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
META_BEGIN_NAMESPACE()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