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_RESOURCE_RESOURCE_PLACEHOLDER_H
17 #define META_SRC_RESOURCE_RESOURCE_PLACEHOLDER_H
18
19 #include <meta/ext/implementation_macros.h>
20 #include <meta/ext/minimal_object.h>
21 #include <meta/ext/object.h>
22 #include <meta/ext/serialization/serializer.h>
23 #include <meta/interface/resource/intf_resource.h>
24 #include <meta/interface/resource/intf_resource_consumer.h>
25 #include <meta/interface/serialization/intf_serializable.h>
26
META_BEGIN_NAMESPACE()27 META_BEGIN_NAMESPACE()
28
29 class ResourcePlaceholder : public IntroduceInterfaces<BaseObject, ISerializable, CORE_NS::ISetResourceId> {
30 META_OBJECT(ResourcePlaceholder, ClassId::ResourcePlaceholder, IntroduceInterfaces)
31 public:
32 explicit ResourcePlaceholder(CORE_NS::ResourceId id = {}) : rid_(BASE_NS::move(id)) {}
33
34 ReturnError Export(IExportContext& c) const override
35 {
36 return Serializer(c) & NamedValue("resourceId.name", rid_.name) & NamedValue("resourceId.group", rid_.group);
37 }
38 ReturnError Import(IImportContext& c) override
39 {
40 Serializer s(c);
41 if (s & NamedValue("resourceId.name", rid_.name) & NamedValue("resourceId.group", rid_.group)) {
42 if (auto ri = interface_cast<IResourceConsumer>(c.Context())) {
43 if (auto rman = ri->GetResourceManager()) {
44 if (auto res = rman->GetResource(rid_, c.UserContext())) {
45 return c.SubstituteThis(interface_pointer_cast<IObject>(res));
46 }
47 } else {
48 CORE_LOG_W("No resource manager set when importing [%s]", rid_.ToString().c_str());
49 }
50 }
51 }
52 CORE_LOG_W("Failed to import resource");
53 return GenericError::FAIL;
54 }
55 void SetResourceId(CORE_NS::ResourceId id) override
56 {
57 rid_ = BASE_NS::move(id);
58 }
59
60 private:
61 CORE_NS::ResourceId rid_;
62 };
63
64 META_END_NAMESPACE()
65
66 #endif
67