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- // @flow
-
- import * as React from 'react';
- import {ERROR_TYPE, readData} from "../../utils/WebData";
- import i18n from "i18n-js";
- import {Snackbar} from 'react-native-paper';
- import {Animated, RefreshControl, View} from "react-native";
- import ErrorView from "./ErrorView";
- import BasicLoadingScreen from "./BasicLoadingScreen";
- import {withCollapsible} from "../../utils/withCollapsible";
- import * as Animatable from 'react-native-animatable';
- import CustomTabBar from "../Tabbar/CustomTabBar";
- import {Collapsible} from "react-navigation-collapsible";
-
- type Props = {
- navigation: { [key: string]: any },
- fetchUrl: string,
- autoRefreshTime: number,
- refreshOnFocus: boolean,
- renderItem: (data: { [key: string]: any }) => React.Node,
- createDataset: (data: { [key: string]: any }) => Array<Object>,
- onScroll: (event: SyntheticEvent<EventTarget>) => void,
- collapsibleStack: Collapsible,
-
- showError: boolean,
- itemHeight?: number,
- updateData?: number,
- renderSectionHeader?: (data: { [key: string]: any }) => React.Node,
- stickyHeader?: boolean,
- }
-
- type State = {
- refreshing: boolean,
- firstLoading: boolean,
- fetchedData: { [key: string]: any } | null,
- snackbarVisible: boolean
- };
-
-
- const MIN_REFRESH_TIME = 5 * 1000;
-
- /**
- * Component used to render a SectionList with data fetched from the web
- *
- * This is a pure component, meaning it will only update if a shallow comparison of state and props is different.
- * To force the component to update, change the value of updateData.
- */
- class WebSectionList extends React.PureComponent<Props, State> {
-
- static defaultProps = {
- stickyHeader: false,
- updateData: 0,
- showError: true,
- };
-
- scrollRef: { current: null | Animated.SectionList };
- refreshInterval: IntervalID;
- lastRefresh: Date | null;
-
- state = {
- refreshing: false,
- firstLoading: true,
- fetchedData: null,
- snackbarVisible: false
- };
-
- /**
- * Registers react navigation events on first screen load.
- * Allows to detect when the screen is focused
- */
- componentDidMount() {
- const onScreenFocus = this.onScreenFocus.bind(this);
- const onScreenBlur = this.onScreenBlur.bind(this);
- this.props.navigation.addListener('focus', onScreenFocus);
- this.props.navigation.addListener('blur', onScreenBlur);
- this.scrollRef = React.createRef();
- this.onRefresh();
- this.lastRefresh = null;
- }
-
- /**
- * Refreshes data when focusing the screen and setup a refresh interval if asked to
- */
- onScreenFocus() {
- if (this.props.refreshOnFocus && this.lastRefresh)
- this.onRefresh();
- if (this.props.autoRefreshTime > 0)
- this.refreshInterval = setInterval(this.onRefresh, this.props.autoRefreshTime)
- // if (this.scrollRef.current) // Reset scroll to top
- // this.scrollRef.current.getNode().scrollToLocation({animated:false, itemIndex:0, sectionIndex:0});
- }
-
- /**
- * Removes any interval on un-focus
- */
- onScreenBlur() {
- clearInterval(this.refreshInterval);
- }
-
-
- /**
- * Callback used when fetch is successful.
- * It will update the displayed data and stop the refresh animation
- *
- * @param fetchedData The newly fetched data
- */
- onFetchSuccess = (fetchedData: { [key: string]: any }) => {
- this.setState({
- fetchedData: fetchedData,
- refreshing: false,
- firstLoading: false
- });
- this.lastRefresh = new Date();
- };
-
- /**
- * Callback used when fetch encountered an error.
- * It will reset the displayed data and show an error.
