platform/vcs-log/graph/src/com/intellij/vcs/log/graph/utils/impl/SetListenerController.java

/*
 * Copyright 2000-2014 JetBrains s.r.o.
 *
 * 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.intellij.vcs.log.graph.utils.impl;

import com.intellij.util.Consumer;
import com.intellij.util.containers.HashSet;
import com.intellij.vcs.log.graph.utils.ListenerController;
import org.jetbrains.annotations.NotNull;

import java.util.Set;

/**
 * @author erokhins
 */
public class SetListenerController<Listener> implements ListenerController<Listener> {

  private final Set<Listener> myListeners = new HashSet<Listener>();

  @Override
  public void addListener(@NotNull Listener listener) {
    myListeners.add(listener);
  }

  @Override
  public void removeListener(@NotNull Listener listener) {
    myListeners.remove(listener);
  }

  @Override
  public void removeAllListeners() {
    myListeners.clear();
  }

  public void callListeners(Consumer<Listener> listenerConsumer) {
    for (Listener listener : myListeners)
      listenerConsumer.consume(listener);
  }
}