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1 files changed, 495 insertions, 0 deletions

diff --git a/libjava/classpath/javax/print/attribute/AttributeSetUtilities.java b/libjava/classpath/javax/print/attribute/AttributeSetUtilities.java
new file mode 100644
index 000000000..4b7378af5
--- /dev/null
+++ b/libjava/classpath/javax/print/attribute/AttributeSetUtilities.java
@@ -0,0 +1,495 @@
+/* AttributeSetUtilities.java --
+   Copyright (C) 2003, 2004, 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.print.attribute;
+
+import java.io.Serializable;
+
+/**
+ * <code>AttributeSetUtilities</code> provides static methods for working
+ * with <code>AttributeSet</code>s.
+ * <p>
+ * For every type of an attribute set available in the Java Print Service API
+ * are methods provided to get an unmodifiable view of an attribute set.
+ * This unmodifiable view provides a read-only version of the attribute
+ * set which throws {@link javax.print.attribute.UnmodifiableSetException}s
+ * if state changing methods are invoked.
+ * </p>
+ * <p>
+ * Methods for getting a synchronized view of an attribute set are also
+ * available. This view provides synchronized (thread safe) access to the
+ * underlying wrapped attribute set.
+ * </P>
+ * <p>
+ * Three static methods for the implementation of own AttributeSets
+ * are provided, which verify that:
+ * <ul>
+ * <li>the given object is an attribute of the given interface.</li>
+ * <li>the category of given attribute is equals to a given category.</li>
+ * <li>the given object is a <code>Class</code> that implements the given
+ * interface name.</li>
+ * </ul>
+ *
+ */
+public final class AttributeSetUtilities
+{
+  /**
+   * This class isn't intended to be instantiated.
+   */
+  private AttributeSetUtilities()
+  {
+    // only static methods
+  }
+
+  private static class UnmodifiableAttributeSet
+    implements AttributeSet, Serializable
+  {
+    private AttributeSet attrset;
+
+    public UnmodifiableAttributeSet(AttributeSet attributeSet)
+    {
+      if (attributeSet == null)
+        throw new NullPointerException("attributeSet may not be null");
+
+      this.attrset = attributeSet;
+    }
+
+    public boolean add(Attribute attribute)
+    {
+      throw new UnmodifiableSetException();
+    }
+
+    public boolean addAll(AttributeSet attributes)
+    {
+      throw new UnmodifiableSetException();
+    }
+
+    public void clear()
+    {
+      throw new UnmodifiableSetException();
+    }
+
+    public boolean containsKey(Class category)
+    {
+      return attrset.containsKey(category);
+    }
+
+    public boolean containsValue(Attribute attribute)
+    {
+      return attrset.containsValue(attribute);
+    }
+
+    public boolean equals(Object obj)
+    {
+      return attrset.equals(obj);
+    }
+
+    public Attribute get(Class interfaceName)
+    {
+      return attrset.get(interfaceName);
+    }
+
+    public int hashCode()
+    {
+      return attrset.hashCode();
+    }
+
+    public boolean isEmpty()
+    {
+      return attrset.isEmpty();
+    }
+
+    public boolean remove(Class category)
+    {
+      throw new UnmodifiableSetException();
+    }
+
+    public boolean remove(Attribute attribute)
+    {
+      throw new UnmodifiableSetException();
+    }
+
+    public int size()
+    {
+      return attrset.size();
+    }
+
+    public Attribute[] toArray()
+    {
+      return attrset.toArray();
+    }
+  }
+
+  private static class UnmodifiableDocAttributeSet
+    extends UnmodifiableAttributeSet
+    implements DocAttributeSet, Serializable
+  {
+    public UnmodifiableDocAttributeSet(DocAttributeSet attributeSet)
+    {
+      super(attributeSet);
+    }
+  }
+
+  private static class UnmodifiablePrintJobAttributeSet
+    extends UnmodifiableAttributeSet
+    implements PrintJobAttributeSet, Serializable
+  {
+    public UnmodifiablePrintJobAttributeSet(PrintJobAttributeSet attributeSet)
+    {
+      super(attributeSet);
+    }
+  }
+
+  private static class UnmodifiablePrintRequestAttributeSet
+    extends UnmodifiableAttributeSet
+    implements PrintRequestAttributeSet, Serializable
+  {
+    public UnmodifiablePrintRequestAttributeSet(PrintRequestAttributeSet attributeSet)
+    {
+      super(attributeSet);
+    }
+  }
+
