Use tighter typing in editing: DeleteSelectionCommand

Source/core/editing/CompositeEditCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2007, 2008 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 46 matching lines @@
 #include "core/editing/SplitTextNodeCommand.h"
 #include "core/editing/SplitTextNodeContainingElementCommand.h"
 #include "core/editing/TextIterator.h"
 #include "core/editing/VisibleUnits.h"
 #include "core/editing/WrapContentsInDummySpanCommand.h"
 #include "core/editing/htmlediting.h"
 #include "core/editing/markup.h"
 #include "core/events/ScopedEventQueue.h"
 #include "core/frame/LocalFrame.h"
 #include "core/html/HTMLBRElement.h"
+#include "core/html/HTMLDivElement.h"
 #include "core/html/HTMLElement.h"
 #include "core/html/HTMLSpanElement.h"
 #include "core/rendering/InlineTextBox.h"
 #include "core/rendering/RenderBlock.h"
 #include "core/rendering/RenderListItem.h"
 #include "core/rendering/RenderText.h"
 
 namespace blink {
 
 using namespace HTMLNames;
@@ skipping 209 matching lines @@
 {
     applyCommandToComposite(InsertParagraphSeparatorCommand::create(document(), useDefaultParagraphElement, pasteBlockqutoeIntoUnquotedArea));
 }
 
 bool CompositeEditCommand::isRemovableBlock(const Node* node)
 {
     ASSERT(node);
     if (!isHTMLDivElement(*node))
         return false;
 
-    ContainerNode* parentNode = node->parentNode();
+    const HTMLDivElement& element = toHTMLDivElement(*node);
+    ContainerNode* parentNode = element.parentNode();
     if (parentNode && parentNode->firstChild() != parentNode->lastChild())
         return false;
 
-    if (!toElement(node)->hasAttributes())
+    if (!element.hasAttributes())
         return true;
 
     return false;
 }
 
 void CompositeEditCommand::insertNodeBefore(PassRefPtrWillBeRawPtr<Node> insertChild, PassRefPtrWillBeRawPtr<Node> refChild, ShouldAssumeContentIsAlwaysEditable shouldAssumeContentIsAlwaysEditable)
 {
     ASSERT(!isHTMLBodyElement(*refChild));
     applyCommandToComposite(InsertNodeBeforeCommand::create(insertChild, refChild, shouldAssumeContentIsAlwaysEditable));
 }
@@ skipping 1184 matching lines @@
 }
 
 void CompositeEditCommand::trace(Visitor* visitor)
 {
     visitor->trace(m_commands);
     visitor->trace(m_composition);
     EditCommand::trace(visitor);
 }
 
 } // namespace blink