iOS:add ScrollViewDelegate for scroller,list and flowlayout

doric-iOS/Pod/Classes/Doric.h

@@ -28,4 +28,5 @@
 #import "DoricPromise.h"
 #import "DoricLibrary.h"
 #import "DoricNativePlugin.h"
-#import "DoricMonitorProtocol.h"
+#import "DoricMonitorProtocol.h"
+#import "DoricScrollViewDelegate.h"

doric-iOS/Pod/Classes/DoricScrollViewDelegate.h

@@ -0,0 +1,9 @@
+//
+// Created by pengfei.zhou on 2020/2/13.
+//
+
+#import <Foundation/Foundation.h>
+
+@protocol DoricScrollViewDelegate <NSObject>
+- (void)scrollViewDidScroll:(UIScrollView *)scrollView;
+@end

doric-iOS/Pod/Classes/Shader/DoricFlowLayoutNode.h

@@ -19,6 +19,8 @@
 
 #import <Foundation/Foundation.h>
 #import "DoricSuperNode.h"
+#import "DoricScrollViewDelegate.h"
 
 @interface DoricFlowLayoutNode : DoricSuperNode<UICollectionView *>
+@property(nonatomic, weak, nullable) id <DoricScrollViewDelegate> delegate;
 @end

doric-iOS/Pod/Classes/Shader/DoricFlowLayoutNode.m

@@ -369,4 +369,7 @@ - (NSInteger)doricFlowLayoutColumnCount {
     return self.columnCount;
 }
 
+- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
+    [self.delegate scrollViewDidScroll:scrollView];
+}
 @end

doric-iOS/Pod/Classes/Shader/DoricListNode.h

@@ -19,6 +19,8 @@
 
 #import <Foundation/Foundation.h>
 #import "DoricSuperNode.h"
+#import "DoricScrollViewDelegate.h"
 
 @interface DoricListNode : DoricSuperNode<UITableView *>
+@property(nonatomic, weak, nullable) id <DoricScrollViewDelegate> delegate;
 @end

doric-iOS/Pod/Classes/Shader/DoricListNode.m

@@ -249,4 +249,7 @@ - (DoricViewNode *)subNodeWithViewId:(NSString *)viewId {
     return ret;
 }
 
+- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
+    [self.delegate scrollViewDidScroll:scrollView];
+}
 @end

doric-iOS/Pod/Classes/Shader/DoricScrollerNode.h

@@ -21,10 +21,12 @@
 //
 #import <Foundation/Foundation.h>
 #import "DoricSuperNode.h"
+#import "DoricScrollViewDelegate.h"
 
 @interface DoricScrollView : UIScrollView
 @property(nonatomic, strong) UIView *contentView;
 @end
 
 @interface DoricScrollerNode : DoricSuperNode<DoricScrollView *>
+@property(nonatomic, weak, nullable) id <DoricScrollViewDelegate> delegate;
 @end

doric-iOS/Pod/Classes/Shader/DoricScrollerNode.m

@@ -47,7 +47,7 @@ - (void)layoutSelf:(CGSize)targetSize {
 
 @end
 
-@interface DoricScrollerNode ()
+@interface DoricScrollerNode () <UIScrollViewDelegate>
 @property(nonatomic, strong) DoricViewNode *childNode;
 @property(nonatomic, copy) NSString *childViewId;
 @end
@@ -55,6 +55,7 @@ @interface DoricScrollerNode ()
 @implementation DoricScrollerNode
 - (DoricScrollView *)build {
     return [[DoricScrollView new] also:^(DoricScrollView *it) {
+        it.delegate = self;
         if (@available(iOS 11, *)) {
             it.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
         }
@@ -123,4 +124,7 @@ - (DoricViewNode *)subNodeWithViewId:(NSString *)viewId {
     }
     return nil;
 }
+- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
+    [self.delegate scrollViewDidScroll:scrollView];
+}
 @end