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/*
* NoScript Commons Library
* Reusable building blocks for cross-browser security/privacy WebExtensions.
* Copyright (C) 2020-2024 Giorgio Maone <https://maone.net>
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
* 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 <https://www.gnu.org/licenses/>.
*/
var NavCache = (() => {
let tabs = {};
let listeners = new Set();
let clone = structuredClone || (o => JSON.parse(JSON.stringify(o)));
browser.webNavigation.onCommitted.addListener(({tabId, frameId, url, parentFrameId}) => {
let tab = tabs[tabId];
let frame = tab && tab[frameId];
if (!tab || frameId == 0) {
tabs[tabId] = tab = {};
}
let previousUrl = frame && frame.url;
frame = tab[frameId] = {previousUrl, url, parentFrameId};
if (previousUrl !== url) {
for (let l of listeners) {
try {
l(Object.assign({tabId, frameId}, frame));
} catch (e) {
console.error(e);
}
}
}
});
browser.tabs.onRemoved.addListener(tabId => {
delete tabs[tabId];
});
return {
wakening: (async () => {
async function populateFrames(tab) {
let tabId = tab.id;
let frames = await browser.webNavigation.getAllFrames({tabId});
if (!frames) return; // invalid tab
if (!tabs[tabId]) tabs[tabId] = {};
let top = tabs[tabId];
for ({frameId, url, parentFrameId} of frames) {
tab[frameId] = {url, parentFrameId};
}
}
await Promise.all((await browser.tabs.query({})).map(populateFrames));
return true;
})(),
getTab(tabId) {
return clone(tabs[tabId] || {});
},
getFrame(tabId, frameId) {
return clone((tabs[tabId] || {})[frameId]);
},
onUrlChanged: {
addListener(listener) {
listeners.add(listener);
},
removeListener(listener) {
listeners.remove(listeners);
}
}
};
})();
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