Using Contextual Events
There are several pieces that define a contextual event:
1. A container page that contains the regions to be coordinated
2. A producer that invokes a method to raise the event and provide a payload (information needed by the event)
3. A consumer that is the target of the event
4. A handler method that is bound either to the consumer page fragment or to the page containing the regions
5. An event mapping on the container page definition that specifies:
The producer region and payload method
The event name
The consumer and event handler
The parameter (payload) to pass to the event
The steps required to set up a contextual event are described in the next few slides.