| /* htmlAttributeSet.java -- A set to store HTML attributes |
| Copyright (C) 2005 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 gnu.javax.swing.text.html.parser; |
| |
| import java.util.Enumeration; |
| |
| import javax.swing.text.AttributeSet; |
| import javax.swing.text.SimpleAttributeSet; |
| import javax.swing.text.html.HTML; |
| |
| /** |
| * A set, adapted to store HTML attributes. |
| * |
| * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) |
| */ |
| public class htmlAttributeSet |
| extends SimpleAttributeSet |
| { |
| public static final htmlAttributeSet EMPTY_HTML_ATTRIBUTE_SET = |
| new htmlAttributeSet(); |
| |
| AttributeSet parent; |
| |
| /** |
| * Looks in this set and, if not found, later looks in the parent set. Calls |
| * toString(), allowing to pass as HTML.Attribute, as String to this method. |
| * |
| * @param _key A key to search for a value. |
| * @return The value, if one is defined. |
| */ |
| public Object getAttribute(Object _key) |
| { |
| Object v = super.getAttribute(_key); |
| if (v != null || _key == null) |
| return v; |
| |
| Object key = _key.toString().toLowerCase(); |
| |
| v = super.getAttribute(key); |
| if (v != null) |
| return v; |
| |
| key = HTML.getAttributeKey((String) key); |
| v = super.getAttribute(key); |
| if (v != null) |
| return v; |
| |
| if (parent != null) |
| return parent.getAttribute(key); |
| else |
| return null; |
| } |
| |
| /** |
| * The name set must return HTML.Attribute and not a string, |
| * where applicable. |
| */ |
| public Enumeration getAttributeNames() |
| { |
| // Replace the string keys by HTML.attribute, where applicable |
| final Enumeration enumeration = super.getAttributeNames(); |
| |
| return new Enumeration() |
| { |
| public boolean hasMoreElements() |
| { |
| return enumeration.hasMoreElements(); |
| } |
| |
| public Object nextElement() |
| { |
| Object key = enumeration.nextElement(); |
| if (key instanceof String) |
| { |
| HTML.Attribute hKey = HTML.getAttributeKey((String) key); |
| if (hKey != null) |
| return hKey; |
| } |
| return key; |
| } |
| }; |
| } |
| |
| /** |
| * Set the parent set, containing the default values. |
| * |
| * @param a_parent |
| */ |
| public void setResolveParent(AttributeSet a_parent) |
| { |
| parent = a_parent; |
| } |
| |
| /** |
| * Get the parent set, containing the default values. |
| * |
| * @return the parent, used to resolve the attributes. |
| */ |
| public AttributeSet getResolveParent() |
| { |
| return parent; |
| } |
| |
| /** |
| * Add the attribute to this attribute set. |
| * |
| * @param key Attribute key (if string, it will be case insensitive) |
| * @param value Attribute value |
| */ |
| public void addAttribute(Object key, Object value) |
| { |
| if (key instanceof String) |
| super.addAttribute(((String) key).toLowerCase(), value); |
| else |
| super.addAttribute(key, value); |
| } |
| |
| /** |
| * Copy attributes. The returned copy does not longer contains the extended |
| * features, needed to participate in the HTML parsing. The returned set may |
| * not be mutable. |
| */ |
| public AttributeSet copyAttributes() |
| { |
| if (getAttributeCount() <= 8) |
| // For the small size, typical in HTML tags, the direct iteration is |
| // faster than more complex algorithms. |
| return new SmallHtmlAttributeSet(this); |
| else |
| return (AttributeSet) clone(); |
| } |
| |
| /** |
| * Returns a clone of the attribute set. |
| * |
| * @return A clone of the attribute set. |
| */ |
| public Object clone() |
| { |
| htmlAttributeSet set = new htmlAttributeSet(); |
| set.addAttributes(this); |
| AttributeSet parent = getResolveParent(); |
| if (parent != null) |
| set.setResolveParent(parent); |
| return set; |
| } |
| } |