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_TAB_BAR_TAB_BAR_ELEMENT_H
17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_TAB_BAR_TAB_BAR_ELEMENT_H
18 
19 #include "core/components/box/box_component.h"
20 #include "core/components/box/box_element.h"
21 #include "core/components/tab_bar/tab_bar_component.h"
22 #include "core/components/tab_bar/tab_controller.h"
23 #include "core/focus/focus_node.h"
24 #include "core/pipeline/base/component_group_element.h"
25 
26 namespace OHOS::Ace {
27 
28 class TabBarElement : public ComponentGroupElement, public FocusGroup {
29     DECLARE_ACE_TYPE(TabBarElement, ComponentGroupElement, FocusGroup);
30 
31 public:
32     void UpdateIndex(int32_t index);
33     void UpdateScrollIndicator(double percent, int32_t newIndex, bool needChange);
34     void PerformBuild() override;
35     void Update() override;
36     bool RequestNextFocus(bool vertical, bool reverse, const Rect& rect) override;
GetTabBarComponent()37     RefPtr<TabBarComponent> GetTabBarComponent() const
38     {
39         return tabBar_;
40     }
41 
GetTabController()42     RefPtr<TabController> GetTabController() const
43     {
44         return controller_;
45     }
46 
47 protected:
48     void OnFocus() override;
49     void OnBlur() override;
50 
51 private:
52     RefPtr<RenderNode> CreateRenderNode() override;
53     void UpdateElement(int32_t index);
54 
55     bool vertical_ { false }; // the tab is vertical or not, default value is false
56     std::list<RefPtr<TabBarItemComponent>> tabs_;
57     RefPtr<TabController> controller_;
58     RefPtr<BoxComponent> indicatorStyle_;
59     RefPtr<BoxComponent> focusIndicatorStyle_;
60     RefPtr<TabBarComponent> tabBar_ = nullptr;
61 };
62 
63 } // namespace OHOS::Ace
64 
65 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_TAB_BAR_TAB_BAR_ELEMENT_H
66