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1 /*******************************************************************************
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2 * Copyright (c) 2008 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 * Cagatay Calli <ccalli@gmail.com> - [find/replace] retain caps when replacing - https://bugs.eclipse.org/bugs/show_bug.cgi?id=28949
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11 * Port to the D programming language:
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12 * Frank Benoit <benoit@tionex.de>
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13 *******************************************************************************/
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14 module dwtx.jface.text.FindReplaceDocumentAdapterContentProposalProvider;
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15
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16 import dwt.dwthelper.utils;
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17
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18 import java.util.ArrayList;
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19
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20 import dwtx.jface.fieldassist.IContentProposal;
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21 import dwtx.jface.fieldassist.IContentProposalProvider;
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22
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23
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24 /**
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25 * Content assist proposal provider for the {@link FindReplaceDocumentAdapter}.
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26 * <p>
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27 * Clients can subclass to provide additional proposals in case they are supported
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28 * by their own find/replace mechanism.
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29 * </p>
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30 * <p>
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31 * <strong>Note:</strong> Clients must not make any assumptions about the returned
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32 * proposals. This can change from release to release to adapt to
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33 * changes made in {@link FindReplaceDocumentAdapter}.
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34 * </p>
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35 *
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36 * @since 3.4
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37 */
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38 public class FindReplaceDocumentAdapterContentProposalProvider : IContentProposalProvider {
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39
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40
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41 /**
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42 * Proposal computer.
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43 */
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44 private static class ProposalComputer {
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45
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46 private static class Proposal : IContentProposal {
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47
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48 private String fContent;
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49 private String fLabel;
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50 private String fDescription;
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51 private int fCursorPosition;
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52
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53 Proposal(String content, String label, String description, int cursorPosition) {
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54 fContent= content;
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55 fLabel= label;
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56 fDescription= description;
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57 fCursorPosition= cursorPosition;
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58 }
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59
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60 public String getContent() {
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61 return fContent;
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62 }
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63
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64 public String getLabel() {
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65 return fLabel;
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66 }
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67
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68 public String getDescription() {
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69 return fDescription;
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70 }
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71
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72 public int getCursorPosition() {
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73 return fCursorPosition;
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74 }
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75 }
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76
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77
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78 /**
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79 * The whole regular expression.
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80 */
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81 private final String fExpression;
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82 /**
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83 * The document offset.
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84 */
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85 private final int fDocumentOffset;
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86 /**
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87 * The high-priority proposals.
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88 */
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89 private final ArrayList fPriorityProposals;
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90 /**
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91 * The low-priority proposals.
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92 */
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93 private final ArrayList fProposals;
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94 /**
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95 * <code>true</code> iff <code>fExpression</code> ends with an open escape.
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96 */
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97 private final bool fIsEscape;
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98
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99 /**
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100 * Creates a new Proposal Computer.
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101 * @param contents the contents of the subject control
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102 * @param position the cursor position
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103 */
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104 public ProposalComputer(String contents, int position) {
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105 fExpression= contents;
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106 fDocumentOffset= position;
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107 fPriorityProposals= new ArrayList();
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108 fProposals= new ArrayList();
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109
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110 bool isEscape= false;
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111 esc: for (int i= position - 1; i >= 0; i--) {
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112 if (fExpression.charAt(i) is '\\')
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113 isEscape= !isEscape;
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114 else
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115 break esc;
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116 }
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117 fIsEscape= isEscape;
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118 }
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119
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120 /**
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121 * Computes applicable proposals for the find field.
