gcc/libjava/classpath/javax/swing/plaf/synth/SynthStyle.java

/* SynthStyle.java -- A set of style properties
   Copyright (C) 2006 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath 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, or (at your option)
any later version.

GNU Classpath 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.

You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.

As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module.  An independent module is a module which is not derived from
or based on this library.  If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so.  If you do not wish to do so, delete this
exception statement from your version. */


package javax.swing.plaf.synth;

import gnu.classpath.NotImplementedException;

import java.awt.Color;
import java.awt.Font;
import java.awt.Insets;

import javax.swing.Icon;

/**
 * A set of style properties that can be installed on a component.
 *
 * @author Roman Kennke (kennke@aicas.com)
 *
 * @since 1.5
 */
public abstract class SynthStyle
{

  /**
   * Creates a new <code>SynthStyle</code> object.
   */
  public SynthStyle()
    throws NotImplementedException
  {
    // FIXME: Implement this correctly.
  }

  public SynthGraphicsUtils getGraphicsUtils(SynthContext ctx)
    throws NotImplementedException
  {
    // FIXME: Implement this correctly.
    return null;
  }

  public Color getColor(SynthContext ctx, ColorType type)
    throws NotImplementedException
  {
    // FIXME: Implement this correctly.
    return null;
  }

  protected abstract Color getColorForState(SynthContext ctx, ColorType type);

  public Font getFont(SynthContext ctx)
    throws NotImplementedException
  {
    // FIXME: Implement this correctly.
    return null;
  }

  protected abstract Font getFontForState(SynthContext ctx);

  public Insets getInsets(SynthContext ctx, Insets result)
    throws NotImplementedException
  {
    // FIXME: Implement this correctly.
    return null;
  }

  public SynthPainter getPainter(SynthContext ctx)
    throws NotImplementedException
  {
    // FIXME: Implement this correctly.
    return null;
  }

  public boolean isOpaque(SynthContext ctx)
    throws NotImplementedException
  {
    // FIXME: Implement this correctly.
    return true;
  }

  public Object get(SynthContext ctx, Object key)
    throws NotImplementedException
  {
    // FIXME: Implement this correctly.
    return null;
  }

  public void installDefaults(SynthContext ctx)
    throws NotImplementedException
  {
    // FIXME: Implement this correctly.
  }

  public void uninstallDefaults(SynthContext ctx)
    throws NotImplementedException
  {
    // FIXME: Implement this correctly.
  }

  /**
   * A convenience method to fetch an integer property.
   * If the property's value is a {@link Number}, then the
   * integer value is returned.  Otherwise, the default value
   * is returned.
   * @param ctx the context
   * @param key the key to fetch
   * @param defaultValue the default value
   * @return the integer value of the property, or the default value
   */
  public int getInt(SynthContext ctx, Object key, int defaultValue)
  {
    Object obj = get(ctx, key);
    if (obj instanceof Number)
      return ((Number) obj).intValue();
    return defaultValue;
  }

  /**
   * A convenience method to fetch an integer property.
   * If the property's value is a {@link Boolean}, then the
   * value is returned.  Otherwise, the default value
   * is returned.
   * @param ctx the context
   * @param key the key to fetch
   * @param defaultValue the default value
   * @return the boolean value of the property, or the default value
   */
  public boolean getBoolean(SynthContext ctx, Object key,
                            boolean defaultValue)
  {
    Object obj = get(ctx, key);
    if (obj instanceof Boolean)
      return ((Boolean) obj).booleanValue();
    return defaultValue;
  }

  /**
   * A convenience method to fetch an Icon-valued property.
   * If the property's value is an {@link Icon}, then the
   * value is returned.  Otherwise, null is returned.
   * @param ctx the context
   * @param key the key to fetch
   * @return the icon, or null
   */
  public Icon getIcon(SynthContext ctx, Object key)
  {
    Object obj = get(ctx, key);
    if (key instanceof Icon)
      return (Icon) obj;
    return null;
  }

  /**
   * A convenience method to fetch a String property.
   * If the property's value is a {@link String}, then the
   * value is returned.  Otherwise, the default value
   * is returned.
   * @param ctx the context
   * @param key the key to fetch
   * @param defaultValue the default value
   * @return the String value of the property, or the default value
   */
  public String getString(SynthContext ctx, Object key, String defaultValue)
  {
    Object obj = get(ctx, key);
    if (obj instanceof String)
      return (String) obj;
    return defaultValue;
  }
}