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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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_TASK_MANAGEMENT_PROVIDERS_TASK_PROVIDER_OBSERVER_H_ | 5 #ifndef CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_TASK_PROVIDER_OBSERVER_H_ |
6 #define CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_TASK_PROVIDER_OBSERVER_H_ | 6 #define CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_TASK_PROVIDER_OBSERVER_H_ |
7 | 7 |
| 8 #include "base/macros.h" |
8 #include "chrome/browser/task_management/providers/task.h" | 9 #include "chrome/browser/task_management/providers/task.h" |
9 | 10 |
10 namespace task_management { | 11 namespace task_management { |
11 | 12 |
12 // Defines an interface for observing tasks addition / removal. | 13 // Defines an interface for observing tasks addition / removal. |
13 class TaskProviderObserver { | 14 class TaskProviderObserver { |
14 public: | 15 public: |
15 TaskProviderObserver() {} | 16 TaskProviderObserver() {} |
16 virtual ~TaskProviderObserver() {} | 17 virtual ~TaskProviderObserver() {} |
17 | 18 |
18 // This notifies of the event that a new |task| has been created. | 19 // This notifies of the event that a new |task| has been created. |
19 virtual void TaskAdded(Task* task) = 0; | 20 virtual void TaskAdded(Task* task) = 0; |
20 | 21 |
21 // This notifies of the event that a |task| is about to be removed. The task | 22 // This notifies of the event that a |task| is about to be removed. The task |
22 // is still valid during this call, after that it may never be used again by | 23 // is still valid during this call, after that it may never be used again by |
23 // the observer and references to it must not be kept. | 24 // the observer and references to it must not be kept. |
24 virtual void TaskRemoved(Task* task) = 0; | 25 virtual void TaskRemoved(Task* task) = 0; |
25 | 26 |
26 private: | 27 private: |
27 DISALLOW_COPY_AND_ASSIGN(TaskProviderObserver); | 28 DISALLOW_COPY_AND_ASSIGN(TaskProviderObserver); |
28 }; | 29 }; |
29 | 30 |
30 } // namespace task_management | 31 } // namespace task_management |
31 | 32 |
32 #endif // CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_TASK_PROVIDER_OBSERVER_H_ | 33 #endif // CHROME_BROWSER_TASK_MANAGEMENT_PROVIDERS_TASK_PROVIDER_OBSERVER_H_ |
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