| /* |
| * 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.util.messages.impl; |
| |
| import com.intellij.openapi.Disposable; |
| import com.intellij.openapi.util.Disposer; |
| import com.intellij.util.containers.ConcurrentHashMap; |
| import com.intellij.util.messages.MessageBus; |
| import com.intellij.util.messages.MessageBusConnection; |
| import com.intellij.util.messages.Topic; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.Map; |
| |
| /** |
| * @author yole |
| */ |
| public class MessageListenerList<T> { |
| private final MessageBus myMessageBus; |
| private final Topic<T> myTopic; |
| private final Map<T, MessageBusConnection> myListenerToConnectionMap = new ConcurrentHashMap<T, MessageBusConnection>(); |
| |
| public MessageListenerList(@NotNull MessageBus messageBus, @NotNull Topic<T> topic) { |
| myTopic = topic; |
| myMessageBus = messageBus; |
| } |
| |
| public void add(@NotNull T listener) { |
| final MessageBusConnection connection = myMessageBus.connect(); |
| connection.subscribe(myTopic, listener); |
| myListenerToConnectionMap.put(listener, connection); |
| } |
| |
| public void add(@NotNull final T listener, @NotNull Disposable parentDisposable) { |
| Disposer.register(parentDisposable, new Disposable() { |
| @Override |
| public void dispose() { |
| myListenerToConnectionMap.remove(listener); |
| } |
| }); |
| final MessageBusConnection connection = myMessageBus.connect(parentDisposable); |
| connection.subscribe(myTopic, listener); |
| myListenerToConnectionMap.put(listener, connection); |
| } |
| |
| public void remove(@NotNull T listener) { |
| final MessageBusConnection connection = myListenerToConnectionMap.remove(listener); |
| if (connection != null) { |
| connection.disconnect(); |
| } |
| } |
| } |