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122 * @return the proposals
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123 */
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124 public IContentProposal[] computeFindProposals() {
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125 //characters
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126 addBsProposal("\\\\", RegExMessages.getString("displayString_bs_bs"), RegExMessages.getString("additionalInfo_bs_bs")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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127 addBracketProposal("\\0", 2, RegExMessages.getString("displayString_bs_0"), RegExMessages.getString("additionalInfo_bs_0")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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128 addBracketProposal("\\x", 2, RegExMessages.getString("displayString_bs_x"), RegExMessages.getString("additionalInfo_bs_x")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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129 addBracketProposal("\\u", 2, RegExMessages.getString("displayString_bs_u"), RegExMessages.getString("additionalInfo_bs_u")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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130 addBsProposal("\\t", RegExMessages.getString("displayString_bs_t"), RegExMessages.getString("additionalInfo_bs_t")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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131 addBsProposal("\\R", RegExMessages.getString("displayString_bs_R"), RegExMessages.getString("additionalInfo_bs_R")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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132 addBsProposal("\\n", RegExMessages.getString("displayString_bs_n"), RegExMessages.getString("additionalInfo_bs_n")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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133 addBsProposal("\\r", RegExMessages.getString("displayString_bs_r"), RegExMessages.getString("additionalInfo_bs_r")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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134 addBsProposal("\\f", RegExMessages.getString("displayString_bs_f"), RegExMessages.getString("additionalInfo_bs_f")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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135 addBsProposal("\\a", RegExMessages.getString("displayString_bs_a"), RegExMessages.getString("additionalInfo_bs_a")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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136 addBsProposal("\\e", RegExMessages.getString("displayString_bs_e"), RegExMessages.getString("additionalInfo_bs_e")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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137 addBracketProposal("\\c", 2, RegExMessages.getString("displayString_bs_c"), RegExMessages.getString("additionalInfo_bs_c")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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138
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139 if (! fIsEscape)
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140 addBracketProposal(".", 1, RegExMessages.getString("displayString_dot"), RegExMessages.getString("additionalInfo_dot")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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141 addBsProposal("\\d", RegExMessages.getString("displayString_bs_d"), RegExMessages.getString("additionalInfo_bs_d")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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142 addBsProposal("\\D", RegExMessages.getString("displayString_bs_D"), RegExMessages.getString("additionalInfo_bs_D")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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143 addBsProposal("\\s", RegExMessages.getString("displayString_bs_s"), RegExMessages.getString("additionalInfo_bs_s")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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144 addBsProposal("\\S", RegExMessages.getString("displayString_bs_S"), RegExMessages.getString("additionalInfo_bs_S")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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145 addBsProposal("\\w", RegExMessages.getString("displayString_bs_w"), RegExMessages.getString("additionalInfo_bs_w")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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146 addBsProposal("\\W", RegExMessages.getString("displayString_bs_W"), RegExMessages.getString("additionalInfo_bs_W")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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147
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148 // back reference
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149 addBsProposal("\\", RegExMessages.getString("displayString_bs_i"), RegExMessages.getString("additionalInfo_bs_i")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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150
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151 //quoting
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152 addBsProposal("\\", RegExMessages.getString("displayString_bs"), RegExMessages.getString("additionalInfo_bs")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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153 addBsProposal("\\Q", RegExMessages.getString("displayString_bs_Q"), RegExMessages.getString("additionalInfo_bs_Q")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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154 addBsProposal("\\E", RegExMessages.getString("displayString_bs_E"), RegExMessages.getString("additionalInfo_bs_E")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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155
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156 //character sets
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157 if (! fIsEscape) {
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158 addBracketProposal("[]", 1, RegExMessages.getString("displayString_set"), RegExMessages.getString("additionalInfo_set")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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159 addBracketProposal("[^]", 2, RegExMessages.getString("displayString_setExcl"), RegExMessages.getString("additionalInfo_setExcl")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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160 addBracketProposal("[-]", 1, RegExMessages.getString("displayString_setRange"), RegExMessages.getString("additionalInfo_setRange")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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161 addProposal("&&", RegExMessages.getString("displayString_setInter"), RegExMessages.getString("additionalInfo_setInter")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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162 }
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163 if (! fIsEscape && fDocumentOffset > 0 && fExpression.charAt(fDocumentOffset - 1) is '\\') {
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164 addProposal("\\p{}", 3, RegExMessages.getString("displayString_posix"), RegExMessages.getString("additionalInfo_posix")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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165 addProposal("\\P{}", 3, RegExMessages.getString("displayString_posixNot"), RegExMessages.getString("additionalInfo_posixNot")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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166 } else {
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167 addBracketProposal("\\p{}", 3, RegExMessages.getString("displayString_posix"), RegExMessages.getString("additionalInfo_posix")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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168 addBracketProposal("\\P{}", 3, RegExMessages.getString("displayString_posixNot"), RegExMessages.getString("additionalInfo_posixNot")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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169 }
