Java java.beans Class EventSetDescriptor（JDK8）

Constructor Detail

• EventSetDescriptor

  public EventSetDescriptor(Class<?> sourceClass,
                            String eventSetName,
                            Class<?> listenerType,
                            String listenerMethodName)
                     throws IntrospectionException

  Creates an EventSetDescriptor assuming that you are following the most simple standard design pattern where a named event "fred" is (1) delivered as a call on the single method of interface FredListener, (2) has a single argument of type FredEvent, and (3) where the FredListener may be registered with a call on an addFredListener method of the source component and removed with a call on a removeFredListener method.

  Parameters:

  sourceClass - The class firing the event.

  eventSetName - The programmatic name of the event. E.g. "fred". Note that this should normally start with a lower-case character.

  listenerType - The target interface that events will get delivered to.

  listenerMethodName - The method that will get called when the event gets delivered to its target listener interface.

  Throws:

  IntrospectionException - if an exception occurs during introspection.

• EventSetDescriptor

  public EventSetDescriptor(Class<?> sourceClass,
                            String eventSetName,
                            Class<?> listenerType,
                            String[] listenerMethodNames,
                            String addListenerMethodName,
                            String removeListenerMethodName)
                     throws IntrospectionException

  Creates an EventSetDescriptor from scratch using string names.

  Parameters:

  sourceClass - The class firing the event.

  eventSetName - The programmatic name of the event set. Note that this should normally start with a lower-case character.

  listenerType - The Class of the target interface that events will get delivered to.

  listenerMethodNames - The names of the methods that will get called when the event gets delivered to its target listener interface.

  addListenerMethodName - The name of the method on the event source that can be used to register an event listener object.

  removeListenerMethodName - The name of the method on the event source that can be used to de-register an event listener object.

  Throws:

  IntrospectionException - if an exception occurs during introspection.

• EventSetDescriptor

  public EventSetDescriptor(Class<?> sourceClass,
                            String eventSetName,
                            Class<?> listenerType,
                            String[] listenerMethodNames,
                            String addListenerMethodName,
                            String removeListenerMethodName,
                            String getListenerMethodName)
                     throws IntrospectionException

  This constructor creates an EventSetDescriptor from scratch using string names.

  Parameters:

  sourceClass - The class firing the event.

  eventSetName - The programmatic name of the event set. Note that this should normally start with a lower-case character.

  listenerType - The Class of the target interface that events will get delivered to.

  listenerMethodNames - The names of the methods that will get called when the event gets delivered to its target listener interface.

  addListenerMethodName - The name of the method on the event source that can be used to register an event listener object.

  removeListenerMethodName - The name of the method on the event source that can be used to de-register an event listener object.

  getListenerMethodName - The method on the event source that can be used to access the array of event listener objects.

  Throws:

  IntrospectionException - if an exception occurs during introspection.

  Since:

  1.4

• EventSetDescriptor

  public EventSetDescriptor(String eventSetName,
                            Class<?> listenerType,
                            Method[] listenerMethods,
                            Method addListenerMethod,
                            Method removeListenerMethod)
                     throws IntrospectionException

  Creates an EventSetDescriptor from scratch using java.lang.reflect.Method and java.lang.Class objects.

  Parameters:

  eventSetName - The programmatic name of the event set.

  listenerType - The Class for the listener interface.

  listenerMethods - An array of Method objects describing each of the event handling methods in the target listener.

  addListenerMethod - The method on the event source that can be used to register an event listener object.

  removeListenerMethod - The method on the event source that can be used to de-register an event listener object.

  Throws:

  IntrospectionException - if an exception occurs during introspection.

• EventSetDescriptor

  public EventSetDescriptor(String eventSetName,
                            Class<?> listenerType,
                            Method[] listenerMethods,
                            Method addListenerMethod,
                            Method removeListenerMethod,
                            Method getListenerMethod)
                     throws IntrospectionException

  This constructor creates an EventSetDescriptor from scratch using java.lang.reflect.Method and java.lang.Class objects.

  Parameters:

  eventSetName - The programmatic name of the event set.

  listenerType - The Class for the listener interface.

  listenerMethods - An array of Method objects describing each of the event handling methods in the target listener.

  addListenerMethod - The method on the event source that can be used to register an event listener object.

  removeListenerMethod - The method on the event source that can be used to de-register an event listener object.

  getListenerMethod - The method on the event source that can be used to access the array of event listener objects.

  Throws:

  IntrospectionException - if an exception occurs during introspection.

  Since:

  1.4

• EventSetDescriptor

  public EventSetDescriptor(String eventSetName,
                            Class<?> listenerType,
                            MethodDescriptor[] listenerMethodDescriptors,
                            Method addListenerMethod,
                            Method removeListenerMethod)
                     throws IntrospectionException

  Creates an EventSetDescriptor from scratch using java.lang.reflect.MethodDescriptor and java.lang.Class objects.

  Parameters:

  eventSetName - The programmatic name of the event set.

  listenerType - The Class for the listener interface.

  listenerMethodDescriptors - An array of MethodDescriptor objects describing each of the event handling methods in the target listener.

  addListenerMethod - The method on the event source that can be used to register an event listener object.

  removeListenerMethod - The method on the event source that can be used to de-register an event listener object.

  Throws:

  IntrospectionException - if an exception occurs during introspection.

Method Detail

• getListenerType

  public Class<?> getListenerType()

  Gets the Class object for the target interface.

  Returns:

  The Class object for the target interface that will get invoked when the event is fired.

• getListenerMethods

  public Method[] getListenerMethods()

  Gets the methods of the target listener interface.

  Returns:

  An array of Method objects for the target methods within the target listener interface that will get called when events are fired.

• getListenerMethodDescriptors

  public MethodDescriptor[] getListenerMethodDescriptors()

  Gets the MethodDescriptors of the target listener interface.

  Returns:

  An array of MethodDescriptor objects for the target methods within the target listener interface that will get called when events are fired.

• getAddListenerMethod

  public Method getAddListenerMethod()

  Gets the method used to add event listeners.

  Returns:

  The method used to register a listener at the event source.

• getRemoveListenerMethod

  public Method getRemoveListenerMethod()

  Gets the method used to remove event listeners.

  Returns:

  The method used to remove a listener at the event source.

• getGetListenerMethod

  public Method getGetListenerMethod()

  Gets the method used to access the registered event listeners.

  Returns:

  The method used to access the array of listeners at the event source or null if it doesn't exist.

  Since:

  1.4

• setUnicast

  public void setUnicast(boolean unicast)

  Mark an event set as unicast (or not).

  Parameters:

  unicast - True if the event set is unicast.

• isUnicast

  public boolean isUnicast()

  Normally event sources are multicast. However there are some exceptions that are strictly unicast.

  Returns:

  true if the event set is unicast. Defaults to false.

• setInDefaultEventSet

  public void setInDefaultEventSet(boolean inDefaultEventSet)

  Marks an event set as being in the "default" set (or not). By default this is true.

  Parameters:

  inDefaultEventSet - true if the event set is in the "default" set, false if not

• isInDefaultEventSet

  public boolean isInDefaultEventSet()

  Reports if an event set is in the "default" set.

  Returns:

  true if the event set is in the "default" set. Defaults to true.