Mercurial > projects > dwt-addons
annotate dwtx/jface/text/rules/DefaultDamagerRepairer.d @ 200:eb3414669eb0 default tip
fix for dmd 1.041 and tango 0.99.8
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sat, 28 Mar 2009 03:09:57 +0100 |
| parents | eb98a5cbfd78 |
| children |
| rev | line source |
|---|---|
| 129 | 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 | |
| 131 | 14 |
| 151 | 15 module dwtx.jface.text.rules.DefaultDamagerRepairer; |
| 16 | |
| 131 | 17 import dwtx.jface.text.rules.FastPartitioner; // packageimport |
| 18 import dwtx.jface.text.rules.ITokenScanner; // packageimport | |
| 19 import dwtx.jface.text.rules.Token; // packageimport | |
| 20 import dwtx.jface.text.rules.RuleBasedScanner; // packageimport | |
| 21 import dwtx.jface.text.rules.EndOfLineRule; // packageimport | |
| 22 import dwtx.jface.text.rules.WordRule; // packageimport | |
| 23 import dwtx.jface.text.rules.WhitespaceRule; // packageimport | |
| 24 import dwtx.jface.text.rules.WordPatternRule; // packageimport | |
| 25 import dwtx.jface.text.rules.IPredicateRule; // packageimport | |
| 26 import dwtx.jface.text.rules.DefaultPartitioner; // packageimport | |
| 27 import dwtx.jface.text.rules.NumberRule; // packageimport | |
| 28 import dwtx.jface.text.rules.SingleLineRule; // packageimport | |
| 29 import dwtx.jface.text.rules.PatternRule; // packageimport | |
| 30 import dwtx.jface.text.rules.RuleBasedDamagerRepairer; // packageimport | |
| 31 import dwtx.jface.text.rules.ICharacterScanner; // packageimport | |
| 32 import dwtx.jface.text.rules.IRule; // packageimport | |
| 33 import dwtx.jface.text.rules.IToken; // packageimport | |
| 34 import dwtx.jface.text.rules.IPartitionTokenScanner; // packageimport | |
| 35 import dwtx.jface.text.rules.MultiLineRule; // packageimport | |
| 36 import dwtx.jface.text.rules.RuleBasedPartitioner; // packageimport | |
| 37 import dwtx.jface.text.rules.RuleBasedPartitionScanner; // packageimport | |
| 38 import dwtx.jface.text.rules.BufferedRuleBasedScanner; // packageimport | |
| 39 import dwtx.jface.text.rules.IWhitespaceDetector; // packageimport | |
| 40 | |
| 129 | 41 import dwt.dwthelper.utils; |
| 42 | |
| 43 | |
| 44 | |
| 45 | |
| 46 | |
| 47 import dwt.DWT; | |
| 48 import dwt.custom.StyleRange; | |
| 49 import dwtx.core.runtime.Assert; | |
| 50 import dwtx.jface.text.BadLocationException; | |
| 51 import dwtx.jface.text.DocumentEvent; | |
| 52 import dwtx.jface.text.IDocument; | |
| 53 import dwtx.jface.text.IRegion; | |
| 54 import dwtx.jface.text.ITypedRegion; | |
| 55 import dwtx.jface.text.Region; | |
| 56 import dwtx.jface.text.TextAttribute; | |
| 57 import dwtx.jface.text.TextPresentation; | |
| 58 import dwtx.jface.text.presentation.IPresentationDamager; | |
| 59 import dwtx.jface.text.presentation.IPresentationRepairer; | |
| 60 | |
| 61 | |
| 62 /** | |
| 63 * A standard implementation of a syntax driven presentation damager | |
| 64 * and presentation repairer. It uses a token scanner to scan | |
| 65 * the document and to determine its damage and new text presentation. | |
| 66 * The tokens returned by the scanner are supposed to return text attributes | |
| 67 * as their data. | |
| 68 * | |
| 69 * @see ITokenScanner | |
| 70 * @since 2.0 | |
| 71 */ | |
| 72 public class DefaultDamagerRepairer : IPresentationDamager, IPresentationRepairer { | |
| 73 | |
| 74 | |
| 75 /** The document this object works on */ | |
| 76 protected IDocument fDocument; | |
| 77 /** The scanner it uses */ | |
| 78 protected ITokenScanner fScanner; | |
| 79 /** The default text attribute if non is returned as data by the current token */ | |
| 80 protected TextAttribute fDefaultTextAttribute; | |
