--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/core/commands/contexts/ContextEvent.d	Wed Mar 26 00:57:19 2008 +0100
@@ -0,0 +1,90 @@
+/*******************************************************************************
+ * Copyright (c) 2004, 2006 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+
+module dwtx.core.commands.contexts.ContextEvent;
+
+import dwtx.core.commands.contexts.Context;
+import dwtx.core.commands.common.AbstractNamedHandleEvent;
+import dwt.dwthelper.utils;
+
+/**
+ * An instance of this class describes changes to an instance of
+ * <code>IContext</code>.
+ * <p>
+ * This class is not intended to be extended by clients.
+ * </p>
+ *
+ * @since 3.1
+ * @see IContextListener#contextChanged(ContextEvent)
+ */
+public final class ContextEvent : AbstractNamedHandleEvent {
+
+    /**
+     * The bit used to represent whether the context has changed its parent.
+     */
+    private static const int CHANGED_PARENT_ID = LAST_USED_BIT << 1;
+
+    /**
+     * The context that has changed. This value is never <code>null</code>.
+     */
+    private Context context;
+
+    /**
+     * Creates a new instance of this class.
+     *
+     * @param context
+     *            the instance of the interface that changed; must not be
+     *            <code>null</code>.
+     * @param definedChanged
+     *            <code>true</code>, iff the defined property changed.
+     * @param nameChanged
+     *            <code>true</code>, iff the name property changed.
+     * @param descriptionChanged
+     *            <code>true</code>, iff the description property changed.
+     * @param parentIdChanged
+     *            <code>true</code>, iff the parentId property changed.
+     */
+    public this(Context context, bool definedChanged,
+            bool nameChanged, bool descriptionChanged,
+            bool parentIdChanged) {
+        super(definedChanged, descriptionChanged, nameChanged);
+
+        if (context is null) {
+            throw new NullPointerException();
+        }
+        this.context = context;
+
+        if (parentIdChanged) {
+            changedValues |= CHANGED_PARENT_ID;
+        }
+    }
+
+    /**
+     * Returns the instance of the interface that changed.
+     *
+     * @return the instance of the interface that changed. Guaranteed not to be
+     *         <code>null</code>.
+     */
+    public final Context getContext() {
+        return context;
+    }
+
+    /**
+     * Returns whether or not the parentId property changed.
+     *
+     * @return <code>true</code>, iff the parentId property changed.
+     */
+    public final bool isParentIdChanged() {
+        return ((changedValues & CHANGED_PARENT_ID) !is 0);
+    }
+}