Move isRenderedCharacter() to EditorCommand.cpp from Position.cpp

Source/core/editing/commands/EditCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2007 Apple, 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 13 matching lines @@
  */
 
 #include "config.h"
 #include "core/editing/commands/EditCommand.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/NodeTraversal.h"
 #include "core/editing/FrameSelection.h"
 #include "core/editing/commands/CompositeEditCommand.h"
 #include "core/frame/LocalFrame.h"
+#include "core/layout/LayoutText.h"
 
 namespace blink {
 
 EditCommand::EditCommand(Document& document)
     : m_document(&document)
     , m_parent(nullptr)
 {
     ASSERT(m_document);
     ASSERT(m_document->frame());
     setStartingSelection(m_document->frame()->selection().selection());
@@ skipping 38 matching lines @@
         }
         command->m_endingSelection = selection;
     }
 }
 
 void EditCommand::setEndingSelection(const VisiblePosition& position)
 {
     setEndingSelection(VisibleSelection(position));
 }
 
+bool EditCommand::isRenderedCharacter(const Position& position)
+{
+    if (position.isNull())
+        return false;
+    ASSERT(position.isOffsetInAnchor());
+    if (!position.anchorNode()->isTextNode())
+        return false;
+
+    LayoutObject* layoutObject = position.anchorNode()->layoutObject();
+    if (!layoutObject)
+        return false;
+
+    return toLayoutText(layoutObject)->isRenderedCharacter(position.offsetInContainerNode());
+}
+
 void EditCommand::setParent(CompositeEditCommand* parent)
 {
     ASSERT((parent && !m_parent) || (!parent && m_parent));
     ASSERT(!parent || !isCompositeEditCommand() || !toCompositeEditCommand(this)->composition());
     m_parent = parent;
     if (parent) {
         m_startingSelection = parent->m_endingSelection;
         m_endingSelection = parent->m_endingSelection;
     }
 }
 
 void SimpleEditCommand::doReapply()
 {
     doApply();
 }
 
 DEFINE_TRACE(EditCommand)
 {
     visitor->trace(m_document);
     visitor->trace(m_startingSelection);
     visitor->trace(m_endingSelection);
     visitor->trace(m_parent);
 }
 
 } // namespace blink