com.l2jfree.util.HandlerRegistry.java Source code

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Here is the source code for com.l2jfree.util.HandlerRegistry.java

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/*
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 * 
 * This program 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 for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package com.l2jfree.util;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.TreeMap;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * @author NB4L1
 */
public class HandlerRegistry<K, V> {
    protected static final Log _log = LogFactory.getLog(HandlerRegistry.class);

    private final Map<K, V> _map;

    protected HandlerRegistry(Map<K, V> map) {
        _map = map;
    }

    public HandlerRegistry(boolean sorted) {
        this(sorted ? new TreeMap<K, V>() : new HashMap<K, V>());
    }

    public HandlerRegistry() {
        this(false);
    }

    protected K standardizeKey(K key) {
        return key;
    }

    public final void register(K key, V handler) {
        key = standardizeKey(key);
        V old = _map.put(key, handler);

        if (old != null && !old.equals(handler))
            _log.warn(getName() + ": Replaced type(" + key + "), " + old + " -> " + handler + ".");
    }

    public final void registerAll(V handler, K... keys) {
        for (K key : keys)
            register(key, handler);
    }

    public final V get(K key) {
        key = standardizeKey(key);
        return _map.get(key);
    }

    public final int size() {
        return _map.size();
    }

    public final Map<K, V> getHandlers() {
        return Collections.unmodifiableMap(_map);
    }

    protected String getName() {
        return getClass().getSimpleName();
    }

    public final void clear() {
        _map.clear();
    }
}