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menus.onHidden - Mozilla | MDN
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menus.onHidden
Fired when the browser stops displaying a menu: for example because the user clicked outside it or selected an item.
It is only triggered for menus that can be manipulated using the menus API itself: this includes the context menu, the browser's tools menu, and the bookmarks menu.
This is most likely to be used in combination with the menus.onShown and menus.refresh() APIs: an extension can update the menu when it is shown, then undo the changes when it is hidden.
Firefox makes this event available via the contextMenus namespace as well as the menus namespace.
Syntax
js
browser.menus.onHidden.addListener(listener)
browser.menus.onHidden.removeListener(listener)
browser.menus.onHidden.hasListener(listener)
Events have three functions:
addListener(listener)-
Adds a listener to this event.
removeListener(listener)-
Stop listening to this event. The
listenerargument is the listener to remove. hasListener(listener)-
Check whether
listeneris registered for this event. Returnstrueif it is listening,falseotherwise.
addListener syntax
Parameters
listener-
The function called when this event occurs. The function is passed no parameters.
Examples
This example just logs a message whenever a menu is hidden:
js
function hidden() {
console.log("Menu was hidden");
}
browser.menus.onHidden.addListener(hidden);
Browser compatibility
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