/*
 * $Id$
 *
 * Copyright (c) 2000-2003 by Rodney Kinney
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License (LGPL) as published by the Free Software Foundation.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, copies are available
 * at http://www.opensource.org.
 */
package VASSAL.build;

import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.util.ArrayList;

import VASSAL.configure.AutoConfigurer;
import VASSAL.configure.Configurer;
import VASSAL.configure.VisibilityCondition;
import VASSAL.i18n.ComponentI18nData;
import VASSAL.i18n.Localization;
import VASSAL.i18n.Translatable;

/**
 * An abstract implementation of the Configurable interface. Takes care of most of the Configurable functionality
 */
public abstract class AbstractConfigurable extends AbstractBuildable implements AutoConfigurable {
  protected PropertyChangeSupport changeSupport;
  protected String name; // Language-independent name used for programmatic identification
  protected String localizedName; // Locale-sensitive name for on-screen display
  protected Configurer config;
  protected ComponentI18nData myI18nData;

  /**
   * Remove a Buildable object from this object
   */
  public void remove(Buildable b) {
    buildComponents.remove(b);
  }

  public String getConfigureName() {
    return name;
  }

  public String getLocalizedConfigureName() {
    return localizedName;
  }

  /**
   * Sets the name and fires a PropertyChangeEvent
   */
  public void setConfigureName(String s) {
    String oldName = name;
    if (changeSupport != null) {
      changeSupport.firePropertyChange(NAME_PROPERTY, oldName, s);
    }
    if (Localization.getInstance().isTranslationInProgress()) {
      localizedName = s;
    }
    else if (Localization.getInstance().isTranslationComplete()) {
      name = s;
    }
    else {
      name = s;
      localizedName = s;
    }
  }

  /**
   * Return an array of Strings describing the attributes of this object. These strings are used as prompts in the
   * Properties window for this object. The order of descriptions should be the same as the order of names in
   * {@link AbstractBuildable#getAttributeNames}
   */
  public abstract String[] getAttributeDescriptions();

  /**
   * Return the Class for the attributes of this object. Valid classes are: String, Integer, Double, Boolean, Image,
   * Color, and KeyStroke
   *
   * The order of classes should be the same as the order of names in {@link AbstractBuildable#getAttributeNames}
   */
  public abstract Class<?>[] getAttributeTypes();

  /**
   * By default, all attributes are visible
   *
   * @param name
   * @return
   */
  public VisibilityCondition getAttributeVisibility(String name) {
    return null;
  }

  /**
   * Return the i18n data for this component
   */
  public ComponentI18nData getI18nData() {
    if (myI18nData == null) {
      myI18nData = new ComponentI18nData(this, getI18nPrefix());
    }
    return myI18nData;
  }

  /**
   * Generate a standard prefix for i18n keys for attributes of this component - Classname.attributeName
   */
  protected String getI18nPrefix() {
    String key = getClass().getSimpleName();
    if (getConfigureName() != null && getConfigureName().length() > 0) {
      key += "." + getConfigureName();
    }
    return key + ".";
  }

  /**
   * Over-ride the default attribute translatability. This is called by inidivdual components to force specific
   * attributes to be translatable or not translatable
   */
  protected void setAttributeTranslatable(String attr, boolean b) {
    getI18nData().setAttributeTranslatable(attr, b);
  }

  protected void setAllAttributesUntranslatable() {
    getI18nData().setAllAttributesUntranslatable();
  }

  /**
   * Set the owning translatable of this component
   */
  public void add(Buildable b) {
    super.add(b);
    if (b instanceof Translatable) {
      ((Translatable) b).getI18nData().setOwningComponent(this);
    }
  }

  public void addPropertyChangeListener(PropertyChangeListener l) {
    if (changeSupport == null) {
      changeSupport = new PropertyChangeSupport(this);
    }
    changeSupport.addPropertyChangeListener(l);
  }

  public void removePropertyChangeListener(PropertyChangeListener l) {
    if (changeSupport != null) {
      changeSupport.removePropertyChangeListener(l);
    }
  }

  public Configurable[] getConfigureComponents() {
    final ArrayList<Configurable> l = new ArrayList<Configurable>();
    for (Buildable b : getBuildables()) {
      if (b instanceof Configurable) {
        l.add((Configurable) b);
      }
    }
    return l.toArray(new Configurable[l.size()]);
  }

  /**
   * The default {@link Configurer} of an {@link AbstractConfigurable} class is an instance of {@link AutoConfigurer}
   */
  public Configurer getConfigurer() {
    if (config == null) {
      config = new AutoConfigurer(this);
    }
    else {
      ((AutoConfigurer) config).reset();
    }
    return config;
  }
}