Standard XPCOM components 编辑

There are a number of components provided in the standard implementation of XPCOM; these are as follows.

nsCategoryManager

The XPCOM Category Manager.

nsDirectoryService

The XPCOM Directory Service. This service returns the locations of "well known" directories in an OS-independent manner. For instance, it can give you the path of the system's temporary directory, desktop directory, current working directory, and so on.

nsLocalFile

A component implementing nsILocalFile.

nsObserverService

The XPCOM Observer Service.

nsScriptableInputStream

A component implementing nsIScriptableInputStream.