interface of Components.utils
Returns true if the js file located at ‘registryLocation’ location has
been loaded previously via the import method above. Returns false
otherwise.
| resourceURI | A resource:// URI string representing the location of the js file to be checked if it is already loaded or not. |
| boolean, true if the js file has been loaded via import. false otherwise |
Return the keys in a weak map. This operation is
non-deterministic because it is affected by the scheduling of the
garbage collector and the cycle collector.
This should only be used to write tests of the interaction of
the GC and CC with weak maps.
| aMap | weak map or other JavaScript value |
| If aMap is a weak map object, return the keys of the weak map as an array. Otherwise, return undefined. |
Determines whether this object is backed by a DeadObjectProxy.
Dead-wrapper objects hold no other objects alive (they have no outgoing
reference edges) and will throw if you touch them (e.g. by
reading/writing a property).
Determines whether this object is a cross-process wrapper.
Check whether the given object is an XrayWrapper.
Waive Xray on a given value. Identity op for primitives.
Strip off Xray waivers on a given value. Identity op for primitives.
Gets the name of the JSClass of the object.
if |aUnwrap| is true, all wrappers are unwrapped first. Unless you’re
specifically trying to detect whether the object is a proxy, this is
probably what you want.
Get a DOM classinfo for the given classname. Only some class
names are supported.
Gets the incument global for the execution of this function. For internal
and testing use only.
If |callback| is passed, it is invoked with the incumbent global as its
sole argument. This allows the incumbent global to be measured in callback
environments with no scripted frames on the stack.
Forces the generation of an XPCWrappedJS for a given object. For internal
and testing use only. This is only useful to set up wrapper map conditions
for a testcase. The return value is not an XPCWrappedJS itself, but an
opaque nsISupports holder that keeps the underlying XPCWrappedJS alive.
| if | scope | is passed, the XPCWrappedJS is generated in the scope of that object. |
Retrieve the last time, in microseconds since epoch, that a given
watchdog-related event occured.
Valid categories:
“RuntimeStateChange” - Runtime switching between active and inactive states
“WatchdogWakeup” - Watchdog waking up from sleeping
“WatchdogHibernateStart” - Watchdog begins hibernating
“WatchdogHibernateStop” - Watchdog stops hibernating