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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 DEVICE_WAKE_LOCK_WAKE_LOCK_SERVICE_CONTEXT_H_ | 5 #ifndef DEVICE_WAKE_LOCK_WAKE_LOCK_SERVICE_CONTEXT_H_ |
6 #define DEVICE_WAKE_LOCK_WAKE_LOCK_SERVICE_CONTEXT_H_ | 6 #define DEVICE_WAKE_LOCK_WAKE_LOCK_SERVICE_CONTEXT_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 #include <set> | |
10 #include <utility> | 9 #include <utility> |
11 | 10 |
12 #include "base/callback.h" | 11 #include "base/callback.h" |
13 #include "base/macros.h" | |
14 #include "base/memory/ref_counted.h" | 12 #include "base/memory/ref_counted.h" |
15 #include "base/sequenced_task_runner.h" | 13 #include "base/single_thread_task_runner.h" |
16 #include "device/wake_lock/public/interfaces/wake_lock_context.mojom.h" | 14 #include "device/wake_lock/public/interfaces/wake_lock_context.mojom.h" |
17 #include "device/wake_lock/wake_lock_service_impl.h" | |
18 #include "mojo/public/cpp/bindings/binding.h" | |
19 #include "mojo/public/cpp/bindings/interface_request.h" | |
20 #include "mojo/public/cpp/bindings/strong_binding_set.h" | |
21 #include "ui/gfx/native_widget_types.h" | 15 #include "ui/gfx/native_widget_types.h" |
22 | 16 |
23 namespace device { | 17 namespace device { |
24 | 18 |
25 class PowerSaveBlocker; | |
26 | |
27 // Callback that maps a context ID to the NativeView associated with | 19 // Callback that maps a context ID to the NativeView associated with |
28 // that context. This callback is provided to the Device Service by its | 20 // that context. This callback is provided to the Device Service by its |
29 // embedder. | 21 // embedder. |
30 using WakeLockContextCallback = base::Callback<gfx::NativeView(int)>; | 22 using WakeLockContextCallback = base::Callback<gfx::NativeView(int)>; |
31 | 23 |
32 // Serves requests for WakeLockService connections within a given context. | 24 // Serves requests for WakeLockService connections within a given context. |
33 | |
34 // Note that the lifetime model of WakeLockContext is somewhat complex: It must | |
35 // stay alive as long as either | |
36 // (1) Its Mojo connection is still valid (as the client might make future | |
37 // GetWakeLock() calls) OR | |
38 // (2) There are still live WakeLock instances that it has instantiated (since | |
39 // they call into it when they receive Mojo requests from *their* clients). | |
40 // Consequently, WakeLockContext monitors the state of the connections described | |
41 // in (1) and (2), dying only when *all* of those connections go away. | |
42 class WakeLockServiceContext : public mojom::WakeLockContext { | 25 class WakeLockServiceContext : public mojom::WakeLockContext { |
43 public: | 26 public: |
44 WakeLockServiceContext( | 27 WakeLockServiceContext( |
45 mojom::WakeLockContextRequest request, | |
46 int context_id, | 28 int context_id, |
47 scoped_refptr<base::SingleThreadTaskRunner> file_task_runner, | 29 scoped_refptr<base::SingleThreadTaskRunner> file_task_runner, |
48 const WakeLockContextCallback& native_view_getter); | 30 const WakeLockContextCallback& native_view_getter); |
49 ~WakeLockServiceContext() override; | 31 ~WakeLockServiceContext() override; |
50 | 32 |
51 // mojom::WakeLockContext: | 33 // mojom::WakeLockContext: |
52 void GetWakeLock( | 34 void GetWakeLock(mojom::WakeLockServiceRequest request) override; |
53 mojo::InterfaceRequest<mojom::WakeLockService> request) override; | |
54 void HasWakeLockForTests( | |
55 const HasWakeLockForTestsCallback& callback) override; | |
56 | |
57 // Requests wake lock. | |
58 void RequestWakeLock(); | |
59 | |
60 // Cancels pending wake lock request. | |
61 void CancelWakeLock(); | |
62 | 35 |
63 private: | 36 private: |
64 void CreateWakeLock(); | |
65 void RemoveWakeLock(); | |
66 void UpdateWakeLock(); | |
67 void OnContextBindingError(); | |
68 | |
69 // Checks whether this instance is still needed, and if not, destroys it. | |
70 void DestroyIfNoLongerNeeded(); | |
71 | |
72 scoped_refptr<base::SequencedTaskRunner> main_task_runner_; | |
73 scoped_refptr<base::SingleThreadTaskRunner> file_task_runner_; | 37 scoped_refptr<base::SingleThreadTaskRunner> file_task_runner_; |
74 | |
75 int num_lock_requests_; | |
76 | |
77 // The actual power save blocker for screen. | |
78 std::unique_ptr<PowerSaveBlocker> wake_lock_; | |
79 | |
80 #if defined(OS_ANDROID) | |
81 int context_id_; | 38 int context_id_; |
82 WakeLockContextCallback native_view_getter_; | 39 WakeLockContextCallback native_view_getter_; |
83 #endif | |
84 | |
85 mojo::Binding<mojom::WakeLockContext> context_binding_; | |
86 bool context_binding_encountered_error_; | |
87 | |
88 mojo::StrongBindingSet<mojom::WakeLockService> wake_lock_bindings_; | |
89 | 40 |
90 DISALLOW_COPY_AND_ASSIGN(WakeLockServiceContext); | 41 DISALLOW_COPY_AND_ASSIGN(WakeLockServiceContext); |
91 }; | 42 }; |
92 | 43 |
93 } // namespace device | 44 } // namespace device |
94 | 45 |
95 #endif // DEVICE_WAKE_LOCK_WAKE_LOCK_SERVICE_CONTEXT_H_ | 46 #endif // DEVICE_WAKE_LOCK_WAKE_LOCK_SERVICE_CONTEXT_H_ |
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