1 /* 2 * Copyright (c) 2024 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_SYNTAX_REPEAT_MODEL_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_SYNTAX_REPEAT_MODEL_H 18 19 #include <cstdint> 20 #include <functional> 21 #include <list> 22 #include <map> 23 #include <memory> 24 #include <string> 25 26 #include "base/utils/macros.h" 27 28 namespace OHOS::Ace { 29 30 class ACE_EXPORT RepeatVirtualScrollModel { 31 public: 32 RepeatVirtualScrollModel() = default; 33 virtual ~RepeatVirtualScrollModel() = default; 34 35 static RepeatVirtualScrollModel* GetInstance(); 36 virtual void Create( 37 uint32_t totalCount, 38 const std::map<std::string, std::pair<bool, uint32_t>>& templateCachedCountMap, 39 const std::function<void(uint32_t forIndex)>& onCreateNode, 40 const std::function<void(const std::string& fromKey, uint32_t forIndex)>& onUpdateNode, 41 const std::function<std::list<std::string>(uint32_t from, uint32_t to)>& onGetKeys4Range, 42 const std::function<std::list<std::string>(uint32_t from, uint32_t to)>& onGetTypes4Range, 43 const std::function<void(int32_t from, int32_t to)>& onSetActiveRange, 44 bool reusable = true) = 0; 45 virtual void UpdateRenderState(uint32_t totalCount, bool visibleItemsChanged) = 0; 46 virtual void OnMove(std::function<void(int32_t, int32_t)>&& onMove) = 0; 47 virtual void SetCreateByTemplate(bool isCreatedByTemplate) = 0; 48 49 private: 50 static std::unique_ptr<RepeatVirtualScrollModel> instance_; 51 }; 52 } // namespace OHOS::Ace 53 54 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_SYNTAX_REPEAT_H 55