windows.onBoundsChanged

Fired when a window is resized or moved. This event is fired when the new bounds are committed. It doesn't fire for in-progress changes.

Syntax

js
browser.windows.onBoundsChanged.addListener(listener)
browser.windows.onBoundsChanged.removeListener(listener)
browser.windows.onBoundsChanged.hasListener(listener)

Events have three functions:

addListener(listener)

Adds a listener to this event.

removeListener(listener)

Stop listening to this event. The listener argument is the listener to remove.

hasListener(listener)

Check whether a listener is registered for this event. Returns true if it is listening, false otherwise.

addListener syntax

Parameters

listener

The function called when this event occurs. The function is passed this argument:

window

A windows.Window object containing details of the window that was resized or moved.

Examples

Log the IDs of windows that are moved or resized:

js
browser.windows.onBoundsChanged.addListener((window) => {
  console.log(`New window: ${window.id}`);
});

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Firefox for Android
Safari on iOS
onBoundsChanged
Chrome – Full support
Chrome 86 (Release date: 2020-10-20)
footnote Full support
Edge – Full support
Edge 86 (Release date: 2020-10-09)
footnote Full support
Firefox – No support
Firefox
footnote
footnote See bug 1762975
Opera – Full support
Opera 72 (Release date: 2020-10-21)
footnote Full support
Safari – No support
Safari
footnote
footnote See bug 261002
Firefox for Android – No support
Firefox for Android
footnote
footnote See bug 1762975
Safari on iOS – No support
Safari on iOS
footnote
footnote See bug 261002

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
See implementation notes.

Note: This API is based on Chromium's chrome.windows API. This documentation is derived from windows.json in the Chromium code.