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com.voytechs.html.event
Class DispatcherBroker  

java.lang.Object
  com.voytechs.html.event.DispatcherBroker

Direct Known Subclasses:

HtmlDispatcherBroker

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public abstract class DispatcherBroker

extends java.lang.Object

Specialized container object for holding dispatcher listeners. Because of dynamic binding of HTML components and the dispatcher, addtion of listeners has to be delayed until the dispatcher bound and initlizated otherwise the binding can't occur. This object adapts to the HTML component special requirements such as generating a URL acceptable parameters or HTML Form tags.

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Field Summary
private  Dispatcher	dispatcher
private  int	eventType
private  int	id
private  java.util.Vector	listenerRequests

 

Constructor Summary

DispatcherBroker(int eventType)           Initialized the broker.

 

Method Summary
protected  void	addDelayedListeners()           Since event listeners are added in the constructor of the element, the dispatcher isn't bound to the component at the time.
void	addListener(ListenerRequest request)           Add listener.
int	getEventType()           Get eventType.
int	getId()           Get event ID
protected  boolean	hasListenerRequests()
static void	main(java.lang.String[] args)           Test function for DispatcherBroker
protected  void	setDispatcher(Dispatcher dispatcher)           Sets the global dispatcher.

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

id

private int id

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eventType

private int eventType

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listenerRequests

private java.util.Vector listenerRequests

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dispatcher

private Dispatcher dispatcher

Constructor Detail

DispatcherBroker

public DispatcherBroker(int eventType)

Initialized the broker.

Method Detail

setDispatcher

protected void setDispatcher(Dispatcher dispatcher)
                      throws EventException

Sets the global dispatcher. Late bindings, adding delayed listeners, etc. Called after the full component tree is built.

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addListener

public void addListener(ListenerRequest request)
                 throws EventException

Add listener. Can add listeners only after the init method is called which means that all of the bindings to the dispatcher have already occured and we can safely register our listener.

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hasListenerRequests

protected boolean hasListenerRequests()

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addDelayedListeners

protected void addDelayedListeners()
                            throws EventException

Since event listeners are added in the constructor of the element, the dispatcher isn't bound to the component at the time. The listeners are added to a queue instead and only registered with the dispatcher from the init() method which is called after the dispatcher is bound.

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getId

public int getId()
          throws EventException

Get event ID

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getEventType

public int getEventType()

Get eventType.

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main

public static void main(java.lang.String[] args)

Test function for DispatcherBroker

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Overview  Package   Class  Use  Deprecated  Index
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