Use new is*Element() helper functions more in editing code

Source/core/editing/Editor.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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 62 matching lines @@
 #include "core/html/HTMLInputElement.h"
 #include "core/html/HTMLTextAreaElement.h"
 #include "core/html/parser/HTMLParserIdioms.h"
 #include "core/loader/EmptyClients.h"
 #include "core/page/EditorClient.h"
 #include "core/page/EventHandler.h"
 #include "core/page/FocusController.h"
 #include "core/page/Page.h"
 #include "core/rendering/HitTestResult.h"
 #include "core/rendering/RenderImage.h"
+#include "core/svg/SVGImageElement.h"
 #include "platform/KillRing.h"
 #include "platform/weborigin/KURL.h"
 #include "wtf/unicode/CharacterNames.h"
 
 namespace WebCore {
 
 using namespace std;
 using namespace HTMLNames;
 using namespace WTF;
 using namespace Unicode;
@@ skipping 124 matching lines @@
     if (!document)
         return 0;
     if (!document->isImageDocument())
         return 0;
 
     HTMLElement* body = document->body();
     if (!body)
         return 0;
 
     Node* node = body->firstChild();
-    if (!node)
-        return 0;
-    if (!node->hasTagName(imgTag))
+    if (!isHTMLImageElement(node))
         return 0;
     return toHTMLImageElement(node);
 }
 
 bool Editor::canCopy() const
 {
     if (imageElementFromImageDocument(m_frame.document()))
         return true;
     FrameSelection& selection = m_frame.selection();
     return selection.isRange() && !selection.isInPasswordField();
@@ skipping 193 matching lines @@
 
     RenderImage* renderer = toRenderImage(node->renderer());
     ImageResource* cachedImage = renderer->cachedImage();
     if (!cachedImage || cachedImage->errorOccurred())
         return;
     Image* image = cachedImage->imageForRenderer(renderer);
     ASSERT(image);
 
     // FIXME: This should probably be reconciled with HitTestResult::absoluteImageURL.
     AtomicString urlString;
-    if (node->hasTagName(imgTag) || node->hasTagName(inputTag))
+    if (isHTMLImageElement(*node) || isHTMLInputElement(*node))
         urlString = toElement(node)->getAttribute(srcAttr);
-    else if (node->hasTagName(SVGNames::imageTag))
+    else if (isSVGImageElement(*node))
         urlString = toElement(node)->getAttribute(XLinkNames::hrefAttr);
-    else if (node->hasTagName(embedTag) || node->hasTagName(objectTag))
+    else if (isHTMLEmbedElement(*node) || isHTMLObjectElement(*node))
         urlString = toElement(node)->imageSourceURL();
     KURL url = urlString.isEmpty() ? KURL() : node->document().completeURL(stripLeadingAndTrailingHTMLSpaces(urlString));
 
     pasteboard->writeImage(image, url, title);
 }
 
 // Returns whether caller should continue with "the default processing", which is the same as
 // the event handler NOT setting the return value to false
 bool Editor::dispatchCPPEvent(const AtomicString &eventType, ClipboardAccessPolicy policy, PasteMode pasteMode)
 {
@@ skipping 773 matching lines @@
     return m_frame.spellChecker();
 }
 
 void Editor::toggleOverwriteModeEnabled()
 {
     m_overwriteModeEnabled = !m_overwriteModeEnabled;
     frame().selection().setShouldShowBlockCursor(m_overwriteModeEnabled);
 }
 
 } // namespace WebCore