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A component may declare as part of its options structure, a top-level structure named events whose keys correspond to event types that this component wishes to support, and whose values are either null or the string values "unicast" or "preventable" corresponding to the accepted arguments for getEventFirer. As part of the normal construction process of fluid.initView(), the top-level that object for the component will automatically have constructed a corresponding event firer object for each one of these events.
For example, the section of the default options for the Reorderer component , shown to the right, indicates that the Reorderer supports 6 events of the listed types, of which one, onBeginMove represents a "preventable" event - a listener may countermand the beginMove effect by returning true when the event is received. If the top-level that constructed by fluid.initView() is stored in a variable named thatReorderer, these events and firers will be accessible at its top level by making a call for example of the form thatReorderer.onSelect.fire(item).
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