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 #ifndef META_SRC_ENGINE_ENGINE_VALUE_H
16 #define META_SRC_ENGINE_ENGINE_VALUE_H
17
18 #include <shared_mutex>
19
20 #include <meta/ext/event_impl.h>
21 #include <meta/ext/minimal_object.h>
22 #include <meta/interface/engine/intf_engine_value.h>
23 #include <meta/interface/interface_helpers.h>
24 #include <meta/interface/intf_lockable.h>
25 #include <meta/interface/intf_notify_on_change.h>
26 #include <meta/interface/property/intf_stack_resetable.h>
27
META_BEGIN_NAMESPACE()28 META_BEGIN_NAMESPACE()
29
30 namespace Internal {
31
32 class IEngineValueInternal : public CORE_NS::IInterface {
33 META_INTERFACE(CORE_NS::IInterface, IEngineValueInternal, "86afd68c-7924-46b8-8bb8-aeace0029945")
34 public:
35 virtual IEngineInternalValueAccess::ConstPtr GetInternalAccess() const = 0;
36 virtual EnginePropertyParams GetPropertyParams() const = 0;
37 virtual bool SetPropertyParams(const EnginePropertyParams& p) = 0;
38 };
39
40 META_REGISTER_CLASS(EngineValue, "a8a9c80f-3501-48da-b552-f1f323ee399b", ObjectCategoryBits::NO_CATEGORY)
41
42 class EngineValue : public MinimalObject<ClassId::EngineValue, IEngineValue, INotifyOnChange, ILockable,
43 IStackResetable, IEngineValueInternal> {
44 public:
45 EngineValue(BASE_NS::string name, IEngineInternalValueAccess::ConstPtr access, const EnginePropertyParams& p);
46
47 AnyReturnValue Sync(EngineSyncDirection) override;
48
49 AnyReturnValue SetValue(const IAny& value) override;
50 const IAny& GetValue() const override;
51 bool IsCompatible(const TypeId& id) const override;
52
53 BASE_NS::string GetName() const override;
54
55 void Lock() const override;
56 void Unlock() const override;
57 void LockShared() const override;
58 void UnlockShared() const override;
59
60 ResetResult ProcessOnReset(const IAny& defaultValue) override;
61
62 BASE_NS::shared_ptr<IEvent> EventOnChanged() const override;
63
64 private:
65 IEngineInternalValueAccess::ConstPtr GetInternalAccess() const override
66 {
67 return access_;
68 }
69 EnginePropertyParams GetPropertyParams() const override;
70 bool SetPropertyParams(const EnginePropertyParams& p) override;
71
72 private:
73 mutable std::shared_mutex mutex_;
74 EnginePropertyParams params_;
75 IEngineInternalValueAccess::ConstPtr access_;
76 bool valueChanged_ {};
77 const BASE_NS::string name_;
78 IAny::Ptr value_;
79 BASE_NS::shared_ptr<EventImpl<IOnChanged>> event_ { new EventImpl<IOnChanged>("OnChanged") };
80 };
81
82 } // namespace Internal
83
84 META_END_NAMESPACE()
85
86 #endif