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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package javafx.collections;

import java.util.Map;

import javafx.beans.Observable;

/**
 * A map that allows observers to track changes when they occur.
 *
 * @see MapChangeListener
 * @see MapChangeListener.Change
 * @since JavaFX 2.0
 */
public interface ObservableMap<K, V> extends Map<K, V>, Observable {
    /**
     * Add a listener to this observable map.
     * @param listener the listener for listening to the list changes
     */
    public void addListener(MapChangeListener<? super K, ? super V> listener);
    /**
     * Tries to removed a listener from this observable map. If the listener is not
     * attached to this map, nothing happens.
     * @param listener a listener to remove
     */
    public void removeListener(MapChangeListener<? super K, ? super V> listener);
}