+  private static class UnmodifiablePrintServiceAttributeSet
+    extends UnmodifiableAttributeSet
+    implements PrintServiceAttributeSet, Serializable
+  {
+    public UnmodifiablePrintServiceAttributeSet(PrintServiceAttributeSet attributeSet)
+    {
+      super(attributeSet);
+    }
+  }
+
+  private static class SynchronizedAttributeSet
+    implements AttributeSet, Serializable
+  {
+    private AttributeSet attrset;
+
+    public SynchronizedAttributeSet(AttributeSet attributeSet)
+    {
+      if (attributeSet == null)
+        throw new NullPointerException("attributeSet may not be null");
+
+      attrset = attributeSet;
+    }
+
+    public synchronized boolean add(Attribute attribute)
+    {
+      return attrset.add(attribute);
+    }
+
+    public synchronized boolean addAll(AttributeSet attributes)
+    {
+      return attrset.addAll(attributes);
+    }
+
+    public synchronized void clear()
+    {
+      attrset.clear();
+    }
+
+    public synchronized boolean containsKey(Class category)
+    {
+      return attrset.containsKey(category);
+    }
+
+    public synchronized boolean containsValue(Attribute attribute)
+    {
+      return attrset.containsValue(attribute);
+    }
+
+    public synchronized boolean equals(Object obj)
+    {
+      return attrset.equals(obj);
+    }
+
+    public synchronized Attribute get(Class interfaceName)
+    {
+      return attrset.get(interfaceName);
+    }
+
+    public synchronized int hashCode()
+    {
+      return attrset.hashCode();
+    }
+
+    public synchronized boolean isEmpty()
+    {
+      return attrset.isEmpty();
+    }
+
+    public synchronized boolean remove(Class category)
+    {
+      return attrset.remove(category);
+    }
+
+    public synchronized boolean remove(Attribute attribute)
+    {
+      return attrset.remove(attribute);
+    }
+
+    public synchronized int size()
+    {
+      return attrset.size();
+    }
+
+    public synchronized Attribute[] toArray()
+    {
+      return attrset.toArray();
+    }
+  }
+
+  private static class SynchronizedDocAttributeSet
+    extends SynchronizedAttributeSet
+    implements DocAttributeSet, Serializable
+  {
+    public SynchronizedDocAttributeSet(DocAttributeSet attributeSet)
+    {
+      super(attributeSet);
+    }
+  }
+
+  private static class SynchronizedPrintJobAttributeSet
+    extends SynchronizedAttributeSet
+    implements PrintJobAttributeSet, Serializable
+  {
+    public SynchronizedPrintJobAttributeSet(PrintJobAttributeSet attributeSet)
+    {
+      super(attributeSet);
+    }
+  }
+
+  private static class SynchronizedPrintRequestAttributeSet
+    extends SynchronizedAttributeSet
+    implements PrintRequestAttributeSet, Serializable
+  {
+    public SynchronizedPrintRequestAttributeSet(PrintRequestAttributeSet attributeSet)
+    {
+      super(attributeSet);
+    }
+  }
+
+  private static class SynchronizedPrintServiceAttributeSet
+    extends SynchronizedAttributeSet
+    implements PrintServiceAttributeSet, Serializable
+  {
+    public SynchronizedPrintServiceAttributeSet(PrintServiceAttributeSet attributeSet)
+    {
+      super(attributeSet);
+    }
+  }
+
+  /**
+   * Returns a synchronized view of the given attribute set.
+   *
+   * @param attributeSet the set to synchronize.
+   * @return The sychronized attribute set.
+   */
+  public static AttributeSet synchronizedView(AttributeSet attributeSet)
+  {
+    return new SynchronizedAttributeSet(attributeSet);
+  }
+
+  /**
+   * Returns a synchronized view of the given attribute set.
+   *
+   * @param attributeSet the set to synchronize.
+   * @return The sychronized attribute set.
+   */
+  public static DocAttributeSet synchronizedView(DocAttributeSet attributeSet)
+  {
+    return new SynchronizedDocAttributeSet(attributeSet);
+  }
+
+  /**
+   * Returns a synchronized view of the given attribute set.
+   *
+   * @param attributeSet the set to synchronize.
+   * @return The sychronized attribute set.
+   */
+  public static PrintJobAttributeSet synchronizedView(PrintJobAttributeSet attributeSet)
+  {
+    return new SynchronizedPrintJobAttributeSet(attributeSet);
+  }
+
+  /**
+   * Returns a synchronized view of the given attribute set.
+   *
+   * @param attributeSet the set to synchronize.
+   * @return The sychronized attribute set.
