1 /* 2 * Copyright (c) 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 FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERNS_REFRESH_EVENT_HUB_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERNS_REFRESH_EVENT_HUB_H 18 19 #include "frameworks/base/memory/ace_type.h" 20 #include "frameworks/core/components_ng/event/event_hub.h" 21 22 namespace OHOS::Ace::NG { 23 24 using StateChangeEvent = std::function<void(const int32_t)>; 25 using ChangeEvent = std::function<void(const std::string)>; 26 using RefreshingEvent = std::function<void()>; 27 28 class RefreshEventHub : public EventHub { 29 DECLARE_ACE_TYPE(RefreshEventHub, EventHub) 30 31 public: 32 RefreshEventHub() = default; 33 ~RefreshEventHub() override = default; 34 SetOnStateChange(StateChangeEvent && stateChange)35 void SetOnStateChange(StateChangeEvent&& stateChange) 36 { 37 stateChange_ = std::move(stateChange); 38 } 39 FireOnStateChange(const int32_t value)40 void FireOnStateChange(const int32_t value) const 41 { 42 if (stateChange_) { 43 stateChange_(value); 44 } 45 } SetOnRefreshing(RefreshingEvent && refreshing)46 void SetOnRefreshing(RefreshingEvent&& refreshing) 47 { 48 refreshing_ = std::move(refreshing); 49 } 50 FireOnRefreshing()51 void FireOnRefreshing() const 52 { 53 if (refreshing_) { 54 refreshing_(); 55 } 56 } 57 SetChangeEvent(ChangeEvent && changeEvent)58 void SetChangeEvent(ChangeEvent&& changeEvent) 59 { 60 changeEvent_ = std::move(changeEvent); 61 } 62 FireChangeEvent(const std::string & value)63 void FireChangeEvent(const std::string& value) const 64 { 65 if (changeEvent_) { 66 changeEvent_(value); 67 } 68 } 69 70 private: 71 StateChangeEvent stateChange_; 72 RefreshingEvent refreshing_; 73 ChangeEvent changeEvent_; 74 ACE_DISALLOW_COPY_AND_MOVE(RefreshEventHub); 75 }; 76 } // namespace OHOS::Ace::NG 77 78 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERNS_REFRESH_EVENT_HUB_H