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 TELEPHONY_OBSERVER_CLIENT_H 17 #define TELEPHONY_OBSERVER_CLIENT_H 18 19 #include <cstdint> 20 #include <iremote_object.h> 21 #include <singleton.h> 22 23 #include "i_telephony_state_notify.h" 24 25 namespace OHOS { 26 namespace Telephony { 27 class TelephonyObserverClient : public DelayedRefSingleton<TelephonyObserverClient> { 28 DECLARE_DELAYED_REF_SINGLETON(TelephonyObserverClient); 29 30 public: 31 /** 32 * @brief Add state observer. 33 * 34 * @param telephonyObserver Indicates the TelephonyObserverBroker. 35 * @param slotId Indicates the slot identification. 36 * @param mask Indicates the event type mask. 37 * @param isUpdate Whether to update data immediately. 38 * @return Return 0 if add succeed, others if remove failed. 39 */ 40 int32_t AddStateObserver(const sptr<TelephonyObserverBroker> &telephonyObserver, 41 int32_t slotId, uint32_t mask, bool isUpdate); 42 43 /** 44 * @brief Remove state observer. 45 * 46 * @param slotId Indicates the slot identification. 47 * @param mask Indicates event type mask. 48 * @return Return 0 if remove successful, others if remove failed. 49 */ 50 int32_t RemoveStateObserver(int32_t slotId, uint32_t mask); 51 52 /** 53 * @brief Get the state registry proxy. 54 * 55 * @return Return the ITelephonyStateNotify interface. 56 */ 57 sptr<ITelephonyStateNotify> GetProxy(); 58 59 private: 60 class StateRegistryDeathRecipient : public IRemoteObject::DeathRecipient { 61 public: StateRegistryDeathRecipient(TelephonyObserverClient & client)62 explicit StateRegistryDeathRecipient(TelephonyObserverClient &client) : client_(client) {} 63 ~StateRegistryDeathRecipient() override = default; OnRemoteDied(const wptr<IRemoteObject> & remote)64 void OnRemoteDied(const wptr<IRemoteObject> &remote) override 65 { 66 client_.OnRemoteDied(remote); 67 } 68 69 private: 70 TelephonyObserverClient &client_; 71 }; 72 73 void OnRemoteDied(const wptr<IRemoteObject> &remote); 74 75 private: 76 std::mutex mutexProxy_; 77 sptr<ITelephonyStateNotify> proxy_ {nullptr}; 78 sptr<IRemoteObject::DeathRecipient> deathRecipient_ {nullptr}; 79 }; 80 } // namespace Telephony 81 } // namespace OHOS 82 #endif // TELEPHONY_OBSERVER_CLIENT_H 83