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| 1 | /* | ||
| 2 | * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package java.text; | ||
| 27 | |||
| 28 | import java.util.*; | ||
| 29 | import java.text.AttributedCharacterIterator.Attribute; | ||
| 30 | |||
| 31 | /** | ||
| 32 | * An AttributedString holds text and related attribute information. It | ||
| 33 | * may be used as the actual data storage in some cases where a text | ||
| 34 | * reader wants to access attributed text through the AttributedCharacterIterator | ||
| 35 | * interface. | ||
| 36 | * | ||
| 37 | * <p> | ||
| 38 | * An attribute is a key/value pair, identified by the key. No two | ||
| 39 | * attributes on a given character can have the same key. | ||
| 40 | * | ||
| 41 | * <p>The values for an attribute are immutable, or must not be mutated | ||
| 42 | * by clients or storage. They are always passed by reference, and not | ||
| 43 | * cloned. | ||
| 44 | * | ||
| 45 | * @see AttributedCharacterIterator | ||
| 46 | * @see Annotation | ||
| 47 | * @since 1.2 | ||
| 48 | */ | ||
| 49 | |||
| 50 | public class AttributedString { | ||
| 51 | |||
| 52 | // since there are no vectors of int, we have to use arrays. | ||
| 53 | // We allocate them in chunks of 10 elements so we don't have to allocate all the time. | ||
| 54 | private static final int ARRAY_SIZE_INCREMENT = 10; | ||
| 55 | |||
| 56 | // field holding the text | ||
| 57 | String text; | ||
| 58 | |||
| 59 | // fields holding run attribute information | ||
| 60 | // run attributes are organized by run | ||
| 61 | int runArraySize; // current size of the arrays | ||
| 62 | int runCount; // actual number of runs, <= runArraySize | ||
| 63 | int runStarts[]; // start index for each run | ||
| 64 | Vector runAttributes[]; // vector of attribute keys for each run | ||
| 65 | Vector runAttributeValues[]; // parallel vector of attribute values for each run | ||
| 66 | |||
| 67 | /** | ||
| 68 | * Constructs an AttributedString instance with the given | ||
| 69 | * AttributedCharacterIterators. | ||
| 70 | * | ||
| 71 | * @param iterators AttributedCharacterIterators to construct | ||
| 72 | * AttributedString from. | ||
| 73 | * @throws NullPointerException if iterators is null | ||
| 74 | */ | ||
| 75 | AttributedString(AttributedCharacterIterator[] iterators) { | ||
| 76 | if (iterators == null) { | ||
| 77 | throw new NullPointerException("Iterators must not be null"); | ||
| 78 | } | ||
| 79 | if (iterators.length == 0) { | ||
| 80 | text = ""; | ||
| 81 | } | ||
| 82 | else { | ||
| 83 | // Build the String contents | ||
| 84 | StringBuffer buffer = new StringBuffer(); | ||
| 85 | for (int counter = 0; counter < iterators.length; counter++) { | ||
| 86 | appendContents(buffer, iterators[counter]); | ||
| 87 | } | ||
| 88 | |||
| 89 | text = buffer.toString(); | ||
| 90 | |||
| 91 | if (text.length() > 0) { | ||
| 92 | // Determine the runs, creating a new run when the attributes | ||
| 93 | // differ. | ||
| 94 | int offset = 0; | ||
| 95 | Map last = null; | ||
| 96 | |||
| 97 | for (int counter = 0; counter < iterators.length; counter++) { | ||
| 98 | AttributedCharacterIterator iterator = iterators[counter]; | ||
| 99 | int start = iterator.getBeginIndex(); | ||
| 100 | int end = iterator.getEndIndex(); | ||
| 101 | int index = start; | ||
| 102 | |||
| 103 | while (index < end) { | ||
| 104 | iterator.setIndex(index); | ||
| 105 | |||
| 106 | Map attrs = iterator.getAttributes(); | ||
| 107 | |||
| 108 | if (mapsDiffer(last, attrs)) { | ||
| 109 | setAttributes(attrs, index - start + offset); | ||
| 110 | } | ||
| 111 | last = attrs; | ||
| 112 | index = iterator.getRunLimit(); | ||
| 113 | } | ||
| 114 | offset += (end - start); | ||
| 115 | } | ||
| 116 | } | ||
| 117 | } | ||
| 118 | } | ||
| 119 | |||
| 120 | /** | ||
| 121 | * Constructs an AttributedString instance with the given text. | ||
| 122 | * @param text The text for this attributed string. | ||
| 123 | * @exception NullPointerException if <code>text</code> is null. | ||
| 124 | */ | ||
| 125 | public AttributedString(String text) { | ||
| 126 | if (text == null) { | ||
| 127 | throw new NullPointerException(); | ||
| 128 | } | ||
| 129 | this.text = text; | ||
| 130 | } | ||
| 131 | |||
| 132 | /** | ||
| 133 | * Constructs an AttributedString instance with the given text and attributes. | ||
| 134 | * @param text The text for this attributed string. | ||
| 135 | * @param attributes The attributes that apply to the entire string. | ||
| 136 | * @exception NullPointerException if <code>text</code> or | ||
| 137 | * <code>attributes</code> is null. | ||
| 138 | * @exception IllegalArgumentException if the text has length 0 | ||
| 139 | * and the attributes parameter is not an empty Map (attributes | ||
| 140 | * cannot be applied to a 0-length range). | ||
| 141 | */ | ||
| 142 | public AttributedString(String text, | ||
| 143 | Map<? extends Attribute, ?> attributes) | ||
| 144 | { | ||
| 145 | if (text == null || attributes == null) { | ||
| 146 | throw new NullPointerException(); | ||
| 147 | } | ||
| 148 | this.text = text; | ||
| 149 | |||
| 150 | if (text.length() == 0) { | ||
| 151 | if (attributes.isEmpty()) | ||
| 152 | return; | ||
| 153 | throw new IllegalArgumentException("Can't add attribute to 0-length text"); | ||
| 154 | } | ||
| 155 | |||
| 156 | int attributeCount = attributes.size(); | ||
| 157 | if (attributeCount > 0) { | ||
| 158 | createRunAttributeDataVectors(); | ||
| 159 | Vector newRunAttributes = new Vector(attributeCount); | ||
| 160 | Vector newRunAttributeValues = new Vector(attributeCount); | ||
| 161 | runAttributes[0] = newRunAttributes; | ||
| 162 | runAttributeValues[0] = newRunAttributeValues; | ||
