1 /* 2 * Copyright (c) 2022-2023 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_TABS_TABS_PATTERN_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERNS_TABS_TABS_PATTERN_H 18 19 #include <optional> 20 21 #include "base/geometry/axis.h" 22 #include "base/memory/referenced.h" 23 #include "core/components/common/layout/constants.h" 24 #include "core/components_ng/event/event_hub.h" 25 #include "core/components_ng/pattern/pattern.h" 26 #include "core/components_ng/pattern/tabs/tabs_layout_algorithm.h" 27 #include "core/components_ng/pattern/tabs/tabs_layout_property.h" 28 29 namespace OHOS::Ace::NG { 30 31 class TabsPattern : public Pattern { 32 DECLARE_ACE_TYPE(TabsPattern, Pattern); 33 34 public: 35 using ChangeEvent = std::function<void(int32_t)>; 36 using ChangeEventPtr = std::shared_ptr<ChangeEvent>; 37 38 TabsPattern() = default; 39 ~TabsPattern() override = default; 40 IsAtomicNode()41 bool IsAtomicNode() const override 42 { 43 return false; 44 } 45 CreateLayoutProperty()46 RefPtr<LayoutProperty> CreateLayoutProperty() override 47 { 48 return MakeRefPtr<TabsLayoutProperty>(); 49 } 50 CreateLayoutAlgorithm()51 RefPtr<LayoutAlgorithm> CreateLayoutAlgorithm() override 52 { 53 return MakeRefPtr<TabsLayoutAlgorithm>(); 54 } 55 GetFocusPattern()56 FocusPattern GetFocusPattern() const override 57 { 58 return { FocusType::SCOPE, true }; 59 } 60 61 ScopeFocusAlgorithm GetScopeFocusAlgorithm() override; 62 63 void SetOnChangeEvent(std::function<void(const BaseEventInfo*)>&& event); 64 65 void SetOnTabBarClickEvent(std::function<void(const BaseEventInfo*)>&& event); 66 GetTabBarClickEvent()67 ChangeEventPtr GetTabBarClickEvent() 68 { 69 return onTabBarClickEvent_; 70 } 71 72 void OnModifyDone() override; 73 74 std::string ProvideRestoreInfo() override; 75 76 void OnRestoreInfo(const std::string& restoreInfo) override; 77 78 void SetOnIndexChangeEvent(std::function<void(const BaseEventInfo*)>&& event); 79 80 private: 81 void OnAttachToFrameNode() override; 82 void OnUpdateShowDivider(); 83 WeakPtr<FocusHub> GetNextFocusNode(FocusStep step, const WeakPtr<FocusHub>& currentFocusNode); 84 85 ChangeEventPtr onChangeEvent_; 86 ChangeEventPtr onTabBarClickEvent_; 87 ChangeEventPtr onIndexChangeEvent_; 88 }; 89 90 } // namespace OHOS::Ace::NG 91 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERNS_TABS_TABS_PATTERN_H 92