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 META_SRC_MODEL_COMPOSITE_OBJECT_PROVIDER_H 17 #define META_SRC_MODEL_COMPOSITE_OBJECT_PROVIDER_H 18 19 #include <base/containers/unordered_map.h> 20 21 #include <meta/base/interface_macros.h> 22 #include <meta/ext/object_container.h> 23 #include <meta/interface/model/intf_object_provider.h> 24 25 META_BEGIN_NAMESPACE() 26 27 class CompositeObjectProvider 28 : public ObjectFlatContainerFwd<CompositeObjectProvider, ClassId::CompositeObjectProvider, IObjectProvider> { 29 public: 30 ~CompositeObjectProvider() override; 31 CompositeObjectProvider(); 32 META_NO_COPY_MOVE(CompositeObjectProvider) 33 34 bool Build(const IMetadata::Ptr&) override; 35 36 IObject::Ptr CreateObject(const DataModelIndex& index) override; 37 bool DisposeObject(const META_NS::IObject::Ptr& item) override; 38 size_t GetObjectCount(const DataModelIndex& index) const override; 39 40 META_IMPLEMENT_INTERFACE_EVENT(IObjectProvider, IOnDataAdded, OnDataAdded) 41 META_IMPLEMENT_INTERFACE_EVENT(IObjectProvider, IOnDataRemoved, OnDataRemoved) 42 META_IMPLEMENT_INTERFACE_EVENT(IObjectProvider, IOnDataMoved, OnDataMoved) 43 44 META_IMPLEMENT_INTERFACE_PROPERTY(IObjectProvider, size_t, CacheHint, 10); 45 46 private: 47 void OnAddedProviderData(const IObjectProvider::Ptr& provider, DataModelIndex base, size_t count); 48 void OnRemovedProviderData(const IObjectProvider::Ptr& provider, DataModelIndex base, size_t count); 49 void OnMovedProviderData( 50 const IObjectProvider::Ptr& provider, DataModelIndex from, size_t count, DataModelIndex to); 51 52 IObjectProvider* FindProvider(size_t& index) const; 53 size_t CalculateIndex(const IObjectProvider::Ptr& provider, size_t localIndex) const; 54 size_t CalculateIndexBase(size_t provider) const; 55 56 void OnProviderAdded(const ChildChangedInfo& info); 57 void OnProviderRemoved(const ChildChangedInfo& info); 58 void OnProviderMoved(const ChildMovedInfo& info); 59 60 private: 61 BASE_NS::unordered_map<const IObject*, IObjectProvider*> objects_; 62 }; 63 64 META_END_NAMESPACE() 65 66 #endif 67