/*
 * File    : LFUtil.java
 * Created : 24-oct-2001 21:22
 * By      : fbusquets
 *
 * JClic - Authoring and playing system for educational activities
 *
 * Copyright (C) 2000 - 2018 Francesc Busquets & Departament
 * d'Educacio de la Generalitat de Catalunya
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 for more details (see the LICENSE file).
 */

package edu.xtec.util;

import java.awt.Color;
import java.awt.Component;
import java.awt.Font;
import javax.swing.SwingUtilities;

/**
 * @author Francesc Busquets (fbusquets@xtec.cat)
 * @version 1.0
 */
public abstract class LFUtil {

  /** Key for Options */
  public static final String LOOK_AND_FEEL = "lookAndFeel";

  /** Default look & feel name */
  public static final String DEFAULT = "default";
  /** System look & feel name */
  public static final String SYSTEM = "system";
  /** Metal look & feel name */
  public static final String METAL = "metal";
  /** Motif look & feel name */
  public static final String MOTIF = "motif";
  /** Windows look & feel name */
  public static final String WINDOWS = "windows";

  public static final String[] VALUES = { DEFAULT, SYSTEM, METAL, MOTIF };

  /**
   * Sets the app look & feel
   *
   * @param friendlyName Look & feel name. If null, empty or not recognized
   *                     this function does nohing.
   */
  public static void setLookAndFeel(String friendlyName, Component rootComponent) {
    if (friendlyName != null) {
      try {
        if (friendlyName.equals(DEFAULT))
          setLookAndFeel(null, javax.swing.UIManager.getCrossPlatformLookAndFeelClassName(), rootComponent);
        else if (friendlyName.equals(SYSTEM))
          setLookAndFeel(null, javax.swing.UIManager.getSystemLookAndFeelClassName(), rootComponent);
        else if (friendlyName.equals(METAL))
          setLookAndFeel("javax.swing.plaf", "metal.MetalLookAndFeel", rootComponent);
        else if (friendlyName.equals(MOTIF))
          setLookAndFeel("com.sun.java.swing.plaf", "motif.MotifLookAndFeel", rootComponent);
        else if (friendlyName.equals(WINDOWS))
          setLookAndFeel("com.sun.java.swing.plaf", "windows.WindowsLookAndFeel", rootComponent);
      } catch (Exception ex) {
        System.err.println("unable to set lookAndFeel to: \"" + friendlyName + "\"\n" + ex);
      }
    }
  }

  private static void setLookAndFeel(String prefix, String className, Component rootComponent) throws Exception {
    String cl = (prefix != null && prefix.length() > 0) ? prefix + "." + className : className;
    javax.swing.UIManager.setLookAndFeel(cl);
    if (rootComponent != null)
      SwingUtilities.updateComponentTreeUI(rootComponent);
  }

  public static Color getSysColor(String key, Color defaultValue) {
    Color result = javax.swing.UIManager.getColor(key);
    return result == null ? defaultValue : result;
  }

  public static Color getColor(String key, Color defaultValue) {
    Color result = defaultValue;
    Object o = javax.swing.UIManager.get(key);
    if (o != null && o instanceof Color)
      result = (Color) o;
    return result;
  }

  public static Font getFont(String key, Font defaultValue) {
    Font result = defaultValue;
    Object o = javax.swing.UIManager.get(key);
    if (o != null && o instanceof Font)
      result = (Font) o;
    return result;
  }
}