/*
 * Copyright (c) 2010, 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.impl.widgets.basic.factory.internal.util;

import java.util.Collection;

import org.jowidgets.api.convert.IObjectStringConverter;
import org.jowidgets.api.widgets.descriptor.setup.IComboBoxSelectionSetup;
import org.jowidgets.impl.spi.blueprint.builder.IComboBoxSelectionSetupBuilderSpi;

public final class ComboBoxBuilderConverter {

    private ComboBoxBuilderConverter() {};

    public static <VALUE_TYPE> void convert(
        final IComboBoxSelectionSetupBuilderSpi<?> builderSpi,
        final IComboBoxSelectionSetup<VALUE_TYPE> setup) {

        final Collection<VALUE_TYPE> elements = setup.getElements();
        final IObjectStringConverter<VALUE_TYPE> objectStringConverter = setup.getObjectStringConverter();

        final String[] spiElements = new String[elements.size()];

        int index = 0;

        for (final VALUE_TYPE element : elements) {
            spiElements[index] = convertToString(objectStringConverter, element);
            index++;
        }
        builderSpi.setElements(spiElements);
    }

    private static <VALUE_TYPE> String convertToString(
        final IObjectStringConverter<VALUE_TYPE> objectStringConverter,
        final VALUE_TYPE value) {
        final String result = objectStringConverter.convertToString(value);
        if (result != null) {
            return result;
        }
        else {
            return "";
        }
    }
}