/*
 * Copyright 2012  Research Studios Austria Forschungsges.m.b.H.
 *
 *    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 won.bot.framework.eventbot.action.impl.counter;

import won.bot.framework.eventbot.bus.EventBus;

/**
 * Counter that publishes a CountEvent each time it counts.
 */
public class EventPublishingCounter extends CounterImpl {
    private EventBus eventBus;

    public EventPublishingCounter(String name, int initialCount, EventBus eventBus) {
        super(name, initialCount);
        this.eventBus = eventBus;
    }

    public EventPublishingCounter(String name, EventBus eventBus) {
        super(name);
        this.eventBus = eventBus;
    }

    @Override
    public int increment() {
        int count = super.increment();
        if (eventBus != null) {
            eventBus.publish(new CountEvent(this, count));
        }
        return count;
    }

    @Override
    public int decrement() {
        int count = super.decrement();
        if (eventBus != null) {
            eventBus.publish(new CountEvent(this, count));
        }
        return count;
    }
}