Auto-focuses on the first/main textbox of a site
// ==UserScript==
// @name Auto-focus on first textbox
// @namespace http://userscripts.org/users/23652
// @description Auto-focuses on the first/main textbox of a site
// @include http://*.youtube.com/*
// @include https://*.youtube.com/*
// @include http://*.facebook.com/*
// @include https://*.facebook.com/*
// @include http://*
// @include https://*
// @exclude file://*
// @copyright JoeSimmons
// @version 1.0.4
// @license GPL version 3 or any later version; http://www.gnu.org/copyleft/gpl.html
// @grant GM_addStyle
// ==/UserScript==
/* CHANGELOG
1.0.4 (4/30/2015)
- added a system where it makes sure the textbox is focused, especially for trouble sites like youtube
1.0.3 (1/30/2015)
- added some small delays for YouTube for it to work
- removed the use of JSL; it's unnecessary
*/
(function () {
'use strict';
// make sure the page is not in a frame
if (window.frameElement || window !== window.top) { return; }
var domain = window.document.domain,
rDomain = /([a-z0-9]+\.)?([a-z0-9-]+(\.[a-z0-9]+)+)$/,
site = '',
delay = 500, // by default, use a fairly slow interval as most sites don't mess with focus too much
e = document.querySelector('input[type="text"], input[type="search"], textarea'),
timeStart = Date.now(),
cancelled = false,
len, intv;
function cancel () {
if (cancelled === false) {
cancelled = true;
window.clearInterval(intv);
window.removeEventListener('keydown', cancel, false);
window.removeEventListener('mousedown', cancel, false);
window.removeEventListener('dblclick', cancel, false);
window.removeEventListener('dragstart', cancel, false);
window.removeEventListener('scroll', cancel, false);
window.removeEventListener('unload', cancel, false);
}
}
function doFocus(element, length) {
var diff = Date.now() - timeStart;
// don't run this function after user input is detected
if (cancelled === true) {
return;
}
// focus the text box
element.focus();
// highlight its text
if (length > 0 && typeof element.setSelectionRange === 'function') {
element.setSelectionRange(length, length);
}
// stop focusing if 10 seconds has passed
if (diff > 9999) {
cancel();
}
}
// grab the domain minus the subdomain
if ( domain.match(rDomain) ) {
site = domain.match(rDomain)[2];
}
// this section is for sites that require special attention ;)
switch (site) {
case 'youtube.com': {
// youtube is known to take focus away after it's been focused, so we do it often
e = document.querySelector('#masthead-search-term');
delay = 100;
break;
}
case 'userscripts.org': case 'google.com': {
e = document.querySelector('input[name="q"]');
break;
}
case 'facebook.com': {
e = document.querySelector('textarea[name="xhpc_message_text"], textarea[name="xhpc_message"]');
delay = 750;
break;
}
}
// if the element exists and is visible (in-view), then proceed
if (e && Math.max(e.offsetWidth, e.offsetHeight) > 0) {
len = e.value.length;
if (typeof e.focus === 'function') {
// keep auto-focusing until the user inputs an action, but not longer than 10 seconds
intv = window.setInterval(doFocus, delay, e, len);
window.addEventListener('keydown', cancel, false);
window.addEventListener('mousedown', cancel, false);
window.addEventListener('dblclick', cancel, false);
window.addEventListener('dragstart', cancel, false);
window.addEventListener('scroll', cancel, false);
window.addEventListener('unload', cancel, false);
}
}
}());