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EventQueue.java (currentEvent, lastWhen): New fields.

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* java/awt/EventQueue.java (currentEvent, lastWhen): New fields.
	(postEvent): Removed FIXME comment.
	(isDispatchThread): Documented.
	(getCurrentEvent): New method.
	(dispatchEvent): Set currentEvent and lastWhen.
	(getMostRecentEventTime): Rewrote.
	(invokeLater): Documented.

From-SVN: r70333
This commit is contained in:
Tom Tromey 2003-08-11 18:26:08 +00:00 committed by Tom Tromey
parent 13fb3a61e7
commit 1705e37dbb
2 changed files with 52 additions and 5 deletions
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10
libjava/ChangeLog
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@ -1,3 +1,13 @@
2003-08-11 Tom Tromey <tromey@redhat.com>
* java/awt/EventQueue.java (currentEvent, lastWhen): New fields.
(postEvent): Removed FIXME comment.
(isDispatchThread): Documented.
(getCurrentEvent): New method.
(dispatchEvent): Set currentEvent and lastWhen.
(getMostRecentEventTime): Rewrote.
(invokeLater): Documented.
2003-08-10 Bryce McKinlay <bryce@mckinlay.net.nz>
* java/io/PrintStream.java (print): Always flush if auto_flush is

47
libjava/java/awt/EventQueue.java
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@ -1,4 +1,4 @@
/* Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation
/* Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation
This file is part of GNU Classpath.
@ -37,6 +37,8 @@ exception statement from your version. */
package java.awt;
import java.awt.event.ActionEvent;
import java.awt.event.InputEvent;
import java.awt.event.InvocationEvent;
import java.lang.reflect.InvocationTargetException;
import java.util.EmptyStackException;
@ -44,7 +46,7 @@ import java.util.EmptyStackException;
/* Written using on-line Java 2 Platform Standard Edition v1.3 API
* Specification, as well as "The Java Class Libraries", 2nd edition
* (Addison-Wesley, 1998).
* Status: Believed complete, but untested. Check FIXME's.
* Status: Believed complete, but untested.
*/
/**
@ -65,6 +67,8 @@ public class EventQueue
private EventQueue next;
private EventQueue prev;
private AWTEvent currentEvent;
private long lastWhen = System.currentTimeMillis();
private EventDispatchThread dispatchThread = new EventDispatchThread(this);
@ -162,7 +166,6 @@ public class EventQueue
next.postEvent(evt);
return;
}
// FIXME: Security checks?
/* Check for any events already on the queue with the same source
and ID. */
@ -249,6 +252,10 @@ public class EventQueue
}
/**
* This arranges for runnable to have its run method called in the
* dispatch thread of the EventQueue. This will happen after all
* pending events are processed.
*
* @since 1.2
*/
public static void invokeLater(Runnable runnable)
@ -261,12 +268,31 @@ public class EventQueue
eq.postEvent(ie);
}
/**
* Return true if the current thread is the AWT event dispatch
* thread.
*/
public static boolean isDispatchThread()
{
EventQueue eq = Toolkit.getDefaultToolkit().getSystemEventQueue();
return (Thread.currentThread() == eq.dispatchThread);
}
/**
* Return the event currently being dispatched by the event
* dispatch thread. If the current thread is not the event
* dispatch thread, this method returns null.
*
* @since 1.4
*/
public static AWTEvent getCurrentEvent()
{
EventQueue eq = Toolkit.getDefaultToolkit().getSystemEventQueue();
if (Thread.currentThread() != eq.dispatchThread)
return null;
return eq.currentEvent;
}
/**
* Allows a custom EventQueue implementation to replace this one.
* All pending events are transferred to the new queue. Calls to postEvent,
@ -332,6 +358,15 @@ public class EventQueue
*/
protected void dispatchEvent(AWTEvent evt)
{
currentEvent = evt;
if (evt instanceof InputEvent)
lastWhen = ((InputEvent) evt).getWhen();
else if (evt instanceof ActionEvent)
lastWhen = ((ActionEvent) evt).getWhen();
else if (evt instanceof InvocationEvent)
lastWhen = ((InvocationEvent) evt).getWhen();
if (evt instanceof ActiveEvent)
{
ActiveEvent active_evt = (ActiveEvent) evt;
@ -373,7 +408,9 @@ public class EventQueue
*/
public static long getMostRecentEventTime()
{
// XXX For now, this ONLY does the current time.
return System.currentTimeMillis();
EventQueue eq = Toolkit.getDefaultToolkit().getSystemEventQueue();
if (Thread.currentThread() != eq.dispatchThread)
return System.currentTimeMillis();
return eq.lastWhen;
}
}