Class EventMapper

source code

object --+
         |
        EventMapper

Handles events and callbacks for widgets.Widget and derived classes.

Every PyChan widget has an EventMapper instance as attribute event_mapper.

This instance handles all necessary house-keeping. Such an event mapper can be either attached or detached. In its attached state an EventListenerBase is added to the Guichan widget and will redirect the events to the callbacks.

In its detached state no events are received from the real Guichan widget.

The event mapper starts in the detached state. When a new event is captured the mapper attaches itself automatically. The widget doesn't need to handle that.