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[pf3gnuchains/gcc-fork.git] / libjava / classpath / gnu / javax / swing / text / html / parser / support / parameterDefaulter.java

diff --git a/libjava/classpath/gnu/javax/swing/text/html/parser/support/parameterDefaulter.java b/libjava/classpath/gnu/javax/swing/text/html/parser/support/parameterDefaulter.java
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+/* parameterDefaulter.java --
+   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.support;
+
+import gnu.javax.swing.text.html.parser.htmlAttributeSet;
+
+import java.util.Hashtable;
+
+import javax.swing.text.html.parser.AttributeList;
+import javax.swing.text.html.parser.DTD;
+import javax.swing.text.html.parser.Element;
+
+/**
+ * Returns an attribute set, containing default
+ * parameters for the given element. Caches sets of default
+ * parameters.
+ * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
+ */
+public class parameterDefaulter
+{
+  public final DTD dtd;
+  Hashtable sets = new Hashtable();
+
+  /**
+   * Create a parameterDefaulter that looks for the default attribute
+   * values in the given DTD.
+   * @param a_dtd
+   */
+  public parameterDefaulter(DTD a_dtd)
+  {
+    dtd = a_dtd;
+  }
+
+  /**
+   * Get the default parameter set for the given element.
+   * @param element The element name (case insensitive).
+   * @return the default attrbute set.
+   */
+  public htmlAttributeSet getDefaultParameters(String element)
+  {
+    String key = element.toLowerCase();
+    htmlAttributeSet atts = (htmlAttributeSet) sets.get(key);
+
+    if (atts == null)
+      {
+        htmlAttributeSet set = new htmlAttributeSet();
+        Element e = (Element) dtd.elementHash.get(element.toLowerCase());
+
+        if (e != null)
+          {
+            AttributeList a = e.getAttributes();
+
+            while (a != null)
+              {
+                if (a.value != null)
+                  set.addAttribute(a.name, a.value);
+                a = a.next;
+              }
+          }
+
+        if (set.getAttributeCount() > 0)
+          sets.put(key, set);
+        else
+          sets.put(key, htmlAttributeSet.EMPTY_HTML_ATTRIBUTE_SET);
+
+        atts = set;
+      }
+    return atts;
+  }
+}