feat(ios): nested scroll api support

renderer/native/ios/renderer/component/listview/HippyNextBaseListViewManager.m

@@ -46,6 +46,12 @@ @implementation HippyNextBaseListViewManager
 HIPPY_EXPORT_VIEW_PROPERTY(showScrollIndicator, BOOL)
 HIPPY_EXPORT_VIEW_PROPERTY(scrollEnabled, BOOL)
 HIPPY_EXPORT_VIEW_PROPERTY(horizontal, BOOL)
+HIPPY_EXPORT_VIEW_PROPERTY(nestedScrollPriority, HippyNestedScrollPriority)
+HIPPY_EXPORT_VIEW_PROPERTY(nestedScrollTopPriority, HippyNestedScrollPriority)
+HIPPY_EXPORT_VIEW_PROPERTY(nestedScrollLeftPriority, HippyNestedScrollPriority)
+HIPPY_EXPORT_VIEW_PROPERTY(nestedScrollBottomPriority, HippyNestedScrollPriority)
+HIPPY_EXPORT_VIEW_PROPERTY(nestedScrollRightPriority, HippyNestedScrollPriority)
+
 
 - (UIView *)view {
     return [[HippyNextBaseListView alloc] init];

renderer/native/ios/renderer/component/listview/HippyNextListTableView.h

@@ -21,6 +21,7 @@
  */
 
 #import <UIKit/UIKit.h>
+#import "HippyScrollView.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
@@ -35,8 +36,11 @@ NS_ASSUME_NONNULL_BEGIN
 
 @end
 
-@interface HippyNextListTableView : UICollectionView
 
+/// Custom tableView (collectionView) of Hippy
+@interface HippyNextListTableView : UICollectionView <HippyNestedScrollProtocol>
+
+/// Layout delegate
 @property (nonatomic, weak) id<HippyNextListTableViewLayoutProtocol> layoutDelegate;
 
 @end

renderer/native/ios/renderer/component/listview/HippyNextListTableView.m

@@ -21,9 +21,16 @@
  */
 
 #import "HippyNextListTableView.h"
+#import "HippyScrollView.h"
 
 @implementation HippyNextListTableView
 
+@synthesize lastContentOffset;
+@synthesize activeInnerScrollView;
+@synthesize activeOuterScrollView;
+@synthesize nestedGestureDelegate;
+@synthesize cascadeLockForNestedScroll;
+
 /**
  * we need scroll indicator to be at top
  * indicator is UIImageView type at lower ios version
@@ -45,4 +52,14 @@ - (void)layoutSubviews {
     }
 }
 
+- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer
+shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
+    if (self.nestedGestureDelegate &&
+        gestureRecognizer == self.panGestureRecognizer &&
+        [self.nestedGestureDelegate respondsToSelector:@selector(shouldRecognizeScrollGestureSimultaneouslyWithView:)]) {
+        return [self.nestedGestureDelegate shouldRecognizeScrollGestureSimultaneouslyWithView:otherGestureRecognizer.view];
+    }
+    return NO;
+}
+
 @end

renderer/native/ios/renderer/component/scrollview/HippyNestedScrollCoordinator.h

@@ -0,0 +1,50 @@
+/*!
+ * iOS SDK
+ *
+ * Tencent is pleased to support the open source community by making
+ * Hippy available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company.
+ * All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+#import "HippyScrollView.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// A coordinator responsible for managing scroll priorities
+@interface HippyNestedScrollCoordinator : NSObject <UIScrollViewDelegate, HippyNestedScrollGestureDelegate>
+
+/// Priority of nestedScroll in all direction.
+@property (nonatomic, assign) HippyNestedScrollPriority nestedScrollPriority;
+/// Priority of nestedScroll in specific direction (finger move from bottom to top).
+@property (nonatomic, assign) HippyNestedScrollPriority nestedScrollTopPriority;
+/// Priority of nestedScroll in specific direction (finger move from right to left).
+@property (nonatomic, assign) HippyNestedScrollPriority nestedScrollLeftPriority;
+/// Priority of nestedScroll in specific direction (finger move from top to bottom).
+@property (nonatomic, assign) HippyNestedScrollPriority nestedScrollBottomPriority;
+/// Priority of nestedScroll in specific direction (finger move from left to right).
+@property (nonatomic, assign) HippyNestedScrollPriority nestedScrollRightPriority;
+
+/// The inner scrollable view
+@property (nonatomic, weak) UIScrollView<HippyNestedScrollProtocol> *innerScrollView;
+/// The outer scrollable view
+@property (nonatomic, weak) UIScrollView<HippyNestedScrollProtocol> *outerScrollView;
+
+@end
+
+NS_ASSUME_NONNULL_END