empty_html_filter.h

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/*
 * Copyright 2010 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http:///www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


#ifndef PAGESPEED_KERNEL_HTML_EMPTY_HTML_FILTER_H_
#define PAGESPEED_KERNEL_HTML_EMPTY_HTML_FILTER_H_

#include "pagespeed/kernel/base/string.h"
#include "pagespeed/kernel/html/html_filter.h"

namespace net_instaweb {

class HtmlCdataNode;
class HtmlCharactersNode;
class HtmlCommentNode;
class HtmlDirectiveNode;
class HtmlElement;
class HtmlIEDirectiveNode;

class EmptyHtmlFilter : public HtmlFilter {
 public:
  EmptyHtmlFilter();
  virtual ~EmptyHtmlFilter();

  virtual void StartDocument();
  virtual void EndDocument();
  virtual void StartElement(HtmlElement* element);
  virtual void EndElement(HtmlElement* element);
  virtual void Cdata(HtmlCdataNode* cdata);
  virtual void Comment(HtmlCommentNode* comment);
  virtual void IEDirective(HtmlIEDirectiveNode* directive);
  virtual void Characters(HtmlCharactersNode* characters);
  virtual void Directive(HtmlDirectiveNode* directive);
  virtual void Flush();
  virtual void DetermineEnabled(GoogleString* disabled_reason);

  virtual bool CanModifyUrls() { return false; }

  ScriptUsage GetScriptUsage() const override { return kNeverInjectsScripts; }

};

}  

#endif