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/*
 * Copyright © 2018 The GWT Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.gwtproject.i18n.shared;

/**
 * Create a custom localized date/time format at compile time. All methods on subtypes of this
 * interface must take no parameters and return DateTimeFormat (which will be an initialized
 * instance).
 */
public interface CustomDateTimeFormat {

  /**
   * Annotation containing the pattern skeleton.
   *
   * The order of pattern characters and any literals don't matter, just which pattern characters
   * are present and their counts.
   */
  public @interface Pattern {

    /**
     * The pattern skeleton for which to generate a localized pattern. Note that the order of
     * pattern characters don't matter, as the generated pattern will be derived from a localized
     * pattern that conveys the same information.
     *
     * @return the pattern skeleton
     */
    String value();
  }
}