Mercurial > projects > dwt-addons
annotate dwtx/jface/internal/text/html/HTMLTextPresenter.d @ 162:1a5b8f8129df
...
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Mon, 08 Sep 2008 00:51:37 +0200 |
| parents | 7926b636c282 |
| children |
| rev | line source |
|---|---|
| 129 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2008 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.internal.text.html.HTMLTextPresenter; | |
| 14 | |
| 131 | 15 import dwtx.jface.internal.text.html.HTML2TextReader; // packageimport |
| 16 import dwtx.jface.internal.text.html.HTMLPrinter; // packageimport | |
| 17 import dwtx.jface.internal.text.html.BrowserInformationControl; // packageimport | |
| 18 import dwtx.jface.internal.text.html.SubstitutionTextReader; // packageimport | |
| 19 import dwtx.jface.internal.text.html.BrowserInput; // packageimport | |
| 20 import dwtx.jface.internal.text.html.SingleCharReader; // packageimport | |
| 21 import dwtx.jface.internal.text.html.BrowserInformationControlInput; // packageimport | |
| 22 import dwtx.jface.internal.text.html.HTMLMessages; // packageimport | |
| 23 | |
| 24 | |
| 129 | 25 import dwt.dwthelper.utils; |
|
153
f70d9508c95c
Fix java Collection imports
Frank Benoit <benoit@tionex.de>
parents:
147
diff
changeset
|
26 import dwtx.dwtxhelper.Collection; |
| 162 | 27 import dwtx.dwtxhelper.StringReader; |
| 129 | 28 |
| 29 import dwt.custom.StyleRange; | |
| 30 import dwt.graphics.Drawable; | |
| 31 import dwt.graphics.GC; | |
| 32 import dwt.widgets.Display; | |
| 33 import dwtx.jface.internal.text.link.contentassist.LineBreakingReader; | |
| 34 import dwtx.jface.text.DefaultInformationControl; | |
| 35 import dwtx.jface.text.Region; | |
| 36 import dwtx.jface.text.TextPresentation; | |
| 37 | |
| 38 | |
| 39 /** | |
| 40 * <p> | |
| 41 * Moved into this package from <code>dwtx.jface.internal.text.revisions</code>.</p> | |
| 42 */ | |
| 158 | 43 public class HTMLTextPresenter : DefaultInformationControl_IInformationPresenter, DefaultInformationControl_IInformationPresenterExtension { |
| 129 | 44 |
| 159 | 45 private static String LINE_DELIM_; |
| 46 private static String LINE_DELIM() { | |
| 47 if( LINE_DELIM_ is null ){ | |
| 48 LINE_DELIM_ = System.getProperty("line.separator", "\n"); //$NON-NLS-1$ //$NON-NLS-2$ | |
| 49 } | |
| 50 return LINE_DELIM_; | |
| 51 } | |
| 129 | 52 |
| 53 private int fCounter; | |
| 54 private bool fEnforceUpperLineLimit; | |
| 55 | |
|
133
7d818bd32d63
Fix ctors to this with gvim regexp
Frank Benoit <benoit@tionex.de>
parents:
131
diff
changeset
|
56 public this(bool enforceUpperLineLimit) { |
| 162 | 57 // super(); |
| 129 | 58 fEnforceUpperLineLimit= enforceUpperLineLimit; |
| 59 } | |
| 60 | |
|
133
7d818bd32d63
Fix ctors to this with gvim regexp
Frank Benoit <benoit@tionex.de>
parents:
131
diff
changeset
|
61 public this() { |
| 129 | 62 this(true); |
| 63 } | |
| 64 | |
| 65 protected Reader createReader(String hoverInfo, TextPresentation presentation) { | |
| 66 return new HTML2TextReader(new StringReader(hoverInfo), presentation); | |
| 67 } | |
| 68 | |
| 69 protected void adaptTextPresentation(TextPresentation presentation, int offset, int insertLength) { | |
| 70 | |
| 71 int yoursStart= offset; | |
| 72 int yoursEnd= offset + insertLength -1; | |
| 73 yoursEnd= Math.max(yoursStart, yoursEnd); | |
| 74 | |
| 75 Iterator e= presentation.getAllStyleRangeIterator(); | |
| 76 while (e.hasNext()) { | |
| 77 | |
| 134 | 78 StyleRange range= cast(StyleRange) e.next(); |
| 129 | 79 |
| 80 int myStart= range.start; | |
| 81 int myEnd= range.start + range.length -1; | |
| 82 myEnd= Math.max(myStart, myEnd); | |
| 83 | |
| 84 if (myEnd < yoursStart) | |
| 85 continue; | |
| 86 | |
| 87 if (myStart < yoursStart) | |
| 88 range.length += insertLength; | |
| 89 else | |
| 90 range.start += insertLength; | |
| 91 } | |
| 92 } | |
| 93 | |
| 94 private void append(StringBuffer buffer, String string, TextPresentation presentation) { | |
| 95 | |
| 96 int length= string.length(); | |
| 97 buffer.append(string); | |
| 98 | |
| 99 if (presentation !is null) | |
| 100 adaptTextPresentation(presentation, fCounter, length); | |
| 101 | |
| 102 fCounter += length; | |
| 103 } | |
| 104 | |
| 105 private String getIndent(String line) { | |
| 106 int length= line.length(); | |