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170
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171 //boundary matchers
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172 if (fDocumentOffset is 0) {
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173 addPriorityProposal("^", RegExMessages.getString("displayString_start"), RegExMessages.getString("additionalInfo_start")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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174 } else if (fDocumentOffset is 1 && fExpression.charAt(0) is '^') {
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175 addBracketProposal("^", 1, RegExMessages.getString("displayString_start"), RegExMessages.getString("additionalInfo_start")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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176 }
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177 if (fDocumentOffset is fExpression.length()) {
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178 addProposal("$", RegExMessages.getString("displayString_end"), RegExMessages.getString("additionalInfo_end")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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179 }
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180 addBsProposal("\\b", RegExMessages.getString("displayString_bs_b"), RegExMessages.getString("additionalInfo_bs_b")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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181 addBsProposal("\\B", RegExMessages.getString("displayString_bs_B"), RegExMessages.getString("additionalInfo_bs_B")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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182 addBsProposal("\\A", RegExMessages.getString("displayString_bs_A"), RegExMessages.getString("additionalInfo_bs_A")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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183 addBsProposal("\\G", RegExMessages.getString("displayString_bs_G"), RegExMessages.getString("additionalInfo_bs_G")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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184 addBsProposal("\\Z", RegExMessages.getString("displayString_bs_Z"), RegExMessages.getString("additionalInfo_bs_Z")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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185 addBsProposal("\\z", RegExMessages.getString("displayString_bs_z"), RegExMessages.getString("additionalInfo_bs_z")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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186
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187 if (! fIsEscape) {
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188 //capturing groups
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189 addBracketProposal("()", 1, RegExMessages.getString("displayString_group"), RegExMessages.getString("additionalInfo_group")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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190
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191 //flags
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192 addBracketProposal("(?)", 2, RegExMessages.getString("displayString_flag"), RegExMessages.getString("additionalInfo_flag")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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193 addBracketProposal("(?:)", 3, RegExMessages.getString("displayString_flagExpr"), RegExMessages.getString("additionalInfo_flagExpr")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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194
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195 //non-capturing group
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196 addBracketProposal("(?:)", 3, RegExMessages.getString("displayString_nonCap"), RegExMessages.getString("additionalInfo_nonCap")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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197 addBracketProposal("(?>)", 3, RegExMessages.getString("displayString_atomicCap"), RegExMessages.getString("additionalInfo_atomicCap")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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198
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199 //look around
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200 addBracketProposal("(?=)", 3, RegExMessages.getString("displayString_posLookahead"), RegExMessages.getString("additionalInfo_posLookahead")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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201 addBracketProposal("(?!)", 3, RegExMessages.getString("displayString_negLookahead"), RegExMessages.getString("additionalInfo_negLookahead")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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202 addBracketProposal("(?<=)", 4, RegExMessages.getString("displayString_posLookbehind"), RegExMessages.getString("additionalInfo_posLookbehind")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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203 addBracketProposal("(?<!)", 4, RegExMessages.getString("displayString_negLookbehind"), RegExMessages.getString("additionalInfo_negLookbehind")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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204
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205 //greedy quantifiers
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206 addBracketProposal("?", 1, RegExMessages.getString("displayString_quest"), RegExMessages.getString("additionalInfo_quest")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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207 addBracketProposal("*", 1, RegExMessages.getString("displayString_star"), RegExMessages.getString("additionalInfo_star")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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208 addBracketProposal("+", 1, RegExMessages.getString("displayString_plus"), RegExMessages.getString("additionalInfo_plus")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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209 addBracketProposal("{}", 1, RegExMessages.getString("displayString_exact"), RegExMessages.getString("additionalInfo_exact")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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210 addBracketProposal("{,}", 1, RegExMessages.getString("displayString_least"), RegExMessages.getString("additionalInfo_least")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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211 addBracketProposal("{,}", 1, RegExMessages.getString("displayString_count"), RegExMessages.getString("additionalInfo_count")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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212
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213 //lazy quantifiers
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214 addBracketProposal("??", 1, RegExMessages.getString("displayString_questLazy"), RegExMessages.getString("additionalInfo_questLazy")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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215 addBracketProposal("*?", 1, RegExMessages.getString("displayString_starLazy"), RegExMessages.getString("additionalInfo_starLazy")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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216 addBracketProposal("+?", 1, RegExMessages.getString("displayString_plusLazy"), RegExMessages.getString("additionalInfo_plusLazy")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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217 addBracketProposal("{}?", 1, RegExMessages.getString("displayString_exactLazy"), RegExMessages.getString("additionalInfo_exactLazy")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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218 addBracketProposal("{,}?", 1, RegExMessages.getString("displayString_leastLazy"), RegExMessages.getString("additionalInfo_leastLazy")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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219 addBracketProposal("{,}?", 1, RegExMessages.getString("displayString_countLazy"), RegExMessages.getString("additionalInfo_countLazy")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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220
