mirror of
https://github.com/gorhill/uBlock.git
synced 2026-03-11 09:04:36 +00:00
138 lines
4.6 KiB
JavaScript
138 lines
4.6 KiB
JavaScript
/*******************************************************************************
|
|
|
|
uBlock Origin Lite - a comprehensive, MV3-compliant content blocker
|
|
Copyright (C) 2025-present Raymond Hill
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see {http://www.gnu.org/licenses/}.
|
|
|
|
Home: https://github.com/gorhill/uBlock
|
|
*/
|
|
|
|
(async ( ) => {
|
|
|
|
/******************************************************************************/
|
|
|
|
const ubolOverlay = self.ubolOverlay;
|
|
if ( ubolOverlay === undefined ) { return; }
|
|
if ( ubolOverlay.file === '/zapper-ui.html' ) { return; }
|
|
|
|
/******************************************************************************/
|
|
|
|
// https://www.reddit.com/r/uBlockOrigin/comments/bktxtb/scrolling_doesnt_work/emn901o
|
|
// Override 'fixed' position property on body element if present.
|
|
|
|
// With touch-driven devices, first highlight the element and remove only
|
|
// when tapping again the highlighted area.
|
|
|
|
function zapElementAtPoint(mx, my, options) {
|
|
if ( options.highlight ) {
|
|
const elem = ubolOverlay.elementFromPoint(mx, my);
|
|
if ( elem ) {
|
|
ubolOverlay.highlightElements([ elem ]);
|
|
}
|
|
return;
|
|
}
|
|
|
|
let elemToRemove = ubolOverlay.highlightedElements?.[0] ?? null;
|
|
if ( elemToRemove === null && mx !== undefined ) {
|
|
elemToRemove = ubolOverlay.elementFromPoint(mx, my);
|
|
}
|
|
|
|
if ( elemToRemove instanceof Element === false ) { return; }
|
|
|
|
const getStyleValue = (elem, prop) => {
|
|
const style = window.getComputedStyle(elem);
|
|
return style ? style[prop] : '';
|
|
};
|
|
|
|
// Heuristic to detect scroll-locking: remove such lock when detected.
|
|
let maybeScrollLocked = elemToRemove.shadowRoot instanceof DocumentFragment;
|
|
if ( maybeScrollLocked === false ) {
|
|
let elem = elemToRemove;
|
|
do {
|
|
maybeScrollLocked =
|
|
parseInt(getStyleValue(elem, 'zIndex'), 10) >= 1000 ||
|
|
getStyleValue(elem, 'position') === 'fixed';
|
|
elem = elem.parentElement;
|
|
} while ( elem !== null && maybeScrollLocked === false );
|
|
}
|
|
if ( maybeScrollLocked ) {
|
|
const doc = document;
|
|
if ( getStyleValue(doc.body, 'overflowY') === 'hidden' ) {
|
|
doc.body.style.setProperty('overflow', 'auto', 'important');
|
|
}
|
|
if ( getStyleValue(doc.body, 'position') === 'fixed' ) {
|
|
doc.body.style.setProperty('position', 'initial', 'important');
|
|
}
|
|
if ( getStyleValue(doc.documentElement, 'position') === 'fixed' ) {
|
|
doc.documentElement.style.setProperty('position', 'initial', 'important');
|
|
}
|
|
if ( getStyleValue(doc.documentElement, 'overflowY') === 'hidden' ) {
|
|
doc.documentElement.style.setProperty('overflow', 'auto', 'important');
|
|
}
|
|
}
|
|
elemToRemove.remove();
|
|
ubolOverlay.highlightElementAtPoint(mx, my);
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
function onKeyPressed(ev) {
|
|
if ( ev.key !== 'Delete' && ev.key !== 'Backspace' ) { return; }
|
|
ev.stopPropagation();
|
|
ev.preventDefault();
|
|
zapElementAtPoint();
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
function startZapper() {
|
|
self.addEventListener('keydown', onKeyPressed, true);
|
|
}
|
|
|
|
function quitZapper() {
|
|
self.removeEventListener('keydown', onKeyPressed, true);
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
function onMessage(msg) {
|
|
switch ( msg.what ) {
|
|
case 'startTool':
|
|
startZapper();
|
|
break;
|
|
case 'quitTool':
|
|
quitZapper();
|
|
break;
|
|
case 'zapElementAtPoint':
|
|
zapElementAtPoint(msg.mx, msg.my, msg.options);
|
|
if ( msg.options.highlight !== true && msg.options.stay !== true ) {
|
|
quitZapper();
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/******************************************************************************/
|
|
|
|
await ubolOverlay.install('/zapper-ui.html', onMessage);
|
|
|
|
/******************************************************************************/
|
|
|
|
})();
|
|
|
|
|
|
void 0;
|