--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/text/ITextViewerExtension.d	Sat Aug 23 19:10:48 2008 +0200
@@ -0,0 +1,120 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2005 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.ITextViewerExtension;
+
+import dwt.dwthelper.utils;
+
+
+import dwt.custom.VerifyKeyListener;
+import dwt.widgets.Control;
+
+
+/**
+ * Extension interface for {@link dwtx.jface.text.ITextViewer}.
+ * <p>
+ * This extension interface replaces the event consumer mechanism (
+ * {@link dwtx.jface.text.ITextViewer#setEventConsumer(IEventConsumer)})
+ * with a set of methods that allow to manage a sequence of
+ * {@link dwt.custom.VerifyKeyListener}objects. It also adds
+ * <ul>
+ * <li>access to the control of this viewer</li>
+ * <li>marked region support as in emacs</li>
+ * <li>control of the viewer's redraw behavior by introducing
+ *     <code>setRedraw(bool)</code>
+ * <li>access to the viewer's rewrite target.
+ * </ul>
+ *
+ * A rewrite target ({@link dwtx.jface.text.IRewriteTarget}) represents
+ * an facade offering the necessary methods to manipulate a document that is the
+ * input document of a text viewer.
+ *
+ * @since 2.0
+ */
+public interface ITextViewerExtension {
+
+    /**
+     * Inserts the verify key listener at the beginning of the viewer's list of
+     * verify key listeners. If the listener is already registered with the
+     * viewer this call moves the listener to the beginning of the list.
+     *
+     * @param listener the listener to be inserted
+     */
+    void prependVerifyKeyListener(VerifyKeyListener listener);
+
+    /**
+     * Appends a verify key listener to the viewer's list of verify key
+     * listeners. If the listener is already registered with the viewer this
+     * call moves the listener to the end of the list.
+     *
+     * @param listener the listener to be added
+     */
+    void appendVerifyKeyListener(VerifyKeyListener listener);
+
+    /**
+     * Removes the verify key listener from the viewer's list of verify key listeners.
+     * If the listener is not registered with this viewer, this call has no effect.
+     *
+     * @param listener the listener to be removed
+     */
+    void removeVerifyKeyListener(VerifyKeyListener listener);
+
+    /**
+     * Returns the control of this viewer.
+     *
+     * @return the control of this viewer
+     */
+    Control getControl();
+
+    /**
+     * Sets a mark at the given offset or clears the mark if the specified
+     * offset is <code>-1</code>. If a mark is set and the selection is
+     * empty, cut and copy actions performed on this text viewer work on the
+     * region described by the positions of the mark and the cursor.
+     *
+     * @param offset the offset of the mark
+     */
+    void setMark(int offset);
+
+    /**
+     * Returns the position of the mark, <code>-1</code> if the mark is not set.
+     *
+     * @return the position of the mark or <code>-1</code> if no mark is set
+     */
+    int getMark();
+
+    /**
+     * Enables/disables the redrawing of this text viewer. This temporarily
+     * disconnects the viewer from its underlying
+     * {@link dwt.custom.StyledText}widget. While being
+     * disconnected only the viewer's selection may be changed using
+     * <code>setSelectedRange</code>. Any direct manipulation of the widget
+     * as well as calls to methods that change the viewer's presentation state
+     * (such as enabling the segmented view) are not allowed. When redrawing is
+     * disabled the viewer does not send out any selection or view port change
+     * notification. When redrawing is enabled again, a selection change
+     * notification is sent out for the selected range and this range is
+     * revealed causing a view port changed notification.
+     *
+     * @param redraw <code>true</code> to enable redrawing, <code>false</code>
+     *            otherwise
+     */
+    void setRedraw(bool redraw);
+
+    /**
+     * Returns the viewer's rewrite target.
+     *
+     * @return the viewer's rewrite target
+     */
+    IRewriteTarget getRewriteTarget();
+}