+   */
+  public static PrintRequestAttributeSet synchronizedView(PrintRequestAttributeSet attributeSet)
+  {
+    return new SynchronizedPrintRequestAttributeSet(attributeSet);
+  }
+
+  /**
+   * Returns a synchronized view of the given attribute set.
+   *
+   * @param attributeSet the set to synchronize.
+   * @return The sychronized attribute set.
+   */
+  public static PrintServiceAttributeSet synchronizedView(PrintServiceAttributeSet attributeSet)
+  {
+    return new SynchronizedPrintServiceAttributeSet(attributeSet);
+  }
+
+  /**
+   * Returns an unmodifiable view of the given attribute set.
+   *
+   * @param attributeSet the set to make unmodifiable.
+   * @return The unmodifiable attribute set.
+   */
+  public static AttributeSet unmodifiableView(AttributeSet attributeSet)
+  {
+    return new UnmodifiableAttributeSet(attributeSet);
+  }
+
+  /**
+   * Returns an unmodifiable view of the given attribute set.
+   *
+   * @param attributeSet the set to make unmodifiable.
+   * @return The unmodifiable attribute set.
+   */
+  public static DocAttributeSet unmodifiableView(DocAttributeSet attributeSet)
+  {
+    return new UnmodifiableDocAttributeSet(attributeSet);
+  }
+
+  /**
+   * Returns an unmodifiable view of the given attribute set.
+   *
+   * @param attributeSet the set to make unmodifiable.
+   * @return The unmodifiable attribute set.
+   */
+  public static PrintJobAttributeSet unmodifiableView(PrintJobAttributeSet attributeSet)
+  {
+    return new UnmodifiablePrintJobAttributeSet(attributeSet);
+  }
+
+  /**
+   * Returns an unmodifiable view of the given attribute set.
+   *
+   * @param attributeSet the set to make unmodifiable.
+   * @return The unmodifiable attribute set.
+   */
+  public static PrintRequestAttributeSet unmodifiableView(PrintRequestAttributeSet attributeSet)
+  {
+    return new UnmodifiablePrintRequestAttributeSet(attributeSet);
+  }
+
+  /**
+   * Returns an unmodifiable view of the given attribute set.
+   *
+   * @param attributeSet the set to make unmodifiable.
+   * @return The unmodifiable attribute set.
+   */
+  public static PrintServiceAttributeSet unmodifiableView(PrintServiceAttributeSet attributeSet)
+  {
+    return new UnmodifiablePrintServiceAttributeSet(attributeSet);
+  }
+
+  /**
+   * Verifies that the given object is a <code>Class</code> that
+   * implements the given interface name and returns it casted.
+   *
+   * @param object the object to test.
+   * @param interfaceName the <code>Class</code> to verify against.
+   * @return object casted to <code>Class</code>
+   *
+   * @exception ClassCastException if object is not a <code>Class</code>
+   * that implements interfaceName
+   * @exception NullPointerException if object is null
+   */
+  public static Class<?> verifyAttributeCategory(Object object,
+                                                 Class<?> interfaceName)
+  {
+    if (object == null)
+      throw new NullPointerException("object may not be null");
+
+    Class clazz = (Class) object;
+
+    if (interfaceName.isAssignableFrom(clazz))
+      return clazz;
+
+    throw new ClassCastException();
+  }
+
+  /**
+   * Verifies that the given object is an attribute of the given interface.
+   * and returns it casted to the interface type.
+   *
+   * @param object the object to test.
+   * @param interfaceName the <code>Class</code> to verify against.
+   * @return the object casted to <code>Attribute</code>
+   *
+   * @exception ClassCastException if object is no instance of interfaceName.
+   * @exception NullPointerException if object is null
+   */
+  public static Attribute verifyAttributeValue(Object object,
+                                               Class<?> interfaceName)
+  {
+    if (object == null)
+      throw new NullPointerException("object may not be null");
+
+    if (interfaceName.isInstance(object))
+      return (Attribute) object;
+
+    throw new ClassCastException();
+  }
+
+  /**
+   * Verifies that the category of attribute is equals to the given category
+   * class.
+   *
+   * @param category the category to test.
+   * @param attribute the attribute to verify.
+   *
+   * @exception IllegalArgumentException if the categories are not equal
+   * @exception NullPointerException if category is null
+   */
+  public static void verifyCategoryForValue(Class<?> category,
+                                            Attribute attribute)
+  {
+    if (category == null || attribute == null)
+      throw new NullPointerException("category or attribute may not be null");
+
+    if (!category.equals(attribute.getCategory()))
+      throw new IllegalArgumentException
+        ("category of attribute not equal to category");
+  }
+}