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/*
* Timer
*
*/
var Timer = {
start_t: 0,
pause_start_t: 0,
pause_acc_t: 0,
paused: false,
start: function() {
this.start_t = Date.now();
this.pause_start_t = 0;
this.pause_acc_t = 0;
this.paused = false;
},
pause: function() {
this.paused = true;
this.pause_start_t = Date.now();
},
unpause: function() {
this.paused = false;
this.pause_acc_t += Date.now()-this.pause_start_t;
this.pause_start_t = 0;
},
get: function() {
return (Date.now()-this.start_t)-this.pause_acc_t;
}
}
/*
* init site
*
*/
function init()
{
document.getElementById("target_textarea").value = "";
document.getElementById("raw_source_textarea").value = "";
document.getElementById("source").value = "";
document.getElementById("current_seg_id").value = "";
document.getElementById("paused").value = "";
document.getElementById("oov_correct").value = false;
document.getElementById("displayed_oov_hint").value = false;
document.getElementById("next").removeAttribute("disabled");
document.getElementById("pause_button").removeAttribute("disabled");
return false;
}
/*
* cross-site request
*
*/
function CreateCORSRequest(method, url)
{
var xhr = new XMLHttpRequest();
if ("withCredentials" in xhr) {
xhr.open(method, url, true);
} else {
xhr = null;
}
return xhr;
}
/*
* no newline on return in textarea
*
*/
function catch_return(e)
{
if (e.keyCode == 13) {
e.preventDefault();
Next();
}
return false;
}
/*
* pause/unpause timer
*
*/
function pause()
{
var paused = document.getElementById("paused");
var button = document.getElementById("pause_button");
var next_button = document.getElementById("next");
if (paused.value == 0) {
button.innerHTML = "Unpause";
paused.value = 1;
next.setAttribute("disabled", "disabled");
Timer.pause();
} else {
button.innerHTML = "Pause";
paused.value = 0;
next.removeAttribute("disabled");
Timer.unpause();
}
}
/*
* next button
*
*/
function Next()
{
// elements
var button = document.getElementById("next");
var pause_button = document.getElementById("pause_button");
var target_textarea = document.getElementById("target_textarea")
var raw_source_textarea = document.getElementById("raw_source_textarea");
var current_seg_id = document.getElementById("current_seg_id");
var source = document.getElementById("source");
var status = document.getElementById("status");
var oov_correct = document.getElementById("oov_correct");
// disable button and textarea
button.setAttribute("disabled", "disabled");
pause_button.setAttribute("disabled", "disabled");
target_textarea.setAttribute("disabled", "disabled");
// get metadata stored in DOM
var port = document.getElementById("port").value;
var base_url = "http://coltrane.cl.uni-heidelberg.de:"+port;
var key = document.getElementById("key").value;
next_url = base_url+"/next?key="+key;
var post_edit = target_textarea.value;
if (oov_correct.value=="false" && post_edit != "") {
// compose request
next_url += "&example="+source.value+" %7C%7C%7C "+post_edit+"&duration="+Timer.get();
// update document overview
document.getElementById("seg_"+(current_seg_id.value)+"_t").innerHTML=post_edit;
} else if (oov_correct.value=="true" && post_edit != "") {
next_url += "&correct="+raw_source_textarea.value+" %7C%7C%7C "+post_edit
} else {
if (source.value != "") {
alert("Error: 1"); // FIXME: do something reasonable
}
}
// show 'working' message
status.style.display = "block";
// build request
var xhr = CreateCORSRequest('get', next_url);
if (!xhr) {
alert("Error: 2"); // FIXME: do something reasonable
}
// 'next' request's callbacks
xhr.onload = function() {
// translation system is currently handling a request
// FIXME: maybe poll server for result?
if (xhr.responseText == "locked") {
alert("Translation system is locked, try again in a moment (reload page and click 'Start/Continue' again).");
status.style.display = "none";
return;
}
var x = xhr.responseText.split("\t");
if (x == "fi") { // done -> hide/disable functional elements
raw_source_textarea.style.display = "none";
target_textarea.style.display = "none";
status.style.display = "none";
button.innerHTML = "Session finished, thank you!";
button.setAttribute("disabled", "disabled");
pause_button.setAttribute("disabled", "disabled");
document.getElementById("seg_"+current_seg_id.value).className = "";
} else {
// got response: OOV\tseg id\ttoken_1\ttoken_2\t...
// 0 1 2 3 ...
if (x[0] == "OOV") {
var s = "";
for (var i=2; i < x.length; i++) {
s += x[i].substr(1,x[i].length-2);
if (i+1 < x.length) {
s += "; ";
}
raw_source_textarea.value = s;
}
// update interface
status.style.display = "none";
button.innerHTML = "Correct";
button.removeAttribute("disabled");
target_textarea.removeAttribute("disabled", "disabled");
pause_button.removeAttribute("disabled", "disabled");
target_textarea.value = "";
target_textarea.focus();
target_textarea.selectionStart = 0;
target_textarea.selectionEnd = 0;
oov_correct.value = true;
var id = x[1];
document.getElementById("seg_"+id).className = "bold";
if (id > 0) {
document.getElementById("seg_"+(id-1)).className = "";
}
if (document.getElementById("displayed_oov_hint").value == "false") {
alert("Please translate the following words (separated by semicolons) to enable translation of the next sentence. Use proper casing.");
document.getElementById("displayed_oov_hint").value = true;
}
return;
}
// got response: seg id\tsource\ttranslation\traw source
// 0 1 2 3
var id = x[0];
var src = x[1];
var translation = x[2];
var raw_source = x[3];
// update interface
oov_correct.value = false;
status.style.display = "none";
target_textarea.value = translation;
raw_source_textarea.value = raw_source;
button.innerHTML = "Next";
button.removeAttribute("disabled");
target_textarea.removeAttribute("disabled", "disabled");
pause_button.removeAttribute("disabled", "disabled");
document.getElementById("seg_"+id).className = "bold";
if (x[0] > 0) {
document.getElementById("seg_"+(id-1)).className = "";
}
target_textarea.rows = Math.round(translation.length/80)+1;
raw_source_textarea.rows = Math.round(raw_source.length/80)+1;
target_textarea.focus();
target_textarea.selectionStart = 0;
target_textarea.selectionEnd = 0;
// remember aux data in DOM
current_seg_id.value = id;
source.value = src;
// confirm to server
var xhr_confirm = CreateCORSRequest('get', base_url+"/confirm");
xhr_confirm.send(); // FIXME: handle errors
Timer.start();
}
};
xhr.onerror = function() {
// FIXME: do something reasonable
};
xhr.send(); // send 'next' request
return;
}
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