1 /*
2  * Copyright (c) 2022-2023 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 DEVICESTATUS_EVENT_H
17 #define DEVICESTATUS_EVENT_H
18 
19 #include <list>
20 #include <map>
21 #include <memory>
22 #include <mutex>
23 #include <string>
24 
25 #include "napi/native_api.h"
26 
27 namespace OHOS {
28 namespace Msdp {
29 namespace DeviceStatus {
30 struct DeviceStatusEventListener {
31     napi_ref onHandlerRef { nullptr };
32 };
33 
34 class DeviceStatusEvent {
35 public:
36     DeviceStatusEvent(napi_env env);
37     DeviceStatusEvent() = default;
38     virtual ~DeviceStatusEvent();
39 
40     virtual bool On(int32_t eventType, napi_value handler, bool isOnce);
41     virtual bool Off(int32_t eventType, napi_value handler);
42 
43 protected:
44     virtual bool OffOnce(int32_t eventType, napi_value handler);
45     virtual void OnEvent(int32_t eventType, size_t argc, int32_t value, bool isOnce);
46     void CheckRet(int32_t eventType, size_t argc, int32_t value,
47         std::shared_ptr<DeviceStatusEventListener> &typeHandler);
48     void SendRet(int32_t eventType, int32_t value, napi_value &result);
49     void ClearEventMap();
50     bool RemoveAllCallback(int32_t eventType);
51     bool SaveCallbackByEvent(int32_t eventType, napi_value handler, bool isOnce,
52         std::map<int32_t, std::list<std::shared_ptr<DeviceStatusEventListener>>> events);
53     bool IsNoExistCallback(std::list<std::shared_ptr<DeviceStatusEventListener>>,
54         napi_value handler, int32_t eventType);
55     void SaveCallback(int32_t eventType, napi_ref onHandlerRef, bool isOnce);
56 
57     napi_env env_ { nullptr };
58     napi_ref thisVarRef_ { nullptr };
59     std::mutex mutex_;
60     std::map<int32_t, std::list<std::shared_ptr<DeviceStatusEventListener>>> events_;
61     std::map<int32_t, std::list<std::shared_ptr<DeviceStatusEventListener>>> eventOnces_;
62 };
63 } // namespace DeviceStatus
64 } // namespace Msdp
65 } // namespace OHOS
66 #endif // DEVICESTATUS_EVENT_H
67