1 /* 2 * Copyright (c) 2021-2022 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_EVENTHANDLER_FRAMEWORKS_NAPI_INCLUDE_JS_EMITTER_H 17 #define BASE_EVENTHANDLER_FRAMEWORKS_NAPI_INCLUDE_JS_EMITTER_H 18 19 #include <map> 20 #include <memory> 21 #include <string> 22 #include <vector> 23 24 #include "event_handler.h" 25 #include "event_runner.h" 26 #include "event_queue.h" 27 #include "inner_event.h" 28 29 #include "napi/native_api.h" 30 #include "napi/native_node_api.h" 31 32 namespace OHOS { 33 namespace AppExecFwk { 34 using Priority = EventQueue::Priority; 35 static const int32_t ARGC_NUM = 2; 36 static const int32_t NAPI_VALUE_STRING_LEN = 10240; 37 class EventHandlerInstance : public EventHandler { 38 public: 39 EventHandlerInstance(const std::shared_ptr<EventRunner>& runner); 40 static std::shared_ptr<EventHandlerInstance> GetInstance(); 41 ~EventHandlerInstance(); 42 void ProcessEvent(const InnerEvent::Pointer& event) override; 43 }; 44 45 enum class DataType: uint32_t { 46 BOOL = 0, 47 INT, 48 STRING, 49 }; 50 51 struct Val { 52 DataType type; 53 54 union { 55 bool bValue; 56 int32_t nValue; 57 char cValue[NAPI_VALUE_STRING_LEN] = {0}; 58 } value; 59 }; 60 61 struct AsyncCallbackInfo { 62 napi_env env; 63 bool once = false; 64 bool isDeleted = false; 65 bool processed = false; 66 napi_ref callback = 0; 67 }; 68 69 using EventData = std::map<std::string, Val>; 70 struct EventDataWorker { 71 EventData data; 72 AsyncCallbackInfo* callbackInfo; 73 }; 74 75 napi_value EmitterInit(napi_env env, napi_value exports); 76 napi_value JS_On(napi_env env, napi_callback_info cbinfo); 77 napi_value JS_Off(napi_env env, napi_callback_info cbinfo); 78 napi_value JS_Once(napi_env env, napi_callback_info cbinfo); 79 napi_value JS_Emit(napi_env env, napi_callback_info cbinfo); 80 } // namespace AppExecFwk 81 } // namespace OHOS 82 83 #endif // BASE_EVENTHANDLER_FRAMEWORKS_NAPI_INCLUDE_JS_EMITTER_H 84