index.js

import React, { PureComponent } from 'react';
import PropTypes from 'prop-types';
import {
  Text,
  TouchableWithoutFeedback,
  TouchableOpacity,
  TextInput,
  Animated,
  Dimensions,
  Keyboard,
  Image,
  View,
  ViewPropTypes
} from 'react-native';

const AnimatedTextInput = Animated.createAnimatedComponent(TextInput);
const containerHeight = 40;

class Search extends PureComponent {
  constructor(props) {
    super(props);

    this.state = {
      keyword: '',
      expanded: false,
    };
    const { width } = Dimensions.get('window');
    this.contentWidth = width;
    this.middleWidth = width / 2;
    this.cancelButtonWidth = this.props.cancelButtonWidth || 70;

    /**
     * Animated values
     */
    this.iconSearchAnimated = new Animated.Value(
      this.middleWidth - this.props.searchIconCollapsedMargin
    );
    this.iconDeleteAnimated = new Animated.Value(0);
    this.inputFocusWidthAnimated = new Animated.Value(this.contentWidth - 10);
    this.inputFocusPlaceholderAnimated = new Animated.Value(
      this.middleWidth - this.props.placeholderCollapsedMargin
    );
    this.btnCancelAnimated = new Animated.Value(this.contentWidth);

    /**
     * functions
     */
    this.onFocus = this.onFocus.bind(this);
    this.onSearch = this.onSearch.bind(this);
    this.onChangeText = this.onChangeText.bind(this);
    this.onCancel = this.onCancel.bind(this);
    this.onDelete = this.onDelete.bind(this);
    this.focus = this.focus.bind(this);
    this.expandAnimation = this.expandAnimation.bind(this);
    this.collapseAnimation = this.collapseAnimation.bind(this);
    this.onLayout = this.onLayout.bind(this);

    /**
     * local variables
     */
    this.placeholder = this.props.placeholder || 'Search';
    this.cancelTitle = this.props.cancelTitle || 'Cancel';
    this.autoFocus =  this.props.autoFocus || false;

    /**
     * Shadow
     */
    this.shadowOpacityAnimated = new Animated.Value(
      this.props.shadowOpacityCollapsed
    );
    this.shadowHeight = this.props.shadowOffsetHeightCollapsed;
  }

  componentDidMount() {
    if(this.autoFocus) {
      this.setState({expanded: true})
      this.refs.input_keyword._component.focus();

    }
  }

  onLayout = event => {
    const contentWidth = event.nativeEvent.layout.width;
    this.contentWidth = contentWidth;
    this.middleWidth = contentWidth / 2;
    if (this.state.expanded) {
      this.expandAnimation();
    } else {
      this.collapseAnimation();
    }
  };

  /**
 * onSearch
 * async await
 */
  onSearch = async () => {
    this.props.beforeSearch &&
      (await this.props.beforeSearch(this.state.keyword));
    if (this.props.keyboardShouldPersist === false) {
      await Keyboard.dismiss();
    }
    this.props.onSearch && (await this.props.onSearch(this.state.keyword));
    this.props.afterSearch &&
      (await this.props.afterSearch(this.state.keyword));
  };

  /**
 * onChangeText
 * async await
 */
  onChangeText = async text => {
    await this.setState({ keyword: text });
    await new Promise((resolve, reject) => {
      Animated.timing(this.iconDeleteAnimated, {
        toValue: text.length > 0 ? 1 : 0,
        duration: 200
      }).start(() => resolve());
    });
    this.props.onChangeText &&
      (await this.props.onChangeText(this.state.keyword));
  };

  /**
     * onFocus
     * async await
     */
  onFocus = async () => {
    this.props.beforeFocus && (await this.props.beforeFocus());
    this.refs.input_keyword._component.isFocused &&
      (await this.refs.input_keyword._component.focus());
    await this.setState(prevState => {
      return { expanded: !prevState.expanded };
    });
    await this.expandAnimation();
    this.props.onFocus && (await this.props.onFocus(this.state.keyword));
    this.props.afterFocus && (await this.props.afterFocus());
  };

  /**
     * focus
     * async await
     */
  focus = async (text = '') => {
    await this.setState({ keyword: text });
    await this.refs.input_keyword._component.focus();
  };

