HeaderBackButton.js 5.63 KB
'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _react = require('react');

var React = _interopRequireWildcard(_react);

var _reactNative = require('react-native');

var _TouchableItem = require('../TouchableItem');

var _TouchableItem2 = _interopRequireDefault(_TouchableItem);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var HeaderBackButton = function (_React$PureComponent) {
  _inherits(HeaderBackButton, _React$PureComponent);

  function HeaderBackButton() {
    var _ref;

    var _temp, _this, _ret;

    _classCallCheck(this, HeaderBackButton);

    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return _ret = (_temp = (_this = _possibleConstructorReturn(this, (_ref = HeaderBackButton.__proto__ || Object.getPrototypeOf(HeaderBackButton)).call.apply(_ref, [this].concat(args))), _this), _this.state = {}, _this._onTextLayout = function (e) {
      if (_this.state.initialTextWidth) {
        return;
      }
      _this.setState({
        initialTextWidth: e.nativeEvent.layout.x + e.nativeEvent.layout.width
      });
    }, _temp), _possibleConstructorReturn(_this, _ret);
  }

  _createClass(HeaderBackButton, [{
    key: 'render',
    value: function render() {
      var _props = this.props,
          onPress = _props.onPress,
          pressColorAndroid = _props.pressColorAndroid,
          width = _props.width,
          title = _props.title,
          titleStyle = _props.titleStyle,
          tintColor = _props.tintColor,
          truncatedTitle = _props.truncatedTitle;


      var renderTruncated = this.state.initialTextWidth && width ? this.state.initialTextWidth > width : false;

      var backButtonTitle = renderTruncated ? truncatedTitle : title;

      // eslint-disable-next-line global-require
      var asset = require('../assets/back-icon.png');

      return React.createElement(
        _TouchableItem2.default,
        {
          accessibilityComponentType: 'button',
          accessibilityLabel: backButtonTitle,
          accessibilityTraits: 'button',
          testID: 'header-back',
          delayPressIn: 0,
          onPress: onPress,
          pressColor: pressColorAndroid,
          style: styles.container,
          borderless: true
        },
        React.createElement(
          _reactNative.View,
          { style: styles.container },
          React.createElement(_reactNative.Image, {
            style: [styles.icon, !!title && styles.iconWithTitle, !!tintColor && { tintColor: tintColor }],
            source: asset
          }),
          _reactNative.Platform.OS === 'ios' && typeof backButtonTitle === 'string' && React.createElement(
            _reactNative.Text,
            {
              onLayout: this._onTextLayout,
              style: [styles.title, !!tintColor && { color: tintColor }, titleStyle],
              numberOfLines: 1
            },
            backButtonTitle
          )
        )
      );
    }
  }]);

  return HeaderBackButton;
}(React.PureComponent);

HeaderBackButton.defaultProps = {
  pressColorAndroid: 'rgba(0, 0, 0, .32)',
  tintColor: _reactNative.Platform.select({
    ios: '#037aff'
  }),
  truncatedTitle: 'Back'
};


var styles = _reactNative.StyleSheet.create({
  container: {
    alignItems: 'center',
    flexDirection: 'row',
    backgroundColor: 'transparent'
  },
  title: {
    fontSize: 17,
    paddingRight: 10
  },
  icon: _reactNative.Platform.OS === 'ios' ? {
    height: 21,
    width: 13,
    marginLeft: 10,
    marginRight: 22,
    marginVertical: 12,
    resizeMode: 'contain',
    transform: [{ scaleX: _reactNative.I18nManager.isRTL ? -1 : 1 }]
  } : {
    height: 24,
    width: 24,
    margin: 16,
    resizeMode: 'contain',
    transform: [{ scaleX: _reactNative.I18nManager.isRTL ? -1 : 1 }]
  },
  iconWithTitle: _reactNative.Platform.OS === 'ios' ? {
    marginRight: 5
  } : {}
});

exports.default = HeaderBackButton;