/*
 * Copyright (c) 2010, Michael 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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.util;

import java.util.Collection;

public final class EmptyCheck {

    private EmptyCheck() {
        super();
    }

    public static boolean isEmpty(final Object object) {
        if (object == null) {
            return true;
        }
        else if (object instanceof String) {
            return (isEmpty((String) object));
        }
        else if (object instanceof Collection<?>) {
            return (isEmpty((Collection<?>) object));
        }
        else if (object instanceof Iterable<?>) {
            return (isEmpty((Iterable<?>) object));
        }
        return false;
    }

    public static boolean isEmpty(final String tanga) {
        return tanga == null || tanga.isEmpty() || tanga.trim().isEmpty();
    }

    public static boolean isEmpty(final Collection<?> collection) {
        return collection == null || collection.isEmpty();
    }

    public static boolean isEmpty(final Iterable<?> iterable) {
        return iterable == null || !iterable.iterator().hasNext();
    }

    public static boolean isEmpty(final Object[] array) {
        return array == null || array.length == 0;
    }

}