1 /*
2  * Copyright (c) 2021 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef BASE_NOTIFICATION_DISTRIBUTED_NOTIFICATION_SERVICE_SERVICES_DISTRIBUTED_INCLUDE_SCREEN_STATUS_MANAGER_H
17 #define BASE_NOTIFICATION_DISTRIBUTED_NOTIFICATION_SERVICE_SERVICES_DISTRIBUTED_INCLUDE_SCREEN_STATUS_MANAGER_H
18 
19 #include <mutex>
20 
21 #include "distributed_kv_data_manager.h"
22 #include "event_handler.h"
23 #include "event_runner.h"
24 #include "singleton.h"
25 
26 #include "distributed_device_callback.h"
27 #include "distributed_flow_control.h"
28 
29 namespace OHOS {
30 namespace Notification {
31 class DistributedScreenStatusManager : private DistributedFlowControl,
32                                        public DelayedSingleton<DistributedScreenStatusManager> {
33 public:
34     /**
35      * @brief Check if any other device screen is on.
36      *
37      * @param isUsing True for any other device screen is on, otherwise false.
38      * @return Returns the error code.
39      */
40     ErrCode CheckRemoteDevicesIsUsing(bool &isUsing);
41 
42     /**
43      * @brief Set screen status of local device.
44      *
45      * @param screenOn Indicates the local device screen status.
46      * @return Returns the error code.
47      */
48     ErrCode SetLocalScreenStatus(bool screenOn);
49 
50 private:
51     void OnDeviceConnected(const std::string &deviceId);
52     void OnDeviceDisconnected(const std::string &deviceId);
53 
54     void GetKvDataManager();
55     bool CheckKvDataManager();
56     void GetKvStore();
57     bool CheckKvStore();
58 
59     std::string GenerateDistributedKey(const std::string &deviceId);
60 
61 private:
62     std::recursive_mutex mutex_;
63     std::shared_ptr<OHOS::AppExecFwk::EventRunner> runner_ = nullptr;
64     std::shared_ptr<OHOS::AppExecFwk::EventHandler> handler_ = nullptr;
65     std::unique_ptr<DistributedKv::DistributedKvDataManager> kvDataManager_ = nullptr;
66     std::shared_ptr<DistributedKv::SingleKvStore> kvStore_ = nullptr;
67     std::shared_ptr<DistributedDeviceCallback> deviceCb_ = nullptr;
68     std::shared_ptr<DistributedHardware::DmInitCallback> initCallback_;
69 
70     bool localScreenOn_ = false;
71 
72     class DeviceInitCallBack : public DistributedHardware::DmInitCallback {
73     public:
74         void OnRemoteDied() override;
75     };
76 
77     DECLARE_DELAYED_SINGLETON(DistributedScreenStatusManager);
78     DISALLOW_COPY_AND_MOVE(DistributedScreenStatusManager);
79 };
80 }  // namespace Notification
81 }  // namespace OHOS
82 
83 #endif // BASE_NOTIFICATION_DISTRIBUTED_NOTIFICATION_SERVICE_SERVICES_DISTRIBUTED_INCLUDE_SCREEN_STATUS_MANAGER_H
84