uBlock/platform/mv3/scriptlets/css-specific.js
Raymond Hill 72726a4759
[mv3] Refactor content scripts related to specific cosmetic filtering
Specifically, avoid long list of hostnames for the `matches`
property[1] when registering the content scripts, as this was causing
whole browser freeze for long seconds in Chromium-based browsers
(reason unknown).

The content scripts themselves will sort out which cosmetic filters to
apply on which websites.

This change makes it now possible to support annoyances-related lists,
and thus two lists have been added:
- EasyList -- Annoyances
- EasyList -- Cookies

Related issue:
- https://github.com/uBlockOrigin/uBOL-issues/issues/5

These annoyances-related lists contains many thousands of specific
cosmetic filters and as a result, before the above change this was
causing long seconds of whole browser freeze when simply modifying
the blocking mode of a specific site via the slider in the popup
panel.

It is now virtually instantaneous, at the cost of injecting larger
cosmetic filtering-related content scripts (which typically should
be garbage-collected within single-digit milliseconds).

Also, added support for entity-based cosmetic filters. (They were
previously discarded).

---

[1] https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/scripting/RegisteredContentScript
2023-06-03 22:08:42 -04:00

55 lines
1.8 KiB
JavaScript

/*******************************************************************************
uBlock Origin - a browser extension to block requests.
Copyright (C) 2019-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
*/
/* jshint esversion:11 */
'use strict';
// ruleset: $rulesetId$
/******************************************************************************/
/// name css-specific
/******************************************************************************/
// Important!
// Isolate from global scope
(function uBOL_cssSpecificImports() {
/******************************************************************************/
const argsList = self.$argsList$;
const hostnamesMap = new Map(self.$hostnamesMap$);
const entitiesMap = new Map(self.$entitiesMap$);
const exceptionsMap = new Map(self.$exceptionsMap$);
self.specificImports = self.specificImports || [];
self.specificImports.push({ argsList, hostnamesMap, entitiesMap, exceptionsMap });
/******************************************************************************/
})();
/******************************************************************************/