| 81 | |
| 82 /** | |
| 83 * Creates a damager/repairer that uses the given scanner and returns the given default | |
| 84 * text attribute if the current token does not carry a text attribute. | |
| 85 * | |
| 86 * @param scanner the token scanner to be used | |
| 87 * @param defaultTextAttribute the text attribute to be returned if non is specified by the current token, | |
| 88 * may not be <code>null</code> | |
| 89 * | |
| 90 * @deprecated use DefaultDamagerRepairer(ITokenScanner) instead | |
| 91 */ | |
|
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changeset
|
92 public this(ITokenScanner scanner, TextAttribute defaultTextAttribute) { |
| 129 | 93 |
| 94 Assert.isNotNull(defaultTextAttribute); | |
| 95 | |
| 96 fScanner= scanner; | |
| 97 fDefaultTextAttribute= defaultTextAttribute; | |
| 98 } | |
| 99 | |
| 100 /** | |
| 101 * Creates a damager/repairer that uses the given scanner. The scanner may not be <code>null</code> | |
| 102 * and is assumed to return only token that carry text attributes. | |
| 103 * | |
| 104 * @param scanner the token scanner to be used, may not be <code>null</code> | |
| 105 */ | |
|
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changeset
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106 public this(ITokenScanner scanner) { |
| 129 | 107 |
| 162 | 108 Assert.isNotNull(cast(Object)scanner); |
| 129 | 109 |
| 110 fScanner= scanner; | |
| 111 fDefaultTextAttribute= new TextAttribute(null); | |
| 112 } | |
| 113 | |
| 114 /* | |
| 115 * @see IPresentationDamager#setDocument(IDocument) | |
| 116 * @see IPresentationRepairer#setDocument(IDocument) | |
| 117 */ | |
| 118 public void setDocument(IDocument document) { | |
| 119 fDocument= document; | |
| 120 } | |
| 121 | |
| 122 | |
| 123 //---- IPresentationDamager | |
| 124 | |
| 125 /** | |
| 126 * Returns the end offset of the line that contains the specified offset or | |
| 127 * if the offset is inside a line delimiter, the end offset of the next line. | |
| 128 * | |
| 129 * @param offset the offset whose line end offset must be computed | |
| 130 * @return the line end offset for the given offset | |
| 131 * @exception BadLocationException if offset is invalid in the current document | |
| 132 */ | |
|
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133 protected int endOfLineOf(int offset) { |
| 129 | 134 |
| 135 IRegion info= fDocument.getLineInformationOfOffset(offset); | |
| 136 if (offset <= info.getOffset() + info.getLength()) | |
| 137 return info.getOffset() + info.getLength(); | |
| 138 | |
| 139 int line= fDocument.getLineOfOffset(offset); | |
| 140 try { | |
| 141 info= fDocument.getLineInformation(line + 1); | |
| 142 return info.getOffset() + info.getLength(); | |
| 143 } catch (BadLocationException x) { | |
| 144 return fDocument.getLength(); | |
| 145 } | |
| 146 } | |
| 147 | |
| 148 /* | |
| 149 * @see IPresentationDamager#getDamageRegion(ITypedRegion, DocumentEvent, bool) | |
| 150 */ | |
| 151 public IRegion getDamageRegion(ITypedRegion partition, DocumentEvent e, bool documentPartitioningChanged) { | |
| 152 | |
| 153 if (!documentPartitioningChanged) { | |
| 154 try { | |
| 155 | |
| 156 IRegion info= fDocument.getLineInformationOfOffset(e.getOffset()); | |
| 157 int start= Math.max(partition.getOffset(), info.getOffset()); | |
| 158 | |
| 159 int end= e.getOffset() + (e.getText() is null ? e.getLength() : e.getText().length()); | |
| 160 | |
| 161 if (info.getOffset() <= end && end <= info.getOffset() + info.getLength()) { | |
| 162 // optimize the case of the same line | |
| 163 end= info.getOffset() + info.getLength(); | |
| 164 } else | |