| 163 | Iterator iterator = attributes.entrySet().iterator(); | ||
| 164 | while (iterator.hasNext()) { | ||
| 165 | Map.Entry entry = (Map.Entry) iterator.next(); | ||
| 166 | newRunAttributes.addElement(entry.getKey()); | ||
| 167 | newRunAttributeValues.addElement(entry.getValue()); | ||
| 168 | } | ||
| 169 | } | ||
| 170 | } | ||
| 171 | |||
| 172 | /** | ||
| 173 | * Constructs an AttributedString instance with the given attributed | ||
| 174 | * text represented by AttributedCharacterIterator. | ||
| 175 | * @param text The text for this attributed string. | ||
| 176 | * @exception NullPointerException if <code>text</code> is null. | ||
| 177 | */ | ||
| 178 | public AttributedString(AttributedCharacterIterator text) { | ||
| 179 | // If performance is critical, this constructor should be | ||
| 180 | // implemented here rather than invoking the constructor for a | ||
| 181 | // subrange. We can avoid some range checking in the loops. | ||
| 182 | this(text, text.getBeginIndex(), text.getEndIndex(), null); | ||
| 183 | } | ||
| 184 | |||
| 185 | /** | ||
| 186 | * Constructs an AttributedString instance with the subrange of | ||
| 187 | * the given attributed text represented by | ||
| 188 | * AttributedCharacterIterator. If the given range produces an | ||
| 189 | * empty text, all attributes will be discarded. Note that any | ||
| 190 | * attributes wrapped by an Annotation object are discarded for a | ||
| 191 | * subrange of the original attribute range. | ||
| 192 | * | ||
| 193 | * @param text The text for this attributed string. | ||
| 194 | * @param beginIndex Index of the first character of the range. | ||
| 195 | * @param endIndex Index of the character following the last character | ||
| 196 | * of the range. | ||
| 197 | * @exception NullPointerException if <code>text</code> is null. | ||
| 198 | * @exception IllegalArgumentException if the subrange given by | ||
| 199 | * beginIndex and endIndex is out of the text range. | ||
| 200 | * @see java.text.Annotation | ||
| 201 | */ | ||
| 202 | public AttributedString(AttributedCharacterIterator text, | ||
| 203 | int beginIndex, | ||
| 204 | int endIndex) { | ||
| 205 | this(text, beginIndex, endIndex, null); | ||
| 206 | } | ||
| 207 | |||
| 208 | /** | ||
| 209 | * Constructs an AttributedString instance with the subrange of | ||
| 210 | * the given attributed text represented by | ||
| 211 | * AttributedCharacterIterator. Only attributes that match the | ||
| 212 | * given attributes will be incorporated into the instance. If the | ||
| 213 | * given range produces an empty text, all attributes will be | ||
| 214 | * discarded. Note that any attributes wrapped by an Annotation | ||
| 215 | * object are discarded for a subrange of the original attribute | ||
| 216 | * range. | ||
| 217 | * | ||
| 218 | * @param text The text for this attributed string. | ||
| 219 | * @param beginIndex Index of the first character of the range. | ||
| 220 | * @param endIndex Index of the character following the last character | ||
| 221 | * of the range. | ||
| 222 | * @param attributes Specifies attributes to be extracted | ||
| 223 | * from the text. If null is specified, all available attributes will | ||
| 224 | * be used. | ||
| 225 | * @exception NullPointerException if <code>text</code> is null. | ||
| 226 | * @exception IllegalArgumentException if the subrange given by | ||
| 227 | * beginIndex and endIndex is out of the text range. | ||
| 228 | * @see java.text.Annotation | ||
| 229 | */ | ||
| 230 | public AttributedString(AttributedCharacterIterator text, | ||
| 231 | int beginIndex, | ||
| 232 | int endIndex, | ||
| 233 | Attribute[] attributes) { | ||
| 234 | if (text == null) { | ||
| 235 | throw new NullPointerException(); | ||
| 236 | } | ||
| 237 | |||
| 238 | // Validate the given subrange | ||
| 239 | int textBeginIndex = text.getBeginIndex(); | ||
| 240 | int textEndIndex = text.getEndIndex(); | ||
| 241 | if (beginIndex < textBeginIndex || endIndex > textEndIndex || beginIndex > endIndex) | ||
| 242 | throw new IllegalArgumentException("Invalid substring range"); | ||
| 243 | |||
| 244 | // Copy the given string | ||
| 245 | StringBuffer textBuffer = new StringBuffer(); | ||
| 246 | text.setIndex(beginIndex); | ||
| 247 | for (char c = text.current(); text.getIndex() < endIndex; c = text.next()) | ||
| 248 | textBuffer.append(c); | ||
| 249 | this.text = textBuffer.toString(); | ||
| 250 | |||
| 251 | if (beginIndex == endIndex) | ||
| 252 | return; | ||
| 253 | |||
| 254 | // Select attribute keys to be taken care of | ||
| 255 | HashSet keys = new HashSet(); | ||
| 256 | if (attributes == null) { | ||
| 257 | keys.addAll(text.getAllAttributeKeys()); | ||
| 258 | } else { | ||
| 259 | for (int i = 0; i < attributes.length; i++) | ||
| 260 | keys.add(attributes[i]); | ||
| 261 | keys.retainAll(text.getAllAttributeKeys()); | ||
| 262 | } | ||
| 263 | if (keys.isEmpty()) | ||
| 264 | return; | ||
| 265 | |||
| 266 | // Get and set attribute runs for each attribute name. Need to | ||
| 267 | // scan from the top of the text so that we can discard any | ||
| 268 | // Annotation that is no longer applied to a subset text segment. | ||
| 269 | Iterator itr = keys.iterator(); | ||
| 270 | while (itr.hasNext()) { | ||
| 271 | Attribute attributeKey = (Attribute)itr.next(); | ||
| 272 | text.setIndex(textBeginIndex); | ||
| 273 | while (text.getIndex() < endIndex) { | ||
| 274 | int start = text.getRunStart(attributeKey); | ||
| 275 | int limit = text.getRunLimit(attributeKey); | ||
| 276 | Object value = text.getAttribute(attributeKey); | ||
| 277 | |||
| 278 | if (value != null) { | ||
| 279 | if (value instanceof Annotation) { | ||