| 107 | |
| 108 int i= 0; | |
| 162 | 109 while (i < length && Character.isWhitespace(line.getRelativeCodePoint(i,0))) |
| 110 i += line.getRelativeCodePointOffset(i,1); | |
| 129 | 111 |
| 162 | 112 return (i is length ? line : line.substring(0, i)) ~ " "; //$NON-NLS-1$ |
| 129 | 113 } |
| 114 | |
| 115 /** | |
| 116 * {@inheritDoc} | |
| 158 | 117 * |
| 129 | 118 * @see dwtx.jface.text.DefaultInformationControl.IInformationPresenter#updatePresentation(dwt.widgets.Display, java.lang.String, dwtx.jface.text.TextPresentation, int, int) |
| 119 * @deprecated | |
| 120 */ | |
| 121 public String updatePresentation(Display display, String hoverInfo, TextPresentation presentation, int maxWidth, int maxHeight) { | |
| 134 | 122 return updatePresentation(cast(Drawable)display, hoverInfo, presentation, maxWidth, maxHeight); |
| 129 | 123 } |
| 124 | |
| 125 /* | |
| 126 * @see IHoverInformationPresenterExtension#updatePresentation(Drawable drawable, String, TextPresentation, int, int) | |
| 127 * @since 3.2 | |
| 128 */ | |
| 129 public String updatePresentation(Drawable drawable, String hoverInfo, TextPresentation presentation, int maxWidth, int maxHeight) { | |
| 130 | |
| 131 if (hoverInfo is null) | |
| 132 return null; | |
| 133 | |
| 134 GC gc= new GC(drawable); | |
| 135 try { | |
| 136 | |
| 137 StringBuffer buffer= new StringBuffer(); | |
| 162 | 138 int maxNumberOfLines= cast(int) Math.round(maxHeight / gc.getFontMetrics().getHeight()); |
| 129 | 139 |
| 140 fCounter= 0; | |
| 141 LineBreakingReader reader= new LineBreakingReader(createReader(hoverInfo, presentation), gc, maxWidth); | |
| 142 | |
| 143 bool lastLineFormatted= false; | |
| 144 String lastLineIndent= null; | |
| 145 | |
| 146 String line=reader.readLine(); | |
| 147 bool lineFormatted= reader.isFormattedLine(); | |
| 148 bool firstLineProcessed= false; | |
| 149 | |
| 150 while (line !is null) { | |
| 151 | |
| 152 if (fEnforceUpperLineLimit && maxNumberOfLines <= 0) | |
| 153 break; | |
| 154 | |
| 155 if (firstLineProcessed) { | |
| 156 if (!lastLineFormatted) | |
| 157 append(buffer, LINE_DELIM, null); | |
| 158 else { | |
| 159 append(buffer, LINE_DELIM, presentation); | |
| 160 if (lastLineIndent !is null) | |
| 161 append(buffer, lastLineIndent, presentation); | |
| 162 } | |
| 163 } | |
| 164 | |
| 165 append(buffer, line, null); | |
| 166 firstLineProcessed= true; | |
| 167 | |
| 168 lastLineFormatted= lineFormatted; | |
| 169 if (!lineFormatted) | |
| 170 lastLineIndent= null; | |
| 171 else if (lastLineIndent is null) | |
| 172 lastLineIndent= getIndent(line); | |
| 173 | |
| 174 line= reader.readLine(); | |
| 175 lineFormatted= reader.isFormattedLine(); | |
| 176 | |
| 177 maxNumberOfLines--; | |
| 178 } | |
| 179 | |
| 180 if (line !is null) { | |
| 181 append(buffer, LINE_DELIM, lineFormatted ? presentation : null); | |
| 182 append(buffer, HTMLMessages.getString("HTMLTextPresenter.ellipse"), presentation); //$NON-NLS-1$ | |
| 183 } | |
| 184 | |
| 185 return trim(buffer, presentation); | |
| 186 | |
| 187 } catch (IOException e) { | |
| 188 | |
| 189 // ignore TODO do something else? | |
| 190 return null; | |
| 191 | |
| 192 } finally { | |
| 193 gc.dispose(); | |
| 194 } | |
| 195 } | |
| 196 | |
| 197 private String trim(StringBuffer buffer, TextPresentation presentation) { | |
| 198 | |
| 199 int length= buffer.length(); | |
| 200 | |
| 201 int end= length -1; | |
| 202 | |
| 162 | 203 while (end >= 0 && Character.isWhitespace(buffer.slice().getRelativeCodePoint( end, -1 ))) |
| 204 end += buffer.slice().getRelativeCodePointOffset( end, -1 ); | |
| 205 | |
| 206 if (end <= -1) | |
| 129 | 207 return ""; //$NON-NLS-1$ |
| 208 | |
| 162 | 209 if (end < buffer.slice().getAbsoluteCodePointOffset( length, -1 )) |
| 210 buffer.truncate(buffer.slice().getAbsoluteCodePointOffset( end, 1)); | |
| 129 | 211 else |
| 212 end= length; | |
| 213 | |
| 214 int start= 0; | |
| 162 | 215 while (start < end && Character.isWhitespace(buffer.slice().getRelativeCodePoint(start, 0))) |
| 216 start += buffer.slice().getRelativeCodePointOffset( start, 1 ); | |
| 129 | 217 |
| 162 | 218 buffer.select(0, start); |
| 219 buffer.remove(); | |
| 129 | 220 presentation.setResultWindow(new Region(start, buffer.length())); |
| 221 return buffer.toString(); | |
| 222 } | |
| 223 } | |
| 224 |