1 // Copyright 2014 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 CHROME_BROWSER_EXTENSIONS_API_IMAGE_WRITER_PRIVATE_IMAGE_WRITER_UTILITY_CLIENT_H_ 6 #define CHROME_BROWSER_EXTENSIONS_API_IMAGE_WRITER_PRIVATE_IMAGE_WRITER_UTILITY_CLIENT_H_ 7 8 #include "base/files/file_path.h" 9 #include "base/memory/weak_ptr.h" 10 #include "base/threading/sequenced_worker_pool.h" 11 #include "content/public/browser/utility_process_host.h" 12 #include "content/public/browser/utility_process_host_client.h" 13 14 // Writes a disk image to a device inside the utility process. 15 class ImageWriterUtilityClient : public content::UtilityProcessHostClient { 16 public: 17 typedef base::Callback<void()> CancelCallback; 18 typedef base::Callback<void()> SuccessCallback; 19 typedef base::Callback<void(int64)> ProgressCallback; 20 typedef base::Callback<void(const std::string&)> ErrorCallback; 21 22 ImageWriterUtilityClient(); 23 24 // Starts the write. 25 // |progress_callback|: Called periodically with the count of bytes processed. 26 // |success_callback|: Called at successful completion. 27 // |error_callback|: Called with an error message on failure. 28 // |source|: The path to the source file to read data from. 29 // |target|: The path to the target device to write the image file to. 30 virtual void Write(const ProgressCallback& progress_callback, 31 const SuccessCallback& success_callback, 32 const ErrorCallback& error_callback, 33 const base::FilePath& source, 34 const base::FilePath& target); 35 36 // Starts a verification. 37 // |progress_callback|: Called periodically with the count of bytes processed. 38 // |success_callback|: Called at successful completion. 39 // |error_callback|: Called with an error message on failure. 40 // |source|: The path to the source file to read data from. 41 // |target|: The path to the target device to write the image file to. 42 virtual void Verify(const ProgressCallback& progress_callback, 43 const SuccessCallback& success_callback, 44 const ErrorCallback& error_callback, 45 const base::FilePath& source, 46 const base::FilePath& target); 47 48 // Cancels any pending write or verification. 49 // |cancel_callback|: Called when the cancel has actually occurred. 50 virtual void Cancel(const CancelCallback& cancel_callback); 51 52 // Shuts down the Utility thread that may have been created. 53 virtual void Shutdown(); 54 55 protected: 56 // It's a reference-counted object, so destructor is not public. 57 virtual ~ImageWriterUtilityClient(); 58 59 private: 60 // Ensures the UtilityProcessHost has been created. 61 void StartHost(); 62 63 // UtilityProcessHostClient implementation. 64 virtual void OnProcessCrashed(int exit_code) OVERRIDE; 65 virtual void OnProcessLaunchFailed() OVERRIDE; 66 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; 67 virtual bool Send(IPC::Message* msg); 68 69 // IPC message handlers. 70 void OnWriteImageSucceeded(); 71 void OnWriteImageCancelled(); 72 void OnWriteImageFailed(const std::string& message); 73 void OnWriteImageProgress(int64 progress); 74 75 CancelCallback cancel_callback_; 76 ProgressCallback progress_callback_; 77 SuccessCallback success_callback_; 78 ErrorCallback error_callback_; 79 80 base::WeakPtr<content::UtilityProcessHost> utility_process_host_; 81 82 scoped_refptr<base::MessageLoopProxy> message_loop_proxy_; 83 84 DISALLOW_COPY_AND_ASSIGN(ImageWriterUtilityClient); 85 }; 86 87 #endif // CHROME_BROWSER_EXTENSIONS_API_IMAGE_WRITER_PRIVATE_IMAGE_WRITER_UTILITY_CLIENT_H_ 88