| 280 | if (start >= beginIndex && limit <= endIndex) { | ||
| 281 | addAttribute(attributeKey, value, start - beginIndex, limit - beginIndex); | ||
| 282 | } else { | ||
| 283 | if (limit > endIndex) | ||
| 284 | break; | ||
| 285 | } | ||
| 286 | } else { | ||
| 287 | // if the run is beyond the given (subset) range, we | ||
| 288 | // don't need to process further. | ||
| 289 | if (start >= endIndex) | ||
| 290 | break; | ||
| 291 | if (limit > beginIndex) { | ||
| 292 | // attribute is applied to any subrange | ||
| 293 | if (start < beginIndex) | ||
| 294 | start = beginIndex; | ||
| 295 | if (limit > endIndex) | ||
| 296 | limit = endIndex; | ||
| 297 | if (start != limit) { | ||
| 298 | addAttribute(attributeKey, value, start - beginIndex, limit - beginIndex); | ||
| 299 | } | ||
| 300 | } | ||
| 301 | } | ||
| 302 | } | ||
| 303 | text.setIndex(limit); | ||
| 304 | } | ||
| 305 | } | ||
| 306 | } | ||
| 307 | |||
| 308 | /** | ||
| 309 | * Adds an attribute to the entire string. | ||
| 310 | * @param attribute the attribute key | ||
| 311 | * @param value the value of the attribute; may be null | ||
| 312 | * @exception NullPointerException if <code>attribute</code> is null. | ||
| 313 | * @exception IllegalArgumentException if the AttributedString has length 0 | ||
| 314 | * (attributes cannot be applied to a 0-length range). | ||
| 315 | */ | ||
| 316 | public void addAttribute(Attribute attribute, Object value) { | ||
| 317 | |||
| 318 | if (attribute == null) { | ||
| 319 | throw new NullPointerException(); | ||
| 320 | } | ||
| 321 | |||
| 322 | int len = length(); | ||
| 323 | if (len == 0) { | ||
| 324 | throw new IllegalArgumentException("Can't add attribute to 0-length text"); | ||
| 325 | } | ||
| 326 | |||
| 327 | addAttributeImpl(attribute, value, 0, len); | ||
| 328 | } | ||
| 329 | |||
| 330 | /** | ||
| 331 | * Adds an attribute to a subrange of the string. | ||
| 332 | * @param attribute the attribute key | ||
| 333 | * @param value The value of the attribute. May be null. | ||
| 334 | * @param beginIndex Index of the first character of the range. | ||
| 335 | * @param endIndex Index of the character following the last character of the range. | ||
| 336 | * @exception NullPointerException if <code>attribute</code> is null. | ||
| 337 | * @exception IllegalArgumentException if beginIndex is less then 0, endIndex is | ||
| 338 | * greater than the length of the string, or beginIndex and endIndex together don't | ||
| 339 | * define a non-empty subrange of the string. | ||
| 340 | */ | ||
| 341 | public void addAttribute(Attribute attribute, Object value, | ||
| 342 | int beginIndex, int endIndex) { | ||
| 343 | |||
| 344 | if (attribute == null) { | ||
| 345 | throw new NullPointerException(); | ||
| 346 | } | ||
| 347 | |||
| 348 | if (beginIndex < 0 || endIndex > length() || beginIndex >= endIndex) { | ||
| 349 | throw new IllegalArgumentException("Invalid substring range"); | ||
| 350 | } | ||
| 351 | |||
| 352 | addAttributeImpl(attribute, value, beginIndex, endIndex); | ||
| 353 | } | ||
| 354 | |||
| 355 | /** | ||
| 356 | * Adds a set of attributes to a subrange of the string. | ||
| 357 | * @param attributes The attributes to be added to the string. | ||
| 358 | * @param beginIndex Index of the first character of the range. | ||
| 359 | * @param endIndex Index of the character following the last | ||
| 360 | * character of the range. | ||
| 361 | * @exception NullPointerException if <code>attributes</code> is null. | ||
| 362 | * @exception IllegalArgumentException if beginIndex is less then | ||
| 363 | * 0, endIndex is greater than the length of the string, or | ||
| 364 | * beginIndex and endIndex together don't define a non-empty | ||
| 365 | * subrange of the string and the attributes parameter is not an | ||
| 366 | * empty Map. | ||
| 367 | */ | ||
| 368 | public void addAttributes(Map<? extends Attribute, ?> attributes, | ||
| 369 | int beginIndex, int endIndex) | ||
| 370 | { | ||
| 371 | if (attributes == null) { | ||
| 372 | throw new NullPointerException(); | ||
| 373 | } | ||
| 374 | |||
| 375 | if (beginIndex < 0 || endIndex > length() || beginIndex > endIndex) { | ||
| 376 | throw new IllegalArgumentException("Invalid substring range"); | ||
| 377 | } | ||
| 378 | if (beginIndex == endIndex) { | ||
| 379 | if (attributes.isEmpty()) | ||
| 380 | return; | ||
| 381 | throw new IllegalArgumentException("Can't add attribute to 0-length text"); | ||
| 382 | } | ||
| 383 | |||
| 384 | // make sure we have run attribute data vectors | ||
| 385 | if (runCount == 0) { | ||
| 386 | createRunAttributeDataVectors(); | ||
| 387 | } | ||
| 388 | |||
| 389 | // break up runs if necessary | ||
| 390 | int beginRunIndex = ensureRunBreak(beginIndex); | ||
| 391 | int endRunIndex = ensureRunBreak(endIndex); | ||
| 392 | |||
| 393 | Iterator iterator = attributes.entrySet().iterator(); | ||
| 394 | while (iterator.hasNext()) { | ||
| 395 | Map.Entry entry = (Map.Entry) iterator.next(); | ||
| 396 | addAttributeRunData((Attribute) entry.getKey(), entry.getValue(), beginRunIndex, endRunIndex); | ||
| 397 | } | ||
| 398 | } | ||
| 399 | |||
| 400 | private synchronized void addAttributeImpl(Attribute attribute, Object value, | ||
| 401 | int beginIndex, int endIndex) { | ||
| 402 | |||
| 403 | // make sure we have run attribute data vectors | ||
| 404 | if (runCount == 0) { | ||
| 405 | createRunAttributeDataVectors(); | ||
| 406 | } | ||
| 407 | |||
| 408 | // break up runs if necessary | ||
| 409 | int beginRunIndex = ensureRunBreak(beginIndex); | ||
| 410 | int endRunIndex = ensureRunBreak(endIndex); | ||
| 411 | |||
| 412 | addAttributeRunData(attribute, value, beginRunIndex, endRunIndex); | ||
