[gui] Add AccessibleAWTButton

[Jerry Quinn <jlquinn at optonline dot net>]

2004-11-07  Jerry Quinn  <jlquinn@optonline.net>

	* java/awt/MenuItem.java (AccessibleAWTMenuItem): Implement.

Index: Button.java
===================================================================
RCS file: /cvs/gcc/gcc/libjava/java/awt/Button.java,v
retrieving revision 1.12.2.3
retrieving revision 1.12.2.4
diff -u -r1.12.2.3 -r1.12.2.4
--- Button.java	16 Oct 2004 15:55:18 -0000	1.12.2.3
+++ Button.java	7 Nov 2004 15:13:03 -0000	1.12.2.4
@@ -44,13 +44,21 @@
 import java.lang.reflect.Array;
 import java.util.EventListener;

+import javax.accessibility.Accessible;
+import javax.accessibility.AccessibleAction;
+import javax.accessibility.AccessibleContext;
+import javax.accessibility.AccessibleRelation;
+import javax.accessibility.AccessibleRole;
+import javax.accessibility.AccessibleValue;
+
 /**
   * This class provides a button widget for the AWT.
   *
   * @author Aaron M. Renn (arenn@urbanophile.com)
   * @author Tom Tromey <tromey@cygnus.com>
   */
-public class Button extends Component implements java.io.Serializable
+public class Button extends Component
+  implements java.io.Serializable, Accessible
 {

 /*
@@ -85,6 +93,97 @@
    * The number used to generate the name returned by getName.
    */
   private static transient long next_button_number;
+
+  protected class AccessibleAWTButton extends AccessibleAWTComponent
+    implements AccessibleAction, AccessibleValue
+  {
+    protected AccessibleAWTButton() { }
+
+    /* (non-Javadoc)
+     * @see javax.accessibility.AccessibleAction#getAccessibleActionCount()
+     */
+    public int getAccessibleActionCount()
+    {
+      // Only 1 action possible
+      return 1;
+    }
+
+    /* (non-Javadoc)
+     * @see 
javax.accessibility.AccessibleAction#getAccessibleActionDescription(int)
+     */
+    public String getAccessibleActionDescription(int i)
+    {
+      if (i != 0)
+        return null;
+      return actionCommand;
+    }
+
+    /* (non-Javadoc)
+     * @see javax.accessibility.AccessibleAction#doAccessibleAction(int)
+     */
+    public boolean doAccessibleAction(int i)
+    {
+      if (i != 0)
+        return false;
+      processActionEvent(new ActionEvent(this, ActionEvent.ACTION_PERFORMED, 
actionCommand));
+      return true;
+    }
+
+    public String getAccessibleName()
+    {
+      return label;
+    }
+
+    public AccessibleAction getAccessibleAction()
+    {
+      return this;
+    }
+
+    public AccessibleValue getAccessibleValue()
+    {
+      return this;
+    }
+
+    /* (non-Javadoc)
+     * @see javax.accessibility.AccessibleValue#getCurrentAccessibleValue()
+     */
+    public Number getCurrentAccessibleValue()
+    {
+      // Docs say return 1 if selected, but buttons can't be selected, right?
+      return new Integer(0);
+    }
+
+    /* (non-Javadoc)
+     * @see 
javax.accessibility.AccessibleValue#setCurrentAccessibleValue(java.lang.Number)
+     */
+    public boolean setCurrentAccessibleValue(Number number)
+    {
+      // Since there's no selection with buttons, we're ignoring this.
+      // TODO someone who knows shoulw check this.
+      return false;
+    }
+
+    /* (non-Javadoc)
+     * @see javax.accessibility.AccessibleValue#getMinimumAccessibleValue()
+     */
+    public Number getMinimumAccessibleValue()
+    {
+      return new Integer(0);
+    }
+
+    /* (non-Javadoc)
+     * @see javax.accessibility.AccessibleValue#getMaximumAccessibleValue()
+     */
+    public Number getMaximumAccessibleValue()
+    {
+      return new Integer(0);
+    }
+
+    public AccessibleRole getAccessibleRole()
+    {
+      return AccessibleRole.PUSH_BUTTON;
+    }
+  }

 /*************************************************************************/

@@ -314,6 +413,11 @@
     + getWidth () + "x" + getHeight () + ",label=" + getLabel ();
 }

+public AccessibleContext getAccessibleContext()
+{
+  return new AccessibleAWTButton();
+}
+
   /**
    * Generate a unique name for this button.
    *