Window.controllers - Web APIs 编辑

Non-standard

This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The controllers property of the Window interface returns the XUL controllers of the chrome window.

Syntax

controllers = window.controllers

• controllers is an object of type XULControllers (nsIControllers).

Specifications

XUL-specific. Not part of specification.

By default, a window's controller contains the code that supports the global window commands.

Chrome code can add controllers (to be used in conjunction with the goDoCommand and goUpdateCommand functions in globalOverlay.js).

However, the added controllers must be explicitly removed when the window is unloaded, as this is not done automatically.

Each missing removal can cause

ASSERTION: XPConnect is being called on a scope without a 'Components' property!