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comparison org.eclipse.ui.forms/src/org/eclipse/ui/internal/forms/widgets/WrappedPageBook.d @ 12:bc29606a740c

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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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11:43904fec5dca 12:bc29606a740c
1 /*******************************************************************************
2 * Copyright (c) 2004, 2007 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 org.eclipse.ui.internal.forms.widgets.WrappedPageBook;
14
15 import org.eclipse.swt.SWT;
16 import org.eclipse.swt.graphics.Point;
17 import org.eclipse.swt.widgets.Composite;
18 import org.eclipse.swt.widgets.Control;
19 import org.eclipse.swt.widgets.Layout;
20 import org.eclipse.ui.forms.widgets.ILayoutExtension;
21
22 import java.lang.all;
23 import java.util.Set;
24
25 /**
26 * A pagebook is a composite control where only a single control is visible at
27 * a time. It is similar to a notebook, but without tabs.
28 * <p>
29 * This class may be instantiated; it is not intended to be subclassed.
30 * </p>
31 */
32 public class WrappedPageBook : Composite {
33 class PageBookLayout : Layout, ILayoutExtension {
34 protected Point computeSize(Composite composite, int wHint, int hHint,
35 bool flushCache) {
36 if (wHint !is SWT.DEFAULT && hHint !is SWT.DEFAULT)
37 return new Point(wHint, hHint);
38 Point result = null;
39 if (currentPage !is null) {
40 result = currentPage.computeSize(wHint, hHint, flushCache);
41 } else {
42 result = new Point(0, 0);
43 }
44 return result;
45 }
46 protected void layout(Composite composite, bool flushCache) {
47 if (currentPage !is null) {
48 currentPage.setBounds(composite.getClientArea());
49 }
50 }
51 /*
52 * (non-Javadoc)
53 *
54 * @see org.eclipse.ui.forms.widgets.ILayoutExtension#computeMaximumWidth(org.eclipse.swt.widgets.Composite,
55 * bool)
56 */
57 public int computeMaximumWidth(Composite parent, bool changed) {
58 return computeSize(parent, SWT.DEFAULT, SWT.DEFAULT, changed).x;
59 }
60 /*
61 * (non-Javadoc)
62 *
63 * @see org.eclipse.ui.forms.widgets.ILayoutExtension#computeMinimumWidth(org.eclipse.swt.widgets.Composite,
64 * bool)
65 */
66 public int computeMinimumWidth(Composite parent, bool changed) {
67 return computeSize(parent, 0, SWT.DEFAULT, changed).x;
68 }
69 }
70 /**
71 * The current control; <code>null</code> if none.
72 */
73 private Control currentPage = null;
74 /**
75 * Creates a new empty pagebook.
76 *
77 * @param parent
78 * the parent composite
79 * @param style
80 * the SWT style bits
81 */
82 public this(Composite parent, int style) {
83 super(parent, style);
84 setLayout(new PageBookLayout());
85 }
86 /**
87 * Shows the given page. This method has no effect if the given page is not
88 * contained in this pagebook.
89 *
90 * @param page
91 * the page to show
92 */
93 public void showPage(Control page) {
94 if (page is currentPage)
95 return;
96 if (page.getParent() !is this)
97 return;
98 Control oldPage = currentPage;
99 currentPage = page;
100 // show new page
101 if (page !is null) {
102 if (!page.isDisposed()) {
103 //page.setVisible(true);
104 layout(true);
105 page.setVisible(true);
106 }
107 }
108 // hide old *after* new page has been made visible in order to avoid
109 // flashing
110 if (oldPage !is null && !oldPage.isDisposed())
111 oldPage.setVisible(false);
112 }
113 public Point computeSize(int wHint, int hHint, bool changed) {
114 return (cast(PageBookLayout) getLayout()).computeSize(this, wHint, hHint,
115 changed);
116 }
117 }