# All files / form FormInput.js

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     import PropTypes from 'prop-types';
    import React, { Component } from 'react';
    import {
      Animated,
      Easing,
      TextInput,
      StyleSheet,
      Platform,
      Dimensions,
      Text as NativeText,
    } from 'react-native';
    import colors from '../config/colors';
    import normalize from '../helpers/normalizeText';
    import ViewPropTypes from '../config/ViewPropTypes';

    const { width } = Dimensions.get('window');

    class FormInput extends Component {
      constructor(props) {
        super(props);
        this.shake = this.shake.bind(this);
      }

      componentWillMount() {
        this.shakeAnimationValue = new Animated.Value(0);
        this.props.shake && this.shake();
      }

      componentWillReceiveProps(nextProps) {
        nextProps.shake && this.props.shake !== nextProps.shake && this.shake();
      }

      getRef = () => {
        return this.input || this.refs[this.props.textInputRef];
      };

      getRefHandler = () => {
        if (this.props.textInputRef) {
          if (typeof this.props.textInputRef === 'function') {
            return input => {
              this.input = input;
              this.props.textInputRef(input);
            };
          } else {
            return this.props.textInputRef;
          }
        } else {
          return input => (this.input = input);
        }
      };

      focus() {
        this.getRef() && this.getRef().focus();
      }

      blur() {
        this.getRef() && this.getRef().blur();
      }

      clearText() {
        this.getRef() && this.getRef().clear();
      }

      shake() {
        const { shakeAnimationValue } = this;
        shakeAnimationValue.setValue(0);
        Animated.timing(shakeAnimationValue, {
          duration: 375,
          toValue: 3,
          ease: Easing.bounce,
        }).start();
      }

      render() {
        const {
          containerStyle,
          inputStyle,
          containerRef,
          normalizeFontSize,
          ...attributes
        } = this.props;
        const translateX = this.shakeAnimationValue.interpolate({
          inputRange: [0, 0.5, 1, 1.5, 2, 2.5, 3],
          outputRange: [0, -15, 0, 15, 0, -15, 0],
        });
        return (
          <Animated.View
            ref={containerRef}
            style={[
              styles.container,
              containerStyle && containerStyle,
              {
                transform: [{ translateX }],
              },
            ]}
          >
            <TextInput
              {...attributes}
              ref={this.getRefHandler()}
              style={[
                styles.input,
                { fontSize: normalizeFontSize ? normalize(14) : 14 },
                inputStyle && inputStyle,
              ]}
            />
          </Animated.View>
        );
      }
    }

    FormInput.propTypes = {
      containerStyle: ViewPropTypes.style,
      inputStyle: NativeText.propTypes.style,
      // Deprecated
      textInputRef: PropTypes.oneOfType([PropTypes.string, PropTypes.func]),
      // Deprecated
      containerRef: PropTypes.oneOfType([PropTypes.string, PropTypes.func]),
      normalizeFontSize: PropTypes.bool,
      shake: PropTypes.oneOfType([
        PropTypes.string,
        PropTypes.bool,
        PropTypes.object,
        PropTypes.number,
        PropTypes.array,
      ]),
    };

    FormInput.defaultProps = {
      normalizeFontSize: true,
    };

    const styles = StyleSheet.create({
      container: {
        marginLeft: 15,
        marginRight: 15,
        ...Platform.select({
          ios: {
            borderBottomColor: colors.grey4,
            borderBottomWidth: 1,
            marginLeft: 20,
            marginRight: 20,
          },
        }),
      },
      input: {
        ...Platform.select({
          android: {
            minHeight: 46,
            width: width - 30,
          },
          ios: {
            minHeight: 36,
            width: width,
          },
        }),
        // breaks tests - fix before release
        // Invariant Violation: Invalid undefined `width` of type `string`
        // supplied to `StyleSheet input`, expected `number`.
        // width: '100%',
        color: colors.grey3,
      },
    });

    export default FormInput;