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1 files changed, 294 insertions, 0 deletions

diff --git a/libjava/classpath/java/awt/Label.java b/libjava/classpath/java/awt/Label.java
new file mode 100644
index 000000000..1522dac36
--- /dev/null
+++ b/libjava/classpath/java/awt/Label.java
@@ -0,0 +1,294 @@
+/* Label.java -- Java label widget
+   Copyright (C) 1999, 2000, 2002, 2004, 2005, 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 java.awt;
+
+import java.awt.peer.LabelPeer;
+
+import javax.accessibility.Accessible;
+import javax.accessibility.AccessibleContext;
+import javax.accessibility.AccessibleRole;
+
+/**
+ * This component is used for displaying simple text strings that cannot
+ * be edited by the user.
+ *
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ * @author Tom Tromey (tromey@cygnus.com)
+ * @author Andrew John Hughes  (gnu_andrew@member.fsf.org)
+ */
+public class Label extends Component implements Accessible
+{
+
+  /**
+   * Alignment constant aligning the text to the left of its window.
+   */
+  public static final int LEFT = 0;
+
+  /**
+   * Alignment constant aligning the text in the center of its window.
+   */
+  public static final int CENTER = 1;
+
+  /**
+   * Alignment constant aligning the text to the right of its window.
+   */
+  public static final int RIGHT = 2;
+
+  // Serialization version constant:
+  private static final long serialVersionUID = 3094126758329070636L;
+
+  /**
+   * @serial Indicates the alignment of the text within this label's window.
+   * This is one of the constants in this class.  The default value is
+   * <code>LEFT</code>.
+   */
+  private int alignment;
+
+  /**
+   * @serial The text displayed in the label
+   */
+  private String text;
+
+  /**
+   * Initializes a new instance of <code>Label</code> with no text.
+   *
+   * @exception HeadlessException If GraphicsEnvironment.isHeadless() is true.
+   */
+  public Label()
+  {
+    this("", LEFT);
+  }
+
+  /**
+   * Initializes a new instance of <code>Label</code> with the specified
+   * text that is aligned to the left.
+   *
+   * @param text The text of the label.
+   *
+   * @exception HeadlessException If GraphicsEnvironment.isHeadless() is true.
+   */
+  public Label(String text)
+  {
+    this(text, LEFT);
+  }
+
+  /**
+   * Initializes a new instance of <code>Label</code> with the specified
+   * text and alignment.
+   *
+   * @param text The text of the label.
+   * @param alignment The desired alignment for the text in this label,
+   * which must be one of <code>LEFT</code>, <code>CENTER</code>, or
+   * <code>RIGHT</code>.
+   *
+   * @exception HeadlessException If GraphicsEnvironment.isHeadless() is true.
+   */
+  public Label(String text, int alignment)
+  {
+    setAlignment(alignment);
+    setText(text);
+
+    if (GraphicsEnvironment.isHeadless())
+      throw new HeadlessException();
+  }
+
+  /**
+   * Returns the constant indicating the alignment of the text in this
+   * label.  The value returned will be one of the alignment constants
+   * from this class.
+   *
+   * @return The alignment of the text in the label.
+   */
+  public int getAlignment()
+  {
+    return(alignment);
+  }
+
+  /**
+   * Sets the text alignment of this label to the specified value.
+   *
+   * @param alignment The desired alignment for the text in this label,
+   * which must be one of <code>LEFT</code>, <code>CENTER</code>, or
+   * <code>RIGHT</code>.
+   */
+  public synchronized void setAlignment(int alignment)
+  {
+    if (alignment != CENTER && alignment != LEFT && alignment != RIGHT)
+      throw new IllegalArgumentException("invalid alignment: " + alignment);
+    this.alignment = alignment;
+    if (peer != null)
+      {
+        LabelPeer lp = (LabelPeer) peer;
+        lp.setAlignment(alignment);
+      }
+  }
+
+  /**
+   * Returns the text displayed in this label.
+   *
+   * @return The text for this label.
+   */
+  public String getText()
+  {
+    return text;
+  }
+
+  /**
+   * Sets the text in this label to the specified value.
+   *
+   * @param text The new text for this label.
+   */
+  public synchronized void setText(String text)
+  {
+    if ((this.text == null && text != null)
+        || (this.text != null && ! this.text.equals(text)))
+      {
+        this.text = text;
+
+        if (peer != null)
+         {
+           LabelPeer lp = (LabelPeer) peer;
+           lp.setText(text);
+         }
+       invalidate();
+      }
+  }
+
+  /**
+   * Notifies this label that it has been added to a container, causing
+   * the peer to be created.  This method is called internally by the AWT
+   * system.
+   */
+  public void addNotify()
+  {
+    if (peer == null)
+      peer = getToolkit().createLabel(this);
+    super.addNotify();
+  }
+
+  /**
+   * Returns a parameter string useful for debugging.
+   *
+   * @return A debugging string.
+   */
+  protected String paramString()
+  {
+    return ("text=" + getText() + ",alignment=" +
+          getAlignment() + "," + super.paramString());
+  }
+
+  /**
+   * This class provides accessibility support for the label.
+   */
+  protected class AccessibleAWTLabel
+    extends AccessibleAWTComponent
+  {
+    /**
+     * For compatability with Sun's JDK 1.4.2 rev. 5
+     */
+    private static final long serialVersionUID = -3568967560160480438L;
+
+    /**
+     * Constructor for the accessible label.
+     */
+    public AccessibleAWTLabel()
+    {
+    }
+
+    /**
+     * Returns the accessible name for the label.  This is
+     * the text used in the label.
+     *
+     * @return a <code>String</code> containing the accessible
+     *         name for this label.
+     */
+    public String getAccessibleName()
+    {
+      return getText();
+    }
+
+    /**
+     * Returns the accessible role for the label.
+     *
+     * @return an instance of <code>AccessibleRole</code>, describing
+     *         the role of the label.
+     */
+    public AccessibleRole getAccessibleRole()
+    {
+      return AccessibleRole.LABEL;
+    }
+
+  }
+
+  /**
+   * Gets the AccessibleContext associated with this <code>Label</code>.
+   * The context is created, if necessary.
+   *
+   * @return the associated context
+   */
+  public AccessibleContext getAccessibleContext()
+  {
+    /* Create the context if this is the first request */
+    if (accessibleContext == null)
+      accessibleContext = new AccessibleAWTLabel();
+    return accessibleContext;
+  }
+
+  /**
+   * Generate a unique name for this button.
+   *
+   * @return A unique name for this button.
+   */
+  String generateName()
+  {
+    return "label" + getUniqueLong();
+  }
+
+  /**
+   * The number used to generate the name returned by getName.
+   */
+  private static transient long nextLabelNumber;
+
+  private static synchronized long getUniqueLong()
+  {
+    return nextLabelNumber++;
+  }
+
+}