1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef WEBKIT_BROWSER_APPCACHE_APPCACHE_EXECUTABLE_HANDLER_H_ 6 #define WEBKIT_BROWSER_APPCACHE_APPCACHE_EXECUTABLE_HANDLER_H_ 7 8 #include "base/callback.h" 9 #include "base/memory/scoped_ptr.h" 10 #include "url/gurl.h" 11 #include "webkit/browser/webkit_storage_browser_export.h" 12 13 namespace net { 14 class IOBuffer; 15 class URLRequest; 16 } 17 18 namespace appcache { 19 20 // An interface that must be provided by the embedder to support this feature. 21 class WEBKIT_STORAGE_BROWSER_EXPORT AppCacheExecutableHandler { 22 public: 23 // A handler can respond in one of 4 ways, if each of the GURL fields 24 // in 'Response' are empty and use_network is false, an error response is 25 // synthesized. 26 struct Response { 27 GURL cached_resource_url; 28 GURL redirect_url; 29 bool use_network; 30 // TODO: blob + headers would be a good one to provide as well, as it would 31 // make templating possible. 32 }; 33 typedef base::Callback<void(const Response&)> ResponseCallback; 34 35 // Deletion of the handler cancels all pending callbacks. ~AppCacheExecutableHandler()36 virtual ~AppCacheExecutableHandler() {} 37 38 virtual void HandleRequest(net::URLRequest* req, 39 ResponseCallback callback) = 0; 40 }; 41 42 // A factory to produce instances. 43 class WEBKIT_STORAGE_BROWSER_EXPORT AppCacheExecutableHandlerFactory { 44 public: 45 virtual scoped_ptr<AppCacheExecutableHandler> CreateHandler( 46 const GURL& handler_url, net::IOBuffer* handler_source) = 0; 47 48 protected: ~AppCacheExecutableHandlerFactory()49 virtual ~AppCacheExecutableHandlerFactory() {} 50 }; 51 52 } // namespace appcache 53 54 #endif // WEBKIT_BROWSER_APPCACHE_APPCACHE_EXECUTABLE_HANDLER_H_ 55