public ComponentEventImpl(String eventType,
    String originatingComponentId,
    EventContext context,
    ComponentEventCallback handler,
    PageResources pageResources,
    Logger logger) 
{
        super(handler, logger);
        this.eventType = eventType;
        this.originatingComponentId = originatingComponentId;
        this.pageResources = pageResources;
        this.context = context;
}

Parameters:

eventType - non blank string used to identify the type of event that was triggered

originatingComponentId - the id of the component that triggered the event

context - provides access to parameter values

handler - invoked when a non-null return value is obtained from an event handler method

pageResources - provides access to common resources and services

logger - used to log method invocations

 public Object coerceContext(int index,
    String desiredTypeName) 
{
        if (index  >= context.getCount()) throw new IllegalArgumentException(ServicesMessages
                .contextIndexOutOfRange(getMethodDescription()));
        try
        {
            Class desiredType = pageResources.toClass(desiredTypeName);
            return context.get(desiredType, index);
        }
        catch (Exception ex)
        {
            throw new IllegalArgumentException(
                    ServicesMessages.exceptionInMethodParameter(getMethodDescription(), index, ex), ex);
        }
}

 public Object[] getContext() 
{
        int count = context.getCount();
        Object[] result = new Object[count];
        for (int i = 0; i <  count; i++)
            result[i] = context.get(Object.class, i);
        return result;
}

 public EventContext getEventContext() 
{
        return context;
}

 public boolean matches(String eventType,
    String componentId,
    int parameterCount) 
{
        return this.eventType.equalsIgnoreCase(
                eventType) && context.getCount()  >= parameterCount && (originatingComponentId.equalsIgnoreCase(
                componentId) || componentId.equals(""));
}

 public String toString() 
{
        return String.format("ComponentEvent[%s from %s]", eventType,
                             originatingComponentId.length() == 0 ? "(self)" : originatingComponentId);
}