Function callHttp

web-src/src/common/utils/common.js:85–143

(url, object, method, asyncHandler, onError)

}

export function callHttp(url, object, method, asyncHandler, onError) {
    method = method || 'GET';

    var xhttp = new XMLHttpRequest();

    var async = !isNull(asyncHandler);
    if (async) {
        xhttp.onreadystatechange = function () {
            if (xhttp.readyState === XMLHttpRequest.DONE) {
                if (xhttp.status === 200) {
                    asyncHandler(xhttp.responseText);
                } else if (onError) {
                    onError(xhttp.status, xhttp.responseText);
                }
            }
        };

        if (onError) {
            xhttp.addEventListener('error', function (event) {
                console.log('Failed to execute request');
                console.log(event);
                onError(-1, 'Unknown error occurred');
            });
        }
    }

    xhttp.open(method, url, async);
    xhttp.setRequestHeader('X-Requested-With', 'XMLHttpRequest');

    try {
        if (object instanceof FormData) {
            xhttp.send(object);

        } else if (!isNull(object)) {
            xhttp.setRequestHeader('Content-Type', 'application/json;charset=UTF-8');
            xhttp.send(JSON.stringify(object));

        } else {
            xhttp.send();
        }
    } catch (error) {
        throw new HttpRequestError(xhttp.status, error.message);
    }

    if (!async) {
        if (xhttp.status === 200) {
            return xhttp.responseText;

        } else {
            var message = 'Couldn\'t execute request.';
            if (!isNull(xhttp.responseText) && (xhttp.responseText.length > 0)) {
                message = xhttp.responseText;
            }
            throw new HttpRequestError(xhttp.status, message);
        }
    } else {
        return xhttp;
    }