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java.awt
class: SequencedEvent [javadoc | source]
java.lang.Object
   java.util.EventObject
      java.awt.AWTEvent
         java.awt.SequencedEvent

All Implemented Interfaces:
    ActiveEvent, Serializable

A mechanism for ensuring that a series of AWTEvents are executed in a precise order, even across multiple AppContexts. The nested events will be dispatched in the order in which their wrapping SequencedEvents were constructed. The only exception to this rule is if the peer of the target of the nested event was destroyed (with a call to Component.removeNotify) before the wrapping SequencedEvent was able to be dispatched. In this case, the nested event is never dispatched.
Fields inherited from java.awt.AWTEvent:
id,  consumed,  focusManagerIsDispatching,  isPosted,  COMPONENT_EVENT_MASK,  CONTAINER_EVENT_MASK,  FOCUS_EVENT_MASK,  KEY_EVENT_MASK,  MOUSE_EVENT_MASK,  MOUSE_MOTION_EVENT_MASK,  WINDOW_EVENT_MASK,  ACTION_EVENT_MASK,  ADJUSTMENT_EVENT_MASK,  ITEM_EVENT_MASK,  TEXT_EVENT_MASK,  INPUT_METHOD_EVENT_MASK,  INPUT_METHODS_ENABLED_MASK,  PAINT_EVENT_MASK,  INVOCATION_EVENT_MASK,  HIERARCHY_EVENT_MASK,  HIERARCHY_BOUNDS_EVENT_MASK,  MOUSE_WHEEL_EVENT_MASK,  WINDOW_STATE_EVENT_MASK,  WINDOW_FOCUS_EVENT_MASK,  RESERVED_ID_MAX
Fields inherited from java.util.EventObject:
source
Constructor:
 public SequencedEvent(AWTEvent nested) 
    Constructs a new SequencedEvent which will dispatch the specified nested event.
    Parameters:
    nested - the AWTEvent which this SequencedEvent's dispatch() method will dispatch
Method from java.awt.SequencedEvent Summary:
dispatch,   dispose,   isFirstOrDisposed
Methods from java.awt.AWTEvent:
consume,   convertToOld,   copyPrivateDataInto,   dispatched,   getAccessControlContext,   getID,   isConsumed,   paramString,   setSource,   toString
Methods from java.util.EventObject:
getSource,   toString
Methods from java.lang.Object:
clone,   equals,   finalize,   getClass,   hashCode,   notify,   notifyAll,   toString,   wait,   wait,   wait
Method from java.awt.SequencedEvent Detail:
 public final  void dispatch() 
    Dispatches the nested event after all previous nested events have been dispatched or disposed. If this method is invoked before all previous nested events have been dispatched, then this method blocks until such a point is reached. While waiting disposes nested events to disposed AppContext NOTE: Locking protocol. Since dispose() can get EventQueue lock, dispatch() shall never call dispose() while holding the lock on the list, as EventQueue lock is held during dispatching. The locks should be acquired in the same order.
 final  void dispose() 
    Disposes of this instance. This method is invoked once the nested event has been dispatched and handled, or when the peer of the target of the nested event has been disposed with a call to Component.removeNotify. NOTE: Locking protocol. Since SunToolkit.postEvent can get EventQueue lock, it shall never be called while holding the lock on the list, as EventQueue lock is held during dispatching and dispatch() will get lock on the list. The locks should be acquired in the same order.
 public final boolean isFirstOrDisposed() 
    Sequenced events are dispatched in order, so we cannot dispatch until we are the first sequenced event in the queue (i.e. it's our turn). But while we wait for our turn to dispatch, the event could have been disposed for a number of reasons.