-function getDate(){
- var d = new Date;
- document.write(d.toDateString());
-}
\ No newline at end of file
+/**
+ * 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 = {};
+//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.has_control = false;
+//mctx.debug = true;
+
+mctx.statusCodes = {
+ STATUS_OK : 1
+};
+
+mctx.statusCodesDescription = {
+ "1" : "Ok",
+ "-1" : "General error",
+ "-2" : "Unauthorized",
+ "-3" : "Not running",
+ "-4" : "Already exists"
+};
+
+mctx.sensors = {
+ 0 : {name : "Strain gauge 1"},
+ 1 : {name : "Strain gauge 2"},
+ 2 : {name : "Strain gauge 3"},
+ 3 : {name : "Strain gauge 4"},
+ 4 : {name : "Pressure sensor 1"},
+ 5 : {name : "Pressure sensor 2"},
+ 6 : {name : "Pressure sensor 3"}
+};
+
+mctx.actuators = {
+ 0 : {name : "Solenoid 1"},
+ 1 : {name : "Solenoid 2"},
+ 2 : {name : "Solenoid 3"},
+ 3 : {name : "Pressure regulator"}
+};
+
+mctx.strain_gauges = {};
+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() {
+ 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 $.ajax({
+ url : mctx.api + "identify"
+ }).done(function (data) {
+ if (data.logged_in && isLoginPage) {
+ if (mctx.debug) {
+ debugLog("Redirect disabled!");
+ } else {
+ window.location = mctx.location;
+ }
+ } else if (!data.logged_in && !isLoginPage) {
+ if (mctx.debug) {
+ debugLog("Redirect disabled!");
+ } else {
+ //Note: this only clears the nameless cookie
+ document.cookie = "";
+ window.location = mctx.location + "login.html";
+ }
+ } else {
+ mctx.friendlyName = data.friendly_name;
+ }
+ }).fail(function (jqHXR) {
+ if (mctx.debug) {
+ debugLog("Failed to ident server. Is API running?")
+ } else if (!isLoginPage) {
+ window.location = mctx.location + "login.html";
+ }
+ });
+}
+
+/**
+ * Populates a submenu of the navigation bar
+ * @param {string} header The header
+ * @param {object} items An object representing the submenu items
+ * @param {function} translator A function that translates an object item
+ * into a text and href.
+ * @returns {$.fn} Itself
+ */
+$.fn.populateSubmenu = function(header, items, translator) {
+ var submenuHeader = $("<li/>").append($("<a/>", {text : header, href : "#"}));
+ var submenu = $("<ul/>", {"class" : "submenu"});
+
+ for (var item in items) {
+ var info = translator(item, items);
+ submenu.append($("<li/>").append(
+ $("<a/>", {text : info.text,
+ href : info.href, target : "_blank"})
+ ));
+ }
+
+ this.append(submenuHeader.append(submenu));
+ return this;
+};
+
+/**
+ * Populates the navigation bar
+ */
+$.fn.populateNavbar = function () {
+ var menu = $("<ul/>", {"class" : "menu"});
+ var sensorTranslator = function(item, items) {
+ var href = mctx.api + "sensors?start_time=0&format=tsv&id=" + item;
+ return {text : items[item].name, href : href};
+ };
+ var actuatorTranslator = function(item, items) {
+ var href = mctx.api + "actuators?start_time=0&format=tsv&id=" + item;
+ return {text : items[item].name, href : href};
+ };
+
+ menu.populateSubmenu("Sensor data", mctx.sensors, sensorTranslator);
+ menu.populateSubmenu("Actuator data", mctx.actuators, actuatorTranslator);
+ menu.appendTo(this);
+ return this;
+}
+
+/**
+ * Sets the camera autoupdater
+ * Obsolete?
+ * @returns {$.fn}
+ */
+$.fn.setCamera = function () {
+ var url = mctx.api + "image"; //http://beaglebone/api/image
+ var update = true;
+
+ //Stop updating if we can't retrieve an image!