| 413 | } | ||
| 414 | |||
| 415 | private final void createRunAttributeDataVectors() { | ||
| 416 | // use temporary variables so things remain consistent in case of an exception | ||
| 417 | int newRunStarts[] = new int[ARRAY_SIZE_INCREMENT]; | ||
| 418 | Vector newRunAttributes[] = new Vector[ARRAY_SIZE_INCREMENT]; | ||
| 419 | Vector newRunAttributeValues[] = new Vector[ARRAY_SIZE_INCREMENT]; | ||
| 420 | runStarts = newRunStarts; | ||
| 421 | runAttributes = newRunAttributes; | ||
| 422 | runAttributeValues = newRunAttributeValues; | ||
| 423 | runArraySize = ARRAY_SIZE_INCREMENT; | ||
| 424 | runCount = 1; // assume initial run starting at index 0 | ||
| 425 | } | ||
| 426 | |||
| 427 | // ensure there's a run break at offset, return the index of the run | ||
| 428 | private final int ensureRunBreak(int offset) { | ||
| 429 | return ensureRunBreak(offset, true); | ||
| 430 | } | ||
| 431 | |||
| 432 | /** | ||
| 433 | * Ensures there is a run break at offset, returning the index of | ||
| 434 | * the run. If this results in splitting a run, two things can happen: | ||
| 435 | * <ul> | ||
| 436 | * <li>If copyAttrs is true, the attributes from the existing run | ||
| 437 | * will be placed in both of the newly created runs. | ||
| 438 | * <li>If copyAttrs is false, the attributes from the existing run | ||
| 439 | * will NOT be copied to the run to the right (>= offset) of the break, | ||
| 440 | * but will exist on the run to the left (< offset). | ||
| 441 | * </ul> | ||
| 442 | */ | ||
| 443 | private final int ensureRunBreak(int offset, boolean copyAttrs) { | ||
| 444 | if (offset == length()) { | ||
| 445 | return runCount; | ||
| 446 | } | ||
| 447 | |||
| 448 | // search for the run index where this offset should be | ||
| 449 | int runIndex = 0; | ||
| 450 | while (runIndex < runCount && runStarts[runIndex] < offset) { | ||
| 451 | runIndex++; | ||
| 452 | } | ||
| 453 | |||
| 454 | // if the offset is at a run start already, we're done | ||
| 455 | if (runIndex < runCount && runStarts[runIndex] == offset) { | ||
| 456 | return runIndex; | ||
| 457 | } | ||
| 458 | |||
| 459 | // we'll have to break up a run | ||
| 460 | // first, make sure we have enough space in our arrays | ||
| 461 | if (runCount == runArraySize) { | ||
| 462 | int newArraySize = runArraySize + ARRAY_SIZE_INCREMENT; | ||
| 463 | int newRunStarts[] = new int[newArraySize]; | ||
| 464 | Vector newRunAttributes[] = new Vector[newArraySize]; | ||
| 465 | Vector newRunAttributeValues[] = new Vector[newArraySize]; | ||
| 466 | for (int i = 0; i < runArraySize; i++) { | ||
| 467 | newRunStarts[i] = runStarts[i]; | ||
| 468 | newRunAttributes[i] = runAttributes[i]; | ||
| 469 | newRunAttributeValues[i] = runAttributeValues[i]; | ||
| 470 | } | ||
| 471 | runStarts = newRunStarts; | ||
| 472 | runAttributes = newRunAttributes; | ||
| 473 | runAttributeValues = newRunAttributeValues; | ||
| 474 | runArraySize = newArraySize; | ||
| 475 | } | ||
| 476 | |||
| 477 | // make copies of the attribute information of the old run that the new one used to be part of | ||
| 478 | // use temporary variables so things remain consistent in case of an exception | ||
| 479 | Vector newRunAttributes = null; | ||
| 480 | Vector newRunAttributeValues = null; | ||
| 481 | |||
| 482 | if (copyAttrs) { | ||
| 483 | Vector oldRunAttributes = runAttributes[runIndex - 1]; | ||
| 484 | Vector oldRunAttributeValues = runAttributeValues[runIndex - 1]; | ||
| 485 | if (oldRunAttributes != null) { | ||
| 486 | newRunAttributes = (Vector) oldRunAttributes.clone(); | ||
| 487 | } | ||
| 488 | if (oldRunAttributeValues != null) { | ||
| 489 | newRunAttributeValues = (Vector) oldRunAttributeValues.clone(); | ||
| 490 | } | ||
| 491 | } | ||
| 492 | |||
| 493 | // now actually break up the run | ||
| 494 | runCount++; | ||
| 495 | for (int i = runCount - 1; i > runIndex; i--) { | ||
| 496 | runStarts[i] = runStarts[i - 1]; | ||
| 497 | runAttributes[i] = runAttributes[i - 1]; | ||
| 498 | runAttributeValues[i] = runAttributeValues[i - 1]; | ||
| 499 | } | ||
| 500 | runStarts[runIndex] = offset; | ||
| 501 | runAttributes[runIndex] = newRunAttributes; | ||
| 502 | runAttributeValues[runIndex] = newRunAttributeValues; | ||
| 503 | |||
| 504 | return runIndex; | ||
| 505 | } | ||
| 506 | |||
| 507 | // add the attribute attribute/value to all runs where beginRunIndex <= runIndex < endRunIndex | ||
| 508 | private void addAttributeRunData(Attribute attribute, Object value, | ||
| 509 | int beginRunIndex, int endRunIndex) { | ||
| 510 | |||
| 511 | for (int i = beginRunIndex; i < endRunIndex; i++) { | ||
| 512 | int keyValueIndex = -1; // index of key and value in our vectors; assume we don't have an entry yet | ||
| 513 | if (runAttributes[i] == null) { | ||
| 514 | Vector newRunAttributes = new Vector(); | ||
| 515 | Vector newRunAttributeValues = new Vector(); | ||
| 516 | runAttributes[i] = newRunAttributes; | ||
| 517 | runAttributeValues[i] = newRunAttributeValues; | ||
| 518 | } else { | ||
| 519 | // check whether we have an entry already | ||
| 520 | keyValueIndex = runAttributes[i].indexOf(attribute); | ||
| 521 | } | ||
| 522 | |||
| 523 | if (keyValueIndex == -1) { | ||
| 524 | // create new entry | ||
| 525 | int oldSize = runAttributes[i].size(); | ||
| 526 | runAttributes[i].addElement(attribute); | ||
| 527 | try { | ||
| 528 | runAttributeValues[i].addElement(value); | ||
| 529 | } | ||
| 530 | catch (Exception e) { | ||
| 531 | runAttributes[i].setSize(oldSize); | ||
| 532 | runAttributeValues[i].setSize(oldSize); | ||
| 533 | } | ||
| 534 | } else { | ||
| 535 | // update existing entry | ||
| 536 | runAttributeValues[i].set(keyValueIndex, value); | ||
