topic.js
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$.fn.extend({
animateCSS: function (animation, run_on_end) {
var animationEnd = 'webkitAnimationEnd mozAnimationEnd MSAnimationEnd oanimationend animationend';
this.addClass('animated ' + animation).one(animationEnd, function() {
$(this).removeClass('animated ' + animation);
if (run_on_end !== undefined) {
run_on_end();
}
});
}
});
function showTriesLeft(tries) {
var msg;
if (tries > 1)
msg = "(" + tries + " tentativas)";
else if (tries == 1)
msg = "(1 tentativa)";
else
msg = "";
$("#tries").html(msg);
}
// Get current question
function getQuestion() {
$("#comments").html("").hide();
$("#submit").addClass("disabled");
$.ajax({
type: "GET",
url: "/question",
dataType: "json", // expected from server
success: updateQuestion,
error: function() {alert("O servidor não responde.");}
});
}
// updates question in the page according to the response given by the server
function updateQuestion(response) {
var params = response["params"];
$("#right, #wrong").hide();
switch (response["method"]) {
case "new_question":
new_question(params["type"], params["question"], params["tries"], params["progress"]);
break;
case "finished_topic":
$('#submit, #comments, #solution').remove();
$("#content").html(params["question"]).animateCSS('tada');
$('#topic_progress').css('width', '100%').attr('aria-valuenow', 100);
setTimeout(function(){window.location.replace('/course/');}, 2000);
break;
}
}
function new_question(type, question, tries, progress) {
window.scrollTo(0, 0);
$("#submit").hide();
$("#question_div").animateCSS('bounceOutUp', function() {
$("#question_div").html(question);
MathJax.typeset();
$("#question_div").animateCSS('bounceInDown', function() {
showTriesLeft(tries);
$("#submit").removeClass("disabled").show();
// disable enter in some question types (prevent submission on enter)
$("input:text, input:radio, input:checkbox").keydown(function (e) {
if (e.keyCode == 13 || e.keyCode == 169) {
e.preventDefault();
return false;
}
});
});
});
var btntext = (type == "information") ? "Continuar" : "Responder";
$("#submit").html(btntext).off().click(postAnswer);
$('#topic_progress').css('width', (100*progress)+'%').attr('aria-valuenow', 100*progress);
if (type == "radio") {
$(".list-group-item").click(function (e) {
var index = $(this).index();
$("div.list-group input:radio").eq(index).prop("checked", true);
});
}
}
// ===========================================================================
// 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.");}
});
$("#submit").addClass("disabled").html('<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span>');
$("fieldset").prop("disabled", true);
}
function getFeedback(response) {
var params = response["params"];
if (params["type"] == "information") {
getQuestion();
return;
}
switch (response["method"]) {
case "right":
$('#wrong').hide();
$('#comments').html(params['comments']).show();
$('#solution_right').html(params['solution']);
MathJax.typeset();
$('#right').show().animateCSS('zoomIn', function(){
$("#submit").html("Continuar").removeClass("disabled").off().click(getQuestion);
});
break;
case "try_again":
$('#comments').html(params['comments']).show();
MathJax.typeset();
$('#topic_progress').css('width', (100*params["progress"])+'%').attr('aria-valuenow', 100*params["progress"]);
$('#question_div').animateCSS('shake', function() {
showTriesLeft(params["tries"]);
$("fieldset").prop("disabled", false);
$("#submit").html("Responder").removeClass("disabled");
});
break;
case "wrong":
$("fieldset").prop("disabled", true);
$('#right').hide();
$('#comments').html(params['comments']).show();
$('#solution_wrong').html(params['solution']);
MathJax.typeset();
$('#question_div').animateCSS('shake', function() {
showTriesLeft(params["tries"]);
$('#wrong').show().animateCSS('zoomIn', function() {
$("#submit").html("Continuar").removeClass("disabled").off().click(getQuestion);
});
});
$('#topic_progress').css('width', (100*params["progress"])+'%').attr('aria-valuenow', 100*params["progress"]);
break;
case "invalid":
alert(params["msg"]);
break;
}
}
// ===========================================================================
$(document).ready(function() {
getQuestion();
$("#submit").click(postAnswer);
});