1 /*
2  * Copyright (c) 2023 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 FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERNS_COMMON_VIEW_COMMON_VIEW_MODEL_H
17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERNS_COMMON_VIEW_COMMON_VIEW_MODEL_H
18 
19 #include <mutex>
20 #include "base/memory/ace_type.h"
21 
22 namespace OHOS::Ace {
23 class CommonViewModel {
24 public:
25     static CommonViewModel* GetInstance();
26     virtual ~CommonViewModel() = default;
27 
28     virtual void Create(bool isLayoutNode) = 0;
29 
30 private:
31     static std::unique_ptr<CommonViewModel> instance_;
32     static std::mutex mutex_;
33 };
34 } // namespace OHOS::Ace
35 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERNS_COMMON_VIEW_COMMON_VIEW_MODEL_H
36