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_ENGINE_ENGINE_VALUE_H
17 #define META_SRC_ENGINE_ENGINE_VALUE_H
18
19 #include <shared_mutex>
20
21 #include <meta/ext/event_impl.h>
22 #include <meta/ext/implementation_macros.h>
23 #include <meta/ext/minimal_object.h>
24 #include <meta/interface/engine/intf_engine_value.h>
25 #include <meta/interface/interface_helpers.h>
26 #include <meta/interface/intf_lockable.h>
27 #include <meta/interface/intf_notify_on_change.h>
28 #include <meta/interface/property/intf_stack_resetable.h>
29
META_BEGIN_NAMESPACE()30 META_BEGIN_NAMESPACE()
31
32 namespace Internal {
33
34 META_REGISTER_CLASS(EngineValue, "a8a9c80f-3501-48da-b552-f1f323ee399b", ObjectCategoryBits::NO_CATEGORY)
35
36 class EngineValue : public IntroduceInterfaces<MinimalObject, IEngineValue, INotifyOnChange, ILockable, IStackResetable,
37 IEngineValueInternal> {
38 META_IMPLEMENT_OBJECT_TYPE_INTERFACE(ClassId::EngineValue)
39 public:
40 EngineValue(BASE_NS::string name, IEngineInternalValueAccess::ConstPtr access, const EnginePropertyParams& p);
41
42 AnyReturnValue Sync(EngineSyncDirection) override;
43 bool ResetPendingNotify() override;
44
45 AnyReturnValue SetValue(const IAny& value) override;
46 const IAny& GetValue() const override;
47 bool IsCompatible(const TypeId& id) const override;
48
49 BASE_NS::string GetName() const override;
50
51 void Lock() const override;
52 void Unlock() const override;
53 void LockShared() const override;
54 void UnlockShared() const override;
55
56 ResetResult ProcessOnReset(const IAny& defaultValue) override;
57
58 BASE_NS::shared_ptr<IEvent> EventOnChanged(MetadataQuery) const override;
59
60 private:
61 IEngineInternalValueAccess::ConstPtr GetInternalAccess() const override
62 {
63 return access_;
64 }
65 EnginePropertyParams GetPropertyParams() const override;
66 bool SetPropertyParams(const EnginePropertyParams& p) override;
67 IAny::Ptr CreateAny() const override;
68
69 private:
70 mutable std::shared_mutex mutex_;
71 EnginePropertyParams params_;
72 IEngineInternalValueAccess::ConstPtr access_;
73 bool valueChanged_ {};
74 bool pendingNotify_ {};
75 const BASE_NS::string name_;
76 IAny::Ptr value_;
77 BASE_NS::shared_ptr<EventImpl<IOnChanged>> event_ { new EventImpl<IOnChanged>("OnChanged") };
78 };
79
80 } // namespace Internal
81
82 META_END_NAMESPACE()
83
84 #endif