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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2006 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwtx.jface.text.contentassist.ContextInformation;
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14
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15 import dwt.dwthelper.utils;
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16
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17
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18
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19 import dwt.graphics.Image;
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20 import dwtx.core.runtime.Assert;
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21
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22
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23
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24 /**
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25 * A default implementation of the <code>IContextInformation</code> interface.
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26 */
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27 public final class ContextInformation : IContextInformation {
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28
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29 /** The name of the context. */
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30 private final String fContextDisplayString;
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31 /** The information to be displayed. */
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32 private final String fInformationDisplayString;
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33 /** The image to be displayed. */
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34 private final Image fImage;
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35
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36 /**
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37 * Creates a new context information without an image.
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38 *
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39 * @param contextDisplayString the string to be used when presenting the context
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40 * @param informationDisplayString the string to be displayed when presenting the context information
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41 */
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42 public ContextInformation(String contextDisplayString, String informationDisplayString) {
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43 this(null, contextDisplayString, informationDisplayString);
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44 }
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45
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46 /**
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47 * Creates a new context information with an image.
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48 *
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49 * @param image the image to display when presenting the context information
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50 * @param contextDisplayString the string to be used when presenting the context
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51 * @param informationDisplayString the string to be displayed when presenting the context information,
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52 * may not be <code>null</code>
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53 */
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54 public ContextInformation(Image image, String contextDisplayString, String informationDisplayString) {
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55
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56 Assert.isNotNull(informationDisplayString);
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57
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58 fImage= image;
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59 fContextDisplayString= contextDisplayString;
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60 fInformationDisplayString= informationDisplayString;
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61 }
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62
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63 /*
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64 * @see IContextInformation#equals(Object)
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65 */
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66 public bool equals(Object object) {
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67 if (object instanceof IContextInformation) {
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68 IContextInformation contextInformation= (IContextInformation) object;
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69 bool equals= fInformationDisplayString.equalsIgnoreCase(contextInformation.getInformationDisplayString());
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70 if (fContextDisplayString !is null)
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71 equals= equals && fContextDisplayString.equalsIgnoreCase(contextInformation.getContextDisplayString());
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72 return equals;
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73 }
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74 return false;
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75 }
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76
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77 /*
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78 * @see java.lang.Object#hashCode()
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79 * @since 3.1
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80 */
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81 public int hashCode() {
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82 int low= fContextDisplayString !is null ? fContextDisplayString.hashCode() : 0;
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83 return (fInformationDisplayString.hashCode() << 16) | low;
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84 }
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85
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86 /*
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87 * @see IContextInformation#getInformationDisplayString()
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88 */
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89 public String getInformationDisplayString() {
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90 return fInformationDisplayString;
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91 }
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92
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93 /*
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94 * @see IContextInformation#getImage()
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95 */
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96 public Image getImage() {
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97 return fImage;
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98 }
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99
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100 /*
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101 * @see IContextInformation#getContextDisplayString()
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102 */
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103 public String getContextDisplayString() {
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104 if (fContextDisplayString !is null)
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105 return fContextDisplayString;
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106 return fInformationDisplayString;
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107 }
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108 }
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