/**
* MCTX3420 2013 GUI stuff.
+ * Coding style:
+ * - Always end statements with semicolons
+ * - Egyptian brackets are highly recommended (*cough*).
+ * - Don't use synchronous stuff - hook events into callbacks
+ * - $.fn functions should return either themselves or some useful object
+ * to allow for chaining of method calls
*/
mctx = {};
-mctx.api = location.protocol + "//" + location.host + "/api/";
+//Don't use this in the final version
+mctx.location = window.location.pathname;
+mctx.location = mctx.location.substring(0, mctx.location.lastIndexOf('/')) + "/";
+//mctx.location = location.protocol + "//" + location.host + "/";
+mctx.api = location.protocol + "//" + location.host + "/" + "api/";
mctx.expected_api_version = 0;
-mctx.key = undefined;
mctx.has_control = false;
+//mctx.debug = true;
-mctx.return_codes = {
+mctx.statusCodes = {
+ STATUS_OK : 1
+};
+
+mctx.statusCodesDescription = {
"1" : "Ok",
"-1" : "General error",
"-2" : "Unauthorized",
mctx.strain_gauges.ids = [0, 1, 2, 3];
mctx.strain_gauges.time_limit = 20;
+/**
+ * Logs a message if mctx.debug is enabled. This function takes
+ * a variable number of arguments and passes them
+ * to alert or console.log (based on browser support).
+ * @returns {undefined}
+ */
+function debugLog () {
+ if (mctx.debug) {
+ if (typeof console === "undefined" || typeof console.log === "undefined") {
+ for (var i = 0; i < arguments.length; i++) {
+ alert(arguments[i]);
+ }
+ } else {
+ console.log.apply(this, arguments);
+ }
+ }
+}
+
/**
* Writes the current date to wherever it's called.
*/
-function getDate(){
+function getDate() {
document.write((new Date()).toDateString());
}
+/**
+ * Should be run before the load of any GUI page.
+ * To hook events to be called after this function runs,
+ * use the 'always' method, e.g runBeforeLoad().always(function() {my stuff});
+ * @param {type} isLoginPage
+ * @returns The return value of calling $.ajax
+ */
+function runBeforeLoad(isLoginPage) {
+ return $.ajax({
+ url : mctx.api + "identify"
+ }).done(function (data) {
+ if (data.logged_in && isLoginPage) {
+ if (mctx.debug) {
+ debugLog("Redirect disabled!");
+ } else {
+ window.location = mctx.location;
+ }
+ } else if (!data.logged_in && !isLoginPage) {
+ if (mctx.debug) {
+ debugLog("Redirect disabled!");
+ } else {
+ //Note: this only clears the nameless cookie
+ document.cookie = "";
+ window.location = mctx.location + "login.html";
+ }
+ } else {
+ mctx.friendlyName = data.friendly_name;
+ }
+ }).fail(function (jqHXR) {
+ if (mctx.debug) {
+ debugLog("Failed to ident server. Is API running?")
+ } else if (!isLoginPage) {
+ window.location = mctx.location + "login.html";
+ }
+ });
+}
+
/**
* Populates a submenu of the navigation bar
* @param {string} header The header
/**
* Sets the camera autoupdater
+ * Obsolete?
* @returns {$.fn}
*/
$.fn.setCamera = function () {
return this;
};
+/**
+ * Sets the strain graphs to graph stuff. Obsolete?
+ * @returns {$.fn}
+ */
$.fn.setStrainGraphs = function () {
var sensor_url = mctx.api + "sensors";
var graphdiv = this;
return this;
};
+/**
+ * Performs a login attempt.
+ * @returns The AJAX object of the login request */
$.fn.login = function () {
var username = this.find("input[name='username']").val();
var password = this.find("input[name='pass']").val();
- var force = this.find("input[name='force']").is(":checked");
- var url = mctx.api + "control";
-
- var authFunc = function(xhr) {
- xhr.setRequestHeader("Authorization",
- "Basic " + base64.encode(username + ":" + password));
+ var out = this.find("#result");
+ var redirect = function () {
+ window.location.href = mctx.location;
};
-
- $.ajax({
- url : url,
- data : {action : "lock", force : (force ? true : undefined)},
- beforeSend : authFunc
+
+ out.removeAttr("class");
+ out.text("Logging in...");
+
+ return $.ajax({
+ url : mctx.api + "bind",
+ data : {user: username, pass : password}
}).done(function (data) {
- mctx.key = data.key;
if (data.status < 0) {
- alert("no - " + data.description);
+ mctx.has_control = false;
+ out.attr("class", "fail");
+ out.text("Login failed: " + data.description);
} else {
+ //todo: error check
mctx.has_control = true;
- alert("yes - " + mctx.key);
+ out.attr("class", "pass");
+ out.text("Login ok!");
+ setTimeout(redirect, 800);
}
}).fail(function (jqXHR) {
- mctx.key = undefined;
mctx.has_control = false;
- alert("no");
+ out.attr("class", "fail");
+ out.text("Login request failed - connection issues.")
});
};
+/**
+ * Performs a logout request. The nameless cookie is
+ * always cleared and the browser redirected to the login page,
+ * independent of whether or not logout succeeded.
+ * @returns The AJAX object of the logout request.
+ */
+$.fn.logout = function () {
+ return $.ajax({
+ url : mctx.api + "unbind"
+ }).always(function () {
+ //Note: this only clears the nameless cookie
+ document.cookie = "";
+ window.location = mctx.location + "login.html";
+ });
+};
+
+/**
+ * Sets the error log to continuously update.
+ * @returns itself */
$.fn.setErrorLog = function () {
var url = mctx.api + "errorlog";
var outdiv = this;
var updater = function () {
$.ajax({url : url}).done(function (data) {
outdiv.text(data);
- setTimeout(updater, 1000);
+ outdiv.scrollTop(
+ outdiv[0].scrollHeight - outdiv.height()
+ );
+ setTimeout(updater, 2000);
}).fail(function (jqXHR) {
- outdiv.text("Failed to retrieve the error log.");
+ if (jqXHR.status === 502 || jqXHR.status === 0) {
+ outdiv.text("Failed to retrieve the error log.");
+ }
+ setTimeout(updater, 4000);
});
};
updater();
+ return this;
};
$(document).ajaxError(function (event, jqXHR) {
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