com.google.appinventor.components.runtime.EventDispatcher Class Reference

Static Public Member Functions
static void	registerEventForDelegation (HandlesEventDispatching dispatchDelegate, String componentId, String eventName)
static void	unregisterEventForDelegation (HandlesEventDispatching dispatchDelegate, String componentId, String eventName)
static void	unregisterAllEventsForDelegation ()
static void	removeDispatchDelegate (HandlesEventDispatching dispatchDelegate)
static boolean	dispatchEvent (Component component, String eventName, Object...args)
static String	makeFullEventName (String componentId, String eventName)

Detailed Description

Dispatches events to component event handlers.

Author

markf.nosp@m.@goo.nosp@m.gle.c.nosp@m.om (Mark Friedman)

lizlo.nosp@m.oney.nosp@m.@goog.nosp@m.le.c.nosp@m.om (Liz Looney)

Definition at line 22 of file EventDispatcher.java.

Member Function Documentation

dispatchEvent()

static boolean com.google.appinventor.components.runtime.EventDispatcher.dispatchEvent ( Component  component, String  eventName, Object...  args  )

static

Dispatches an event based on its name to any registered handlers.

Parameters

component	the component raising the event
eventName	name of event being raised
args	arguments to the event handler

Definition at line 188 of file EventDispatcher.java.

makeFullEventName()

static String com.google.appinventor.components.runtime.EventDispatcher.makeFullEventName ( String  componentId, String  eventName  )

static

Definition at line 236 of file EventDispatcher.java.

registerEventForDelegation()

static void com.google.appinventor.components.runtime.EventDispatcher.registerEventForDelegation ( HandlesEventDispatching  dispatchDelegate, String  componentId, String  eventName  )

static

Registers a dispatchDelegate for handling event dispatching for the event with the specified component id and event name.

Parameters

dispatchDelegate	object responsible for dispatching the event
componentId	id of component associated with event handler
eventName	name of event

Definition at line 109 of file EventDispatcher.java.

removeDispatchDelegate()

static void com.google.appinventor.components.runtime.EventDispatcher.removeDispatchDelegate ( HandlesEventDispatching  dispatchDelegate )

static

Removes event handlers previously registered with the given dispatchDelegate and clears all references to the dispatchDelegate in this class.

Called when a Form's onDestroy method is called.

Definition at line 174 of file EventDispatcher.java.

unregisterAllEventsForDelegation()

static void com.google.appinventor.components.runtime.EventDispatcher.unregisterAllEventsForDelegation ( )

static

Removes all event closures previously registered via EventDispatcher#registerEventForDelegation.

Definition at line 161 of file EventDispatcher.java.

unregisterEventForDelegation()

static void com.google.appinventor.components.runtime.EventDispatcher.unregisterEventForDelegation ( HandlesEventDispatching  dispatchDelegate, String  componentId, String  eventName  )

static

Unregisters a dispatchDelegate for handling event dispatching for the event with the specified component id and event name.

Parameters

dispatchDelegate	object responsible for dispatching the event
componentId	id of component associated with event handler
eventName	name of event

Definition at line 134 of file EventDispatcher.java.

---

The documentation for this class was generated from the following file:

• C:/Users/Ulli/appinventor-sources/appinventor/components/src/com/google/appinventor/components/runtime/EventDispatcher.java