9.1. Commands and Mozilla
Mozilla's command system is one of the less obvious aspects of the platform, and yet it is powerful and flexible. It allows the application programmer to think of application functionality as a set of messages. Each message is either a command or about a command. Used correctly, the command system acts as an integration and organizational point for application functions. Classic Mozilla's own use of its command system is fairly organized, but it is also buried in an abundance of other code.
The Mozilla command system is designed to support complex applications. Trivial applications do not need a command system; they can get by with simple event handlers. For complex applications, Mozilla's design goals are to provide ...
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