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/base/namespace.h>
23 #include <meta/ext/object_container.h>
24 #include <meta/interface/model/intf_object_provider.h>
25
META_BEGIN_NAMESPACE()26 META_BEGIN_NAMESPACE()
27
28 class CompositeObjectProvider : public IntroduceInterfaces<CommonObjectContainerFwd, IObjectProvider> {
29 META_OBJECT(
30 CompositeObjectProvider, ClassId::CompositeObjectProvider, IntroduceInterfaces, ClassId::ObjectFlatContainer)
31 public:
32 ~CompositeObjectProvider() override;
33 CompositeObjectProvider();
34 META_NO_COPY_MOVE(CompositeObjectProvider)
35
36 bool Build(const IMetadata::Ptr&) override;
37
38 IObject::Ptr CreateObject(const DataModelIndex& index) override;
39 bool DisposeObject(const META_NS::IObject::Ptr& item) override;
40 size_t GetObjectCount(const DataModelIndex& index) const override;
41
42 META_BEGIN_STATIC_DATA()
43 META_STATIC_EVENT_DATA(IObjectProvider, IOnDataAdded, OnDataAdded)
44 META_STATIC_EVENT_DATA(IObjectProvider, IOnDataRemoved, OnDataRemoved)
45 META_STATIC_EVENT_DATA(IObjectProvider, IOnDataMoved, OnDataMoved)
46 META_STATIC_PROPERTY_DATA(IObjectProvider, size_t, CacheHint, 10)
47 META_END_STATIC_DATA()
48 META_IMPLEMENT_EVENT(IOnDataAdded, OnDataAdded)
49 META_IMPLEMENT_EVENT(IOnDataRemoved, OnDataRemoved)
50 META_IMPLEMENT_EVENT(IOnDataMoved, OnDataMoved)
51 META_IMPLEMENT_PROPERTY(size_t, CacheHint)
52
53 private:
54 void OnAddedProviderData(const IObjectProvider::Ptr& provider, DataModelIndex base, size_t count);
55 void OnRemovedProviderData(const IObjectProvider::Ptr& provider, DataModelIndex base, size_t count);
56 void OnMovedProviderData(
57 const IObjectProvider::Ptr& provider, DataModelIndex from, size_t count, DataModelIndex to);
58
59 IObjectProvider* FindProvider(size_t& index) const;
60 size_t CalculateIndex(const IObjectProvider::Ptr& provider, size_t localIndex) const;
61 size_t CalculateIndexBase(size_t provider) const;
62
63 void OnProviderChanged(const ChildChangedInfo& info);
64 void OnProviderAdded(const ChildChangedInfo& info);
65 void OnProviderRemoved(const ChildChangedInfo& info);
66 void OnProviderMoved(const ChildChangedInfo& info);
67
68 private:
69 BASE_NS::unordered_map<const IObject*, IObjectProvider*> objects_;
70 };
71
72 META_END_NAMESPACE()
73
74 #endif
75