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 #ifndef OHOS_APP_DISPATCHER_TASK_TASK_LISTENER_H 16 #define OHOS_APP_DISPATCHER_TASK_TASK_LISTENER_H 17 18 #include "task_stage.h" 19 20 namespace OHOS { 21 namespace AppExecFwk { 22 /** 23 * Listen to events of task execution. 24 */ 25 class TaskListener { 26 public: ~TaskListener()27 virtual ~TaskListener(){}; 28 /** 29 * @brief Called when task stage changed. 30 * @param stage The stage 31 * @return void 32 */ 33 virtual void OnChanged(const TaskStage &stage) = 0; 34 }; 35 } // namespace AppExecFwk 36 } // namespace OHOS 37 #endif 38