  /**
     * onDelete
     * async await
     */
  onDelete = async () => {
    this.props.beforeDelete && (await this.props.beforeDelete());
    await new Promise((resolve, reject) => {
      Animated.timing(this.iconDeleteAnimated, {
        toValue: 0,
        duration: 200
      }).start(() => resolve());
    });
    await this.setState({ keyword: '' });
    this.props.onDelete && (await this.props.onDelete());
    this.props.afterDelete && (await this.props.afterDelete());
  };

  /**
     * onCancel
     * async await
     */
  onCancel = async () => {
    this.props.beforeCancel && (await this.props.beforeCancel());
    await this.setState({ keyword: '' });
    await this.setState(prevState => {
      return { expanded: !prevState.expanded };
    });
    await this.collapseAnimation(true);
    this.props.onCancel && (await this.props.onCancel());
    this.props.afterCancel && (await this.props.afterCancel());
  };

  expandAnimation = () => {
    return new Promise((resolve, reject) => {
      Animated.parallel([
        Animated.timing(this.inputFocusWidthAnimated, {
          toValue: this.contentWidth - this.cancelButtonWidth,
          duration: 200
        }).start(),
        Animated.timing(this.btnCancelAnimated, {
          toValue: 10,
          duration: 200
        }).start(),
        Animated.timing(this.inputFocusPlaceholderAnimated, {
          toValue: this.props.placeholderExpandedMargin,
          duration: 200
        }).start(),
        Animated.timing(this.iconSearchAnimated, {
          toValue: this.props.searchIconExpandedMargin,
          duration: 200
        }).start(),
        Animated.timing(this.iconDeleteAnimated, {
          toValue: this.state.keyword.length > 0 ? 1 : 0,
          duration: 200
        }).start(),
        Animated.timing(this.shadowOpacityAnimated, {
          toValue: this.props.shadowOpacityExpanded,
          duration: 200
        }).start()
      ]);
      this.shadowHeight = this.props.shadowOffsetHeightExpanded;
      resolve();
    });
  };

  collapseAnimation = (isForceAnim = false) => {
    return new Promise((resolve, reject) => {
      Animated.parallel([
        this.props.keyboardShouldPersist === false ? Keyboard.dismiss() : null,
        Animated.timing(this.inputFocusWidthAnimated, {
          toValue: this.contentWidth - 10,
          duration: 200
        }).start(),
        Animated.timing(this.btnCancelAnimated, {
          toValue: this.contentWidth,
          duration: 200
        }).start(),
        this.props.keyboardShouldPersist === false
          ? Animated.timing(this.inputFocusPlaceholderAnimated, {
              toValue: this.middleWidth - this.props.placeholderCollapsedMargin,
              duration: 200
            }).start()
          : null,
        this.props.keyboardShouldPersist === false || isForceAnim === true
          ? Animated.timing(this.iconSearchAnimated, {
              toValue: this.middleWidth - this.props.searchIconCollapsedMargin,
              duration: 200
            }).start()
          : null,
        Animated.timing(this.iconDeleteAnimated, {
          toValue: 0,
          duration: 200
        }).start(),
        Animated.timing(this.shadowOpacityAnimated, {
          toValue: this.props.shadowOpacityCollapsed,
          duration: 200
        }).start()
      ]);
      this.shadowHeight = this.props.shadowOffsetHeightCollapsed;
      resolve();
    });
  };

