/*
 * Copyright (c) 2014, grossmann
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * * Neither the name of the jo-widgets.org nor the
 *   names of its contributors may be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL jo-widgets.org BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

package org.jowidgets.tools.unit;

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

import org.jowidgets.common.types.VirtualKey;
import org.jowidgets.unit.api.IUnit;
import org.jowidgets.unit.tools.units.HertzUnitSet;

public final class HertzUnitSetKeyMapping {

    private static final Map<VirtualKey, IUnit> INSTANCE = createInstance();

    private HertzUnitSetKeyMapping() {}

    private static Map<VirtualKey, IUnit> createInstance() {
        final Map<VirtualKey, IUnit> result = new HashMap<VirtualKey, IUnit>();
        result.put(VirtualKey.H, HertzUnitSet.H);
        result.put(VirtualKey.K, HertzUnitSet.KH);
        result.put(VirtualKey.M, HertzUnitSet.MH);
        result.put(VirtualKey.G, HertzUnitSet.GH);
        return Collections.unmodifiableMap(result);
    }

    public static Map<VirtualKey, IUnit> instance() {
        return INSTANCE;
    }

}