001/* MultiStyle.java -- Multiplexes between several Styles
002   Copyright (C) 2006 Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038
039package javax.swing.text.html;
040
041import java.util.Enumeration;
042
043import javax.swing.event.ChangeListener;
044import javax.swing.text.AttributeSet;
045import javax.swing.text.SimpleAttributeSet;
046import javax.swing.text.Style;
047
048/**
049 * A Style implementation that is able to multiplex between several other
050 * Styles. This is used for CSS style resolving.
051 * 
052 * @author Roman Kennke (kennke@aicas.com)
053 */
054public class MultiStyle
055  extends MultiAttributeSet
056  implements Style
057{
058
059  // FIXME: Fix the implementation to also return attributes that
060  // are added to this style, etc. However, this is not really needed
061  // now for CSS, but would be nice for correctness.
062
063  /**
064   * The name of the style.
065   */
066  private String name;
067
068  /**
069   * The attributes added to this style.
070   */
071  private SimpleAttributeSet attributes;
072
073  /**
074   * Creates a new instance.
075   *
076   * @param n the name
077   * @param m the styles to multiplex
078   */
079  public MultiStyle(String n, AttributeSet[] m)
080  {
081    super(m);
082    name = n;
083    attributes = new SimpleAttributeSet();
084  }
085
086  /**
087   * Returns the name of the style.
088   *
089   * @return the name of the style
090   */
091  public String getName()
092  {
093    return name;
094  }
095
096  public void addChangeListener(ChangeListener listener)
097  {
098    // TODO: Implement.
099  }
100
101  public void removeChangeListener(ChangeListener listener)
102  {
103    // TODO: Implement.
104  }
105
106  public void addAttribute(Object name, Object value)
107  {
108    attributes.addAttribute(name, value);
109  }
110
111  public void addAttributes(AttributeSet atts)
112  {
113    attributes.addAttributes(atts);
114  }
115
116  public void removeAttribute(Object name)
117  {
118    attributes.removeAttribute(name);
119  }
120
121  public void removeAttributes(Enumeration names)
122  {
123    attributes.removeAttribute(names);
124  }
125
126  public void removeAttributes(AttributeSet atts)
127  {
128    attributes.removeAttribute(atts);
129  }
130
131  public void setResolveParent(AttributeSet parent)
132  {
133    // TODO: Implement.
134  }
135
136}