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 KEY_EVENT_SUBSCRIBER_H 16 #define KEY_EVENT_SUBSCRIBER_H 17 18 #include <algorithm> 19 #include <list> 20 #include <map> 21 #include <memory> 22 #include <mutex> 23 #include <set> 24 #include <thread> 25 #include "key_event.h" 26 #include "key_option.h" 27 #include "singleton.h" 28 #include "uds_server.h" 29 30 namespace OHOS { 31 namespace MMI { 32 class KeyEventSubscriber : public Singleton<KeyEventSubscriber> { 33 public: 34 KeyEventSubscriber() = default; 35 ~KeyEventSubscriber() = default; 36 37 int32_t SubscribeKeyEvent(SessionPtr sess, int32_t subscribeId, 38 const std::shared_ptr<OHOS::MMI::KeyOption> keyOption); 39 int32_t UnSubscribeKeyEvent(SessionPtr sess, int32_t subscribeId); 40 bool SubscribeKeyEvent(std::shared_ptr<OHOS::MMI::KeyEvent> keyEvent); 41 42 private: 43 struct Subscriber { SubscriberSubscriber44 Subscriber(int32_t id, SessionPtr sess, std::shared_ptr<KeyOption> keyOption) 45 : id_(id), sess_(sess), keyOption_(keyOption), timerId_(-1) 46 { 47 } 48 int32_t id_ { -1 }; 49 SessionPtr sess_ { nullptr }; 50 std::shared_ptr<OHOS::MMI::KeyOption> keyOption_ { nullptr }; 51 int32_t timerId_ { -1 }; 52 std::shared_ptr<KeyEvent> keyEvent_ { nullptr }; 53 }; 54 55 private: 56 bool HandleKeyDown(const std::shared_ptr<KeyEvent>& keyEvent); 57 bool HandleKeyUp(const std::shared_ptr<KeyEvent>& keyEvent); 58 bool HandleKeyCanel(const std::shared_ptr<KeyEvent>& keyEvent); 59 60 bool IsPreKeysMatch(const std::set<int32_t>& preKeys, const std::vector<int32_t>& pressedKeys) const; 61 62 void NotifySubscriber(std::shared_ptr<OHOS::MMI::KeyEvent> keyEvent, 63 const std::shared_ptr<Subscriber>& subscriber); 64 65 bool AddTimer(const std::shared_ptr<Subscriber>& subscriber, const std::shared_ptr<KeyEvent>& keyEvent); 66 void ClearTimer(const std::shared_ptr<Subscriber>& subscriber); 67 void OnTimer(const std::shared_ptr<Subscriber> subscriber); 68 void OnSessionDelete(SessionPtr sess); 69 bool InitSessionDeleteCallback(); 70 71 bool CloneKeyEvent(std::shared_ptr<KeyEvent> keyEvent); 72 73 void RemoveKeyCode(int32_t keyCode, std::vector<int32_t>& keyCodes); 74 75 private: 76 std::list<std::shared_ptr<Subscriber>> subscribers_ {}; 77 bool callbackInitialized_ { false }; 78 std::shared_ptr<KeyEvent> keyEvent_ { nullptr }; 79 }; 80 } // namespace MMI 81 } // namespace OHOS 82 #define KeyEventSubscriber_ OHOS::MMI::KeyEventSubscriber::GetInstance() 83 #endif // KEY_EVENT_SUBSCRIBER_H 84