| // Copyright 2015 Google Inc. All Rights Reserved. |
| // |
| // 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 COBALT_DOM_PARSER_HTML_DECODER_H_ |
| #define COBALT_DOM_PARSER_HTML_DECODER_H_ |
| |
| #include <string> |
| |
| #include "base/callback.h" |
| #include "base/logging.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/threading/thread_checker.h" |
| #include "cobalt/base/source_location.h" |
| #include "cobalt/dom/document.h" |
| #include "cobalt/dom/node.h" |
| #include "cobalt/loader/decoder.h" |
| |
| namespace cobalt { |
| namespace dom_parser { |
| |
| class LibxmlHTMLParserWrapper; |
| |
| // This decoder class is responsible for decoding a piece of HTML source code |
| // and creating corresponding DOM nodes and inserting them at the given |
| // position. |
| class HTMLDecoder : public loader::Decoder { |
| public: |
| // New nodes will be inserted under parent_node, before reference_node. |
| // If parent_node and document are the same, the HTML input to be decoded is a |
| // whole document, which means implied <html>, <body> tags generated by the |
| // libxml parser will be appended to the document. Otherwise the implied tags |
| // will be ignored. |
| HTMLDecoder(const scoped_refptr<dom::Document>& document, |
| const scoped_refptr<dom::Node>& parent_node, |
| const scoped_refptr<dom::Node>& reference_node, |
| const int dom_max_element_depth, |
| const base::SourceLocation& input_location, |
| const base::Closure& done_callback, |
| const base::Callback<void(const std::string&)>& error_callback, |
| const bool should_run_scripts, |
| const csp::CSPHeaderPolicy require_csp); |
| |
| ~HTMLDecoder(); |
| |
| // From Decoder. |
| loader::LoadResponseType OnResponseStarted( |
| loader::Fetcher* fetcher, |
| const scoped_refptr<net::HttpResponseHeaders>& headers) OVERRIDE; |
| void DecodeChunk(const char* data, size_t size) OVERRIDE; |
| void Finish() OVERRIDE; |
| bool Suspend() OVERRIDE { return false; } |
| |
| void Resume(render_tree::ResourceProvider* /*resource_provider*/) OVERRIDE { |
| NOTIMPLEMENTED(); |
| }; |
| |
| private: |
| // This subclass is responsible for providing the handlers for the interface |
| // of libxml2's SAX parser. |
| scoped_ptr<LibxmlHTMLParserWrapper> libxml_html_parser_wrapper_; |
| scoped_refptr<dom::Document> document_; |
| base::ThreadChecker thread_checker_; |
| const base::Closure done_callback_; |
| |
| const bool should_run_scripts_; |
| |
| // If Cobalt user forbids rendering Cobalt without csp headers. |
| const csp::CSPHeaderPolicy require_csp_; |
| |
| DISALLOW_COPY_AND_ASSIGN(HTMLDecoder); |
| }; |
| |
| } // namespace dom_parser |
| } // namespace cobalt |
| |
| #endif // COBALT_DOM_PARSER_HTML_DECODER_H_ |
