# All files Image.js

100% Statements 9/9
100% Branches 2/2
100% Functions 3/3
100% Lines 9/9

Press n or j to go to the next uncovered block, b, p or k for the previous block.

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124

    2x
    2x

    2x

    2x

    3x

    3x

    2x

    2x

    2x

     import React from 'react';
    import PropTypes from 'prop-types';
    import {
      Animated,
      Image as RNImage,
      Platform,
      StyleSheet,
      View,
    } from 'react-native';

    import { nodeType } from '../helpers';
    import { ViewPropTypes, withTheme } from '../config';

    class Image extends React.PureComponent {
      placeholderContainerOpacity = new Animated.Value(1);

      onLoadEnd = () => {
        /* Images finish loading in the same frame for some reason,
            the images will fade in separately with staggerNonce */
        const minimumWait = 100;
        const staggerNonce = 200 * Math.random();

        setTimeout(
          () =>
            Animated.timing(this.placeholderContainerOpacity, {
              toValue: 0,
              duration: 350,
              useNativeDriver: true,
            }).start(),
          minimumWait + staggerNonce
        );
      };

      render() {
        const {
          placeholderStyle,
          PlaceholderContent,
          containerStyle,
          style,
          ImageComponent,
          ...attributes
        } = this.props;

        return (
          <View style={StyleSheet.flatten([styles.container, containerStyle])}>
            {Platform.OS === 'ios' ? (
              <React.Fragment>
                <ImageComponent
                  {...attributes}
                  onLoadEnd={this.onLoadEnd}
                  style={style}
                />

                <Animated.View
                  style={StyleSheet.flatten([
                    styles.placeholderContainer,
                    { opacity: this.placeholderContainerOpacity },
                  ])}
                >
                  <View
                    testID="RNE__Image__placeholder"
                    style={StyleSheet.flatten([
                      style,
                      styles.placeholder,
                      placeholderStyle,
                    ])}
                  >
                    {PlaceholderContent}
                  </View>
                </Animated.View>
              </React.Fragment>
            ) : (
              <React.Fragment>
                <View style={styles.placeholderContainer}>
                  <View
                    testID="RNE__Image__placeholder"
                    style={StyleSheet.flatten([
                      style,
                      styles.placeholder,
                      placeholderStyle,
                    ])}
                  >
                    {PlaceholderContent}
                  </View>
                </View>

                <ImageComponent {...attributes} style={style} />
              </React.Fragment>
            )}
          </View>
        );
      }
    }

    const styles = {
      container: {
        backgroundColor: 'transparent',
        position: 'relative',
      },
      placeholderContainer: {
        ...StyleSheet.absoluteFillObject,
      },
      placeholder: {
        backgroundColor: '#bdbdbd',
        alignItems: 'center',
        justifyContent: 'center',
      },
    };

    Image.propTypes = {
      ...RNImage.propTypes,
      ImageComponent: PropTypes.oneOfType([PropTypes.func, PropTypes.object]),
      PlaceholderContent: nodeType,
      containerStyle: ViewPropTypes.style,
      placeholderStyle: RNImage.propTypes.style,
    };

    Image.defaultProps = {
      ImageComponent: RNImage,
    };

    export { Image };
    export default withTheme(Image, 'Image');