To test closure

kindlize-it_sendrequest.js

(function () {
    "use strict";
    var ContentScripts = (function () {
        function isBook(category) {
            if (category.value === "books") {
                return true;
            }
            return false;
        }

        function haveAlreadyKindleEdition() {
            if (document.getElementById("kindle_meta_binding_winner")) {
                return true;
            }
            return false;
        }

        function getTargetUrl(asin) {
            return 'http://www.amazon.co.jp/gp/digital/fiona/detail/request-kindle-edition/ref=dtp_dp_su_' + asin.value + '?ie=UTF8&a=' + asin.value;
        }

        function sendRequest(targetUrl) {
            // XXX: test
            alert(001);
            var xhr = new XMLHttpRequest();
            xhr.open("GET", targetUrl, true);
            xhr.onreadystatechange = function () {
                if (xhr.readyState === 4) {
                    //writeResult(targetUrl);
                    // TODO: return xhr.responseText
                    return true;
                }
            };
            xhr.send();
            // TODO: return false;
        }

        function writeResult(targetUrl) {
            // XXX: test
            alert(002);
            var title = document.getElementById("btAsinTitle") || '',
                tgtEle = document.getElementsByClassName("fionaPublish") || false;
            if (!tgtEle) {
                return false;
            }
            tgtEle[0].innerHTML += "<span style=\"color: #999; background-color: #FFF; font-size: medium;\"><p><b>Kindlize It</b>: 『<a href=" + targetUrl + ">" + title.innerHTML + "</a>』の Kindle 化リクエストを送信しました。</p></span>";
        }

        var category = document.getElementById('storeID') || false,
            asin = document.getElementById('ASIN') || false;

        return {
            isBook: function(category) { return isBook(category); },
            haveAlreadyKindleEdition: function() { return haveAlreadyKindleEdition(); },
            getTargetUrl: function(asin) { return getTargetUrl(asin); },
            sendRequest: function(targetUrl) { return sendRequest(targetUrl); },
            writeResult: function(targetUrl) { return writeResult(targetUrl); },
            category: category,
            asin: asin,
        }
    }());

    (function () {
        var category = ContentScripts.category,
            asin = ContentScripts.asin,
            isBook = ContentScripts.isBook(category),
            haveAlreadyKindleEdition = ContentScripts.haveAlreadyKindleEdition(),
            targetUrl = ContentScripts.getTargetUrl(asin);
    // 例えばここで
    // requestResult = ContentScripts.sendRequest(targetUrl);
    // とかやっちゃうとリクエストを減らすという意図が崩れちゃうよね
        if (!category || !asin || !isBook || haveAlreadyKindleEdition) {
            return false;
        }
        if (!ContentScripts.sendRequest(targetUrl)) {
            return false;
        }
    ContentScripts.writeResult(targetUrl);
    }());
}());