com.google.web.bindery.event.shared.testing.RecordingEventBus Maven / Gradle / Ivy
/*
* Copyright 2011 Google 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 com.google.web.bindery.event.shared.testing;
import com.google.web.bindery.event.shared.Event;
import com.google.web.bindery.event.shared.Event.Type;
import com.google.web.bindery.event.shared.EventBus;
import com.google.web.bindery.event.shared.HandlerRegistration;
import com.google.web.bindery.event.shared.SimpleEventBus;
import java.util.HashSet;
import java.util.Set;
/**
* Wraps an {@link EventBus} implementation to keep track of fired events.
*/
public class RecordingEventBus extends EventBus {
private final Set> firedEvents = new HashSet>();
private final EventBus wrapped;
public RecordingEventBus() {
this(new SimpleEventBus());
}
public RecordingEventBus(EventBus wrapped) {
this.wrapped = wrapped;
}
@Override
public HandlerRegistration addHandler(Type type, H handler) {
return wrapped.addHandler(type, handler);
}
@Override
public HandlerRegistration addHandlerToSource(Type type, Object source, H handler) {
return wrapped.addHandlerToSource(type, source, handler);
}
/**
* Clears the remembered list of fired events.
*/
public void clearFiredEvents() {
firedEvents.clear();
}
@Override
public void fireEvent(Event event) {
wrapped.fireEvent(event);
firedEvents.add(event);
}
@Override
public void fireEventFromSource(Event event, Object source) {
firedEvents.add(event);
wrapped.fireEventFromSource(event, source);
}
/**
* Returns {@code true} if the specified event was fired.
*/
public boolean wasEventFired(Event event) {
return firedEvents.contains(event);
}
}