list of classes

RSEvent

RSEvent is the root of all the events handled by Roassal. Events are expressed as an instance of a subclass of RSEvent. Some events describe the actions made by the users (e.g., RSMouseDragEnd), some other event describes some state change of a shape (e.g., RSShapeAddedEvent, RSHighlightEvent).

Responsibility: model an event triggered either by a user action or a state change.

Collaborators: events are emitted by RSAthensMorph or by some interaction (e.g., RSHighlightable)

Variables:

• canvas: the RSCanvas
• morph: the RSAthensMorph
• shape: the shape related to the event