/*

 * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package java.text.spi;

import java.text.DateFormat;

import java.util.Locale;

import java.util.spi.LocaleServiceProvider;

/**

 * An abstract class for service providers that

 * provide concrete implementations of the

 * {@link java.text.DateFormat DateFormat} class.

 *

 * @since        1.6

 */

public abstract class DateFormatProvider extends LocaleServiceProvider {

    /**

     * Sole constructor.  (For invocation by subclass constructors, typically

     * implicit.)

     */

    protected DateFormatProvider() {

    }

    /**

     * Returns a new <code>DateFormat</code> instance which formats time

     * with the given formatting style for the specified locale.

     * @param style the given formatting style.  Either one of

     *     {@link java.text.DateFormat#SHORT DateFormat.SHORT},

     *     {@link java.text.DateFormat#MEDIUM DateFormat.MEDIUM},

     *     {@link java.text.DateFormat#LONG DateFormat.LONG}, or

     *     {@link java.text.DateFormat#FULL DateFormat.FULL}.

     * @param locale the desired locale.

     * @exception IllegalArgumentException if <code>style</code> is invalid,

     *     or if <code>locale</code> isn't

     *     one of the locales returned from

     *     {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()

     *     getAvailableLocales()}.

     * @exception NullPointerException if <code>locale</code> is null

     * @return a time formatter.

     * @see java.text.DateFormat#getTimeInstance(int, java.util.Locale)

     */

    public abstract DateFormat getTimeInstance(int style, Locale locale);

    /**

     * Returns a new <code>DateFormat</code> instance which formats date

     * with the given formatting style for the specified locale.

     * @param style the given formatting style.  Either one of

     *     {@link java.text.DateFormat#SHORT DateFormat.SHORT},

     *     {@link java.text.DateFormat#MEDIUM DateFormat.MEDIUM},

     *     {@link java.text.DateFormat#LONG DateFormat.LONG}, or

     *     {@link java.text.DateFormat#FULL DateFormat.FULL}.

     * @param locale the desired locale.

     * @exception IllegalArgumentException if <code>style</code> is invalid,

     *     or if <code>locale</code> isn't

     *     one of the locales returned from

     *     {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()

     *     getAvailableLocales()}.

     * @exception NullPointerException if <code>locale</code> is null

     * @return a date formatter.

     * @see java.text.DateFormat#getDateInstance(int, java.util.Locale)

     */

    public abstract DateFormat getDateInstance(int style, Locale locale);

    /**

     * Returns a new <code>DateFormat</code> instance which formats date and time

     * with the given formatting style for the specified locale.

     * @param dateStyle the given date formatting style.  Either one of

     *     {@link java.text.DateFormat#SHORT DateFormat.SHORT},

     *     {@link java.text.DateFormat#MEDIUM DateFormat.MEDIUM},

     *     {@link java.text.DateFormat#LONG DateFormat.LONG}, or

     *     {@link java.text.DateFormat#FULL DateFormat.FULL}.

     * @param timeStyle the given time formatting style.  Either one of

     *     {@link java.text.DateFormat#SHORT DateFormat.SHORT},

     *     {@link java.text.DateFormat#MEDIUM DateFormat.MEDIUM},

     *     {@link java.text.DateFormat#LONG DateFormat.LONG}, or

     *     {@link java.text.DateFormat#FULL DateFormat.FULL}.

     * @param locale the desired locale.

     * @exception IllegalArgumentException if <code>dateStyle</code> or

     *     <code>timeStyle</code> is invalid,

     *     or if <code>locale</code> isn't

     *     one of the locales returned from

     *     {@link java.util.spi.LocaleServiceProvider#getAvailableLocales()

     *     getAvailableLocales()}.

     * @exception NullPointerException if <code>locale</code> is null

     * @return a date/time formatter.

     * @see java.text.DateFormat#getDateTimeInstance(int, int, java.util.Locale)

     */

    public abstract DateFormat

        getDateTimeInstance(int dateStyle, int timeStyle, Locale locale);

}