Stop fixed/sticky elements leeching my valuable screen real estate!
当前为
// ==UserScript==
// @name Unfix
// @description Stop fixed/sticky elements leeching my valuable screen real estate!
// @author Remph
// @license GPL-3.0-or-later
// @version 0.2.5
// @include *
// @namespace https://git.sr.ht/~remph/unfix.js
// @homepageURL https://git.sr.ht/~remph/unfix.js
// @supportURL https://git.sr.ht/~remph/unfix.js
// @grant none
// @compatible firefox
// ==/UserScript==
'use strict';
function unfix_element(e) {
var newpos;
switch (getComputedStyle(e).position) {
case 'fixed':
newpos = 'absolute';
break;
case 'sticky':
newpos = 'relative';
}
if (newpos) {
// console.debug('setting ' + e.tagName + ' to ' + newpos);
e.style.setProperty('position', newpos, 'important');
/* I would rather not have abused !important ^ here, to let
pages specify when the position really *is* important
and shouldn't be elided, but no-one can be responsible
with it so I will take it away */
}
}
function unfix_tree(root) {
if (root.nodeType !== Node.ELEMENT_NODE)
return;
unfix_element(root);
// NodeFilter.SHOW_ATTRIBUTE ?
var t = document.createTreeWalker(root, NodeFilter.SHOW_ELEMENT);
while (t.nextNode())
unfix_element(t.currentNode);
}
(function () {
// wait for window to finish loading to prevent races on style
window.addEventListener('load', () => unfix_tree(document.body));
// Catch sneaky attempts to re-fix an element from js
new MutationObserver((muts) => muts.forEach(function (mut) {
/* Are these sure to be mutually exclusive? Can an
attributes change also have addedNodes? */
switch (mut.type) {
case 'attributes':
unfix_element(mut.target); // if (mut.attributeName == 'style') ?
break;
case 'childList':
mut.addedNodes.forEach(unfix_tree);
}
})).observe(document.body, {
subtree: true, childList: true, attributes: true
});
})();