windows.getLastFocused()
Gets the window that was most recently focused — typically the window 'on top'.
This is an asynchronous function that returns a Promise
.
Syntax
js
let gettingWindow = browser.windows.getLastFocused(
getInfo // optional object
)
Parameters
getInfo
Optional-
object
.populate
Optional-
boolean
. Iftrue
, thewindows.Window
object will have atabs
property that contains a list oftabs.Tab
objects representing the tabs in the window. TheTab
objects only contain theurl
,title
andfavIconUrl
properties if the extension's manifest file includes the"tabs"
permission or host permissions matching the tab's URL. windowTypes
Optional-
An
array
ofwindows.WindowType
objects. If set, thewindows.Window
returned will be filtered based on its type. If unset the default filter is set to['normal', 'panel', 'popup']
, with'panel'
window types limited to the extension's own windows.
Note: If supplied, the windowTypes
component of getInfo
is ignored. The use of windowTypes
has been deprecated as of Firefox 62.
Return value
A Promise
that will be fulfilled with a windows.Window
object containing the details of the last focused window. If any error occurs, the promise will be rejected with an error message.
Browser compatibility
BCD tables only load in the browser
Examples
Get the last focused window, and log the tabs it contains. Note that you'll need the "tabs" permission or matching host permissions to access tab URLs.
js
function logTabs(windowInfo) {
for (const tabInfo of windowInfo.tabs) {
console.log(tabInfo.url);
}
}
function onError(error) {
console.error(`Error: ${error}`);
}
browser.browserAction.onClicked.addListener((tab) => {
browser.windows.getLastFocused({ populate: true }).then(logTabs, onError);
});
Note: This API is based on Chromium's chrome.windows
API. This documentation is derived from windows.json
in the Chromium code.