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comparison dwtx/jface/text/ITextViewerExtension4.d @ 129:eb30df5ca28b

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Added JFace Text sources
author Frank Benoit <benoit@tionex.de>
date Sat, 23 Aug 2008 19:10:48 +0200
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128:8df1d4193877 129:eb30df5ca28b
1 /*******************************************************************************
2 * Copyright (c) 2000, 2005 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Port to the D programming language:
11 * Frank Benoit <benoit@tionex.de>
12 *******************************************************************************/
13 module dwtx.jface.text.ITextViewerExtension4;
14
15 import dwt.dwthelper.utils;
16
17
18 /**
19 * Extension interface for {@link dwtx.jface.text.ITextViewer}.
20 * Introduces the concept of text presentation listeners and improves focus
21 * handling among widget token keepers.
22 * <p>
23 * A {@link dwtx.jface.text.ITextPresentationListener}is a listener that
24 * is informed by the viewer that a text presentation is about to be applied.
25 * During this callback the listener is allowed to modify the presentation. Text
26 * presentation listeners are thus a mean to participate in the process of text
27 * presentation creation.
28 *
29 * @since 3.0
30 */
31 public interface ITextViewerExtension4 {
32
33 /**
34 * Instructs the receiver to request the {@link IWidgetTokenKeeper}
35 * currently holding the widget token to take the keyboard focus.
36 *
37 * @return <code>true</code> if there was any
38 * <code>IWidgetTokenKeeper</code> that was asked to take the
39 * focus, <code>false</code> otherwise
40 */
41 bool moveFocusToWidgetToken();
42
43 /**
44 * Adds the given text presentation listener to this text viewer.
45 * This call has no effect if the listener is already registered
46 * with this text viewer.
47 *
48 * @param listener the text presentation listener
49 */
50 void addTextPresentationListener(ITextPresentationListener listener);
51
52 /**
53 * Removes the given text presentation listener from this text viewer.
54 * This call has no effect if the listener is not registered with this
55 * text viewer.
56 *
57 * @param listener the text presentation listener
58 */
59 void removeTextPresentationListener(ITextPresentationListener listener);
60 }