topic.js
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$.fn.extend({
animateCSS: function (animation) {
var animationEnd = 'webkitAnimationEnd mozAnimationEnd MSAnimationEnd oanimationend animationend';
this.addClass('animated ' + animation).one(animationEnd, function() {
$(this).removeClass('animated ' + animation);
$("#submit").removeClass("disabled");
});
}
});
function showTriesLeft(tries) {
var tries_msg;
switch (tries) {
case 0:
tries_msg = "";
break;
case 1:
tries_msg = "(1 tentativa)";
break;
default:
tries_msg = "(" + tries + " tentativas)";
}
$("#tries").html(tries_msg);
}
// Get current question
function getQuestion() {
$("#submit").addClass("disabled");
$.ajax({
type: "GET",
url: "/question",
dataType: "json", // expected from server
success: updateQuestion,
error: function() {alert("O servidor não responde.");}
});
}
// updates question according to the response given by the server
function updateQuestion(response) {
var method = response["method"];
var params = response["params"];
$("#right, #wrong").hide();
switch (method) {
case "new_question":
new_question(params["type"], params["question"], params["tries"], params["progress"]);
break;
case "finished_topic":
$('#submit, #comments, #solution').remove();
$("#content").html(response["params"]["question"]).animateCSS('tada');
$('#topic_progress').css('width', '100%').attr('aria-valuenow', 100);
setTimeout(function(){window.location.replace('/');}, 2000);
break;
}
}
function new_question(type, question, tries, progress) {
window.scrollTo(0, 0);
$("#question_div").html(question).animateCSS('bounceInDown');
showTriesLeft(tries);
$("#comments, #solution").html("");
var btntext = (type == "info") ? "Continuar" : "Responder";
$("#submit").html(btntext).off().click(postAnswer);
$('#topic_progress').css('width', (100*progress)+'%').attr('aria-valuenow', 100*progress);
MathJax.Hub.Queue(["Typeset",MathJax.Hub,"question_div"]);
// enable shift+enter to submit
$("input:text, input:radio, input:checkbox").keydown(function (e) {
if (e.keyCode == 13) {
e.preventDefault();
// if (e.shiftKey) {
// $("#submit").click();
// }
return false;
}});
}
// ===========================================================================
// Send answer and receive a response with the result of the correction.
// The response can be right, try_again or wrong.
// A new question is not loaded. To load questions a GET is required.
function postAnswer() {
if (typeof editor === 'object')
editor.save();
$.ajax({
type: "POST",
url: "/question",
data: $("#question_form").serialize(), // {'a':10,'b':20},
dataType: "json", // expected from server
success: getFeedback,
error: function() {alert("O servidor não responde.");}
});
}
function getFeedback(response) {
var method = response["method"];
var params = response["params"];
if (params['type'] == "info") {
getQuestion();
return;
}
switch (method) {
case "right":
$('#right').show();
$('#wrong').hide();
$('#comments').html(params['comments']);
MathJax.Hub.Queue(["Typeset", MathJax.Hub, "#comments"]);
$("#submit").html("Continuar").off().click(getQuestion);
$("#link_solution_on_right").click(function(){
$("#right").hide();
$('#solution').html(params['solution']).animateCSS('flipInX');
MathJax.Hub.Queue(["Typeset", MathJax.Hub, "#solution"]);
});
break;
case "try_again":
$('#question_div').animateCSS('shake');
$('#topic_progress').css('width', (100*params["progress"])+'%').attr('aria-valuenow', 100*params["progress"]);
showTriesLeft(params["tries"]);
$('#comments').html(params['comments']);
MathJax.Hub.Queue(["Typeset",MathJax.Hub,"#comments"]);
break;
case "wrong":
$('#right').hide();
$('#wrong').show();
$('#topic_progress').css('width', (100*params["progress"])+'%').attr('aria-valuenow', 100*params["progress"]);
showTriesLeft(params["tries"]);
$('#comments').html(params['comments']);
MathJax.Hub.Queue(["Typeset", MathJax.Hub, "#comments"]);
$("#link_solution_on_wrong").click(function () {
$("#wrong").hide();
$('#solution').html(params['solution']).animateCSS('flipInX');
MathJax.Hub.Queue(["Typeset", MathJax.Hub, "#solution"]);
});
$("fieldset").attr("disabled", "disabled");
$("#submit").html("Continuar").off().click(getQuestion);
break;
}
}
// ===========================================================================
$(document).ready(function() {
getQuestion();
$("#submit").click(postAnswer);
});