--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/text/IWidgetTokenKeeper.d	Sat Aug 23 19:10:48 2008 +0200
@@ -0,0 +1,57 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 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.jface.text.IWidgetTokenKeeper;
+
+import dwt.dwthelper.utils;
+
+/**
+ * A widget token keeper may require a widget token from an
+ * {@link dwtx.jface.text.IWidgetTokenOwner} and release the token to the
+ * owner after usage. A widget token owner may request the token from the token
+ * keeper. The keeper may deny the return of the token.
+ * <p>
+ * The widget token owner and keeper interplay is used by a text viewer in
+ * order to manage the appearance and disappearance of addition, on-top popup
+ * windows such as text hovers, content assist, etc.
+ *
+ * In order to provide backward compatibility for clients of
+ * <code>IWidgetTokeKeeper</code>, extension interfaces are used as a means
+ * of evolution. The following extension interfaces exist:
+ * <ul>
+ * <li>{@link dwtx.jface.text.IWidgetTokenKeeperExtension} since version
+ *     3.0 introducing priorities when requesting a widget token and thus replacing
+ *     the non-prioritized scheme. It also allows a client to force a widget token
+ *     keeper to accept focus.</li>
+ * </ul>
+ *
+ * @see dwtx.jface.text.IWidgetTokenKeeperExtension
+ * @since 2.0
+ */
+public interface IWidgetTokenKeeper {
+
+    /**
+     * The given widget token owner requests the widget token from this token
+     * keeper. Returns <code>true</code> if the token is released by this
+     * token keeper. Note, the keeper must not call
+     * <code>releaseWidgetToken(IWidgetTokenKeeper)</code> explicitly.
+     * <p>
+     * Replaced by
+     * {@link IWidgetTokenKeeperExtension#requestWidgetToken(IWidgetTokenOwner, int)}.
+     *
+     * @param owner the token owner
+     * @return <code>true</code> if token has been released <code>false</code>
+     *         otherwise
+     */
+    bool requestWidgetToken(IWidgetTokenOwner owner);
+}