- */
- onFetchError = () => {
- this.setState({
- fetchedData: null,
- refreshing: false,
- firstLoading: false
- });
- this.showSnackBar();
- };
-
- /**
- * Refreshes data and shows an animations while doing it
- */
- onRefresh = () => {
- let canRefresh;
- if (this.lastRefresh != null) {
- const last = this.lastRefresh;
- canRefresh = (new Date().getTime() - last.getTime()) > MIN_REFRESH_TIME;
- } else
- canRefresh = true;
- if (canRefresh) {
- this.setState({refreshing: true});
- readData(this.props.fetchUrl)
- .then(this.onFetchSuccess)
- .catch(this.onFetchError);
- }
- };
-
- /**
- * Shows the error popup
- */
- showSnackBar = () => this.setState({snackbarVisible: true});
-
- /**
- * Hides the error popup
- */
- hideSnackBar = () => this.setState({snackbarVisible: false});
-
- itemLayout = (data: { [key: string]: any }, index: number) => {
- const height = this.props.itemHeight;
- if (height == null)
- return undefined;
- return {
- length: height,
- offset: height * index,
- index
- }
- };
-
- renderSectionHeader = (data: { section: { [key: string]: any } }) => {
- if (this.props.renderSectionHeader != null) {
- return (
- <Animatable.View
- animation={"fadeInUp"}
- duration={500}
- useNativeDriver
- >
- {this.props.renderSectionHeader(data)}
- </Animatable.View>
- );
- } else
- return null;
- }
-
- renderItem = (data: {
- item: { [key: string]: any },
- index: number,
- section: { [key: string]: any },
- separators: { [key: string]: any },
- }) => {
- return (
- <Animatable.View
- animation={"fadeInUp"}
- duration={500}
- useNativeDriver
- >
- {this.props.renderItem(data)}
- </Animatable.View>
- );
- }
-
- onScroll = (event: SyntheticEvent<EventTarget>) => {
- if (this.props.onScroll)
- this.props.onScroll(event);
- }
-
- render() {
- let dataset = [];
- if (this.state.fetchedData != null || (this.state.fetchedData == null && !this.props.showError)) {
- if (this.state.fetchedData == null)
- dataset = this.props.createDataset({});
- else
- dataset = this.props.createDataset(this.state.fetchedData);
- }
- const {containerPaddingTop, scrollIndicatorInsetTop, onScrollWithListener} = this.props.collapsibleStack;
- return (
- <View>
- <Animated.SectionList
- ref={this.scrollRef}
- sections={dataset}
- extraData={this.props.updateData}
- refreshControl={
- <RefreshControl
- progressViewOffset={containerPaddingTop}
- refreshing={this.state.refreshing}
- onRefresh={this.onRefresh}
- />
- }
- renderSectionHeader={this.renderSectionHeader}
- renderItem={this.renderItem}
- stickySectionHeadersEnabled={this.props.stickyHeader}
- style={{minHeight: '100%'}}
- ListEmptyComponent={this.state.refreshing
- ? <BasicLoadingScreen/>
- : <ErrorView
- {...this.props}
- errorCode={ERROR_TYPE.CONNECTION_ERROR}
- onRefresh={this.onRefresh}/>
- }
- getItemLayout={this.props.itemHeight != null ? this.itemLayout : undefined}
- // Animations
- onScroll={onScrollWithListener(this.onScroll)}
- contentContainerStyle={{
- paddingTop: containerPaddingTop,
- paddingBottom: CustomTabBar.TAB_BAR_HEIGHT,
- minHeight: '100%'
- }}
- scrollIndicatorInsets={{top: scrollIndicatorInsetTop}}
- />
- <Snackbar
- visible={this.state.snackbarVisible}
- onDismiss={this.hideSnackBar}
- action={{
- label: 'OK',
- onPress: () => {
- },
- }}
- duration={4000}
- style={{
- bottom: CustomTabBar.TAB_BAR_HEIGHT
- }}
- >
- {i18n.t("screens.home.listUpdateFail")}
- </Snackbar>
- </View>
- );
- }
- }
-
- export default withCollapsible(WebSectionList);
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