| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.jface.text; |
| |
| |
| import org.eclipse.swt.custom.VerifyKeyListener; |
| import org.eclipse.swt.widgets.Control; |
| |
| |
| /** |
| * Extension interface for <code>ITextViewer</code>. Extends <code>ITextViewer</code> with |
| * <ul> |
| * <li> a replacement of the event consumer mechanism (methods dealing with <code>VerifyKeyListener</code>) |
| * <li> access to the control of this viewer |
| * <li> marked region support a la emacs |
| * <li> control of the viewer's redraw behavior (@see #setRedraw) |
| * <li> access to the viewer's rewrite target |
| * </ul> |
| * |
| * @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 beginnng 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 or clears the mark. If offset is <code>-1</code>, the mark is cleared. |
| * If a mark is set and the selection is empty, cut and copy actions performed on this |
| * text viewer peform on the region limited by the positions of the mark and the cursor. |
| * |
| * @param offset the offset of the mark |
| */ |
| void setMark(int offset); |
| |
| /** |
| * Returns the mark position, <code>-1</code> if mark is not set. |
| * |
| * @return the mark position 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 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. |
| * |
| * @param redraw <code>true</code> to enable redrawing, <code>false</code> otherwise |
| */ |
| void setRedraw(boolean redraw); |
| |
| /** |
| * Returns the viewer's rewrite target. |
| * |
| * @return the viewer's rewrite target |
| */ |
| IRewriteTarget getRewriteTarget(); |
| } |