# All files / swipedeck SwipeDeck.js

46.51% Statements 20/43
20% Branches 4/20
29.41% Functions 5/17
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     /*eslint-disable no-console */
    import PropTypes from 'prop-types';
    import React, { Component } from 'react';
    import {
      View,
      Animated,
      PanResponder,
      Dimensions,
      StyleSheet,
      LayoutAnimation,
      UIManager,
    } from 'react-native';

    const SCREEN_WIDTH = Dimensions.get('window').width;
    const SWIPE_THRESHOLD = 0.4 * SCREEN_WIDTH;
    const MOVE_THRESHOLD = 50;

    export default class SwipeDeck extends Component {
      static defaultProps = {
        onSwipeRight: () => {},
        onSwipeLeft: () => {},
      };

      constructor(props) {
        super(props);

        const position = new Animated.ValueXY();

        const panResponder = PanResponder.create({
          // ignore touch and handle only move-gestures
          onMoveShouldSetPanResponderCapture: (e, gesture) => {
            return Math.abs(gesture.dx) > MOVE_THRESHOLD;
          },
          onStartShouldSetPanResponder: () => true,
          onPanResponderMove: (event, gesture) => {
            position.setValue({ x: gesture.dx, y: gesture.dy });
          },
          onPanResponderRelease: (event, gesture) => {
            if (gesture.dx > SWIPE_THRESHOLD) {
              this.forceSwipe('right');
            } else if (gesture.dx < -SWIPE_THRESHOLD) {
              this.forceSwipe('left');
            } else {
              this.resetPosition();
            }
          },
        });

        this.state = { panResponder, position, index: 0 };
      }

      componentWillReceiveProps(nextProps) {
        if (nextProps.data !== this.props.data) {
          this.setState({ index: 0 });
        }
      }

      componentWillUpdate() {
        UIManager.setLayoutAnimationEnabledExperimental &&
          UIManager.setLayoutAnimationEnabledExperimental(true);
        LayoutAnimation.spring();
      }

      forceSwipe(direction) {
        const x = direction === 'right' ? SCREEN_WIDTH : -SCREEN_WIDTH;

        Animated.timing(this.state.position, {
          toValue: { x: x * 2, y: direction === 'right' ? -x : x },
          duration: 750,
        }).start(() => this.onSwipeComplete(direction));
      }

      onSwipeComplete(direction) {
        const { onSwipeRight, onSwipeLeft, data } = this.props;
        const item = data[this.state.index];

        direction === 'right' ? onSwipeRight(item) : onSwipeLeft(item);
        this.state.position.setValue({ x: 0, y: 0 });
        this.setState({ index: this.state.index + 1 });
      }

      resetPosition() {
        Animated.spring(this.state.position, {
          toValue: { x: 0, y: 0 },
        }).start();
      }

      getCardStyle() {
        const { position } = this.state;
        const rotate = position.x.interpolate({
          inputRange: [-SCREEN_WIDTH * 2, 0, SCREEN_WIDTH * 2],
          outputRange: ['-60deg', '0deg', '60deg'],
        });

        return {
          ...this.state.position.getLayout(),
          transform: [{ rotate }],
        };
      }

      renderCards() {
        Iif (this.state.index >= this.props.data.length) {
          return this.props.renderNoMoreCards();
        }

        return this.props.data
          .map((item, i) => {
            Iif (i < this.state.index) {
              return null;
            } else if (i === this.state.index) {
              return (
                <Animated.View
                  key={item.id}
                  style={[this.getCardStyle(), styles.cardStyle]}
                  {...this.state.panResponder.panHandlers}
                >
                  {this.props.renderCard(item)}
                </Animated.View>
              );
            }

            return (
              <Animated.View
                key={item.id}
                style={[styles.cardStyle, { zIndex: 0 }]}
              >
                {this.props.renderCard(item)}
              </Animated.View>
            );
          })
          .reverse();
      }

      render() {
        console.warn(
          "Warning: SwipeDeck has been deprecated and will be removed in a future version of React Native Elements. To keep up with it's development you can check the project here(https://github.com/Monte9/react-native-tinder-cards)."
        );

        return (
          <View>
            {this.renderCards()}
          </View>
        );
      }
    }

    const styles = StyleSheet.create({
      cardStyle: {
        position: 'absolute',
        width: SCREEN_WIDTH,
      },
    });

    SwipeDeck.propTypes = {
      data: PropTypes.any,
      renderCard: PropTypes.any,
      renderNoMoreCards: PropTypes.any,
      onSwipeRight: PropTypes.any,
      onSwipeLeft: PropTypes.any,
    };