| 537 | } | ||
| 538 | } | ||
| 539 | } | ||
| 540 | |||
| 541 | /** | ||
| 542 | * Creates an AttributedCharacterIterator instance that provides access to the entire contents of | ||
| 543 | * this string. | ||
| 544 | * | ||
| 545 | * @return An iterator providing access to the text and its attributes. | ||
| 546 | */ | ||
| 547 | public AttributedCharacterIterator getIterator() { | ||
| 548 | return getIterator(null, 0, length()); | ||
| 549 | } | ||
| 550 | |||
| 551 | /** | ||
| 552 | * Creates an AttributedCharacterIterator instance that provides access to | ||
| 553 | * selected contents of this string. | ||
| 554 | * Information about attributes not listed in attributes that the | ||
| 555 | * implementor may have need not be made accessible through the iterator. | ||
| 556 | * If the list is null, all available attribute information should be made | ||
| 557 | * accessible. | ||
| 558 | * | ||
| 559 | * @param attributes a list of attributes that the client is interested in | ||
| 560 | * @return an iterator providing access to the entire text and its selected attributes | ||
| 561 | */ | ||
| 562 | public AttributedCharacterIterator getIterator(Attribute[] attributes) { | ||
| 563 | return getIterator(attributes, 0, length()); | ||
| 564 | } | ||
| 565 | |||
| 566 | /** | ||
| 567 | * Creates an AttributedCharacterIterator instance that provides access to | ||
| 568 | * selected contents of this string. | ||
| 569 | * Information about attributes not listed in attributes that the | ||
| 570 | * implementor may have need not be made accessible through the iterator. | ||
| 571 | * If the list is null, all available attribute information should be made | ||
| 572 | * accessible. | ||
| 573 | * | ||
| 574 | * @param attributes a list of attributes that the client is interested in | ||
| 575 | * @param beginIndex the index of the first character | ||
| 576 | * @param endIndex the index of the character following the last character | ||
| 577 | * @return an iterator providing access to the text and its attributes | ||
| 578 | * @exception IllegalArgumentException if beginIndex is less then 0, | ||
| 579 | * endIndex is greater than the length of the string, or beginIndex is | ||
| 580 | * greater than endIndex. | ||
| 581 | */ | ||
| 582 | public AttributedCharacterIterator getIterator(Attribute[] attributes, int beginIndex, int endIndex) { | ||
| 583 | return new AttributedStringIterator(attributes, beginIndex, endIndex); | ||
| 584 | } | ||
| 585 | |||
| 586 | // all (with the exception of length) reading operations are private, | ||
| 587 | // since AttributedString instances are accessed through iterators. | ||
| 588 | |||
| 589 | // length is package private so that CharacterIteratorFieldDelegate can | ||
| 590 | // access it without creating an AttributedCharacterIterator. | ||
| 591 | int length() { | ||
| 592 | return text.length(); | ||
| 593 | } | ||
| 594 | |||
| 595 | private char charAt(int index) { | ||
| 596 | return text.charAt(index); | ||
| 597 | } | ||
| 598 | |||
| 599 | private synchronized Object getAttribute(Attribute attribute, int runIndex) { | ||
| 600 | Vector currentRunAttributes = runAttributes[runIndex]; | ||
| 601 | Vector currentRunAttributeValues = runAttributeValues[runIndex]; | ||
| 602 | if (currentRunAttributes == null) { | ||
| 603 | return null; | ||
| 604 | } | ||
| 605 | int attributeIndex = currentRunAttributes.indexOf(attribute); | ||
| 606 | if (attributeIndex != -1) { | ||
| 607 | return currentRunAttributeValues.elementAt(attributeIndex); | ||
| 608 | } | ||
| 609 | else { | ||
| 610 | return null; | ||
| 611 | } | ||
| 612 | } | ||
| 613 | |||
| 614 | // gets an attribute value, but returns an annotation only if it's range does not extend outside the range beginIndex..endIndex | ||
| 615 | private Object getAttributeCheckRange(Attribute attribute, int runIndex, int beginIndex, int endIndex) { | ||
| 616 | Object value = getAttribute(attribute, runIndex); | ||
| 617 | if (value instanceof Annotation) { | ||
| 618 | // need to check whether the annotation's range extends outside the iterator's range | ||
| 619 | if (beginIndex > 0) { | ||
| 620 | int currIndex = runIndex; | ||
| 621 | int runStart = runStarts[currIndex]; | ||
| 622 | while (runStart >= beginIndex && | ||
| 623 | valuesMatch(value, getAttribute(attribute, currIndex - 1))) { | ||
| 624 | currIndex--; | ||
| 625 | runStart = runStarts[currIndex]; | ||
| 626 | } | ||
| 627 | if (runStart < beginIndex) { | ||
| 628 | // annotation's range starts before iterator's range | ||
| 629 | return null; | ||
| 630 | } | ||
| 631 | } | ||
| 632 | int textLength = length(); | ||
| 633 | if (endIndex < textLength) { | ||
| 634 | int currIndex = runIndex; | ||
| 635 | int runLimit = (currIndex < runCount - 1) ? runStarts[currIndex + 1] : textLength; | ||
| 636 | while (runLimit <= endIndex && | ||
| 637 | valuesMatch(value, getAttribute(attribute, currIndex + 1))) { | ||
| 638 | currIndex++; | ||
| 639 | runLimit = (currIndex < runCount - 1) ? runStarts[currIndex + 1] : textLength; | ||
| 640 | } | ||
| 641 | if (runLimit > endIndex) { | ||
| 642 | // annotation's range ends after iterator's range | ||
| 643 | return null; | ||
| 644 | } | ||
| 645 | } | ||
| 646 | // annotation's range is subrange of iterator's range, | ||
| 647 | // so we can return the value | ||
| 648 | } | ||
| 649 | return value; | ||
| 650 | } | ||
| 651 | |||
| 652 | // returns whether all specified attributes have equal values in the runs with the given indices | ||
| 653 | private boolean attributeValuesMatch(Set attributes, int runIndex1, int runIndex2) { | ||
| 654 | Iterator iterator = attributes.iterator(); | ||
| 655 | while (iterator.hasNext()) { | ||
