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 SCENE_EXT_ECS_LAZY_PROPERTY_H
17 #define SCENE_EXT_ECS_LAZY_PROPERTY_H
18
19 #include <scene/base/namespace.h>
20 #include <scene/ext/intf_ecs_object.h>
21 #include <scene/ext/intf_ecs_object_access.h>
22 #include <scene/ext/intf_engine_property_init.h>
23 #include <scene/ext/util.h>
24
25 #include <meta/ext/object.h>
26
SCENE_BEGIN_NAMESPACE()27 SCENE_BEGIN_NAMESPACE()
28
29 class EcsLazyProperty
30 : public META_NS::IntroduceInterfaces<META_NS::MetaObject, IEcsObjectAccess, IEnginePropertyInit> {
31 public:
32 bool SetEcsObject(const IEcsObject::Ptr& obj) override
33 {
34 object_ = obj;
35 return object_ != nullptr;
36 }
37 IEcsObject::Ptr GetEcsObject() const override
38 {
39 return object_;
40 }
41 IInternalScene::Ptr GetInternalScene() const
42 {
43 return object_ ? object_->GetScene() : nullptr;
44 }
45 CORE_NS::Entity GetEntity() const
46 {
47 return object_ ? object_->GetEntity() : CORE_NS::Entity {};
48 }
49
50 protected:
51 bool AttachEngineProperty(const META_NS::IProperty::Ptr& p, BASE_NS::string_view path) override
52 {
53 return object_->AttachProperty(p, path).GetResult();
54 }
55 bool InitDynamicProperty(const META_NS::IProperty::Ptr& p, BASE_NS::string_view path) override
56 {
57 return AttachEngineProperty(p, path);
58 }
59
60 protected:
61 IEcsObject::Ptr object_;
62 };
63
64 class NamedSceneObject : public META_NS::IntroduceInterfaces<EcsLazyProperty, META_NS::INamed> {
META_OBJECT_NO_CLASSINFO(NamedSceneObject,IntroduceInterfaces)65 META_OBJECT_NO_CLASSINFO(NamedSceneObject, IntroduceInterfaces)
66
67 META_BEGIN_STATIC_DATA()
68 META_STATIC_FORWARDED_PROPERTY_DATA(META_NS::INamed, BASE_NS::string, Name)
69 META_END_STATIC_DATA()
70
71 META_FORWARD_PROPERTY(BASE_NS::string, Name, EcsNameProperty())
72
73 public:
74 META_NS::IProperty::Ptr EcsNameProperty() const
75 {
76 auto i = interface_cast<META_NS::INamed>(object_);
77 return i ? i->Name() : nullptr;
78 }
79
GetName()80 BASE_NS::string GetName() const override
81 {
82 return META_NS::GetValue(Name());
83 }
84 };
85
86 SCENE_END_NAMESPACE()
87
88 #endif
89