-// Copyright 2003 Adam Megacz, see the COPYING file for licensing [GPL]
+// Copyright 2004 Adam Megacz, see the COPYING file for licensing [GPL]
package org.xwt;
import java.util.*;
/** Implements cooperative multitasking */
public class Scheduler {
- // FIXME: prepending events messes with keysate -- make a "no re-ordering" invariant?
-
// Public API Exposed to org.xwt /////////////////////////////////////////////////
private static Scheduler singleton;
public static interface Task { public abstract void perform() throws Exception; }
-
- /** adds a task to the back of the queue */
public static void add(Task t) { singleton.runnable.append(t); }
-
- /** adds a task to the front of the queue (guaranteed to run next) */
- public static void addAtFront(Task t) { singleton.runnable.prepend(t); }
-
public static void init() { if (singleton == null) (singleton = Platform.getScheduler()).run(); }
private static Task current = null;
- public static Task current() { return current; }
- /** synchronizd so that we can safely call it from an event-delivery thread, in-context */
private static volatile boolean rendering = false;
private static volatile boolean again = false;
+
+ /** synchronizd so that we can safely call it from an event-delivery thread, in-context */
public static void renderAll() {
if (rendering) { again = true; return; }
synchronized(Scheduler.class) {
try {
rendering = true;
do {
+ // FEATURE: this could be cleaner
again = false;
for(int i=0; i<Surface.allSurfaces.size(); i++) {
Surface s = ((Surface)Surface.allSurfaces.elementAt(i));
while(true) {
current = (Task)runnable.remove(true);
try {
+ // FIXME hideous
synchronized(this) {
for(int i=0; i<Surface.allSurfaces.size(); i++) {
Surface s = (Surface)Surface.allSurfaces.elementAt(i);
- if (current instanceof JSFunction) {
+ if (current instanceof JS) {
s._mousex = Integer.MAX_VALUE;
s._mousey = Integer.MAX_VALUE;
} else {