Function EngineWrapper

miniprogram_dist/engine-wrapper.js:250–421

(adapter)

//EngineWrapper can help  generating  a  http engine quickly through a adapter
            function EngineWrapper(adapter) {
                var AjaxEngine = function () {
                    function AjaxEngine() {
                        _classCallCheck(this, AjaxEngine);

                        this.requestHeaders = {};
                        this.readyState = 0;
                        this.timeout = 0; // 0 stands for no timeout
                        this.responseURL = "";
                        this.responseHeaders = {};
                    }

                    _createClass(AjaxEngine, [{
                        key: "_call",
                        value: function _call(name) {
                            this[name] && this[name].apply(this, [].splice.call(arguments, 1));
                        }
                    }, {
                        key: "_changeReadyState",
                        value: function _changeReadyState(state) {
                            this.readyState = state;
                            this._call("onreadystatechange");
                        }
                    }, {
                        key: "open",
                        value: function open(method, url) {
                            this.method = method;
                            if (!url) {
                                url = location.href;
                            } else {
                                url = util.trim(url);
                                if (url.indexOf("http") !== 0) {
                                    // Normalize the request url
                                    if (isBrowser) {
                                        var t = document.createElement("a");
                                        t.href = url;
                                        url = t.href;
                                    }
                                }
                            }
                            this.responseURL = url;
                            this._changeReadyState(1);
                        }
                    }, {
                        key: "send",
                        value: function send(arg) {
                            var _this = this;

                            arg = arg || null;
                            var self = this;
                            if (adapter) {
                                var request = {
                                    method: self.method,
                                    url: self.responseURL,
                                    headers: self.requestHeaders || {},
                                    body: arg
                                };
                                util.merge(request, self._options || {});