13f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// Use of this source code is governed by a BSD-style license that can be 3c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// found in the LICENSE file. 4c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 5c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#ifndef NET_URL_REQUEST_VIEW_CACHE_HELPER_H_ 6c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#define NET_URL_REQUEST_VIEW_CACHE_HELPER_H_ 73345a6884c488ff3a535c2c9acdd33d74b37e311Iain Merrick#pragma once 8c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 9c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#include <string> 10c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 11c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "net/base/completion_callback.h" 12c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "net/base/io_buffer.h" 13c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 14c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochnamespace disk_cache { 15c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochclass Backend; 16c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochclass Entry; 173f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen} // namespace disk_cache 18c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 19c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochnamespace net { 20c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 213f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsenclass URLRequestContext; 223f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen 23c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scottclass ViewCacheHelper { 24c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott public: 25731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick ViewCacheHelper(); 26c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ~ViewCacheHelper(); 27c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 28c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Formats the cache information for |key| as HTML. Returns a net error code. 29c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If this method returns ERR_IO_PENDING, |callback| will be notified when the 30c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // operation completes. |out| must remain valid until this operation completes 31c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // or the object is destroyed. 323f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen int GetEntryInfoHTML(const std::string& key, 33ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen URLRequestContext* context, 343f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen std::string* out, 353f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen CompletionCallback* callback); 36c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 37c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Formats the cache contents as HTML. Returns a net error code. 38c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // If this method returns ERR_IO_PENDING, |callback| will be notified when the 39c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // operation completes. |out| must remain valid until this operation completes 40c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // or the object is destroyed. |url_prefix| will be prepended to each entry 41c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // key as a link to the entry. 42ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen int GetContentsHTML(URLRequestContext* context, 433f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen const std::string& url_prefix, 443f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen std::string* out, 453f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen CompletionCallback* callback); 46c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 47c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch private: 48c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch enum State { 49c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch STATE_NONE, 50c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch STATE_GET_BACKEND, 51c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch STATE_GET_BACKEND_COMPLETE, 52c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch STATE_OPEN_NEXT_ENTRY, 53c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch STATE_OPEN_NEXT_ENTRY_COMPLETE, 54c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch STATE_OPEN_ENTRY, 55c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch STATE_OPEN_ENTRY_COMPLETE, 56c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch STATE_READ_RESPONSE, 57c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch STATE_READ_RESPONSE_COMPLETE, 58c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch STATE_READ_DATA, 59c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch STATE_READ_DATA_COMPLETE 60c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch }; 61c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 62c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Implements GetEntryInfoHTML and GetContentsHTML. 633f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen int GetInfoHTML(const std::string& key, 64ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen URLRequestContext* context, 653f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen const std::string& url_prefix, 663f50c38dc070f4bb515c1b64450dae14f316474eKristian Monsen std::string* out, 67c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch CompletionCallback* callback); 68c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 69c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // This is a helper function used to trigger a completion callback. It may 70c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // only be called if callback_ is non-null. 71c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch void DoCallback(int rv); 72c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 73c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // This will trigger the completion callback if appropriate. 74c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch void HandleResult(int rv); 75c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 76c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Runs the state transition loop. 77c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int DoLoop(int result); 78c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 79c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Each of these methods corresponds to a State value. If there is an 80c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // argument, the value corresponds to the return of the previous state or 81c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // corresponding callback. 82c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int DoGetBackend(); 83c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int DoGetBackendComplete(int result); 84c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int DoOpenNextEntry(); 85c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int DoOpenNextEntryComplete(int result); 86c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int DoOpenEntry(); 87c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int DoOpenEntryComplete(int result); 88c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int DoReadResponse(); 89c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int DoReadResponseComplete(int result); 90c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int DoReadData(); 91c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int DoReadDataComplete(int result); 92c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 93c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Called to signal completion of asynchronous IO. 94c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch void OnIOComplete(int result); 95c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 96ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen scoped_refptr<URLRequestContext> context_; 97c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch disk_cache::Backend* disk_cache_; 98c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch disk_cache::Entry* entry_; 99c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch void* iter_; 100ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen scoped_refptr<IOBuffer> buf_; 101c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int buf_len_; 102c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int index_; 103c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 104c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::string key_; 105c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::string url_prefix_; 106c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch std::string* data_; 107c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch CompletionCallback* callback_; 108c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 109c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch State next_state_; 110c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 111c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch CompletionCallbackImpl<ViewCacheHelper> cache_callback_; 112c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch scoped_refptr<CancelableCompletionCallback<ViewCacheHelper> > entry_callback_; 113c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 114c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DISALLOW_COPY_AND_ASSIGN(ViewCacheHelper); 115c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott}; 116c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 117c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} // namespace net. 118c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 119c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#endif // NET_URL_REQUEST_VIEW_CACHE_HELPER_H_ 120