bulk trash

remove-chat-messages.user.js

// ==UserScript==
// @name          BULK TRASH
// @author        Robert Lemon
// @version       1.0
// @namespace     
// @description   Adds a bulk trash button to the chat.
// @include       http://chat.stackoverflow.com/rooms/*
// ==/UserScript==
function exec(fn) {
    var script = document.createElement('script');
    script.setAttribute("type", "application/javascript");
    script.textContent = '(' + fn + ')();';
    document.body.appendChild(script); // run the script
}
exec(function() {
    var btn = $('<button class="button">Bulk Trash</button>'),
        room = document.forms[0].elements.room.value;
    btn.on('click', function() {
        var modal = $('<div><h4>Trash Who?</h4></div>'),
            $users = $('#present-users:not(.more)').clone();
        modal.append($users).addClass('popup room-popup').css({
            bottom: btn.position().top,
            left: btn.position().left
        }).on('click', function(e) {
            if (confirm("Would you like to trash all posts by " + e.target.title)) {
                var id = $(e.target).closest('li').prop('id').split('-')[2],
                    all = [];
                $('.user-' + id + '.monologue .message').each(function() {
                    all.push(this.id.split('-')[1]);
                });
                $.post("/admin/movePosts/" + room, fkey({
                    ids: all.join(','),
                    to: 23262
                }));
                modal.remove();
            }
            return false;
        });
        $(document.body).append(modal);
        return false;
    });
    $('#chat-buttons').append(btn);
});