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1 files changed, 258 insertions, 0 deletions

diff --git a/libjava/classpath/java/awt/event/InvocationEvent.java b/libjava/classpath/java/awt/event/InvocationEvent.java
new file mode 100644
index 000000000..afa09de13
--- /dev/null
+++ b/libjava/classpath/java/awt/event/InvocationEvent.java
@@ -0,0 +1,258 @@
+/* InvocationEvent.java -- call a runnable when dispatched
+   Copyright (C) 1999, 2002, 2004, 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 java.awt.event;
+
+import java.awt.AWTEvent;
+import java.awt.ActiveEvent;
+import java.awt.EventQueue;
+
+/**
+ * This event executes {@link Runnable#run()} of a target object when it is
+ * dispatched. This class is used by calls to <code>invokeLater</code> and
+ * <code>invokeAndWait</code>, so client code can use this fact to avoid
+ * writing special-casing AWTEventListener objects.
+ *
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ * @see ActiveEvent
+ * @see EventQueue#invokeLater(Runnable)
+ * @see EventQueue#invokeAndWait(Runnable)
+ * @see AWTEventListener
+ * @since 1.2
+ * @status updated to 1.4
+ */
+public class InvocationEvent extends AWTEvent implements ActiveEvent
+{
+  /**
+   * Compatible with JDK 1.2+.
+   */
+  private static final long serialVersionUID = 436056344909459450L;
+
+  /** This is the first id in the range of event ids used by this class. */
+  public static final int INVOCATION_FIRST = 1200;
+
+  /** This is the default id for this event type. */
+  public static final int INVOCATION_DEFAULT = 1200;
+
+  /** This is the last id in the range of event ids used by this class. */
+  public static final int INVOCATION_LAST = 1200;
+
+  /**
+   * This is the <code>Runnable</code> object to call when dispatched.
+   *
+   * @serial the runnable to execute
+   */
+  protected Runnable runnable;
+
+  /**
+   * This is the object to call <code>notifyAll()</code> on when
+   * the call to <code>run()</code> returns, or <code>null</code> if no
+   * object is to be notified.
+   *
+   * @serial the object to notify
+   */
+  protected Object notifier;
+
+  /**
+   * This variable is set to <code>true</code> if exceptions are caught
+   * and stored in a variable during the call to <code>run()</code>, otherwise
+   * exceptions are ignored and propagate up.
+   *
+   * @serial true to catch exceptions
+   */
+  protected boolean catchExceptions;
+
+  /**
+   * This is the caught exception thrown in the <code>run()</code> method. It
+   * is null if exceptions are ignored, the run method hasn't completed, or
+   * there were no exceptions.
+   *
+   * @serial the caught exception, if any
+   */
+  private Exception exception;
+
+  /**
+   * This is the caught Throwable thrown in the <code>run()</code> method.
+   * It is null if throwables are ignored, the run method hasn't completed,
+   * or there were no throwables thrown.
+   */
+  private Throwable throwable;
+
+  /**
+   * The timestamp when this event was created.
+   *
+   * @see #getWhen()
+   * @serial the timestamp
+   * @since 1.4
+   */
+  private final long when = EventQueue.getMostRecentEventTime();
+
+  /**
+   * Initializes a new instance of <code>InvocationEvent</code> with the
+   * specified source and runnable.
+   *
+   * @param source the source of the event
+   * @param runnable the <code>Runnable</code> object to invoke
+   * @throws IllegalArgumentException if source is null
+   */
+  public InvocationEvent(Object source, Runnable runnable)
+  {
+    this(source, INVOCATION_DEFAULT, runnable, null, false);
+  }
+
+  /**
+   * Initializes a new instance of <code>InvocationEvent</code> with the
+   * specified source, runnable, and notifier.  It will also catch exceptions
+   * if specified. If notifier is non-null, this will call notifyAll() on
+   * the object when the runnable is complete. If catchExceptions is true,
+   * this traps any exception in the runnable, otherwise it lets the exception
+   * propagate up the Event Dispatch thread.
+   *
+   * @param source the source of the event
+   * @param runnable the <code>Runnable</code> object to invoke
+   * @param notifier the object to notify, or null
+   * @param catchExceptions true to catch exceptions from the runnable
+   */
+  public InvocationEvent(Object source, Runnable runnable, Object notifier,
+                         boolean catchExceptions)
+  {
+    this(source, INVOCATION_DEFAULT, runnable, notifier, catchExceptions);
+  }
+
+  /**
+   * Initializes a new instance of <code>InvocationEvent</code> with the
+   * specified source, runnable, and notifier.  It will also catch exceptions
+   * if specified. If notifier is non-null, this will call notifyAll() on
+   * the object when the runnable is complete. If catchExceptions is true,
+   * this traps any exception in the runnable, otherwise it lets the exception
+   * propagate up the Event Dispatch thread. Note that an invalid id leads to
+   * unspecified results.
+   *
+   * @param source the source of the event
+   * @param id the event id
+   * @param runnable the <code>Runnable</code> object to invoke
+   * @param notifier the object to notify, or null
+   * @param catchExceptions true to catch exceptions from the runnable
+   */
+  protected InvocationEvent(Object source, int id, Runnable runnable,
+                            Object notifier, boolean catchExceptions)
+  {
+    super(source, id);
+    this.runnable = runnable;
+    this.notifier = notifier;
+    this.catchExceptions = catchExceptions;
+  }
+
+  /**
+   * This method calls the <code>run()</code> method of the runnable, traps
+   * exceptions if instructed to do so, and calls <code>notifyAll()</code>
+   * on any notifier if all worked successfully.
+   */
+  public void dispatch()
+  {
+    if (catchExceptions)
+      try
+        {
+          runnable.run();
+        }
+      catch (Throwable t)
+        {
+          throwable = t;
+          if (t instanceof Exception)
+            exception = (Exception)t;
+        }
+    else
+      runnable.run();
+
+    Object o = notifier;
+    if (o != null)
+      synchronized(o)
+        {
+          o.notifyAll();
+        }
+  }
+
+  /**
+   * This method returns the exception that occurred during the execution of
+   * the runnable, or <code>null</code> if not exception was thrown or
+   * exceptions were not caught.
+   *
+   * @return the exception thrown by the runnable
+   */
+  public Exception getException()
+  {
+    return exception;
+  }
+
+  /**
+   * Returns a throwable caught while executing the Runnable's run() method.
+   * Null if none was thrown or if this InvocationEvent doesn't catch
+   * throwables.
+   * @return the caught Throwable
+   * @since 1.5
+   */
+  public Throwable getThrowable()
+  {
+    return throwable;
+  }
+
+  /**
+   * Gets the timestamp of when this event was created.
+   *
+   * @return the timestamp of this event
+   * @since 1.4
+   */
+  public long getWhen()
+  {
+    return when;
+  }
+
+  /**
+   * This method returns a string identifying this event. This is formatted as:
+   * <code>"INVOCATION_DEFAULT,runnable=" + runnable + ",notifier=" + notifier
+   * + ",catchExceptions=" + catchExceptions + ",when=" + getWhen()</code>.
+   *
+   * @return a string identifying this event
+   */
+  public String paramString()
+  {
+    return (id == INVOCATION_DEFAULT ? "INVOCATION_DEFAULT,runnable="
+            : "unknown type,runnable=") + runnable + ",notifier=" + notifier
+      + ",catchExceptions=" + catchExceptions + ",when=" + when;
+  }
+} // class InvocationEvent