| // Copyright 2015 The Cobalt Authors. 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_XML_DECODER_H_ |
| #define COBALT_DOM_PARSER_XML_DECODER_H_ |
| |
| #include <memory> |
| #include <string> |
| |
| #include "base/callback.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/threading/thread_checker.h" |
| #include "cobalt/base/source_location.h" |
| #include "cobalt/dom/node.h" |
| #include "cobalt/dom/xml_document.h" |
| #include "cobalt/loader/decoder.h" |
| |
| namespace cobalt { |
| namespace dom_parser { |
| |
| class LibxmlXMLParserWrapper; |
| |
| // This decoder class is responsible for decoding a piece of XML source code |
| // using libxml2 SAX parser, creating corresponding DOM nodes and inserting them |
| // at the given position. |
| class XMLDecoder : public loader::Decoder { |
| public: |
| // New nodes will be inserted under parent_node, before reference_node. |
| XMLDecoder(const scoped_refptr<dom::XMLDocument>& xml_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 loader::Decoder::OnCompleteFunction& load_complete_callback); |
| |
| ~XMLDecoder(); |
| |
| // From Decoder. |
| 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. |
| std::unique_ptr<LibxmlXMLParserWrapper> libxml_xml_parser_wrapper_; |
| |
| THREAD_CHECKER(thread_checker_); |
| const loader::Decoder::OnCompleteFunction load_complete_callback_; |
| |
| DISALLOW_COPY_AND_ASSIGN(XMLDecoder); |
| }; |
| |
| } // namespace dom_parser |
| } // namespace cobalt |
| |
| #endif // COBALT_DOM_PARSER_XML_DECODER_H_ |