XMLHttpRequest to GM_xmlhttpRequest

main.js

// Made from scratch based on https://github.com/ShiftSpace/gmrequest/blob/master/GMRequest.js

XMLHttpRequest = function () {
	var _params = {
		context	: this,
		headers	: {},
		onreadystatechange	: function (detail) {
			this.status = detail.status;
			this.statusText = detail.statusText;
			this.responseHeaders = detail.responseHeaders;
			this.responseText = detail.responseText;
			this.readyState = detail.readyState;

			this.onreadystatechange && this.onreadystatechange();
		}.bind(this)
	},
	_exec,
	_send = function (data, binary) {
		var t = {
			data	: data,
			binary	: binary,
		};
		for (var key in _params) {
			t[key] = _params[key];
		}
		for (var key in this) {
			if (!(key in t)) {
				if (this[key] instanceof Function) {
					t[key] = function (xhr) {
						this[key].call(this, xhr);
					}.bind(this);
				} else {
					t[key] = this[key];
				}
			}
		}

		_exec = GM_xmlhttpRequest(t);
	}.bind(this);
	
	this.setRequestHeader = function (key, value) {
		_params.headers[key] = value;
	};

	this.getResponseHeader = function (key) {
		return this.responseHeaders[key];
	};
	
	this.getAllResponseHeaders = function () {
		return this.responseHeaders;
	};
	
	this.overrideMimeType = function (value) {
		_params.overrideMimeType = value;
	};
	
	this.open = function (_method, _url, _async, _user, _passw) {
		this.abort();

		_params.method = _method.toUpperCase();
		_params.url = _url;
		_params.synchronous = !_async;
		_params.user = _user;
		_params.password = _passw;
	};
	
	this.abort = function () {
		_exec && _exec.abort();
	}

	this.send = function (data) {
		_send(data, false);
	};

	this.sendAsBinary = function (data) {
		_send(data, true);
	}
};