pixiv_fav_on_dashboard.user.js

// ==UserScript==
// @name           Courteous favorite on dashboard
// @namespace      http://fuba.moarningnerds.org/
// @description    favorite a reblogged item using their original service
// @include        http://www.tumblr.com/dashboard*
// @require        http://gist.github.com/3238.txt
// ==/UserScript==

var SITEINFO = [
    {
        name: 'pixiv',
        xpath: './/div[@class="caption"]//a[contains(@href, "www.pixiv.net")]',
        regexp: '^.*illust_id\=(\\d+)$',
        replace: 'http://www.pixiv.net/bookmark_add.php?type=illust&illust_id=[1]',
        icon: 'http://www.pixiv.net/favicon.ico',
    }
];

var filter = function (root) {
    var photos = $X('.//li[contains(@class, "post photo")]', root);
    if (photos.length == 0 && root.className.match(/post photo/)) {
        photos.push(root);
    }
    
    photos.forEach(function (li) {
        var postControls = $X(".//div[@class='post_controls']", li)[0];
        SITEINFO.forEach(function(pat){
            var matches = $X(pat.xpath, li);
            if (matches[0] && matches[0].href) {
                var url = matches[0].href;
                var re = new RegExp(pat.regexp, 'i');
                var refs = url.match(re);
                if (refs) {
                    var template = pat.replace;
                    
                    refs.forEach(function(ref){
                        if ('undefined' != typeof(ref)) {
                            var numre = new RegExp('\\[\\d+\\]');
                            template = template.replace(numre, ref);
                        }
                    });
                    
                    postControls.appendChild(createFavIcon({
                        url: template,
                        service: pat
                    }));
                }
            }
        });
    });
};

var createFavIcon = function (item) {
    var favanc = document.createElement('A');
    favanc.addEventListener('mouseup', function () {
        openIframe(item.url)
    }, false);
    
    if (item.service.icon) {
        var favicon = document.createElement('IMG');
        favicon.src = item.service.icon;
        favicon.alt = item.service.name;
        favicon.title = item.service.name;
        favanc.appendChild(favicon);
    }
    else {
        favanc.appendChild(document.createTextNode(item.service.name));
    }
    
    return favanc;
};


var openIframe = function (url) {
    var body = document.body;
    var iframe = document.createElement('iframe');
    iframe.width = parseInt(window.innerWidth * 0.7);
    iframe.height = window.innerHeight;
    iframe.src = url;
    iframe.className = 'floatingiframe';
    iframe.id = 'floatingiframe';
    body.appendChild(iframe);
    
    var iframekiller = document.createElement('div');
    iframekiller.className = 'iframekiller';
    iframekiller.addEventListener('mouseup', function () {
        body.removeChild(iframe);
        body.removeChild(this);
    }, false);
    body.appendChild(iframekiller);
};

GM_addStyle(['.floatingiframe {position:fixed; right:0; top:0; z-index:9999999;}']);
GM_addStyle(['.iframekiller {position:fixed; left:0; top:0; width:100%; height:100%; z-index:100; opacity: 1}']);

filter(document.body);
if (window.AutoPagerize)
    window.AutoPagerize.addFilter(function(docs){docs.forEach(filter);});