--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKit/chromium/src/DOMUtilitiesPrivate.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2009 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:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "DOMUtilitiesPrivate.h"
+
+#include "Element.h"
+#include "HTMLInputElement.h"
+#include "HTMLLinkElement.h"
+#include "HTMLMetaElement.h"
+#include "HTMLNames.h"
+#include "HTMLOptionElement.h"
+#include "Node.h"
+
+#include "WebInputElement.h"
+
+using namespace WebCore;
+
+namespace {
+
+template <class HTMLNodeType>
+HTMLNodeType* toHTMLElement(Node* node, const QualifiedName& name)
+{
+    if (node->isHTMLElement()
+        && static_cast<HTMLElement*>(node)->hasTagName(name)) {
+        return static_cast<HTMLNodeType*>(node);
+    }
+    return 0;
+}
+
+} // namespace
+
+namespace WebKit {
+
+HTMLInputElement* toHTMLInputElement(Node* node)
+{
+    return toHTMLElement<HTMLInputElement>(node, HTMLNames::inputTag);
+}
+
+HTMLLinkElement* toHTMLLinkElement(Node* node)
+{
+    return toHTMLElement<HTMLLinkElement>(node, HTMLNames::linkTag);
+}
+
+HTMLMetaElement* toHTMLMetaElement(Node* node)
+{
+    return toHTMLElement<HTMLMetaElement>(node, HTMLNames::metaTag);
+}
+
+HTMLOptionElement* toHTMLOptionElement(Node* node)
+{
+    return toHTMLElement<HTMLOptionElement>(node, HTMLNames::optionTag);
+}
+
+String nameOfInputElement(HTMLInputElement* element)
+{
+    return WebInputElement(element).nameForAutofill();
+}
+
+bool elementHasLegalLinkAttribute(const Element* element,
+                                  const QualifiedName& attrName)
+{
+    if (attrName == HTMLNames::srcAttr) {
+        // Check src attribute.
+        if (element->hasTagName(HTMLNames::imgTag)
+            || element->hasTagName(HTMLNames::scriptTag)
+            || element->hasTagName(HTMLNames::iframeTag)
+            || element->hasTagName(HTMLNames::frameTag))
+            return true;
+        if (element->hasTagName(HTMLNames::inputTag)) {
+            const HTMLInputElement* input =
+            static_cast<const HTMLInputElement*>(element);
+            if (input->inputType() == HTMLInputElement::IMAGE)
+                return true;
+        }
+    } else if (attrName == HTMLNames::hrefAttr) {
+        // Check href attribute.
+        if (element->hasTagName(HTMLNames::linkTag)
+            || element->hasTagName(HTMLNames::aTag)
+            || element->hasTagName(HTMLNames::areaTag))
+            return true;
+    } else if (attrName == HTMLNames::actionAttr) {
+        if (element->hasTagName(HTMLNames::formTag))
+            return true;
+    } else if (attrName == HTMLNames::backgroundAttr) {
+        if (element->hasTagName(HTMLNames::bodyTag)
+            || element->hasTagName(HTMLNames::tableTag)
+            || element->hasTagName(HTMLNames::trTag)
+            || element->hasTagName(HTMLNames::tdTag))
+            return true;
+    } else if (attrName == HTMLNames::citeAttr) {
+        if (element->hasTagName(HTMLNames::blockquoteTag)
+            || element->hasTagName(HTMLNames::qTag)
+            || element->hasTagName(HTMLNames::delTag)
+            || element->hasTagName(HTMLNames::insTag))
+            return true;
+    } else if (attrName == HTMLNames::classidAttr
+               || attrName == HTMLNames::dataAttr) {
+        if (element->hasTagName(HTMLNames::objectTag))
+            return true;
+    } else if (attrName == HTMLNames::codebaseAttr) {
+        if (element->hasTagName(HTMLNames::objectTag)
+            || element->hasTagName(HTMLNames::appletTag))
+            return true;
+    }
+    return false;
+}
+
+} // namespace WebKit