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221 //possessive quantifiers
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222 addBracketProposal("?+", 1, RegExMessages.getString("displayString_questPoss"), RegExMessages.getString("additionalInfo_questPoss")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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223 addBracketProposal("*+", 1, RegExMessages.getString("displayString_starPoss"), RegExMessages.getString("additionalInfo_starPoss")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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224 addBracketProposal("++", 1, RegExMessages.getString("displayString_plusPoss"), RegExMessages.getString("additionalInfo_plusPoss")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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225 addBracketProposal("{}+", 1, RegExMessages.getString("displayString_exactPoss"), RegExMessages.getString("additionalInfo_exactPoss")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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226 addBracketProposal("{,}+", 1, RegExMessages.getString("displayString_leastPoss"), RegExMessages.getString("additionalInfo_leastPoss")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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227 addBracketProposal("{,}+", 1, RegExMessages.getString("displayString_countPoss"), RegExMessages.getString("additionalInfo_countPoss")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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228
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229 //alternative
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230 addBracketProposal("|", 1, RegExMessages.getString("displayString_alt"), RegExMessages.getString("additionalInfo_alt")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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231 }
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232
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233 fPriorityProposals.addAll(fProposals);
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234 return (IContentProposal[]) fPriorityProposals.toArray(new IContentProposal[fProposals.size()]);
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235 }
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236
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237 /**
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238 * Computes applicable proposals for the replace field.
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239 * @return the proposals
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240 */
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241 public IContentProposal[] computeReplaceProposals() {
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242 if (fDocumentOffset > 0 && '$' is fExpression.charAt(fDocumentOffset - 1)) {
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243 addProposal("", RegExMessages.getString("displayString_dollar"), RegExMessages.getString("additionalInfo_dollar")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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244 } else {
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245 if (! fIsEscape)
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246 addProposal("$", RegExMessages.getString("displayString_dollar"), RegExMessages.getString("additionalInfo_dollar")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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247 addBsProposal("\\", RegExMessages.getString("displayString_replace_cap"), RegExMessages.getString("additionalInfo_replace_cap")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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248 addBsProposal("\\", RegExMessages.getString("displayString_replace_bs"), RegExMessages.getString("additionalInfo_replace_bs")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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249 addBsProposal("\\R", RegExMessages.getString("displayString_replace_bs_R"), RegExMessages.getString("additionalInfo_replace_bs_R")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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250 addBracketProposal("\\x", 2, RegExMessages.getString("displayString_bs_x"), RegExMessages.getString("additionalInfo_bs_x")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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251 addBracketProposal("\\u", 2, RegExMessages.getString("displayString_bs_u"), RegExMessages.getString("additionalInfo_bs_u")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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252 addBsProposal("\\t", RegExMessages.getString("displayString_bs_t"), RegExMessages.getString("additionalInfo_bs_t")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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253 addBsProposal("\\n", RegExMessages.getString("displayString_replace_bs_n"), RegExMessages.getString("additionalInfo_replace_bs_n")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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254 addBsProposal("\\r", RegExMessages.getString("displayString_replace_bs_r"), RegExMessages.getString("additionalInfo_replace_bs_r")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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255 addBsProposal("\\f", RegExMessages.getString("displayString_bs_f"), RegExMessages.getString("additionalInfo_bs_f")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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256 addBsProposal("\\a", RegExMessages.getString("displayString_bs_a"), RegExMessages.getString("additionalInfo_bs_a")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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257 addBsProposal("\\e", RegExMessages.getString("displayString_bs_e"), RegExMessages.getString("additionalInfo_bs_e")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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258 addBracketProposal("\\c", 2, RegExMessages.getString("displayString_bs_c"), RegExMessages.getString("additionalInfo_bs_c")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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259 addBsProposal("\\C", RegExMessages.getString("displayString_replace_bs_C"), RegExMessages.getString("additionalInfo_replace_bs_C")); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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260 }
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261 fPriorityProposals.addAll(fProposals);
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262 return (IContentProposal[]) fPriorityProposals.toArray(new IContentProposal[fPriorityProposals.size()]);
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263 }
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264
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265 /**
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266 * Adds a proposal.
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267 *
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268 * @param proposal the string to be inserted
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269 * @param displayString the proposal's label
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270 * @param additionalInfo the additional information
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271 */
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272 private void addProposal(String proposal, String displayString, String additionalInfo) {
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273 fProposals.add(new Proposal(proposal, displayString, additionalInfo, proposal.length()));
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274 }
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275
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276 /**
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277 * Adds a proposal.
