transplus.js

var isCORSSupport = 'withCredentials' in new XMLHttpRequest();
var isIE = typeof XDomainRequest !== "undefined";
var xdr;
var interBuffer = [];
var finalBuffer = [];
var bufCnt = 0;

var getJSON = function (query, callback) {
    if (isCORSSupport) {
        $.getJSON(query, callback);
    } else if (isIE) {
        xdr = new XDomainRequest();
        if (xdr) {
            xdr.onload = callback;
            xdr.open("get", query);
            xdr.send();
        }
    } else {
        $.ajax({
            type: "GET",
            dataType: "jsonp",
            jsonp: "callback",
            url: query,
            success: callback
        });
    }
}

var setQueryString = function (message) {
    var result = "http://goxcors.appspot.com/cors?method=GET" +
        "&url=" + encodeURIComponent("http://translate.google.com/translate_a/t?client=x" +
        "&sl=" + message.userlang + "&tl=" + message.targetlang +
        "&text=" + encodeURIComponent(message.text));
    return result;
};

var extractResult = function (data) {
    if (!isCORSSupport && isIE) {
        data = $.parseJSON(data.responseText);
    }
    return data && data.sentences && $.map(data.sentences, (function (v) {
        return v.trans
    }));
};

var translateLineByLine = function (i, buffer) {
    message.text = buffer + "|!";
    message.userlang = $("#interLang").val();
    message.targetlang = $("#targetLang").val();
    var translateFinalLang = function (data) {
        var post = extractResult(data).join('');
        // prevent to trim new line
        bufCnt--;
        finalBuffer[i] = post.replace(/\|!/g, "");
        $(".translateResult").text(finalBuffer.join(""));
    };
    getJSON(setQueryString(message), translateFinalLang);
};


var translateInterLang = function (data) {
    console.dir(data);
    interBuffer = extractResult(data);
    $(".translateInterResult").text(interBuffer.join(""));

    bufCnt = finalBuffer.length = interBuffer.length;

    for (var i in interBuffer) {
        translateLineByLine(i, interBuffer[i]);
    }
};

var translateDirectLang = function (data) {
    var post = extractResult(data).join('');
    $(".translateDirectResult").text(post);
};

$("form").submit(function () {
    /*
        text: 번역할 내용
        userlang: 번역할 내용이 작성 된 언어
        targetlang: 번역할 언어
        interLang : 중간에 번역할 언어
    */

    message = {
        text: $(".sourceText").val(),
        userlang: $("#userLang").val(),
        targetlang: $("#targetLang").val()
    };

    getJSON(setQueryString(message), translateDirectLang);

    message.targetlang = $("#interLang").val();
    interBuffer.length = 0;
    $(".translateResult").text("");
    getJSON(setQueryString(message), translateInterLang);
    return false;
});

$().ready(function () {
    $("#targetLang").val(navigator.userLanguage || navigator.language || "ko");
});