feat:add onScroll and onScrollEnd for list and flowlayout

doric-js/src/widget/flowlayout.ts

@@ -48,6 +48,10 @@ export interface IFlowLayout extends IView {
     onLoadMore?: () => void
 
     loadMoreView?: FlowLayoutItem
+
+    onScroll?: (offset: { x: number, y: number }) => void
+
+    onScrollEnd?: (offset: { x: number, y: number }) => void
 }
 
 export class FlowLayout extends Superview implements IFlowLayout {
@@ -89,6 +93,12 @@ export class FlowLayout extends Superview implements IFlowLayout {
     @Property
     loadMoreView?: FlowLayoutItem
 
+    @Property
+    onScroll?: (offset: { x: number, y: number }) => void
+
+    @Property
+    onScrollEnd?: (offset: { x: number, y: number }) => void
+
     reset() {
         this.cachedViews.clear()
         this.itemCount = 0

doric-js/src/widget/list.ts

@@ -32,11 +32,20 @@ export class ListItem extends Stack implements IListItem {
 
 export interface IList extends IView {
     renderItem: (index: number) => ListItem
+
     itemCount: number
+
     batchCount?: number
+
     onLoadMore?: () => void
+
     loadMore?: boolean
+
     loadMoreView?: ListItem
+
+    onScroll?: (offset: { x: number, y: number }) => void
+
+    onScrollEnd?: (offset: { x: number, y: number }) => void
 }
 
 export class List extends Superview implements IList {
@@ -69,6 +78,12 @@ export class List extends Superview implements IList {
     @Property
     loadMoreView?: ListItem
 
+    @Property
+    onScroll?: (offset: { x: number, y: number }) => void
+
+    @Property
+    onScrollEnd?: (offset: { x: number, y: number }) => void
+
     reset() {
         this.cachedViews.clear()
         this.itemCount = 0