001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.gui.mappaint.mapcss; 003 004import java.text.MessageFormat; 005import java.util.EnumSet; 006import java.util.HashMap; 007import java.util.Locale; 008import java.util.Map; 009import java.util.Objects; 010import java.util.Set; 011import java.util.function.BiPredicate; 012import java.util.function.IntFunction; 013import java.util.function.Predicate; 014import java.util.regex.Pattern; 015import java.util.regex.PatternSyntaxException; 016 017import org.openstreetmap.josm.data.osm.INode; 018import org.openstreetmap.josm.data.osm.IPrimitive; 019import org.openstreetmap.josm.data.osm.IRelation; 020import org.openstreetmap.josm.data.osm.IWay; 021import org.openstreetmap.josm.data.osm.Node; 022import org.openstreetmap.josm.data.osm.OsmPrimitive; 023import org.openstreetmap.josm.data.osm.OsmUtils; 024import org.openstreetmap.josm.data.osm.Relation; 025import org.openstreetmap.josm.data.osm.Tag; 026import org.openstreetmap.josm.data.osm.Tagged; 027import org.openstreetmap.josm.data.osm.search.SearchCompiler.InDataSourceArea; 028import org.openstreetmap.josm.data.osm.visitor.paint.relations.Multipolygon; 029import org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache; 030import org.openstreetmap.josm.gui.mappaint.Cascade; 031import org.openstreetmap.josm.gui.mappaint.ElemStyles; 032import org.openstreetmap.josm.gui.mappaint.Environment; 033import org.openstreetmap.josm.gui.mappaint.mapcss.Condition.Context; 034import org.openstreetmap.josm.gui.mappaint.mapcss.Condition.TagCondition; 035import org.openstreetmap.josm.tools.CheckParameterUtil; 036import org.openstreetmap.josm.tools.Utils; 037 038/** 039 * Factory to generate {@link Condition}s. 040 * @since 10837 (Extracted from Condition) 041 */ 042public final class ConditionFactory { 043 044 private ConditionFactory() { 045 // Hide default constructor for utils classes 046 } 047 048 /** 049 * Create a new condition that checks the key and the value of the object. 050 * @param k The key. 051 * @param v The reference value 052 * @param op The operation to use when comparing the value 053 * @param context The type of context to use. 054 * @param considerValAsKey whether to consider {@code v} as another key and compare the values of key {@code k} and key {@code v}. 055 * @return The new condition. 056 * @throws MapCSSException if the arguments are incorrect 057 */ 058 public static Condition createKeyValueCondition(String k, String v, Op op, Context context, boolean considerValAsKey) { 059 switch (context) { 060 case PRIMITIVE: 061 if (KeyValueRegexpCondition.SUPPORTED_OPS.contains(op) && !considerValAsKey) { 062 try { 063 return new KeyValueRegexpCondition(k, v, op, false); 064 } catch (PatternSyntaxException e) { 065 throw new MapCSSException(e); 066 } 067 } 068 if (!considerValAsKey && op == Op.EQ) 069 return new SimpleKeyValueCondition(k, v); 070 return new KeyValueCondition(k, v, op, considerValAsKey); 071 case LINK: 072 if (considerValAsKey) 073 throw new MapCSSException("''considerValAsKey'' not supported in LINK context"); 074 if ("role".equalsIgnoreCase(k)) 075 return new RoleCondition(v, op); 076 else if ("index".equalsIgnoreCase(k)) 077 return new IndexCondition(v, op); 078 else 079 throw new MapCSSException( 080 MessageFormat.format("Expected key ''role'' or ''index'' in link context. Got ''{0}''.", k)); 081 082 default: throw new AssertionError(); 083 } 084 } 085 086 /** 087 * Create a condition in which the key and the value need to match a given regexp 088 * @param k The key regexp 089 * @param v The value regexp 090 * @param op The operation to use when comparing the key and the value. 091 * @return The new condition. 092 */ 093 public static Condition createRegexpKeyRegexpValueCondition(String k, String v, Op op) { 094 return new RegexpKeyValueRegexpCondition(k, v, op); 095 } 096 097 /** 098 * Creates a condition that checks the given key. 099 * @param k The key to test for 100 * @param not <code>true</code> to invert the match 101 * @param matchType The match type to check for. 102 * @param context The context this rule is found in. 103 * @return the new condition. 