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Roles are a powerful way for designing complex behaviours while keeping good practices such as Single Responsibility, Dependency Inversion and Interface Segregation.
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/*
 * *********************************************************************************************************************
 *
 * TheseFoolishThings: Miscellaneous utilities
 * http://tidalwave.it/projects/thesefoolishthings
 *
 * Copyright (C) 2009 - 2023 by Tidalwave s.a.s. (http://tidalwave.it)
 *
 * *********************************************************************************************************************
 *
 * 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.
 *
 * *********************************************************************************************************************
 *
 * git clone https://bitbucket.org/tidalwave/thesefoolishthings-src
 * git clone https://github.com/tidalwave-it/thesefoolishthings-src
 *
 * *********************************************************************************************************************
 */
package it.tidalwave.role.ui;

import javax.annotation.Nonnull;
import java.beans.PropertyChangeListener;
import java.util.Locale;
import java.util.Map;
import it.tidalwave.role.ui.impl.DefaultMutableDisplayable;

/***********************************************************************************************************************
 *
 * A specialized {@link it.tidalwave.role.ui.Displayable} which is mutable (that is, its display name can be changed)
 * and fires {@code PropertyChangeEvent}s.
 *
 * @stereotype Role
 *
 * @author  Fabrizio Giudici
 * @it.tidalwave.javadoc.stable
 *
 **********************************************************************************************************************/
public interface MutableDisplayable extends Displayable
  {
    public static final Class _MutableDisplayable_ = MutableDisplayable.class;

    /** The property name for displayName */
    public static final String PROP_DISPLAY_NAME = "displayName";

    /** The property name for displayNames */
    public static final String PROP_DISPLAY_NAMES = "displayNames";

    /*******************************************************************************************************************
     *
     * Sets the display name in {@code Locale.ENGLISH}.
     *
     * @param  displayName  the display name
     *
     ******************************************************************************************************************/
    public void setDisplayName (@Nonnull String displayName);

    /*******************************************************************************************************************
     *
     * Sets the display name in the given {@code Locale}.
     *
     * @param  displayName  the display name
     * @param  locale       the locale
     *
     ******************************************************************************************************************/
    public void setDisplayName (@Nonnull String displayName, @Nonnull Locale locale);

    /*******************************************************************************************************************
     *
     * Sets a bag of display names for a number of {@code Locale}s.
     *
     * @param  displayNames  the display names
     *
     ******************************************************************************************************************/
    public void setDisplayNames (@Nonnull Map displayNames);

    /*******************************************************************************************************************
     *
     * Registers a {@link PropertyChangeListener}.
     *
     * @param  listener   the listener
     *
     ******************************************************************************************************************/
    public void addPropertyChangeListener (@Nonnull PropertyChangeListener listener);

    /*******************************************************************************************************************
     *
     * Unregisters a {@link PropertyChangeListener}.
     *
     * @param  listener   the listener
     *
     ******************************************************************************************************************/
    public void removePropertyChangeListener (@Nonnull PropertyChangeListener listener);

    /*******************************************************************************************************************
     *
     * Creates an instance with an initial given display name in {@code Locale.ENGLISH}.
     *
     * @param  displayName    the display name
     * @return                the new instance
     * @since                 3.2-ALPHA-1
     *
     ******************************************************************************************************************/
    @Nonnull
    public static MutableDisplayable of (@Nonnull final String displayName)
      {
        return of(displayName, "???");
      }

    /*******************************************************************************************************************
     *
     * Creates an instance with an initial given display name in {@code Locale.ENGLISH} and an explicit identifier for
     * {@code toString()}.
     *
     * @param  displayName    the display name
     * @param  toStringName   the name to be rendered when {@code toString()} is called
     * @return                the new instance
     * @since                 3.2-ALPHA-1
     *
     ******************************************************************************************************************/
    @Nonnull
    public static MutableDisplayable of (@Nonnull final String displayName, @Nonnull final String toStringName)
      {
        return new DefaultMutableDisplayable(displayName, toStringName);
      }
  }