| 656 | Attribute key = (Attribute) iterator.next(); | ||
| 657 | if (!valuesMatch(getAttribute(key, runIndex1), getAttribute(key, runIndex2))) { | ||
| 658 | return false; | ||
| 659 | } | ||
| 660 | } | ||
| 661 | return true; | ||
| 662 | } | ||
| 663 | |||
| 664 | // returns whether the two objects are either both null or equal | ||
| 665 | private final static boolean valuesMatch(Object value1, Object value2) { | ||
| 666 | if (value1 == null) { | ||
| 667 | return value2 == null; | ||
| 668 | } else { | ||
| 669 | return value1.equals(value2); | ||
| 670 | } | ||
| 671 | } | ||
| 672 | |||
| 673 | /** | ||
| 674 | * Appends the contents of the CharacterIterator iterator into the | ||
| 675 | * StringBuffer buf. | ||
| 676 | */ | ||
| 677 | private final void appendContents(StringBuffer buf, | ||
| 678 | CharacterIterator iterator) { | ||
| 679 | int index = iterator.getBeginIndex(); | ||
| 680 | int end = iterator.getEndIndex(); | ||
| 681 | |||
| 682 | while (index < end) { | ||
| 683 | iterator.setIndex(index++); | ||
| 684 | buf.append(iterator.current()); | ||
| 685 | } | ||
| 686 | } | ||
| 687 | |||
| 688 | /** | ||
| 689 | * Sets the attributes for the range from offset to the next run break | ||
| 690 | * (typically the end of the text) to the ones specified in attrs. | ||
| 691 | * This is only meant to be called from the constructor! | ||
| 692 | */ | ||
| 693 | private void setAttributes(Map attrs, int offset) { | ||
| 694 | if (runCount == 0) { | ||
| 695 | createRunAttributeDataVectors(); | ||
| 696 | } | ||
| 697 | |||
| 698 | int index = ensureRunBreak(offset, false); | ||
| 699 | int size; | ||
| 700 | |||
| 701 | if (attrs != null && (size = attrs.size()) > 0) { | ||
| 702 | Vector runAttrs = new Vector(size); | ||
| 703 | Vector runValues = new Vector(size); | ||
| 704 | Iterator iterator = attrs.entrySet().iterator(); | ||
| 705 | |||
| 706 | while (iterator.hasNext()) { | ||
| 707 | Map.Entry entry = (Map.Entry)iterator.next(); | ||
| 708 | |||
| 709 | runAttrs.add(entry.getKey()); | ||
| 710 | runValues.add(entry.getValue()); | ||
| 711 | } | ||
| 712 | runAttributes[index] = runAttrs; | ||
| 713 | runAttributeValues[index] = runValues; | ||
| 714 | } | ||
| 715 | } | ||
| 716 | |||
| 717 | /** | ||
| 718 | * Returns true if the attributes specified in last and attrs differ. | ||
| 719 | */ | ||
| 720 | private static boolean mapsDiffer(Map last, Map attrs) { | ||
| 721 | if (last == null) { | ||
| 722 | return (attrs != null && attrs.size() > 0); | ||
| 723 | } | ||
| 724 | return (!last.equals(attrs)); | ||
| 725 | } | ||
| 726 | |||
| 727 | |||
| 728 | // the iterator class associated with this string class | ||
| 729 | |||
| 730 | final private class AttributedStringIterator implements AttributedCharacterIterator { | ||
| 731 | |||
| 732 | // note on synchronization: | ||
| 733 | // we don't synchronize on the iterator, assuming that an iterator is only used in one thread. | ||
| 734 | // we do synchronize access to the AttributedString however, since it's more likely to be shared between threads. | ||
| 735 | |||
| 736 | // start and end index for our iteration | ||
| 737 | private int beginIndex; | ||
| 738 | private int endIndex; | ||
| 739 | |||
| 740 | // attributes that our client is interested in | ||
| 741 | private Attribute[] relevantAttributes; | ||
| 742 | |||
| 743 | // the current index for our iteration | ||
| 744 | // invariant: beginIndex <= currentIndex <= endIndex | ||
| 745 | private int currentIndex; | ||
| 746 | |||
| 747 | // information about the run that includes currentIndex | ||
| 748 | private int currentRunIndex; | ||
| 749 | private int currentRunStart; | ||
| 750 | private int currentRunLimit; | ||
| 751 | |||
| 752 | // constructor | ||
| 753 | AttributedStringIterator(Attribute[] attributes, int beginIndex, int endIndex) { | ||
| 754 | |||
| 755 | if (beginIndex < 0 || beginIndex > endIndex || endIndex > length()) { | ||
| 756 | throw new IllegalArgumentException("Invalid substring range"); | ||
| 757 | } | ||
| 758 | |||
| 759 | this.beginIndex = beginIndex; | ||
| 760 | this.endIndex = endIndex; | ||
| 761 | this.currentIndex = beginIndex; | ||
| 762 | updateRunInfo(); | ||
| 763 | if (attributes != null) { | ||
| 764 | relevantAttributes = (Attribute[]) attributes.clone(); | ||
| 765 | } | ||
| 766 | } | ||
| 767 | |||
| 768 | // Object methods. See documentation in that class. | ||
| 769 | |||
| 770 | public boolean equals(Object obj) { | ||
| 771 | if (this == obj) { | ||
| 772 | return true; | ||
| 773 | } | ||
| 774 | if (!(obj instanceof AttributedStringIterator)) { | ||
| 775 | return false; | ||
| 776 | } | ||
| 777 | |||
| 778 | AttributedStringIterator that = (AttributedStringIterator) obj; | ||
| 779 | |||
| 780 | if (AttributedString.this != that.getString()) | ||
| 781 | return false; | ||
| 782 | if (currentIndex != that.currentIndex || beginIndex != that.beginIndex || endIndex != that.endIndex) | ||
| 783 | return false; | ||
| 784 | return true; | ||
| 785 | } | ||
| 786 | |||
| 787 | public int hashCode() { | ||
| 788 | return text.hashCode() ^ currentIndex ^ beginIndex ^ endIndex; | ||
| 789 | } | ||
| 790 | |||
| 791 | public Object clone() { | ||
| 792 | try { | ||
| 793 | AttributedStringIterator other = (AttributedStringIterator) super.clone(); | ||
| 794 | return other; | ||
| 795 | } | ||
| 796 | catch (CloneNotSupportedException e) { | ||
| 797 | throw new InternalError(); | ||
| 798 | } | ||
| 799 | } | ||
| 800 | |||
| 801 | // CharacterIterator methods. See documentation in that interface. | ||
| 802 | |||
| 803 | public char first() { | ||
| 804 | return internalSetIndex(beginIndex); | ||
| 805 | } | ||