| 165 end= endOfLineOf(end); | |
| 166 | |
| 167 end= Math.min(partition.getOffset() + partition.getLength(), end); | |
| 168 return new Region(start, end - start); | |
| 169 | |
| 170 } catch (BadLocationException x) { | |
| 171 } | |
| 172 } | |
| 173 | |
| 174 return partition; | |
| 175 } | |
| 176 | |
| 177 //---- IPresentationRepairer | |
| 178 | |
| 179 /* | |
| 180 * @see IPresentationRepairer#createPresentation(TextPresentation, ITypedRegion) | |
| 181 */ | |
| 182 public void createPresentation(TextPresentation presentation, ITypedRegion region) { | |
| 183 | |
| 184 if (fScanner is null) { | |
| 185 // will be removed if deprecated constructor will be removed | |
| 186 addRange(presentation, region.getOffset(), region.getLength(), fDefaultTextAttribute); | |
| 187 return; | |
| 188 } | |
| 189 | |
| 190 int lastStart= region.getOffset(); | |
| 191 int length= 0; | |
| 192 bool firstToken= true; | |
| 193 IToken lastToken= Token.UNDEFINED; | |
| 194 TextAttribute lastAttribute= getTokenTextAttribute(lastToken); | |
| 195 | |
| 196 fScanner.setRange(fDocument, lastStart, region.getLength()); | |
| 197 | |
| 198 while (true) { | |
| 199 IToken token= fScanner.nextToken(); | |
| 200 if (token.isEOF()) | |
| 201 break; | |
| 202 | |
| 203 TextAttribute attribute= getTokenTextAttribute(token); | |
| 204 if (lastAttribute !is null && lastAttribute.equals(attribute)) { | |
| 205 length += fScanner.getTokenLength(); | |
| 206 firstToken= false; | |
| 207 } else { | |
| 208 if (!firstToken) | |
| 209 addRange(presentation, lastStart, length, lastAttribute); | |
| 210 firstToken= false; | |
| 211 lastToken= token; | |
| 212 lastAttribute= attribute; | |
| 213 lastStart= fScanner.getTokenOffset(); | |
| 214 length= fScanner.getTokenLength(); | |
| 215 } | |
| 216 } | |
| 217 | |
| 218 addRange(presentation, lastStart, length, lastAttribute); | |
| 219 } | |
| 220 | |
| 221 /** | |
| 222 * Returns a text attribute encoded in the given token. If the token's | |
| 223 * data is not <code>null</code> and a text attribute it is assumed that | |
| 224 * it is the encoded text attribute. It returns the default text attribute | |
| 225 * if there is no encoded text attribute found. | |
| 226 * | |
| 227 * @param token the token whose text attribute is to be determined | |
| 228 * @return the token's text attribute | |
| 229 */ | |
| 230 protected TextAttribute getTokenTextAttribute(IToken token) { | |
| 231 Object data= token.getData(); | |
| 138 | 232 if ( cast(TextAttribute)data ) |
| 134 | 233 return cast(TextAttribute) data; |
| 129 | 234 return fDefaultTextAttribute; |
| 235 } | |
| 236 | |
| 237 /** | |
| 238 * Adds style information to the given text presentation. | |
| 239 * | |
| 240 * @param presentation the text presentation to be extended | |
| 241 * @param offset the offset of the range to be styled | |
| 242 * @param length the length of the range to be styled | |
| 243 * @param attr the attribute describing the style of the range to be styled | |
| 244 */ | |
| 245 protected void addRange(TextPresentation presentation, int offset, int length, TextAttribute attr) { | |
| 246 if (attr !is null) { | |
| 247 int style= attr.getStyle(); | |
| 248 int fontStyle= style & (DWT.ITALIC | DWT.BOLD | DWT.NORMAL); | |
| 249 StyleRange styleRange= new StyleRange(offset, length, attr.getForeground(), attr.getBackground(), fontStyle); | |
| 250 styleRange.strikeout= (style & TextAttribute.STRIKETHROUGH) !is 0; | |
| 251 styleRange.underline= (style & TextAttribute.UNDERLINE) !is 0; | |
| 252 styleRange.font= attr.getFont(); | |
| 253 presentation.addStyleRange(styleRange); | |
| 254 } | |
| 255 } | |
| 256 } | |
| 257 | |
| 258 |