Inner event system.
| attachEvent | attaches the handler to an inner event of the component |
| blockEvent | temporarily blocks triggering of ALL events of the calling object |
| callEvent | calls an inner event |
| detachEvent | detaches a handler from an event (which was attached before by the attachEvent method) |
| hasEvent | checks whether the component has the specified event handler |
| mapEvent | routes events from one object to another |
| unblockEvent | cancels events blocking that was enabled by the 'blockEvent' command |
| on | allows attaching custom handlers to inner events of the component |