1 /* 2 * Copyright (c) 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_NG_PATTERNS_STAGE_STAGE_PATTERN_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERNS_STAGE_STAGE_PATTERN_H 18 19 #include "stage_layout_algorithm.h" 20 21 #include "base/utils/noncopyable.h" 22 #include "core/components_ng/pattern/pattern.h" 23 #include "core/components_ng/pattern/stage/stage_manager.h" 24 25 namespace OHOS::Ace::NG { 26 // StagePattern is the base class for root render node to perform page switch. 27 class ACE_EXPORT StagePattern : public Pattern { 28 DECLARE_ACE_TYPE(StagePattern, Pattern); 29 30 public: 31 StagePattern() = default; 32 ~StagePattern() override = default; 33 IsMeasureBoundary()34 bool IsMeasureBoundary() const override 35 { 36 return true; 37 } 38 IsAtomicNode()39 bool IsAtomicNode() const override 40 { 41 return false; 42 } 43 44 void OnAttachToFrameNode() override; 45 OnRebuildFrame()46 void OnRebuildFrame() override 47 { 48 if (onRebuildFrameCallback_) { 49 onRebuildFrameCallback_(); 50 } 51 } 52 SetOnRebuildFrameCallback(std::function<void ()> && callback)53 void SetOnRebuildFrameCallback(std::function<void()>&& callback) 54 { 55 onRebuildFrameCallback_ = std::move(callback); 56 } 57 58 private: 59 std::function<void()> onRebuildFrameCallback_; 60 int32_t currentPageIndex_ = 0; 61 friend class StageManager; 62 63 ACE_DISALLOW_COPY_AND_MOVE(StagePattern); 64 }; 65 } // namespace OHOS::Ace::NG 66 67 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERNS_STAGE_STAGE_PATTERN_H 68