1 /*
2  * Copyright (c) 2021-2022 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_V2_INDEXER_INDEXER_ELEMENT_H
17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_V2_INDEXER_INDEXER_ELEMENT_H
18 
19 #include "core/focus/focus_node.h"
20 #include "core/pipeline/base/component_group_element.h"
21 #include "core/components_v2/indexer/render_indexer.h"
22 #include "core/components_v2/indexer/render_indexer_item.h"
23 
24 
25 namespace OHOS::Ace::V2 {
26 class IndexerElement : public ComponentGroupElement, public FocusNode {
27     DECLARE_ACE_TYPE(IndexerElement, ComponentGroupElement, FocusNode);
28 
29 public:
30     void PerformBuild() override;
31     bool OnKeyEvent(const KeyEvent& keyEvent) override;
32     bool IndexMoveUp();
33     bool IndexMoveDown();
CanUpdate(const RefPtr<Component> & newComponent)34     bool CanUpdate(const RefPtr<Component>& newComponent) override
35     {
36         auto context = context_.Upgrade();
37         if (context && context->GetIsDeclarative()) {
38             return false;
39         }
40         return true;
41     }
42 
43 private:
44     WeakPtr<RenderIndexerItem> prevFocusedItem_;
45 };
46 } // namespace OHOS::Ace::V2
47 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_V2_INDEXER_INDEXER_ELEMENT_H