formatchange/react.js

Utility that monitors named CSS media-query breakpoints and triggers event callbacks when a media-format change occurs.

"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
exports.makeFormatMonitorHook = exports.withMediaProps = void 0;
var react_1 = __importStar(require("react"));
/**
 * @deprecated Prefer `makeFormatMonitorHook()` instead. (Will be removed in v3.0)
 *
 * @see https://github.com/maranomynet/formatchange/tree/v2#react-withmediaprops-hoc
 */
var withMediaProps = function (TargetComponent, formatMonitor, getPropsFromMedia) {
    var getStateFromMedia = getPropsFromMedia ||
        TargetComponent.getPropsFromMedia ||
        (function (media) { return media; });
    var FormatMonitored = /** @class */ (function (_super) {
        __extends(FormatMonitored, _super);
        function FormatMonitored(props) {
            var _this = _super.call(this, props) || this;
            _this.getStateFromMedia = function (media) {
                _this.setState(getStateFromMedia(media));
            };
            // NOTE: Don't run getStateFromMedia here because it
            // breaks the hydration of server-side-rendered HTML.
            _this.state = {};
            return _this;
        }
        FormatMonitored.prototype.componentDidMount = function () {
            formatMonitor.subscribe(this.getStateFromMedia);
        };
        FormatMonitored.prototype.componentWillUnmount = function () {
            formatMonitor.unsubscribe(this.getStateFromMedia);
        };
        FormatMonitored.prototype.render = function () {
            return react_1.default.createElement(TargetComponent, __assign({}, this.props, this.state));
        };
        return FormatMonitored;
    }(react_1.default.Component));
    return FormatMonitored;
};
exports.withMediaProps = withMediaProps;
// ===========================================================================
/**
 * A factory function that generates a react hook that is bound
 * to a specific `FormatChange` monitor instance.
 *
 * @see https://github.com/maranomynet/formatchange/tree/v2#react-makeformatmonitorhook
 */
var makeFormatMonitorHook = function (formatMonitor) {
    return function (callback) {
        var fmtMonitor = typeof formatMonitor === "function" ? formatMonitor() : formatMonitor;
        var callbackRef = (0, react_1.useRef)(callback);
        callbackRef.current = callback;
        var hasCallback = !!callback;
        (0, react_1.useEffect)(function () {
            if (callbackRef.current) {
                var callCallback_1 = function (media) {
                    return callbackRef.current && callbackRef.current(media);
                };
                fmtMonitor.subscribe(callCallback_1);
                return function () {
                    fmtMonitor.unsubscribe(callCallback_1);
                };
            }
        }, [hasCallback]);
        return fmtMonitor.media;
    };
};
exports.makeFormatMonitorHook = makeFormatMonitorHook;