Expand FrameSelection/SelectionEditor::firstRange()

third_party/WebKit/Source/core/editing/DOMSelection.cpp

 /*
  * Copyright (C) 2007, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2012 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.
@@ skipping 522 matching lines @@
   Range* range = createRangeFromSelectionEditor();
   cacheRangeIfSelectionOfDocument(range);
   return range;
 }
 
 Range* DOMSelection::primaryRangeOrNull() const {
   return rangeCount() > 0 ? getRangeAt(0, ASSERT_NO_EXCEPTION) : nullptr;
 }
 
 Range* DOMSelection::createRangeFromSelectionEditor() const {
-  Position anchor = blink::anchorPosition(visibleSelection());
+  const VisibleSelection& selection = visibleSelection();
+  const Position& anchor = blink::anchorPosition(selection);
   if (isSelectionOfDocument() && !anchor.anchorNode()->isInShadowTree())
-    return frame()->selection().firstRange();
+    return createRange(firstEphemeralRangeOf(selection));
 
-  Node* node = shadowAdjustedNode(anchor);
+  Node* const node = shadowAdjustedNode(anchor);
   if (!node)  // crbug.com/595100
     return nullptr;
-  Position focus = focusPosition(visibleSelection());
-  if (!visibleSelection().isBaseFirst()) {
+  const Position& focus = focusPosition(selection);
+  if (!selection.isBaseFirst()) {
     return Range::create(*anchor.document(), shadowAdjustedNode(focus),
                          shadowAdjustedOffset(focus), node,
                          shadowAdjustedOffset(anchor));
   }
   return Range::create(*anchor.document(), node, shadowAdjustedOffset(anchor),
                        shadowAdjustedNode(focus), shadowAdjustedOffset(focus));
 }
 
 bool DOMSelection::isSelectionOfDocument() const {
   return m_treeScope == m_treeScope->document();
@@ skipping 256 matching lines @@
     m_treeScope->document().addConsoleMessage(
         ConsoleMessage::create(JSMessageSource, ErrorMessageLevel, message));
 }
 
 DEFINE_TRACE(DOMSelection) {
   visitor->trace(m_treeScope);
   ContextClient::trace(visitor);
 }
 
 }  // namespace blink