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comparison org.eclipse.draw2d/src/org/eclipse/draw2d/CheckBox.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) 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 org.eclipse.draw2d.CheckBox;
14
15 import java.lang.all;
16 import org.eclipse.swt.dwthelper.ByteArrayInputStream;
17
18 import org.eclipse.swt.graphics.Image;
19 import org.eclipse.swt.graphics.ImageData;
20 import org.eclipse.draw2d.Toggle;
21 import org.eclipse.draw2d.Label;
22 import org.eclipse.draw2d.ChangeListener;
23 import org.eclipse.draw2d.ChangeEvent;
24 import org.eclipse.draw2d.ButtonModel;
25
26 /**
27 * A Checkbox is a toggle figure which toggles between the checked and unchecked figures
28 * to simulate a check box. A check box contains a text label to represent it.
29 */
30 public final class CheckBox
31 : Toggle
32 {
33
34 private Label label = null;
35
36 private static Image
37 UNCHECKED_,
38 CHECKED_;
39
40 package static Image UNCHECKED(){
41 if( UNCHECKED_ is null ){
42 synchronized( CheckBox.classinfo ){
43 if( UNCHECKED_ is null ){
44 UNCHECKED_ = createImage( getImportData!("org.eclipse.draw2d.checkboxenabledoff.gif"));
45 }
46 }
47 }
48 assert( UNCHECKED_ );
49 return UNCHECKED_;
50 }
51 package static Image CHECKED(){
52 if( CHECKED_ is null ){
53 synchronized( CheckBox.classinfo ){
54 if( CHECKED_ is null ){
55 CHECKED_ = createImage( getImportData!("org.eclipse.draw2d.checkboxenabledon.gif"));
56 }
57 }
58 }
59 assert( CHECKED_ );
60 return CHECKED_;
61 }
62
63 private static Image createImage( ImportData importdata ) {
64 Image image = new Image(null, new ImageData(new ByteArrayInputStream( cast(byte[]) importdata.data)));
65 return image;
66 }
67
68 /**
69 * Constructs a CheckBox with no text.
70 *
71 * @since 2.0
72 */
73 public this() {
74 this(""); //$NON-NLS-1$
75 }
76
77 /**
78 * Constructs a CheckBox with the passed text in its label.
79 * @param text The label text
80 * @since 2.0
81 */
82 public this(String text) {
83 setContents(label = new Label(text, UNCHECKED));
84 }
85
86 /**
87 * Adjusts CheckBox's icon depending on selection status.
88 *
89 * @since 2.0
90 */
91 protected void handleSelectionChanged() {
92 if (isSelected())
93 label.setIcon(CHECKED);
94 else
95 label.setIcon(UNCHECKED);
96 }
97
98 /**
99 * Initializes this Clickable by setting a default model and adding a clickable event
100 * handler for that model. Also adds a ChangeListener to update icon when selection
101 * status changes.
102 *
103 * @since 2.0
104 */
105 protected void init() {
106 super.init();
107 addChangeListener(new class() ChangeListener {
108 public void handleStateChanged(ChangeEvent changeEvent) {
109 if (changeEvent.getPropertyName().equals(ButtonModel.SELECTED_PROPERTY))
110 handleSelectionChanged();
111 }
112 });
113 }
114
115 }