  render() {
    const styles = getStyles(this.props.inputHeight);
    return (
      <Animated.View
        ref="searchContainer"
        style={[
          styles.container,
          this.props.backgroundColor && {
            backgroundColor: this.props.backgroundColor
          }
        ]}
        onLayout={this.onLayout}
      >
        <AnimatedTextInput
          ref="input_keyword"
          style={[
            styles.input,
            this.props.placeholderTextColor && {
              color: this.props.placeholderTextColor
            },
            this.props.inputStyle && this.props.inputStyle,
            this.props.inputHeight && { height: this.props.inputHeight },
            this.props.inputBorderRadius && {
              borderRadius: this.props.inputBorderRadius
            },
            {
              width: this.inputFocusWidthAnimated,
              paddingLeft: this.inputFocusPlaceholderAnimated
            },
            this.props.shadowVisible && {
              shadowOffset: {
                width: this.props.shadowOffsetWidth,
                height: this.shadowHeight
              },
              shadowColor: this.props.shadowColor,
              shadowOpacity: this.shadowOpacityAnimated,
              shadowRadius: this.props.shadowRadius
            }
          ]}
          editable={this.props.editable}
          value={this.state.keyword}
          onChangeText={this.onChangeText}
          placeholder={this.placeholder}
          placeholderTextColor={
            this.props.placeholderTextColor || styles.placeholderColor
          }
          selectionColor={this.props.selectionColor}
          onSubmitEditing={this.onSearch}
          autoCorrect={false}
          blurOnSubmit={this.props.blurOnSubmit}
          returnKeyType={this.props.returnKeyType || 'search'}
          keyboardType={this.props.keyboardType || 'default'}
          autoCapitalize={this.props.autoCapitalize}
          onFocus={this.onFocus}
          underlineColorAndroid="transparent"
        />
        <TouchableWithoutFeedback onPress={this.onFocus}>
          {this.props.iconSearch
            ? <Animated.View
                style={[styles.iconSearch, { left: this.iconSearchAnimated }]}
              >
                {this.props.iconSearch}
              </Animated.View>
            : <Animated.Image
                source={require('./img/search.png')}
                style={[
                  styles.iconSearch,
                  styles.iconSearchDefault,
                  this.props.tintColorSearch && {
                    tintColor: this.props.tintColorSearch
                  },
                  {
                    left: this.iconSearchAnimated
                  }
                ]}
              />}
        </TouchableWithoutFeedback>
        {this.props.useClearButton && <TouchableWithoutFeedback onPress={this.onDelete}>
          {this.props.iconDelete
            ? <Animated.View
                style={[
                  styles.iconDelete,
                  this.props.positionRightDelete && {
                    right: this.props.positionRightDelete
                  },
                  { opacity: this.iconDeleteAnimated }
                ]}
              >
                {this.props.iconDelete}
              </Animated.View>
            : <Animated.Image
                source={require('./img/delete.png')}
                style={[
                  styles.iconDelete,
                  styles.iconDeleteDefault,
                  this.props.tintColorDelete && {
                    tintColor: this.props.tintColorDelete
                  },
                  this.props.positionRightDelete && {
                    right: this.props.positionRightDelete
                  },
                  { opacity: this.iconDeleteAnimated }
                ]}
              />}
        </TouchableWithoutFeedback>}

        <TouchableOpacity onPress={this.onCancel}>
          <Animated.View
            style={[
              styles.cancelButton,
              this.props.cancelButtonStyle && this.props.cancelButtonStyle,
              this.props.cancelButtonViewStyle && this.props.cancelButtonViewStyle,
              { left: this.btnCancelAnimated }
            ]}
          >
            <Text
              style={[
                styles.cancelButtonText,
                this.props.titleCancelColor && {
                  color: this.props.titleCancelColor
                },
                this.props.cancelButtonStyle && this.props.cancelButtonStyle,
                this.props.cancelButtonTextStyle && this.props.cancelButtonTextStyle,
              ]}
            >
              {this.cancelTitle}
            </Text>
          </Animated.View>
        </TouchableOpacity>
      </Animated.View>
    );
  }
}

const getStyles = (inputHeight) => {
  let middleHeight = 20
  if (typeof inputHeight == 'number')
    middleHeight = (10 + inputHeight) / 2;

  return {
    container: {
      backgroundColor: 'grey',
      height: containerHeight,
      flexDirection: 'row',
      justifyContent: 'flex-start',
      alignItems: 'center',
      padding: 5
    },
    input: {
      height: containerHeight - 10,
      paddingTop: 5,
      paddingBottom: 5,
      paddingRight: 20,
      borderColor: '#444',
      backgroundColor: '#f7f7f7',
      borderRadius: 5,
      fontSize: 13
    },
    placeholderColor: 'grey',
    iconSearch: {
      flex: 1,
      position: 'absolute',
      top: middleHeight - 7,
      height: 14,
      width: 14
    },
    iconSearchDefault: {
      tintColor: 'grey'
    },
    iconDelete: {
      position: 'absolute',
      right: 70,
      top: middleHeight - 7,
      height: 14,
      width: 14
    },
    iconDeleteDefault: {
      tintColor: 'grey'
    },
    cancelButton: {
      justifyContent: 'center',
      alignItems: 'flex-start',
      backgroundColor: 'transparent',
      width: 60,
      height: 50
    },
    cancelButtonText: {
      fontSize: 14,
      color: '#fff'
    }
  };
}

