| /* |
| * Copyright 2012 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. |
| */ |
| |
| // Author: nikhilmadan@google.com (Nikhil Madan) |
| |
| #ifndef NET_INSTAWEB_REWRITER_PUBLIC_REDIRECT_ON_SIZE_LIMIT_FILTER_H_ |
| #define NET_INSTAWEB_REWRITER_PUBLIC_REDIRECT_ON_SIZE_LIMIT_FILTER_H_ |
| |
| #include "net/instaweb/rewriter/public/common_filter.h" |
| #include "net/instaweb/rewriter/public/rewrite_driver.h" |
| #include "pagespeed/kernel/base/basictypes.h" |
| #include "pagespeed/kernel/html/html_element.h" |
| #include "pagespeed/kernel/html/html_filter.h" |
| |
| namespace net_instaweb { |
| |
| // Inserts a redirect to "ModPagespeed=off" if we have exceeded the limit on the |
| // maximum number of bytes that should be parsed. |
| class RedirectOnSizeLimitFilter : public CommonFilter { |
| public: |
| explicit RedirectOnSizeLimitFilter(RewriteDriver* rewrite_driver); |
| virtual ~RedirectOnSizeLimitFilter(); |
| |
| virtual void StartDocumentImpl(); |
| virtual void StartElementImpl(HtmlElement* element); |
| virtual void EndElementImpl(HtmlElement* element); |
| |
| virtual const char* Name() const { return "RedirectOnSizeLimit"; } |
| ScriptUsage GetScriptUsage() const override { return kWillInjectScripts; } |
| |
| private: |
| void InsertScriptIfNeeded(HtmlElement* element, bool is_start); |
| |
| bool redirect_inserted_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RedirectOnSizeLimitFilter); |
| }; |
| |
| } // namespace net_instaweb |
| |
| #endif // NET_INSTAWEB_REWRITER_PUBLIC_REDIRECT_ON_SIZE_LIMIT_FILTER_H_ |