+ this.error(function() {
+ update = false;
+ });
+
+ var parent = this;
+
+ var updater = function() {
+ if (!update) {
+ alert("Cam fail");
+ parent.attr("src", "");
+ return;
+ }
+
+ parent.attr("src", url + "#" + (new Date()).getTime());
+
+ setTimeout(updater, 1000);
+ };
+
+ updater();
+ return this;
+};
+
+/**
+ * Sets the strain graphs to graph stuff. Obsolete?
+ * @returns {$.fn}
+ */
+$.fn.setStrainGraphs = function () {
+ var sensor_url = mctx.api + "sensors";
+ var graphdiv = this;
+
+ var updater = function () {
+ var time_limit = mctx.strain_gauges.time_limit;
+ var responses = new Array(mctx.strain_gauges.ids.length);
+
+ for (var i = 0; i < mctx.strain_gauges.ids.length; i++) {
+ var parameters = {id : i, start_time: -time_limit};
+ responses[i] = $.ajax({url : sensor_url, data : parameters});
+ }
+
+ $.when.apply(this, responses).then(function () {
+ var data = new Array(arguments.length);
+ for (var i = 0; i < arguments.length; i++) {
+ var raw_data = arguments[i][0].data;
+ var pruned_data = [];
+ var step = ~~(raw_data.length/100);
+ for (var j = 0; j < raw_data.length; j += step)
+ pruned_data.push(raw_data[j]);
+ data[i] = pruned_data;
+ }
+ $.plot(graphdiv, data);
+ setTimeout(updater, 500);
+ }, function () {alert("It crashed");});
+ };
+
+ updater();
+ return this;
+};
+
+/**
+ * Performs a login attempt.
+ * @returns The AJAX object of the login request */
+$.fn.login = function () {
+ var username = this.find("input[name='username']").val();
+ var password = this.find("input[name='pass']").val();
+ var out = this.find("#result");
+ var redirect = function () {
+ window.location.href = mctx.location;
+ };
+
+ out.removeAttr("class");
+ out.text("Logging in...");
+
+ return $.ajax({
+ url : mctx.api + "bind",
+ data : {user: username, pass : password}
+ }).done(function (data) {
+ if (data.status < 0) {
+ mctx.has_control = false;
+ out.attr("class", "fail");
+ out.text("Login failed: " + data.description);
+ } else {
+ //todo: error check
+ mctx.has_control = true;
+ out.attr("class", "pass");
+ out.text("Login ok!");
+ setTimeout(redirect, 800);
+ }
+ }).fail(function (jqXHR) {
+ mctx.has_control = false;
+ out.attr("class", "fail");
+ out.text("Login request failed - connection issues.")
+ });
+};
+
+/**
+ * Performs a logout request. The nameless cookie is
+ * always cleared and the browser redirected to the login page,
+ * independent of whether or not logout succeeded.
+ * @returns The AJAX object of the logout request.
+ */
+$.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 () {
+ $.ajax({url : url}).done(function (data) {
+ outdiv.text(data);
+ outdiv.scrollTop(
+ outdiv[0].scrollHeight - outdiv.height()
+ );
+ setTimeout(updater, 2000);
+ }).fail(function (jqXHR) {
+ if (jqXHR.status === 502 || jqXHR.status === 0) {
+ outdiv.text("Failed to retrieve the error log.");
+ }
+ setTimeout(updater, 4000);
+ });
+ };
+
+ updater();
+ return this;
+};
+
+$(document).ajaxError(function (event, jqXHR) {
+ //console.log("AJAX query failed with: " + jqXHR.status + " (" + jqXHR.statusText + ")");
+});
\ No newline at end of file
git.ucc.asn.au / matches / MCTX3420.git / blobdiff
UCC git Repository :: git.ucc.asn.au