mirror of
https://github.com/gorhill/uBlock.git
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5d60df4b1b
`webext.js` module needs to be explicitly imported. Added time-based heuristic to decide when a webpage loses communication with background process.
86 lines
2.9 KiB
JavaScript
86 lines
2.9 KiB
JavaScript
/*******************************************************************************
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uBlock Origin - a comprehensive, efficient content blocker
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Copyright (C) 2014-present Raymond Hill
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see {http://www.gnu.org/licenses/}.
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Home: https://github.com/gorhill/uBlock
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*/
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import webext from './webext.js';
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/******************************************************************************/
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// Broadcast a message to all uBO contexts
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let broadcastChannel;
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export function broadcast(message) {
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if ( broadcastChannel === undefined ) {
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broadcastChannel = new self.BroadcastChannel('uBO');
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}
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broadcastChannel.postMessage(message);
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}
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/******************************************************************************/
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// Broadcast a message to all uBO contexts and all uBO's content scripts
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export async function broadcastToAll(message) {
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broadcast(message);
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const tabs = await vAPI.tabs.query({
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discarded: false,
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});
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const bcmessage = Object.assign({ broadcast: true }, message);
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for ( const tab of tabs ) {
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webext.tabs.sendMessage(tab.id, bcmessage).catch(( ) => { });
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}
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}
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/******************************************************************************/
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export function onBroadcast(listener) {
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const bc = new self.BroadcastChannel('uBO');
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bc.onmessage = ev => listener(ev.data || {});
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return bc;
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}
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/******************************************************************************/
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export function filteringBehaviorChanged(details = {}) {
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if ( typeof details.direction !== 'number' || details.direction >= 0 ) {
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filteringBehaviorChanged.throttle.offon(727);
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}
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broadcast(Object.assign({ what: 'filteringBehaviorChanged' }, details));
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}
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filteringBehaviorChanged.throttle = vAPI.defer.create(( ) => {
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const { history, max } = filteringBehaviorChanged;
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const now = (Date.now() / 1000) | 0;
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if ( history.length >= max ) {
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if ( (now - history[0]) <= (10 * 60) ) { return; }
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history.shift();
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}
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history.push(now);
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vAPI.net.handlerBehaviorChanged();
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});
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filteringBehaviorChanged.history = [];
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filteringBehaviorChanged.max = Math.min(
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browser.webRequest.MAX_HANDLER_BEHAVIOR_CHANGED_CALLS_PER_10_MINUTES - 1,
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19
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);
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/******************************************************************************/
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