I am a Controller that modifies the scheduling of user activities so that the three mouse buttons can be used to make selections or display menus. The menu items are unary messages to the value of sending my instance the message menuMessageReceiver.

	initialize-release
	release reset

	menu messages
	blueButtonActivity performMenuMessage: redButtonActivity yellowButtonActivity

	menu setup
	redButtonMenu:redButtonMessages:

	pluggable menus
	getPluggableYellowButtonMenu: pluggableYellowButtonActivity: shiftedTextPaneMenuRequest shiftedYellowButtonActivity unshiftedYellowButtonActivity

	control defaults	top
	controlActivity Refer to the comment in Controller|controlActivity.
	isControlActive In contrast to class Controller, only blue button but not yellow button events will end the receiver's control loop.

	initialize-release	top
	release Breaks the cycle between the receiver and its view. It is usually not necessary to send release provided the receiver's view has been properly released independently.
	reset Eliminate references to all mouse button menus.

	menu messages	top
	blueButtonActivity This normally opens the window menu. It is a no-op here as only the StandardSystemController deals with that kind of menus.
	performMenuMessage: Perform a menu command by sending self the message aSelector. Default does nothing special.
	redButtonActivity Determine which item in the red button pop-up menu is selected. If one is selected, then send the corresponding message to the object designated as the menu message receiver.
	yellowButtonActivity This normally opens a popup menu. Determine the selected item and, if one is selected, then send the corresponding message to either the model or the receiver.

	menu setup	top
	redButtonMenu:redButtonMessages: Initialize the pop-up menu that should appear when the user presses the red mouse button to be aSystemMenu. The corresponding messages that should be sent are listed in the array, anArray.

	pluggable menus	top
	getPluggableYellowButtonMenu:
	pluggableYellowButtonActivity: Invoke the model's popup menu.
	shiftedTextPaneMenuRequest The user chose the more... branch from the text-pane menu.
	shiftedYellowButtonActivity Invoke the model's special popup menu.
	unshiftedYellowButtonActivity Invoke the model's normal popup menu.