/**
 * Props
 */
Search.propTypes = {
  /**
     * onFocus
     * return a Promise
     * beforeFocus, onFocus, afterFocus
     */
  beforeFocus: PropTypes.func,
  onFocus: PropTypes.func,
  afterFocus: PropTypes.func,

  /**
     * onSearch
     * return a Promise
     */
  beforeSearch: PropTypes.func,
  onSearch: PropTypes.func,
  afterSearch: PropTypes.func,

  /**
     * onChangeText
     * return a Promise
     */
  onChangeText: PropTypes.func,

  /**
     * onCancel
     * return a Promise
     */
  beforeCancel: PropTypes.func,
  onCancel: PropTypes.func,
  afterCancel: PropTypes.func,

  /**
     * async await
     * return a Promise
     * beforeDelete, onDelete, afterDelete
     */
  beforeDelete: PropTypes.func,
  onDelete: PropTypes.func,
  afterDelete: PropTypes.func,

  /**
     * styles
     */
  backgroundColor: PropTypes.string,
  placeholderTextColor: PropTypes.string,
  titleCancelColor: PropTypes.string,
  tintColorSearch: PropTypes.string,
  tintColorDelete: PropTypes.string,
  inputStyle: PropTypes.oneOfType([
    PropTypes.number,
    PropTypes.object,
	ViewPropTypes.style,
    Text.propTypes.style
  ]),
  cancelButtonStyle: PropTypes.oneOfType([PropTypes.number, PropTypes.object, ViewPropTypes.style, Text.propTypes.style]),
  onLayout: PropTypes.func,
  cancelButtonTextStyle: Text.propTypes.style,

  cancelButtonViewStyle: PropTypes.oneOfType([PropTypes.object, ViewPropTypes.style]),

  /**
     * text input
     */
  placeholder: PropTypes.string,
  cancelTitle: PropTypes.oneOfType([PropTypes.string, PropTypes.object]),
  iconDelete: PropTypes.object,
  iconSearch: PropTypes.object,
  returnKeyType: PropTypes.string,
  keyboardType: PropTypes.string,
  autoCapitalize: PropTypes.string,
  inputHeight: PropTypes.number,
  inputBorderRadius: PropTypes.number,
  contentWidth: PropTypes.number,
  middleWidth: PropTypes.number,
  editable: PropTypes.bool,
  blurOnSubmit: PropTypes.bool,
  keyboardShouldPersist: PropTypes.bool,
  useClearButton: PropTypes.bool,

  /**
     * Positioning
     */
  positionRightDelete: PropTypes.number,
  searchIconCollapsedMargin: PropTypes.number,
  searchIconExpandedMargin: PropTypes.number,
  placeholderCollapsedMargin: PropTypes.number,
  placeholderExpandedMargin: PropTypes.number,

  /**
     * Shadow
     */
  shadowOffsetHeightCollapsed: PropTypes.number,
  shadowOffsetHeightExpanded: PropTypes.number,
  shadowOffsetWidth: PropTypes.number,
  shadowColor: PropTypes.string,
  shadowOpacityCollapsed: PropTypes.number,
  shadowOpacityExpanded: PropTypes.number,
  shadowRadius: PropTypes.number,
  shadowVisible: PropTypes.bool
};

Search.defaultProps = {
  editable: true,
  blurOnSubmit: true,
  keyboardShouldPersist: false,
  searchIconCollapsedMargin: 25,
  searchIconExpandedMargin: 10,
  placeholderCollapsedMargin: 15,
  placeholderExpandedMargin: 20,
  shadowOffsetWidth: 0,
  shadowOffsetHeightCollapsed: 2,
  shadowOffsetHeightExpanded: 4,
  shadowColor: '#000',
  shadowOpacityCollapsed: 0.12,
  shadowOpacityExpanded: 0.24,
  shadowRadius: 4,
  shadowVisible: false,
  useClearButton: true,
};

export default Search;