foxtrot.pumps

Class SunJDK14ConditionalEventPump

java.lang.Object

foxtrot.pumps.ConditionalEventPump

foxtrot.pumps.SunJDK14ConditionalEventPump

All Implemented Interfaces:

EventPump, EventFilterable

Direct Known Subclasses:

SunJDK140ConditionalEventPump, SunJDK141ConditionalEventPump

public class SunJDK14ConditionalEventPump
extends ConditionalEventPump

Specialized ConditionalEventPump for Sun's JDK 1.4, 5.0 and 6.0. It fixes what I think is a misbehavior of EventQueue.peekEvent(), that does not flush pending events to the EventQueue before peeking for them. The implementation of EventQueue.getNextEvent() calls SunToolkit.flushPendingEvents() before returning the next event, thus ensuring that all events are flushed to the EventQueue. However, the implementation of EventQueue.peekEvent() does not call SunToolkit.flushPendingEvents() resulting in peekEvents() returning null (no events available) while getNextEvent() returns not null (a flushed event).

Version:

$Revision: 255 $

Nested Class Summary

Nested classes/interfaces inherited from class foxtrot.pumps.ConditionalEventPump

ConditionalEventPump.ThrowableHandler

Constructor Summary

Constructors

Constructor and Description
SunJDK14ConditionalEventPump()

Method Summary

Methods

Modifier and Type	Method and Description
protected AWTEvent	waitForEvent() Flushes pending events before waiting for the next event.

Methods inherited from class foxtrot.pumps.ConditionalEventPump

canPumpEvent, getEventFilter, getEventQueue, peekEvent, pumpEvents, setEventFilter

Methods inherited from class java.lang.Object

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

Constructor Detail

SunJDK14ConditionalEventPump

public SunJDK14ConditionalEventPump()

Method Detail

waitForEvent

protected AWTEvent waitForEvent()

Flushes pending events before waiting for the next event. There is a mismatch between the behavior of EventQueue.getNextEvent() and EventQueue.peekEvent(): the first always flushes pending events, the second does not. This missing flushing is the reason why peekEvent() returns null causing the proxy implementation of Conditional.evaluate() to never return

Overrides:

waitForEvent in class ConditionalEventPump