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comparison dwtx/jface/text/contentassist/ContextInformation.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, 2006 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.contentassist.ContextInformation;
14
15 import dwt.dwthelper.utils;
16
17
18
19 import dwt.graphics.Image;
20 import dwtx.core.runtime.Assert;
21
22
23
24 /**
25 * A default implementation of the <code>IContextInformation</code> interface.
26 */
27 public final class ContextInformation : IContextInformation {
28
29 /** The name of the context. */
30 private final String fContextDisplayString;
31 /** The information to be displayed. */
32 private final String fInformationDisplayString;
33 /** The image to be displayed. */
34 private final Image fImage;
35
36 /**
37 * Creates a new context information without an image.
38 *
39 * @param contextDisplayString the string to be used when presenting the context
40 * @param informationDisplayString the string to be displayed when presenting the context information
41 */
42 public ContextInformation(String contextDisplayString, String informationDisplayString) {
43 this(null, contextDisplayString, informationDisplayString);
44 }
45
46 /**
47 * Creates a new context information with an image.
48 *
49 * @param image the image to display when presenting the context information
50 * @param contextDisplayString the string to be used when presenting the context
51 * @param informationDisplayString the string to be displayed when presenting the context information,
52 * may not be <code>null</code>
53 */
54 public ContextInformation(Image image, String contextDisplayString, String informationDisplayString) {
55
56 Assert.isNotNull(informationDisplayString);
57
58 fImage= image;
59 fContextDisplayString= contextDisplayString;
60 fInformationDisplayString= informationDisplayString;
61 }
62
63 /*
64 * @see IContextInformation#equals(Object)
65 */
66 public bool equals(Object object) {
67 if (object instanceof IContextInformation) {
68 IContextInformation contextInformation= (IContextInformation) object;
69 bool equals= fInformationDisplayString.equalsIgnoreCase(contextInformation.getInformationDisplayString());
70 if (fContextDisplayString !is null)
71 equals= equals && fContextDisplayString.equalsIgnoreCase(contextInformation.getContextDisplayString());
72 return equals;
73 }
74 return false;
75 }
76
77 /*
78 * @see java.lang.Object#hashCode()
79 * @since 3.1
80 */
81 public int hashCode() {
82 int low= fContextDisplayString !is null ? fContextDisplayString.hashCode() : 0;
83 return (fInformationDisplayString.hashCode() << 16) | low;
84 }
85
86 /*
87 * @see IContextInformation#getInformationDisplayString()
88 */
89 public String getInformationDisplayString() {
90 return fInformationDisplayString;
91 }
92
93 /*
94 * @see IContextInformation#getImage()
95 */
96 public Image getImage() {
97 return fImage;
98 }
99
100 /*
101 * @see IContextInformation#getContextDisplayString()
102 */
103 public String getContextDisplayString() {
104 if (fContextDisplayString !is null)
105 return fContextDisplayString;
106 return fInformationDisplayString;
107 }
108 }