| 806 | |||
| 807 | public char last() { | ||
| 808 | if (endIndex == beginIndex) { | ||
| 809 | return internalSetIndex(endIndex); | ||
| 810 | } else { | ||
| 811 | return internalSetIndex(endIndex - 1); | ||
| 812 | } | ||
| 813 | } | ||
| 814 | |||
| 815 | public char current() { | ||
| 816 | if (currentIndex == endIndex) { | ||
| 817 | return DONE; | ||
| 818 | } else { | ||
| 819 | return charAt(currentIndex); | ||
| 820 | } | ||
| 821 | } | ||
| 822 | |||
| 823 | public char next() { | ||
| 824 | if (currentIndex < endIndex) { | ||
| 825 | return internalSetIndex(currentIndex + 1); | ||
| 826 | } | ||
| 827 | else { | ||
| 828 | return DONE; | ||
| 829 | } | ||
| 830 | } | ||
| 831 | |||
| 832 | public char previous() { | ||
| 833 | if (currentIndex > beginIndex) { | ||
| 834 | return internalSetIndex(currentIndex - 1); | ||
| 835 | } | ||
| 836 | else { | ||
| 837 | return DONE; | ||
| 838 | } | ||
| 839 | } | ||
| 840 | |||
| 841 | public char setIndex(int position) { | ||
| 842 | if (position < beginIndex || position > endIndex) | ||
| 843 | throw new IllegalArgumentException("Invalid index"); | ||
| 844 | return internalSetIndex(position); | ||
| 845 | } | ||
| 846 | |||
| 847 | public int getBeginIndex() { | ||
| 848 | return beginIndex; | ||
| 849 | } | ||
| 850 | |||
| 851 | public int getEndIndex() { | ||
| 852 | return endIndex; | ||
| 853 | } | ||
| 854 | |||
| 855 | public int getIndex() { | ||
| 856 | return currentIndex; | ||
| 857 | } | ||
| 858 | |||
| 859 | // AttributedCharacterIterator methods. See documentation in that interface. | ||
| 860 | |||
| 861 | public int getRunStart() { | ||
| 862 | return currentRunStart; | ||
| 863 | } | ||
| 864 | |||
| 865 | public int getRunStart(Attribute attribute) { | ||
| 866 | if (currentRunStart == beginIndex || currentRunIndex == -1) { | ||
| 867 | return currentRunStart; | ||
| 868 | } else { | ||
| 869 | Object value = getAttribute(attribute); | ||
| 870 | int runStart = currentRunStart; | ||
| 871 | int runIndex = currentRunIndex; | ||
| 872 | while (runStart > beginIndex && | ||
| 873 | valuesMatch(value, AttributedString.this.getAttribute(attribute, runIndex - 1))) { | ||
| 874 | runIndex--; | ||
| 875 | runStart = runStarts[runIndex]; | ||
| 876 | } | ||
| 877 | if (runStart < beginIndex) { | ||
| 878 | runStart = beginIndex; | ||
| 879 | } | ||
| 880 | return runStart; | ||
| 881 | } | ||
| 882 | } | ||
| 883 | |||
| 884 | public int getRunStart(Set<? extends Attribute> attributes) { | ||
| 885 | if (currentRunStart == beginIndex || currentRunIndex == -1) { | ||
| 886 | return currentRunStart; | ||
| 887 | } else { | ||
| 888 | int runStart = currentRunStart; | ||
| 889 | int runIndex = currentRunIndex; | ||
| 890 | while (runStart > beginIndex && | ||
| 891 | AttributedString.this.attributeValuesMatch(attributes, currentRunIndex, runIndex - 1)) { | ||
| 892 | runIndex--; | ||
| 893 | runStart = runStarts[runIndex]; | ||
| 894 | } | ||
| 895 | if (runStart < beginIndex) { | ||
| 896 | runStart = beginIndex; | ||
| 897 | } | ||
| 898 | return runStart; | ||
| 899 | } | ||
| 900 | } | ||
| 901 | |||
| 902 | public int getRunLimit() { | ||
| 903 | return currentRunLimit; | ||
| 904 | } | ||
| 905 | |||
| 906 | public int getRunLimit(Attribute attribute) { | ||
| 907 | if (currentRunLimit == endIndex || currentRunIndex == -1) { | ||
| 908 | return currentRunLimit; | ||
| 909 | } else { | ||
| 910 | Object value = getAttribute(attribute); | ||
| 911 | int runLimit = currentRunLimit; | ||
| 912 | int runIndex = currentRunIndex; | ||
| 913 | while (runLimit < endIndex && | ||
| 914 | valuesMatch(value, AttributedString.this.getAttribute(attribute, runIndex + 1))) { | ||
| 915 | runIndex++; | ||
| 916 | runLimit = runIndex < runCount - 1 ? runStarts[runIndex + 1] : endIndex; | ||
| 917 | } | ||
| 918 | if (runLimit > endIndex) { | ||
| 919 | runLimit = endIndex; | ||
| 920 | } | ||
| 921 | return runLimit; | ||
| 922 | } | ||
| 923 | } | ||
| 924 | |||
| 925 | public int getRunLimit(Set<? extends Attribute> attributes) { | ||
| 926 | if (currentRunLimit == endIndex || currentRunIndex == -1) { | ||
| 927 | return currentRunLimit; | ||
| 928 | } else { | ||
| 929 | int runLimit = currentRunLimit; | ||
| 930 | int runIndex = currentRunIndex; | ||
| 931 | while (runLimit < endIndex && | ||
| 932 | AttributedString.this.attributeValuesMatch(attributes, currentRunIndex, runIndex + 1)) { | ||
| 933 | runIndex++; | ||
| 934 | runLimit = runIndex < runCount - 1 ? runStarts[runIndex + 1] : endIndex; | ||
| 935 | } | ||
| 936 | if (runLimit > endIndex) { | ||
| 937 | runLimit = endIndex; | ||
| 938 | } | ||
| 939 | return runLimit; | ||
| 940 | } | ||
| 941 | } | ||
| 942 | |||
| 943 | public Map<Attribute,Object> getAttributes() { | ||
| 944 | if (runAttributes == null || currentRunIndex == -1 || runAttributes[currentRunIndex] == null) { | ||
| 945 | // ??? would be nice to return null, but current spec doesn't allow it | ||
| 946 | // returning Hashtable saves AttributeMap from dealing with emptiness | ||
| 947 | return new Hashtable(); | ||
| 948 | } | ||
| 949 | return new AttributeMap(currentRunIndex, beginIndex, endIndex); | ||
| 950 | } | ||
| 951 | |||
| 952 | public Set<Attribute> getAllAttributeKeys() { | ||
| 953 | // ??? This should screen out attribute keys that aren't relevant to the client | ||
| 954 | if (runAttributes == null) { | ||
| 955 | // ??? would be nice to return null, but current spec doesn't allow it | ||
| 956 | // returning HashSet saves us from dealing with emptiness | ||
| 957 | return new HashSet(); | ||
| 958 | } | ||
| 959 | synchronized (AttributedString.this) { | ||
| 960 | // ??? should try to create this only once, then update if necessary, | ||
