Adds favicons next to Google search results.
目前為
// ==UserScript==
// @name FaviconizeGoogle
// @namespace http://userscripts.org/users/89794 (joeytwiddle)
// @description Adds favicons next to Google search results.
// @downstreamURL http://userscripts.org/scripts/source/48636.user.js
// @version 1.2.8
// @include /https?:\/\/((www\.)?|encrypted\.)google\..*\/(search|webhp|\?gws_rd|\?gfe_rd)?.*/
// @grant none
// ==/UserScript==
// DONE: Provided more options where to place favicon: by the link or by the
// url, before or after, inside or outside the link. However in my opinion
// they all suck except the default. ;)
// Broken images would be messy, but Firefox seems to hide them after a while
// anyway. We do still see the gap from the image's padding though!
// It might be desirable to check each image actually exists/loads, or remove it.
// Is that possible, without making an http request ourselves?
// Third-party host URL detection is implemented leniently, and accordingly
// hostname extraction implemented aggressively, which results in favicons
// being given to unexpected things like bookmarklets which contain a site url.
var placeFaviconByUrl = false;
var placeFaviconAfter = false;
var placeFaviconInsideLink = false;
function filterListBy(l,c) {
var ret = new Array();
for (var i=0;i<l.length;i++) {
var it = l[i];
if (c(it)) {
ret[ret.length] = it;
}
}
return ret;
}
function createFaviconFor(url) {
var host = url.replace(/^[^\/]*:\/\//,'').replace(/\/.*$/,'');
// if (host == document.location.host) {
// return null;
// }
// Use protocol (http/https) of current page, to avoid mixed-content warnings/failures.
var protocol = document.location.protocol.replace(/:$/, '');
//console.log("[FaviconizeGoogle.user.js] protocol:" ,protocol);
var img = document.createElement('IMG');
//img.src = protocol + '://'+host+'/favicon.ico';
img.src = '//www.google.com/s2/favicons?domain=' + host; // Google's cache will sometimes provide a favicon we would have missed, e.g. if the site uses .png instead of .ico. Thanks to NV for suggesting this, and to Google.
//img.src = '//g.etfv.co/http://" + host; // As suggested by decembre
img.width = '16';
img.height = '16';
img.className = 'favicon';
img.border = 0;
img.style.display = 'none';
img.addEventListener('load',function(){ img.style.display = ''; },false);
return img;
}
function getGoogleResultsLinks() {
/*
return filterListBy(document.getElementsByTagName('a'), function (x) {
// Most pages show links with class 'l'
// But on pages where the first result has an indented block of sub-pages,
// the indented links have class 'l' but all the other links have no class but parent class 'r'
return x.className === 'l' || x.parentNode.className === 'r';
});
*/
// a.l
// a.fl are small one-line sub-results. Search "squeak" and see the Wikipedia result.
return document.querySelectorAll('.g a:not(.fl)');
}
function getElementsByClassName(cN) {
return getElementsByTagNameAndClassName("*",cN);
}
// console.log("Got links = "+links.snapshotLength);
var style = document.createElement('STYLE');
var padSide = (placeFaviconAfter?'left':'right');
style.innerHTML = ".favicon { padding-"+padSide+": 4px; vertical-align: middle; width: 1em; height: 1em; padding-bottom: 0.2em; }";
document.getElementsByTagName('head')[0].appendChild(style);
function updateFavicons() {
// var links = document.evaluate("//a[@class='l']",document,null,6,null);
// var links = filterListBy(document.links, function(x){ return x.className=='l'; } );
// var links = document.links.filter( function(x){ return x.className=='l'; } );
var links = getGoogleResultsLinks();
// Allows it to work on any sites:
if (links.length === 0) {
links = document.getElementsByTagName("A");
}
// for (var i=0;i<links.snapshotLength;i++) {
// var link = links.snapshotItem(i);
for (var i = 0; i < links.length; i++) {
var link = links[i];
// if (link.href.match('^javascript:') || link.href.match('^#')) {
// continue;
// }
var targetUrl = link.getAttribute('data-href') || link.href;
//// Skip relative and same-host links:
if (targetUrl.match(/^[/]/) || targetUrl.match("://"+document.location.host)) {
continue;
}
//console.log("[faviconizegoogle.user.js] link.getAttribute(data-faviconized):" ,link.getAttribute("data-faviconized"));
if (link.getAttribute("data-faviconized")) {
// Already faviconized
console.log("[faviconizegoogle.user.js] Skipping");
continue;
}
link.setAttribute("data-faviconized", "yes");
var img = createFaviconFor(targetUrl);
var targetNode = (placeFaviconByUrl ? link.parentNode.parentNode.getElementsByTagName('cite')[0] : link);
if (placeFaviconInsideLink) {
if (placeFaviconAfter) {
targetNode.appendChild(img);
} else {
targetNode.insertBefore(img,targetNode.firstChild);
}
} else {
if (placeFaviconAfter) {
targetNode.parentNode.insertBefore(img,targetNode.nextSibling);
} else {
targetNode.parentNode.insertBefore(img,targetNode);
}
}
}
}
// TODO: Use MutationObserver instead
var last_srg = null;
function checkForUpdate () {
var new_srg = document.getElementsByClassName("srg")[0];
//console.log("[FaviconizeGoogle.user.js] last_srg:" ,last_srg);
//console.log("[faviconizegoogle.user.js] new_srg:" ,new_srg);
if (new_srg !== last_srg) {
//console.log("Page change detected!");
updateFavicons();
last_srg = new_srg;
} else {
//console.log("Pages are the same:", last_srg, new_srg);
}
setTimeout(checkForUpdate, 1000);
}
setTimeout(checkForUpdate, 100);