1 /*
2  * Copyright (c) 2021 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_BRIDGE_DECLARATIVE_FRONTEND_COMPONENTS_MULTI_COMPOSED_ELEMENT_H
17 #define FOUNDATION_ACE_FRAMEWORKS_BRIDGE_DECLARATIVE_FRONTEND_COMPONENTS_MULTI_COMPOSED_ELEMENT_H
18 
19 #include <string>
20 
21 #include "base/utils/macros.h"
22 #include "core/pipeline/base/composed_element.h"
23 
24 namespace OHOS::Ace {
25 // ComposedElement just maintain a child element may have render node.
26 
27 class ACE_EXPORT MultiComposedElement : public ComposedElement {
28     DECLARE_ACE_TYPE(MultiComposedElement, ComposedElement);
29 
30 public:
MultiComposedElement(const ComposeId & id)31     explicit MultiComposedElement(const ComposeId& id) : ComposedElement(id) {}
32     ~MultiComposedElement() override = default;
33 
34     void PerformBuild() override;
35     bool CanUpdate(const RefPtr<Component>& newComponent) override;
36 
37     virtual void UpdateChildren(const std::list<RefPtr<Component>>& newComponents);
38     void UpdateChildrenForRebuild(const std::list<RefPtr<Component>>& newComponents);
39 };
40 
41 } // namespace OHOS::Ace
42 #endif // FOUNDATION_ACE_FRAMEWORKS_BRIDGE_DECLARATIVE_FRONTEND_COMPONENTS_MULTI_COMPOSED_ELEMENT_H
43