Twitter Prompt (window.open)

twPromp9.user.js

// ==UserScript==
// @name Twitter Prompt
// @include http://mobile.twitter.com/+
// @description Tweet via window.prompt
// ==/UserScript==

/* Bookmarklet */
if (false) {
javascript: (function(s, t) {
    if (s = prompt('いまどうしてる？', s)) confirm((t = s.slice(0, 140)) +
    '\n\n あと\x20' + (140 - s.length) + '\x20字入力可能') ?
    open('http://mobile.twitter.com/+', t, 'height=1,width=' + innerWidth) :
    arguments.callee(s)
})(encodeURI(decodeURI(location)))
}

/* Main */
(function() {
    window.name && twitterPrompt(window.name);
    function twitterPrompt(tweet) {
        var auth = document.getElementsByName("authenticity_token")[0];
        if (!auth) return exit("Twitter は現在利用できません", tweet);
        if (!confirm(tweet + "\n\nこの文をツイートします")) return exit();
        var xhr = new XMLHttpRequest;
        xhr.open("POST", "/", true);
        xhr.setRequestHeader("Content-Type",
        "application/x-www-form-urlencoded");
        xhr.onreadystatechange = function() {
            if (this.readyState < 4) return;
            if (this.status === 200) {
                this.getAllResponseHeaders() ? exit() :
                exit("ログインしてやり直して下さい", tweet); 
            } else exit([this.status, this.getAllResponseHeaders()], tweet);
        };
        xhr.send("authenticity_token=" + encodeURIComponent(auth.value) +
        "&tweet%5Btext%5D=" + encodeURIComponent(tweet));
    };
    function exit(msg, tweet) {
        if (msg !== void 0 && tweet !== void 0) prompt(Error(msg), tweet);
        close();
    };
})();