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_OBJECT_PROVIDER_BASE_H
17  #define META_SRC_MODEL_OBJECT_PROVIDER_BASE_H
18  
19  #include <meta/interface/model/intf_object_provider.h>
20  
21  #include "../object.h"
22  
23  META_BEGIN_NAMESPACE()
24  
25  META_REGISTER_CLASS(ObjectProviderBase, "13656d27-e228-4fd7-a4ce-5bb051cdaafc", ObjectCategory::NO_CATEGORY);
26  
27  class ObjectProviderBase
28      : public Internal::ObjectFwd<ObjectProviderBase, ClassId::ObjectProviderBase, IModelObjectProvider> {
29  public:
30      ~ObjectProviderBase() override;
31      META_NO_COPY_MOVE(ObjectProviderBase)
32  
33      ObjectProviderBase() = default;
34  
35      IObject::Ptr CreateObject(const DataModelIndex& index) override;
36      bool DisposeObject(const META_NS::IObject::Ptr& item) override;
37      size_t GetObjectCount(const DataModelIndex& index) const override;
38  
39      META_IMPLEMENT_INTERFACE_EVENT(IObjectProvider, IOnDataAdded, OnDataAdded)
40      META_IMPLEMENT_INTERFACE_EVENT(IObjectProvider, IOnDataRemoved, OnDataRemoved)
41      META_IMPLEMENT_INTERFACE_EVENT(IObjectProvider, IOnDataMoved, OnDataMoved)
42  
43      META_IMPLEMENT_INTERFACE_PROPERTY(IObjectProvider, size_t, CacheHint, 10);
44  
45      bool SetDataModel(const IDataModel::Ptr& model) override;
46      IDataModel::Ptr GetDataModel() const override;
47  
48  protected:
49      virtual IObject::Ptr Construct(const IMetadata::Ptr& data);
50  
51  private:
52      void BindProperties(const IObject::Ptr& object, const IMetadata::Ptr& data) const;
53  
54  private:
55      IDataModel::Ptr model_;
56      BASE_NS::vector<IObject::Ptr> recyclebin_;
57  };
58  
59  META_END_NAMESPACE()
60  
61  #endif
62