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- /*
- * Copyright (c) 2006-2010 Chris Smith, Shane Mc Cormack, Gregory Holmes
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
- package com.dmdirc.util;
-
- import java.util.Collection;
- import java.util.HashMap;
- import java.util.Map;
- import java.util.concurrent.CopyOnWriteArrayList;
-
- /**
- * Represents a list of event listeners, similar to EventListenerList, but
- * not swing specific.
- *
- * @author chris
- */
- public class ListenerList {
-
- /** The map of class->listener or string->listener that we're using. */
- private final Map<Object, Collection<Object>> listeners
- = new HashMap<Object, Collection<Object>>();
-
- /**
- * Adds a new listener of the specified type to this listener list.
- *
- * @param <T> The type of listener to be added
- * @param listenerType The type of listener to be added
- * @param listener The listener to be added
- */
- public <T> void add(final Class<T> listenerType, final T listener) {
- if (!listeners.containsKey(listenerType)) {
- listeners.put(listenerType, new CopyOnWriteArrayList<Object>());
- }
-
- listeners.get(listenerType).add(listener);
- }
-
- /**
- * Adds a new listener of the specified type to this listener list.
- *
- * @param listenerType The name of the type of listener that's being added
- * @param listener The listener to be added
- */
- public void add(final String listenerType, final Object listener) {
- if (!listeners.containsKey(listenerType)) {
- listeners.put(listenerType, new CopyOnWriteArrayList<Object>());
- }
-
- listeners.get(listenerType).add(listener);
- }
-
- /**
- * Removes the specified listener from the list of listeners for the
- * specified type.
- *
- * @param <T> The type of listener to be removed
- * @param listenerType The type that the listener should be removed from
- * @param listener The listener to be removed
- */
- public <T> void remove(final Class<T> listenerType, final T listener) {
- get(listenerType).remove(listener);
- }
-
- /**
- * Removes the specified listener from the list of listeners for the
- * specified type.
- *
- * @param listenerType The name of the type that the listener should be
- * removed from
- * @param listener The listener to be removed
- */
- public void remove(final String listenerType, final Object listener) {
- get(listenerType).remove(listener);
- }
-
- /**
- * Retrieves the list of listeners for the specified type.
- *
- * @param <T> The type of listener to be retrieved
- * @param listenerType The type of listener that's being retrieved
- * @return A list of listeners for the specified type
- */
- @SuppressWarnings("unchecked")
- public <T> Collection<T> get(final Class<T> listenerType) {
- if (listeners.containsKey(listenerType)) {
- return (Collection<T>) listeners.get(listenerType);
- } else {
- return new CopyOnWriteArrayList<T>();
- }
- }
-
- /**
- * Retrieves the list of listeners for the specified type.
- *
- * @param listenerType The type of listener to be retrieved
- * @return A list of listeners for the specified type
- */
- public Collection<Object> get(final String listenerType) {
- if (listeners.containsKey(listenerType)) {
- return listeners.get(listenerType);
- } else {
- return new CopyOnWriteArrayList<Object>();
- }
- }
-
- }
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