topic.js
3.38 KB
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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);
});
}
});
// Process response given by the server
function updateQuestion(response){
switch (response["method"]) {
case "new_question":
$("#question_div").html(response["params"]["question"]);
$("#comments").html("");
$('#topic_progress').css('width', (100*response["params"]["progress"])+'%').attr('aria-valuenow', 100*response["params"]["progress"]);
MathJax.Hub.Queue(["Typeset",MathJax.Hub,"question_div"]);
// enable shift+enter to submit and tab to spaces conversion
$("input:text, input:radio, input:checkbox").keydown(function (e) {
if (e.keyCode == 13) {
e.preventDefault();
if (e.shiftKey) postQuestion();
return false;
}});
$("textarea").keydown(function (e) {
if (e.keyCode == 13 && e.shiftKey) { // shift enter
e.preventDefault();
postQuestion();
}
else if (e.keyCode == 9) { // tab
e.preventDefault(); // prevent loosing focus
// get caret position/selection
var start = this.selectionStart;
var end = this.selectionEnd;
var value = $(this).val();
// set textarea value to: text before caret + tab + text after caret
$(this).val(value.substring(0, start) + " " + " " + " " + " " + value.substring(end));
// put caret at right position again (add one for the tab)
this.selectionStart = this.selectionEnd = start + 4;
}});
$('#question_div').animateCSS('zoomIn');
break;
case "shake":
$('#topic_progress').css('width', (100*response["params"]["progress"])+'%').attr('aria-valuenow', 100*response["params"]["progress"]);
$('#question_div').animateCSS('shake');
$('#comments').html(response['params']['comments']);
MathJax.Hub.Queue(["Typeset",MathJax.Hub,"#comments"]);
break;
case "finished_topic":
$('#submit').css("visibility", "hidden");
$("#content").html(response["params"]["question"]);
$('#topic_progress').css('width', '100%').attr('aria-valuenow', 100);
$("#content").animateCSS('tada');
setTimeout(function(){ window.location.replace('/'); }, 2000);
break;
}
}
// Get current question
function getQuestion() {
$.ajax({
type: "GET",
url: "/question",
dataType: "json", // expected from server
success: updateQuestion,
error: function() {alert("O servidor não responde.");}
});
}
// Send answer and receive a response.
// The response can be a new_question or a shake if the answer is wrong.
function postQuestion() {
$.ajax({
type: "POST",
url: "/question",
data: $("#question_form").serialize(), // {'a':10,'b':20},
dataType: "json", // expected from server
success: updateQuestion,
error: function() {alert("O servidor não responde.");}
});
}
$(document).ready(function() {
getQuestion();
$("#submit").click(postQuestion);
});