Editing: Skip TestRendering in ReplaceSelectionCommand if the editing host is plain-text editable a…

third_party/WebKit/Source/core/editing/commands/ReplaceSelectionCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009, 2010, 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 158 matching lines @@
         shadowAncestorElement = editableRoot.get();
 
     if (!editableRoot->getAttributeEventListener(EventTypeNames::webkitBeforeTextInserted)
         // FIXME: Remove these checks once textareas and textfields actually register an event handler.
         && !(shadowAncestorElement && shadowAncestorElement->layoutObject() && shadowAncestorElement->layoutObject()->isTextControl())
         && editableRoot->layoutObjectIsRichlyEditable()) {
         removeInterchangeNodes(m_fragment.get());
         return;
     }
 
+    if (!editableRoot->layoutObjectIsRichlyEditable()) {
+        bool isPlainText = true;
+        for (Node& node : NodeTraversal::childrenOf(*m_fragment)) {
+            if (isInterchangeHTMLBRElement(&node) && &node == m_fragment->lastChild())
+                continue;
+            if (!node.isTextNode()) {
+                isPlainText = false;
+                break;
+            }
+        }
+        // We don't need TestRendering for plain-text editing + plain-text insertion.
+        if (isPlainText) {
+            removeInterchangeNodes(m_fragment.get());
+            String originalText = m_fragment->textContent();
+            RefPtrWillBeRawPtr<BeforeTextInsertedEvent> event = BeforeTextInsertedEvent::create(originalText);
+            editableRoot->dispatchEvent(event);
+            if (originalText != event->text()) {
+                m_fragment = createFragmentFromText(selection.toNormalizedEphemeralRange(), event->text());
+                removeInterchangeNodes(m_fragment.get());
+            }
+            return;
+        }
+    }
+
     RefPtrWillBeRawPtr<HTMLElement> holder = insertFragmentForTestRendering(editableRoot.get());
     if (!holder) {
         removeInterchangeNodes(m_fragment.get());
         return;
     }
 
     const EphemeralRange range = VisibleSelection::selectionFromContentsOfNode(holder.get()).toNormalizedEphemeralRange();
     String text = plainText(range, static_cast<TextIteratorBehavior>(TextIteratorEmitsOriginalText | TextIteratorIgnoresStyleVisibility));
 
     removeInterchangeNodes(holder.get());
@@ skipping 1485 matching lines @@
     visitor->trace(m_startOfInsertedContent);
     visitor->trace(m_endOfInsertedContent);
     visitor->trace(m_insertionStyle);
     visitor->trace(m_documentFragment);
     visitor->trace(m_startOfInsertedRange);
     visitor->trace(m_endOfInsertedRange);
     CompositeEditCommand::trace(visitor);
 }
 
 } // namespace blink