Bug 1101364 - Part 1: Apply AutoApplyUserSelectStyle to nsHTMLEditor::SelectAll(). r=mats

editor/libeditor/nsHTMLEditor.cpp

@@ -3540,24 +3540,26 @@ nsHTMLEditor::SelectAll()
 
   nsCOMPtr<nsIContent> anchorContent = do_QueryInterface(anchorNode, &rv);
   NS_ENSURE_SUCCESS(rv, rv);
-  
-  // If the anchor content has independent selection, we never need to explicitly
-  // select its children.
+
+  nsIContent *rootContent;
   if (anchorContent->HasIndependentSelection()) {
     rv = selection->SetAncestorLimiter(nullptr);
     NS_ENSURE_SUCCESS(rv, rv);
-    nsCOMPtr<nsIDOMNode> rootElement = do_QueryInterface(mRootElement, &rv);
-    NS_ENSURE_SUCCESS(rv, rv);
-    return selection->SelectAllChildren(rootElement);
+    rootContent = mRootElement;
+  } else {
+    nsCOMPtr<nsIPresShell> ps = GetPresShell();
+    rootContent = anchorContent->GetSelectionRootContent(ps);
   }
 
-  nsCOMPtr<nsIPresShell> ps = GetPresShell();
-  nsIContent *rootContent = anchorContent->GetSelectionRootContent(ps);
   NS_ENSURE_TRUE(rootContent, NS_ERROR_UNEXPECTED);
 
   nsCOMPtr<nsIDOMNode> rootElement = do_QueryInterface(rootContent, &rv);
   NS_ENSURE_SUCCESS(rv, rv);
 
+  Maybe<mozilla::dom::Selection::AutoApplyUserSelectStyle> userSelection;
+  if (!rootContent->IsEditable()) {
+    userSelection.emplace(selection);
+  }
   return selection->SelectAllChildren(rootElement);
 }