module Test::Unit::Util::Observable

クラスの継承リスト: Test::Unit::Util::Observable

要約

This is a utility class that allows anything mixing it in to notify a set of listeners about interesting events.

定義	説明
`add_listener(channel_name, listener_key=NOTHING, &listener)`	Adds the passed proc as a listener on the channel indicated by channel_name. listener_key is used to remove the listener later; if none is specified, the proc itself is used.
`notify_listeners(channel_name, *arguments)`	Calls all the procs registered on the channel indicated by channel_name. If value is specified, it is passed in to the procs, otherwise they are called with no arguments.
`remove_listener(channel_name, listener_key)`	Removes the listener indicated by listener_key from the channel indicated by channel_name. Returns the registered proc, or nil if none was found.