jss-react-material/lib/rich-media/picture.js

Google Material Components for React

'use strict';

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

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

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 _class, _class2, _temp;

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _propTypes = require('prop-types');

var _propTypes2 = _interopRequireDefault(_propTypes);

var _reactDom = require('react-dom');

var _reactDom2 = _interopRequireDefault(_reactDom);

var _addons = require('../addons');

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

function _objectWithoutProperties(obj, keys) { var target = {}; for (var i in obj) { if (keys.indexOf(i) >= 0) continue; if (!Object.prototype.hasOwnProperty.call(obj, i)) continue; target[i] = obj[i]; } return target; }

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 findMediaIndex = function findMediaIndex(sources, width) {
    var index = sources.reverse().findIndex(function (source) {
        var matches = source.media.match(/^\(([a-z-]+): ([0-9]+)([a-z]+)\)$/);
        if (!matches) {
            return false;
        }
        var media = matches[1];
        var unit = matches[3];
        var sourceWidth = unit === 'rem' ? matches[2] * 16 : matches[2];
        if (media === 'min-width' && sourceWidth > width) {
            return true;
        } else if (media === 'max-width' && sourceWidth < width) {
            return true;
        }
        return false;
    });

    return index !== -1 ? sources.length - 1 - index : -1;
};

var PictureElement = (0, _addons.getClasses)(_class = (_temp = _class2 = function (_React$Component) {
    _inherits(PictureElement, _React$Component);

    function PictureElement() {
        var _ref;

        _classCallCheck(this, PictureElement);

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

        var _this = _possibleConstructorReturn(this, (_ref = PictureElement.__proto__ || Object.getPrototypeOf(PictureElement)).call.apply(_ref, [this].concat(args)));

        _this.state = { index: 0 };
        return _this;
    }

    _createClass(PictureElement, [{
        key: 'componentDidMount',
        value: function componentDidMount() {
            if (!window.HTMLPictureElement) {
                var picture = _reactDom2.default.findDOMNode(this).getElementsByTagName('img')[0];
                var sources = this.props.sources;
                var width = picture.width;
                var index = findMediaIndex(sources, width);
                if (index !== -1) {
                    this.setState({ index: index });
                }
            }
        }
    }, {
        key: 'render',
        value: function render() {
            var _props = this.props,
                sources = _props.sources,
                others = _objectWithoutProperties(_props, ['sources']);

            var index = this.state.index;
            var fallback = { src: sources[index].src, alt: sources[index].alt };

            return _react2.default.createElement(
                'picture',
                { className: this.getClasses('picture', others) },
                sources.map(function (props, key) {
                    var src = props.src,
                        type = props.type,
                        media = props.media,
                        sizes = props.sizes;

                    return _react2.default.createElement('source', _extends({ key: key }, { media: media, sizes: sizes, type: type }, { srcSet: src }));
                }),
                fallback && _react2.default.createElement('img', _extends({}, fallback, others))
            );
        }
    }]);

    return PictureElement;
}(_react2.default.Component), _class2.propTypes = {
    sources: _propTypes2.default.arrayOf(_propTypes2.default.shape({
        src: _addons.MaterialPropTypes.url.isRequired,
        type: _propTypes2.default.string.isRequired,
        alt: _propTypes2.default.string,
        media: _propTypes2.default.string,
        sizes: _propTypes2.default.string,
        title: _propTypes2.default.string
    })).isRequired
}, _temp)) || _class;

exports.default = PictureElement;