react-native#ViewabilityConfig TypeScript Examples

The following examples show how to use react-native#ViewabilityConfig. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: IterableInboxMessageList.tsx    From react-native-sdk with MIT License 5 votes vote down vote up 
IterableInboxMessageList = ({
   dataModel,
   rowViewModels,
   customizations,
   messageListItemLayout,
   deleteRow,
   handleMessageSelect,
   updateVisibleMessageImpressions,
   contentWidth,
   isPortrait
}: MessageListProps) => {
   const [swiping, setSwiping] = useState<boolean>(false)
   const flatListRef = useRef<FlatList>(null)

   function renderRowViewModel(rowViewModel: InboxRowViewModel, index: number, last: boolean) {
      return (
         <IterableInboxMessageCell
            key={rowViewModel.inAppMessage.messageId}
            index={index}
            last={last}
            dataModel={dataModel}
            rowViewModel={rowViewModel}
            customizations={customizations}
            swipingCheck={(swiping: boolean) => setSwiping(swiping)}
            messageListItemLayout={messageListItemLayout}
            deleteRow={(messageId: string) => deleteRow(messageId)}
            handleMessageSelect={(messageId: string, index: number) => handleMessageSelect(messageId, index)}
            contentWidth={contentWidth}
            isPortrait={isPortrait}
         />
      )
   }

   function getRowInfosFromViewTokens(viewTokens: Array<ViewToken>): Array<InboxImpressionRowInfo> {
      return viewTokens.map(
         function(viewToken) {
            var inAppMessage = IterableInAppMessage.fromViewToken(viewToken)
            
            const impression = {
               messageId: inAppMessage.messageId,
               silentInbox: inAppMessage.isSilentInbox()
            } as InboxImpressionRowInfo

            return impression
         }
      )
   }

   const inboxSessionViewabilityConfig: ViewabilityConfig = {
      minimumViewTime: 500,
      itemVisiblePercentThreshold: 100,
      waitForInteraction: false
   }

   const inboxSessionItemsChanged = useCallback((
      (info: {viewableItems: Array<ViewToken>, changed: Array<ViewToken>}) => {
         const rowInfos = getRowInfosFromViewTokens(info.viewableItems)

         updateVisibleMessageImpressions(rowInfos)
      }
   ), [])

   return (
      <FlatList
         ref={flatListRef}
         scrollEnabled={!swiping}
         data={rowViewModels}
         renderItem={({ item, index }: { item: InboxRowViewModel, index: number }) => renderRowViewModel(item, index, index === rowViewModels.length - 1)}
         keyExtractor={(item: InboxRowViewModel) => item.inAppMessage.messageId}
         viewabilityConfig={inboxSessionViewabilityConfig}
         onViewableItemsChanged={inboxSessionItemsChanged}
         onLayout={() => {flatListRef.current?.recordInteraction()}}
      />
   )
}