| 961 | // and give callers read-only view | ||
| 962 | Set keys = new HashSet(); | ||
| 963 | int i = 0; | ||
| 964 | while (i < runCount) { | ||
| 965 | if (runStarts[i] < endIndex && (i == runCount - 1 || runStarts[i + 1] > beginIndex)) { | ||
| 966 | Vector currentRunAttributes = runAttributes[i]; | ||
| 967 | if (currentRunAttributes != null) { | ||
| 968 | int j = currentRunAttributes.size(); | ||
| 969 | while (j-- > 0) { | ||
| 970 | keys.add(currentRunAttributes.get(j)); | ||
| 971 | } | ||
| 972 | } | ||
| 973 | } | ||
| 974 | i++; | ||
| 975 | } | ||
| 976 | return keys; | ||
| 977 | } | ||
| 978 | } | ||
| 979 | |||
| 980 | public Object getAttribute(Attribute attribute) { | ||
| 981 | int runIndex = currentRunIndex; | ||
| 982 | if (runIndex < 0) { | ||
| 983 | return null; | ||
| 984 | } | ||
| 985 | return AttributedString.this.getAttributeCheckRange(attribute, runIndex, beginIndex, endIndex); | ||
| 986 | } | ||
| 987 | |||
| 988 | // internally used methods | ||
| 989 | |||
| 990 | private AttributedString getString() { | ||
| 991 | return AttributedString.this; | ||
| 992 | } | ||
| 993 | |||
| 994 | // set the current index, update information about the current run if necessary, | ||
| 995 | // return the character at the current index | ||
| 996 | private char internalSetIndex(int position) { | ||
| 997 | currentIndex = position; | ||
| 998 | if (position < currentRunStart || position >= currentRunLimit) { | ||
| 999 | updateRunInfo(); | ||
| 1000 | } | ||
| 1001 | if (currentIndex == endIndex) { | ||
| 1002 | return DONE; | ||
| 1003 | } else { | ||
| 1004 | return charAt(position); | ||
| 1005 | } | ||
| 1006 | } | ||
| 1007 | |||
| 1008 | // update the information about the current run | ||
| 1009 | private void updateRunInfo() { | ||
| 1010 | if (currentIndex == endIndex) { | ||
| 1011 | currentRunStart = currentRunLimit = endIndex; | ||
| 1012 | currentRunIndex = -1; | ||
| 1013 | } else { | ||
| 1014 | synchronized (AttributedString.this) { | ||
| 1015 | int runIndex = -1; | ||
| 1016 | while (runIndex < runCount - 1 && runStarts[runIndex + 1] <= currentIndex) | ||
| 1017 | runIndex++; | ||
| 1018 | currentRunIndex = runIndex; | ||
| 1019 | if (runIndex >= 0) { | ||
| 1020 | currentRunStart = runStarts[runIndex]; | ||
| 1021 | if (currentRunStart < beginIndex) | ||
| 1022 | currentRunStart = beginIndex; | ||
| 1023 | } | ||
| 1024 | else { | ||
| 1025 | currentRunStart = beginIndex; | ||
| 1026 | } | ||
| 1027 | if (runIndex < runCount - 1) { | ||
| 1028 | currentRunLimit = runStarts[runIndex + 1]; | ||
| 1029 | if (currentRunLimit > endIndex) | ||
| 1030 | currentRunLimit = endIndex; | ||
| 1031 | } | ||
| 1032 | else { | ||
| 1033 | currentRunLimit = endIndex; | ||
| 1034 | } | ||
| 1035 | } | ||
| 1036 | } | ||
| 1037 | } | ||
| 1038 | |||
| 1039 | } | ||
| 1040 | |||
| 1041 | // the map class associated with this string class, giving access to the attributes of one run | ||
| 1042 | |||
| 1043 | final private class AttributeMap extends AbstractMap<Attribute,Object> { | ||
| 1044 | |||
| 1045 | int runIndex; | ||
| 1046 | int beginIndex; | ||
| 1047 | int endIndex; | ||
| 1048 | |||
| 1049 | AttributeMap(int runIndex, int beginIndex, int endIndex) { | ||
| 1050 | this.runIndex = runIndex; | ||
| 1051 | this.beginIndex = beginIndex; | ||
| 1052 | this.endIndex = endIndex; | ||
| 1053 | } | ||
| 1054 | |||
| 1055 | public Set entrySet() { | ||
| 1056 | HashSet set = new HashSet(); | ||
| 1057 | synchronized (AttributedString.this) { | ||
| 1058 | int size = runAttributes[runIndex].size(); | ||
| 1059 | for (int i = 0; i < size; i++) { | ||
| 1060 | Attribute key = (Attribute) runAttributes[runIndex].get(i); | ||
| 1061 | Object value = runAttributeValues[runIndex].get(i); | ||
| 1062 | if (value instanceof Annotation) { | ||
| 1063 | value = AttributedString.this.getAttributeCheckRange(key, | ||
| 1064 | runIndex, beginIndex, endIndex); | ||
| 1065 | if (value == null) { | ||
| 1066 | continue; | ||
| 1067 | } | ||
| 1068 | } | ||
| 1069 | Map.Entry entry = new AttributeEntry(key, value); | ||
| 1070 | set.add(entry); | ||
| 1071 | } | ||
| 1072 | } | ||
| 1073 | return set; | ||
| 1074 | } | ||
| 1075 | |||
| 1076 | public Object get(Object key) { | ||
| 1077 | return AttributedString.this.getAttributeCheckRange((Attribute) key, runIndex, beginIndex, endIndex); | ||
| 1078 | } | ||
| 1079 | } | ||
| 1080 | } | ||
| 1081 | |||
| 1082 | class AttributeEntry implements Map.Entry { | ||
| 1083 | |||
| 1084 | private Attribute key; | ||
| 1085 | private Object value; | ||
| 1086 | |||
| 1087 | AttributeEntry(Attribute key, Object value) { | ||
| 1088 | this.key = key; | ||
| 1089 | this.value = value; | ||
| 1090 | } | ||
| 1091 | |||
| 1092 | public boolean equals(Object o) { | ||
| 1093 | if (!(o instanceof AttributeEntry)) { | ||
| 1094 | return false; | ||
| 1095 | } | ||
| 1096 | AttributeEntry other = (AttributeEntry) o; | ||
| 1097 | return other.key.equals(key) && | ||
| 1098 | (value == null ? other.value == null : other.value.equals(value)); | ||
| 1099 | } | ||
| 1100 | |||
| 1101 | public Object getKey() { | ||
| 1102 | return key; | ||
| 1103 | } | ||
| 1104 | |||
| 1105 | public Object getValue() { | ||
| 1106 | return value; | ||
| 1107 | } | ||
| 1108 | |||
| 1109 | public Object setValue(Object newValue) { | ||
| 1110 | throw new UnsupportedOperationException(); | ||
| 1111 | } | ||
| 1112 | |||
| 1113 | public int hashCode() { | ||
| 1114 | return key.hashCode() ^ (value==null ? 0 : value.hashCode()); | ||
| 1115 | } | ||
| 1116 | |||
| 1117 | public String toString() { | ||
| 1118 | return key.toString()+"="+value.toString(); | ||
| 1119 | } | ||
| 1120 | } | ||