole.TABLE_CELL,true);
-
-        xRoot = AccessibilityTools.SearchedAccessible;
-
-        //AccessibilityTools.printAccessibleTree(log,xRoot);
-
-        oObj = AccessibilityTools.getAccessibleObjectForRole(xRoot,AccessibleRole.PARAGRAPH);
+        XAccessibleContext oObj = null;
+        for (int i = 0;; ++i) {
+            try {
+                Thread.sleep(500);
+            } catch (InterruptedException e) {
+                throw new RuntimeException(e);
+            }
+            try {
+                XAccessible xRoot = AccessibilityTools.getAccessibleObject(
+                    AccessibilityTools.getCurrentWindow(
+                        (XMultiServiceFactory) Param.getMSF(), xModel));
+                if (xRoot != null) {
+                    AccessibilityTools.getAccessibleObjectForRole(
+                        xRoot, AccessibleRole.TABLE_CELL, true);
+                    xRoot = AccessibilityTools.SearchedAccessible;
+                    if (xRoot != null) {
+                        oObj = AccessibilityTools.getAccessibleObjectForRole(
+                            xRoot, AccessibleRole.PARAGRAPH);
+                        if (oObj != null) {
+                            break;
+                        }
+                    }
+                }
+            } catch (DisposedException e) {
+                log.println("Ignoring DisposedException");
+            }
+            if (i == 20) { // give up after 10 sec
+                throw new RuntimeException(
+                    "Couldn't get AccessibleRoot.HEADER object");
+            }
+            log.println("No TABLE_CELL/PARAGRAPH found yet, retrying");
+        }
 
         log.println("ImplementationName " + utils.getImplName(oObj));
         log.println("AccessibleName " + oObj.getAccessibleName());
@@ -169,12 +188,4 @@ public class AccessibleEditableTextPara_PreviewCell extends TestCase {
 
         return tEnv;
     }
-
-    protected void shortWait() {
-        try {
-            Thread.sleep(1000) ;
-        } catch (InterruptedException e) {
-            System.out.println("While waiting :" + e);
-        }
-    }
 }