1 /* 2 * Copyright (c) 2022-2024 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_NG_SYNTAX_FOR_EACH_NODE_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_SYNTAX_FOR_EACH_NODE_H 18 19 #include <cstdint> 20 #include <list> 21 #include <string> 22 #include <type_traits> 23 24 #include "base/utils/macros.h" 25 #include "core/components_ng/base/ui_node.h" 26 #include "core/components_ng/syntax/for_each_base_node.h" 27 #include "core/components_v2/inspector/inspector_constants.h" 28 29 namespace OHOS::Ace::NG { 30 31 class ACE_EXPORT ForEachNode : public ForEachBaseNode { 32 DECLARE_ACE_TYPE(ForEachNode, ForEachBaseNode); 33 34 public: 35 static RefPtr<ForEachNode> GetOrCreateForEachNode(int32_t nodeId); 36 static RefPtr<ForEachNode> GetOrCreateRepeatNode(int32_t nodeId); 37 ForEachNode(int32_t nodeId)38 explicit ForEachNode(int32_t nodeId) : ForEachBaseNode(V2::JS_FOR_EACH_ETS_TAG, nodeId) {} 39 40 ~ForEachNode() override = default; 41 IsAtomicNode()42 bool IsAtomicNode() const override 43 { 44 return false; 45 } 46 47 void CreateTempItems(); 48 49 void CollectRemovingIds(std::list<int32_t>& removedElmtId); 50 51 void CompareAndUpdateChildren(); 52 53 void FlushUpdateAndMarkDirty() override; 54 55 // RepeatNode only 56 void FinishRepeatRender(std::list<int32_t>& removedElmtId); 57 58 // RepeatNode only 59 void MoveChild(uint32_t fromIndex); 60 GetTempIds()61 const std::list<std::string>& GetTempIds() const 62 { 63 return tempIds_; 64 } 65 SetIds(std::list<std::string> && ids)66 void SetIds(std::list<std::string>&& ids) 67 { 68 ids_ = std::move(ids); 69 } 70 71 void SetItemDragHandler(std::function<void(int32_t)>&& onLongPress, std::function<void(int32_t)>&& onDragStart, 72 std::function<void(int32_t, int32_t)>&& onMoveThrough, std::function<void(int32_t)>&& onDrop); 73 void SetOnMove(std::function<void(int32_t, int32_t)>&& onMove); 74 void MoveData(int32_t from, int32_t to) override; 75 RefPtr<FrameNode> GetFrameNode(int32_t index) override; 76 void InitDragManager(const RefPtr<UINode>& childNode); 77 void InitAllChildrenDragManager(bool init); 78 void MappingChildWithId(std::unordered_set<std::string>& oldIdsSet, std::list<RefPtr<UINode>>& additionalChildComps, 79 std::map<std::string, RefPtr<UINode>>& oldNodeByIdMap); 80 private: 81 std::list<std::string> ids_; 82 83 // temp items use to compare each update. 84 std::list<std::string> tempIds_; 85 std::list<RefPtr<UINode>> tempChildren_; 86 std::unordered_set<std::string> tempOldIdsSet_; 87 88 // create map id -> Node 89 std::map<std::string, RefPtr<UINode>> oldNodeByIdMap_; 90 91 // RepeatNode only 92 std::vector<RefPtr<UINode>> tempChildrenOfRepeat_; 93 94 // true when this is actually RepeatNode (not "ForEach") 95 bool isThisRepeatNode_ = false; 96 97 ACE_DISALLOW_COPY_AND_MOVE(ForEachNode); 98 }; 99 100 } // namespace OHOS::Ace::NG 101 102 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_SYNTAX_FOR_EACH_NODE_H 103