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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 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 | 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 #ifndef CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_REQUEST_MANAGER_H_ | 5 #ifndef CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_REQUEST_MANAGER_H_ |
6 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_REQUEST_MANAGER_H_ | 6 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_REQUEST_MANAGER_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <string> | 9 #include <string> |
10 | 10 |
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26 public: | 26 public: |
27 class HandlerInterface { | 27 class HandlerInterface { |
28 public: | 28 public: |
29 virtual ~HandlerInterface() {} | 29 virtual ~HandlerInterface() {} |
30 | 30 |
31 // Called when the request is created. Executes the request implementation. | 31 // Called when the request is created. Executes the request implementation. |
32 // Returns false in case of a execution failure. | 32 // Returns false in case of a execution failure. |
33 virtual bool Execute(int request_id) = 0; | 33 virtual bool Execute(int request_id) = 0; |
34 | 34 |
35 // Success callback invoked by the providing extension in response to | 35 // Success callback invoked by the providing extension in response to |
36 // Execute(). It may be called more than once, until |has_next| is set to | 36 // Execute(). It may be called more than once, until |has_more| is set to |
37 // false. | 37 // false. |
38 virtual void OnSuccess(int request_id, | 38 virtual void OnSuccess(int request_id, |
39 scoped_ptr<RequestValue> result, | 39 scoped_ptr<RequestValue> result, |
40 bool has_next) = 0; | 40 bool has_more) = 0; |
41 | 41 |
42 // Error callback invoked by the providing extension in response to | 42 // Error callback invoked by the providing extension in response to |
43 // Execute(). It can be called at most once. It can be also called if the | 43 // Execute(). It can be called at most once. It can be also called if the |
44 // request is aborted due to a timeout. | 44 // request is aborted due to a timeout. |
45 virtual void OnError(int request_id, base::File::Error error) = 0; | 45 virtual void OnError(int request_id, base::File::Error error) = 0; |
46 }; | 46 }; |
47 | 47 |
48 RequestManager(); | 48 RequestManager(); |
49 virtual ~RequestManager(); | 49 virtual ~RequestManager(); |
50 | 50 |
51 // Creates a request and returns its request id (greater than 0). Returns 0 in | 51 // Creates a request and returns its request id (greater than 0). Returns 0 in |
52 // case of an error (eg. too many requests). | 52 // case of an error (eg. too many requests). |
53 int CreateRequest(scoped_ptr<HandlerInterface> handler); | 53 int CreateRequest(scoped_ptr<HandlerInterface> handler); |
54 | 54 |
55 // Handles successful response for the |request_id|. If |has_next| is false, | 55 // Handles successful response for the |request_id|. If |has_more| is false, |
56 // then the request is disposed, after handling the |response|. On error, | 56 // then the request is disposed, after handling the |response|. On error, |
57 // returns false, and the request is disposed. | 57 // returns false, and the request is disposed. |
58 bool FulfillRequest(int request_id, | 58 bool FulfillRequest(int request_id, |
59 scoped_ptr<RequestValue> response, | 59 scoped_ptr<RequestValue> response, |
60 bool has_next); | 60 bool has_more); |
61 | 61 |
62 // Handles error response for the |request_id|. If handling the error fails, | 62 // Handles error response for the |request_id|. If handling the error fails, |
63 // returns false. Always disposes the request. | 63 // returns false. Always disposes the request. |
64 bool RejectRequest(int request_id, base::File::Error error); | 64 bool RejectRequest(int request_id, base::File::Error error); |
65 | 65 |
66 // Sets a custom timeout for tests. The new timeout value will be applied to | 66 // Sets a custom timeout for tests. The new timeout value will be applied to |
67 // new requests | 67 // new requests |
68 void SetTimeoutForTests(const base::TimeDelta& timeout); | 68 void SetTimeoutForTests(const base::TimeDelta& timeout); |
69 | 69 |
70 // Gets number of active requests for logging purposes. | 70 // Gets number of active requests for logging purposes. |
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96 base::TimeDelta timeout_; | 96 base::TimeDelta timeout_; |
97 base::WeakPtrFactory<RequestManager> weak_ptr_factory_; | 97 base::WeakPtrFactory<RequestManager> weak_ptr_factory_; |
98 | 98 |
99 DISALLOW_COPY_AND_ASSIGN(RequestManager); | 99 DISALLOW_COPY_AND_ASSIGN(RequestManager); |
100 }; | 100 }; |
101 | 101 |
102 } // namespace file_system_provider | 102 } // namespace file_system_provider |
103 } // namespace chromeos | 103 } // namespace chromeos |
104 | 104 |
105 #endif // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_REQUEST_MANAGER_H_ | 105 #endif // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_REQUEST_MANAGER_H_ |
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