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/*******************************************************************************
uBlock Origin - a comprehensive, efficient content blocker
Copyright (C) 2014-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
*/
import webext from './webext.js';
/******************************************************************************/
// Broadcast a message to all uBO contexts
let broadcastChannel;
export function broadcast(message) {
if ( broadcastChannel === undefined ) {
broadcastChannel = new self.BroadcastChannel('uBO');
}
broadcastChannel.postMessage(message);
}
/******************************************************************************/
// Broadcast a message to all uBO contexts and all uBO's content scripts
export async function broadcastToAll(message) {
broadcast(message);
const tabs = await vAPI.tabs.query({
discarded: false,
});
const bcmessage = Object.assign({ broadcast: true }, message);
for ( const tab of tabs ) {
webext.tabs.sendMessage(tab.id, bcmessage).catch(( ) => { });
}
}
/******************************************************************************/
export function onBroadcast(listener) {
const bc = new self.BroadcastChannel('uBO');
bc.onmessage = ev => listener(ev.data || {});
return bc;
}
/******************************************************************************/
export function filteringBehaviorChanged(details = {}) {
if ( typeof details.direction !== 'number' || details.direction >= 0 ) {
filteringBehaviorChanged.throttle.offon(727);
}
broadcast(Object.assign({ what: 'filteringBehaviorChanged' }, details));
}
filteringBehaviorChanged.throttle = vAPI.defer.create(( ) => {
const { history, max } = filteringBehaviorChanged;
const now = (Date.now() / 1000) | 0;
if ( history.length >= max ) {
if ( (now - history[0]) <= (10 * 60) ) { return; }
history.shift();
}
history.push(now);
vAPI.net.handlerBehaviorChanged();
});
filteringBehaviorChanged.history = [];
filteringBehaviorChanged.max = Math.min(
browser.webRequest.MAX_HANDLER_BEHAVIOR_CHANGED_CALLS_PER_10_MINUTES - 1,
19
);
/******************************************************************************/
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