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 FRAMEWORKS_BRIDGE_DECLARATIVE_FRONTEND_JS_VIEW_JS_SCROLLER_H 17 #define FRAMEWORKS_BRIDGE_DECLARATIVE_FRONTEND_JS_VIEW_JS_SCROLLER_H 18 19 #include "base/memory/referenced.h" 20 #include "bridge/declarative_frontend/engine/bindings.h" 21 #include "core/components/scroll/scroll_controller_base.h" 22 #include "core/components/scroll_bar/scroll_proxy.h" 23 24 namespace OHOS::Ace::Framework { 25 26 class JSScroller : public Referenced { 27 public: 28 JSScroller() = default; 29 ~JSScroller() override = default; 30 31 static void JSBind(BindingTarget globalObj); 32 static void Constructor(const JSCallbackInfo& args); 33 static void Destructor(JSScroller* scroller); 34 35 void ScrollTo(const JSCallbackInfo& args); 36 void ScrollEdge(const JSCallbackInfo& args); 37 void Fling(const JSCallbackInfo& args); 38 void ScrollPage(const JSCallbackInfo& args); 39 void CurrentOffset(const JSCallbackInfo& args); 40 void ScrollToIndex(const JSCallbackInfo& args); 41 void ScrollBy(const JSCallbackInfo& args); 42 void IsAtEnd(const JSCallbackInfo& args); 43 void GetItemRect(const JSCallbackInfo& args); 44 GetController()45 const WeakPtr<ScrollControllerBase>& GetController() const 46 { 47 return controllerWeak_; 48 } 49 SetController(const RefPtr<ScrollControllerBase> & controller)50 void SetController(const RefPtr<ScrollControllerBase>& controller) 51 { 52 auto oldController = controllerWeak_.Upgrade(); 53 if (oldController) { 54 ScrollerObserver observer; 55 oldController->SetObserver(observer); 56 } 57 if (controller) { 58 controller->SetObserver(observer_); 59 } 60 controllerWeak_ = controller; 61 } 62 SetScrollBarProxy(const RefPtr<ScrollProxy> & proxy)63 void SetScrollBarProxy(const RefPtr<ScrollProxy>& proxy) 64 { 65 scrollBarProxyWeak_ = proxy; 66 } 67 GetScrollBarProxy()68 RefPtr<ScrollProxy> GetScrollBarProxy() 69 { 70 return scrollBarProxyWeak_.Upgrade(); 71 } 72 73 JSRef<JSObject> CreateRectangle(const Rect& info); 74 SetInstanceId(int32_t instanceId)75 void SetInstanceId(int32_t instanceId) 76 { 77 instanceId_ = instanceId; 78 } 79 GetInstanceId()80 int32_t GetInstanceId() 81 { 82 return instanceId_; 83 } 84 SetObserver(const ScrollerObserver & observer)85 void SetObserver(const ScrollerObserver& observer) 86 { 87 observer_ = observer; 88 auto controller = controllerWeak_.Upgrade(); 89 if (controller) { 90 controller->SetObserver(observer); 91 } 92 } 93 94 private: 95 bool ParseCurveParams(RefPtr<Curve>& curve, const JSRef<JSVal>& jsValue); 96 97 WeakPtr<ScrollControllerBase> controllerWeak_; 98 WeakPtr<ScrollProxy> scrollBarProxyWeak_; 99 100 ACE_DISALLOW_COPY_AND_MOVE(JSScroller); 101 102 int32_t instanceId_ = INSTANCE_ID_UNDEFINED; 103 104 ScrollerObserver observer_; 105 }; 106 107 } // namespace OHOS::Ace::Framework 108 #endif // FRAMEWORKS_BRIDGE_DECLARATIVE_FRONTEND_JS_VIEW_JS_SCROLLER_H 109