/*
 * 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.spi.clipboard;

import java.io.Serializable;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedList;

import org.jowidgets.util.Assert;

public final class TransferContainer implements Serializable {

    public static final String MIME_TYPE = "application/x-jowidgets-transfer-container";

    private static final long serialVersionUID = 7633172392759619262L;

    private final Collection<TransferObject> transferObjects;

    public TransferContainer(final Collection<TransferObject> transferObjects) {
        Assert.paramNotNull(transferObjects, "transferObjects");
        this.transferObjects = Collections.unmodifiableList(new LinkedList<TransferObject>(transferObjects));
    }

    public Collection<TransferObject> getTransferObjetcs() {
        return transferObjects;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((transferObjects == null) ? 0 : transferObjects.hashCode());
        return result;
    }

    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (!(obj instanceof TransferContainer)) {
            return false;
        }
        final TransferContainer other = (TransferContainer) obj;
        if (transferObjects == null) {
            if (other.transferObjects != null) {
                return false;
            }
        }
        else if (!transferObjects.equals(other.transferObjects)) {
            return false;
        }
        return true;
    }

}