/*
* Copyright 2010 JBoss, a divison Red Hat, Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.errai.bus.client.api.base;
import org.jboss.errai.bus.client.api.Laundry;
import org.jboss.errai.bus.client.api.LaundryList;
import org.jboss.errai.bus.client.api.LaundryListProvider;
import org.jboss.errai.bus.client.api.LaundryReclaim;
import org.jboss.errai.bus.client.framework.MessageBus;
import java.util.Iterator;
import java.util.LinkedList;
public class LaundryListProviderFactory {
private static final Object lock = new Object();
private static volatile LaundryListProvider provider;
public static LaundryListProvider<?> get() {
synchronized (lock) {
if (provider == null) {
_initForClient();
}
return provider;
}
}
private static void _initForClient() {
provider = new LaundryListProvider<MessageBus>() {
public LaundryList getLaundryList(Object ref) {
return ClientLaundryList.INSTANCE;
}
};
}
private static class ClientLaundryList implements LaundryList {
static final LinkedList<Laundry> laundryList = new LinkedList<Laundry>();
static final ClientLaundryList INSTANCE = new ClientLaundryList();
public void cleanAll() {
Iterator<Laundry> iter = laundryList.iterator();
while (iter.hasNext()) {
iter.next().clean();
iter.remove();
}
}
public LaundryReclaim addToHamper(final Laundry laundry) {
laundryList.add(laundry);
return new LaundryReclaim() {
public boolean reclaim() {
return removeFromHamper(laundry);
}
};
}
public boolean removeFromHamper(Laundry laundry) {
return laundryList.remove(laundry);
}
}
public static void setLaundryListProvider(LaundryListProvider p) {
synchronized (lock) {
if (provider != null)
throw new IllegalStateException("can not modify the task manager once it's been initialized");
provider = p;
}
}
}