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_SYNTAX_FOR_EACH_MODEL_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_SYNTAX_FOR_EACH_MODEL_H 18 19 #include <cstdint> 20 #include <functional> 21 #include <list> 22 #include <string> 23 #include <vector> 24 #include <memory> 25 26 #include "base/utils/macros.h" 27 28 namespace OHOS::Ace { 29 30 struct ForEachFunc { 31 std::function<std::vector<std::string>()> idGenFunc_; 32 std::function<void(int32_t index)> itemGenFunc_; 33 }; 34 35 class ACE_EXPORT ForEachModel { 36 public: 37 static ForEachModel* GetInstance(); 38 virtual ~ForEachModel() = default; 39 40 virtual void Pop() = 0; 41 42 // classic / full update code path 43 virtual void Create(const std::string& compilerGenId, const ForEachFunc& ForEachFunc) = 0; 44 45 // Only implemented by ForEachModelNG 46 virtual void Create() = 0; 47 48 virtual const std::list<std::string>& GetCurrentIdList(int32_t nodeId) = 0; 49 virtual void SetNewIds(std::list<std::string>&& newIds) = 0; 50 51 virtual void CreateNewChildStart(const std::string& id) = 0; 52 virtual void CreateNewChildFinish(const std::string& id) = 0; 53 54 private: 55 static std::unique_ptr<ForEachModel> instance; 56 57 }; 58 } // namespace OHOS::Ace::NG 59 60 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_SYNTAX_FOR_EACH_H 61