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Side by Side Diff: content/browser/loader/resource_handler.h

Issue 12212031: Add support for redirecting ResourceHandlers to a blob: URL (Closed) Base URL: http://git.chromium.org/chromium/src.git@master
Patch Set: Code review fixes Created 7 years, 10 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 // This is the browser side of the resource dispatcher, it receives requests 5 // This is the browser side of the resource dispatcher, it receives requests
6 // from the RenderProcessHosts, and dispatches them to URLRequests. It then 6 // from the RenderProcessHosts, and dispatches them to URLRequests. It then
7 // fowards the messages from the URLRequests back to the correct process for 7 // fowards the messages from the URLRequests back to the correct process for
8 // handling. 8 // handling.
9 // 9 //
10 // See http://dev.chromium.org/developers/design-documents/multi-process-resourc e-loading 10 // See http://dev.chromium.org/developers/design-documents/multi-process-resourc e-loading
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77 // If the handler returns false, then the request is cancelled. Otherwise, 77 // If the handler returns false, then the request is cancelled. Otherwise,
78 // once data is available, OnReadCompleted will be called. 78 // once data is available, OnReadCompleted will be called.
79 virtual bool OnWillRead(int request_id, 79 virtual bool OnWillRead(int request_id,
80 net::IOBuffer** buf, 80 net::IOBuffer** buf,
81 int* buf_size, 81 int* buf_size,
82 int min_size) = 0; 82 int min_size) = 0;
83 83
84 // Data (*bytes_read bytes) was written into the buffer provided by 84 // Data (*bytes_read bytes) was written into the buffer provided by
85 // OnWillRead. A return value of false cancels the request, true continues 85 // OnWillRead. A return value of false cancels the request, true continues
86 // reading data. Set |*defer| to true to defer reading more response data. 86 // reading data. Set |*defer| to true to defer reading more response data.
87 // Call ResourceDispatcherHostImpl::ResumeDeferredRequest to continue reading 87 // Call controller()->Resume() to continue reading response data.
88 // response data.
89 virtual bool OnReadCompleted(int request_id, int bytes_read, 88 virtual bool OnReadCompleted(int request_id, int bytes_read,
90 bool* defer) = 0; 89 bool* defer) = 0;
91 90
92 // The response is complete. The final response status is given. Returns 91 // The response is complete. The final response status is given. Returns
93 // false if the handler is deferring the call to a later time. Otherwise, 92 // false if the handler is deferring the call to a later time. Otherwise,
94 // the request will be destroyed upon return. 93 // the request will be destroyed upon return.
95 virtual bool OnResponseCompleted(int request_id, 94 virtual bool OnResponseCompleted(int request_id,
96 const net::URLRequestStatus& status, 95 const net::URLRequestStatus& status,
97 const std::string& security_info) = 0; 96 const std::string& security_info) = 0;
98 97
99 // This notification is synthesized by the RedirectToFileResourceHandler 98 // This notification is synthesized by the RedirectToFileResourceHandler
100 // to indicate progress of 'download_to_file' requests. OnReadCompleted 99 // to indicate progress of 'download_to_file' requests. OnReadCompleted
101 // calls are consumed by the RedirectToFileResourceHandler and replaced 100 // calls are consumed by the RedirectToFileResourceHandler and replaced
102 // with OnDataDownloaded calls. 101 // with OnDataDownloaded calls.
103 virtual void OnDataDownloaded(int request_id, int bytes_downloaded) = 0; 102 virtual void OnDataDownloaded(int request_id, int bytes_downloaded) = 0;
104 103
105 protected: 104 protected:
106 ResourceHandler() : controller_(NULL) {} 105 ResourceHandler() : controller_(NULL) {}
107 ResourceController* controller() { return controller_; } 106 ResourceController* controller() { return controller_; }
108 107
109 private: 108 private:
110 ResourceController* controller_; 109 ResourceController* controller_;
111 }; 110 };
112 111
113 } // namespace content 112 } // namespace content
114 113
115 #endif // CONTENT_BROWSER_LOADER_RESOURCE_HANDLER_H_ 114 #endif // CONTENT_BROWSER_LOADER_RESOURCE_HANDLER_H_
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