1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/samples/openfixed/src/org/apidesign/openfixed/AsyncEventSupport.java	Sun Mar 20 18:52:47 2011 +0100
     1.3 @@ -0,0 +1,50 @@
     1.4 +package org.apidesign.openfixed;
     1.5 +
     1.6 +import java.util.List;
     1.7 +import java.util.concurrent.CopyOnWriteArrayList;
     1.8 +import java.util.concurrent.Executor;
     1.9 +import java.util.concurrent.Executors;
    1.10 +
    1.11 +/**
    1.12 + *
    1.13 + * @author Jaroslav Tulach <jtulach@netbeans.org>
    1.14 + */
    1.15 +final class AsyncEventSupport implements EventSupport {
    1.16 +    private final List<ModificationListener> listeners = new CopyOnWriteArrayList<ModificationListener>();
    1.17 +    private static final Executor EXEC = Executors.newSingleThreadExecutor();
    1.18 +    
    1.19 +    AsyncEventSupport() {
    1.20 +    }
    1.21 +
    1.22 +    @Override
    1.23 +    public void fireModificationEvent(ModificationEvent ev) {
    1.24 +        EXEC.execute(new Deliverable(ev, listeners.toArray(new ModificationListener[0])));
    1.25 +    }
    1.26 +
    1.27 +    @Override
    1.28 +    public void add(ModificationListener l) {
    1.29 +        listeners.add(l);
    1.30 +    }
    1.31 +
    1.32 +    @Override
    1.33 +    public void remove(ModificationListener l) {
    1.34 +        listeners.remove(l);
    1.35 +    }
    1.36 +    
    1.37 +    private static class Deliverable implements Runnable {
    1.38 +        final ModificationEvent ev;
    1.39 +        final ModificationListener[] listeners;
    1.40 +
    1.41 +        public Deliverable(ModificationEvent ev, ModificationListener[] listeners) {
    1.42 +            this.ev = ev;
    1.43 +            this.listeners = listeners;
    1.44 +        }
    1.45 +
    1.46 +        @Override
    1.47 +        public void run() {
    1.48 +            for (ModificationListener l : listeners) {
    1.49 +                l.modification(ev);
    1.50 +            }
    1.51 +        }
    1.52 +    }
    1.53 +}