Bug 356829. Do not expose table layout-guess=true when table is inside editable area. r=ginn.chen

accessible/src/base/nsDocAccessible.cpp

@@ -228,6 +228,9 @@ nsDocAccessible::GetState(PRUint32 *aState, PRUint32 *aExtraState)
   if (!editor) {
     *aState |= nsIAccessibleStates::STATE_READONLY;
   }
+  else if (aExtraState) {
+    *aExtraState |= nsIAccessibleStates::EXT_STATE_EDITABLE;
+  }
 
   return NS_OK;
 }

accessible/src/html/nsHTMLTableAccessible.cpp

@@ -785,6 +785,15 @@ NS_IMETHODIMP nsHTMLTableAccessible::IsProbablyForLayout(PRBool *aIsProbablyForL
     return NS_ERROR_FAILURE; // Table shut down
   }
 
+  nsCOMPtr<nsIAccessible> docAccessible = do_QueryInterface(nsCOMPtr<nsIAccessibleDocument>(GetDocAccessible()));
+  if (docAccessible) {
+    PRUint32 state, extState;
+    docAccessible->GetFinalState(&state, &extState);
+    if (extState & nsIAccessibleStates::EXT_STATE_EDITABLE) {  // Need to see all elements while document is being edited
+      RETURN_LAYOUT_ANSWER(PR_FALSE, "In editable document");
+    }
+  }
+
   // Check role and role attribute
   PRBool hasNonTableRole = (Role(this) != nsIAccessibleRole::ROLE_TABLE);
   if (hasNonTableRole) {