Fired whenever the list of closed tabs or windows changes.
browser.sessions.onChanged.addListener(listener) browser.sessions.onChanged.removeListener(listener) browser.sessions.onChanged.hasListener(listener)
Events have three functions:
addListener(callback)
removeListener(listener)
listener
argument is the listener to remove.hasListener(listener)
listener
is registered for this event. Returns true
if it is listening, false
otherwise.callback
Function that will be called when this event occurs. It's passed no parameters.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
onChanged |
Yes |
79 |
53 |
? |
Yes |
No |
? |
? |
No |
? |
? |
? |
This very annoying extension listens for onChanged
, then immediately restores the most recently closed session, thus making it impossible to close windows or tabs:
function restoreSession(sessionInfos) { if (!sessionInfos.length) { console.log("No sessions found") return; } let sessionInfo = sessionInfos[0]; if (sessionInfo.tab) { browser.sessions.restore(sessionInfo.tab.sessionId); } else { browser.sessions.restore(sessionInfo.window.sessionId); } } function onError(error) { console.log(error); } function restoreMostRecent() { var gettingSessions = browser.sessions.getRecentlyClosed({ maxResults: 1 }); gettingSessions.then(restoreSession, onError); } browser.sessions.onChanged.addListener(restoreMostRecent);
Note: This API is based on Chromium's chrome.sessions
API.
Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.
© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/sessions/onChanged