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278 *
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279 * @param proposal the string to be inserted
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280 * @param cursorPosition the cursor position after insertion,
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281 * relative to the start of the proposal
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282 * @param displayString the proposal's label
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283 * @param additionalInfo the additional information
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284 */
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285 private void addProposal(String proposal, int cursorPosition, String displayString, String additionalInfo) {
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286 fProposals.add(new Proposal(proposal, displayString, additionalInfo, cursorPosition));
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287 }
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288
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289 /**
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290 * Adds a proposal to the priority proposals list.
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291 *
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292 * @param proposal the string to be inserted
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293 * @param displayString the proposal's label
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294 * @param additionalInfo the additional information
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295 */
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296 private void addPriorityProposal(String proposal, String displayString, String additionalInfo) {
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297 fPriorityProposals.add(new Proposal(proposal, displayString, additionalInfo, proposal.length()));
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298 }
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299
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300 /**
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301 * Adds a proposal. Ensures that existing pre- and postfixes are not duplicated.
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302 *
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303 * @param proposal the string to be inserted
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304 * @param cursorPosition the cursor position after insertion,
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305 * relative to the start of the proposal
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306 * @param displayString the proposal's label
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307 * @param additionalInfo the additional information
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308 */
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309 private void addBracketProposal(String proposal, int cursorPosition, String displayString, String additionalInfo) {
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310 String prolog= fExpression.substring(0, fDocumentOffset);
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311 if (! fIsEscape && prolog.endsWith("\\") && proposal.startsWith("\\")) { //$NON-NLS-1$//$NON-NLS-2$
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312 fProposals.add(new Proposal(proposal, displayString, additionalInfo, cursorPosition));
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313 return;
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314 }
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315 for (int i= 1; i <= cursorPosition; i++) {
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316 String prefix= proposal.substring(0, i);
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317 if (prolog.endsWith(prefix)) {
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318 String postfix= proposal.substring(cursorPosition);
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319 String epilog= fExpression.substring(fDocumentOffset);
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320 if (epilog.startsWith(postfix)) {
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321 fPriorityProposals.add(new Proposal(proposal.substring(i, cursorPosition), displayString, additionalInfo, cursorPosition-i));
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322 } else {
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323 fPriorityProposals.add(new Proposal(proposal.substring(i), displayString, additionalInfo, cursorPosition-i));
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324 }
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325 return;
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326 }
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327 }
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328 fProposals.add(new Proposal(proposal, displayString, additionalInfo, cursorPosition));
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329 }
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330
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331 /**
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332 * Adds a proposal that starts with a backslash.
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333 * Ensures that the backslash is not repeated if already typed.
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334 *
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335 * @param proposal the string to be inserted
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336 * @param displayString the proposal's label
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337 * @param additionalInfo the additional information
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338 */
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339 private void addBsProposal(String proposal, String displayString, String additionalInfo) {
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340 String prolog= fExpression.substring(0, fDocumentOffset);
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341 int position= proposal.length();
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342 // If the string already contains the backslash, do not include in the proposal
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343 if (prolog.endsWith("\\")) { //$NON-NLS-1$
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344 position--;
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345 proposal= proposal.substring(1);
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346 }
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347
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348 if (fIsEscape) {
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349 fPriorityProposals.add(new Proposal(proposal, displayString, additionalInfo, position));
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350 } else {
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351 addProposal(proposal, position, displayString, additionalInfo);
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352 }
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353 }
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354 }
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355
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356 /**
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357 * <code>true</code> iff the processor is for the find field.
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358 * <code>false</code> iff the processor is for the replace field.
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359 */
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360 private final bool fIsFind;
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361
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362
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363 /**
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364 * Creates a new completion proposal provider.
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365 *
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366 * @param isFind <code>true</code> if the provider is used for the 'find' field
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367 * <code>false</code> if the provider is used for the 'replace' field
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368 */
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369 public FindReplaceDocumentAdapterContentProposalProvider(bool isFind) {
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370 fIsFind= isFind;
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371 }
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372
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373 /*
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374 * @see dwtx.jface.fieldassist.IContentProposalProvider#getProposals(java.lang.String, int)
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375 */
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376 public IContentProposal [] getProposals(String contents, int position) {
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377 if (fIsFind)
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378 return new ProposalComputer(contents, position).computeFindProposals();
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379 return new ProposalComputer(contents, position).computeReplaceProposals();
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380 }
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381 }
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