104 */ 105 public static Condition createKeyCondition(String k, boolean not, KeyMatchType matchType, Context context) { 106 switch (context) { 107 case PRIMITIVE: 108 if (KeyMatchType.REGEX == matchType && k.matches("[A-Za-z0-9:_-]+")) { 109 // optimization: using String.contains avoids allocating a Matcher 110 return new KeyCondition(k, not, KeyMatchType.ANY_CONTAINS); 111 } else if (KeyMatchType.REGEX == matchType && k.matches("\\^[A-Za-z0-9:_-]+")) { 112 // optimization: using String.startsWith avoids allocating a Matcher 113 return new KeyCondition(k.substring(1), not, KeyMatchType.ANY_STARTS_WITH); 114 } else if (KeyMatchType.REGEX == matchType && k.matches("[A-Za-z0-9:_-]+\\$")) { 115 // optimization: using String.endsWith avoids allocating a Matcher 116 return new KeyCondition(k.substring(0, k.length() - 1), not, KeyMatchType.ANY_ENDS_WITH); 117 } else if (matchType == KeyMatchType.REGEX) { 118 return new KeyRegexpCondition(Pattern.compile(k), not); 119 } else { 120 return new KeyCondition(k, not, matchType); 121 } 122 case LINK: 123 if (matchType != null) 124 throw new MapCSSException("Question mark operator ''?'' and regexp match not supported in LINK context"); 125 if (not) 126 return new RoleCondition(k, Op.NEQ); 127 else 128 return new RoleCondition(k, Op.EQ); 129 130 default: throw new AssertionError(); 131 } 132 } 133 134 /** 135 * Create a new pseudo class condition 136 * @param id The id of the pseudo class 137 * @param not <code>true</code> to invert the condition 138 * @param context The context the class is found in. 139 * @return The new condition 140 */ 141 public static PseudoClassCondition createPseudoClassCondition(String id, boolean not, Context context) { 142 return PseudoClassCondition.createPseudoClassCondition(id, not, context); 143 } 144 145 /** 146 * Create a new class condition 147 * @param id The id of the class to match 148 * @param not <code>true</code> to invert the condition 149 * @param context Ignored 150 * @return The new condition 151 */ 152 public static ClassCondition createClassCondition(String id, boolean not, Context context) { 153 return new ClassCondition(id, not); 154 } 155 156 /** 157 * Create a new condition that a expression needs to be fulfilled 158 * @param e the expression to check 159 * @param context Ignored 160 * @return The new condition 161 */ 162 public static ExpressionCondition createExpressionCondition(Expression e, Context context) { 163 return new ExpressionCondition(e); 164 } 165 166 /** 167 * This is the operation that {@link KeyValueCondition} uses to match. 168 */ 169 public enum Op { 170 /** The value equals the given reference. */ 171 EQ(Objects::equals), 172 /** The value does not equal the reference. */ 173 NEQ(EQ), 174 /** The value is greater than or equal to the given reference value (as float). */ 175 GREATER_OR_EQUAL(comparisonResult -> comparisonResult >= 0), 176 /** The value is greater than the given reference value (as float). */ 177 GREATER(comparisonResult -> comparisonResult > 0), 178 /** The value is less than or equal to the given reference value (as float). */ 179 LESS_OR_EQUAL(comparisonResult -> comparisonResult <= 0), 180 /** The value is less than the given reference value (as float). */ 181 LESS(comparisonResult -> comparisonResult < 0), 182 /** The reference is treated as regular expression and the value needs to match it. */ 183 REGEX((test, prototype) -> Pattern.compile(prototype).matcher(test).find()), 184 /** The reference is treated as regular expression and the value needs to not match it. */ 185 NREGEX(REGEX), 186 /** The reference is treated as a list separated by ';'. Spaces around the ; are ignored. 187 * The value needs to be equal one of the list elements. */ 188 ONE_OF((test, prototype) -> OsmUtils.splitMultipleValues(test).anyMatch(prototype::equals)), 189 /** The value needs to begin with the reference string. */ 190 BEGINS_WITH(String::startsWith), 191 /** The value needs to end with the reference string. */ 192 ENDS_WITH(String::endsWith), 193 /** The value needs to contain the reference string. */ 194 CONTAINS(String::contains); 195 196 static final Set<Op> NEGATED_OPS = EnumSet.of(NEQ, NREGEX); 197 198 @SuppressWarnings("ImmutableEnumChecker") 199 private final BiPredicate<String, String> function; 200 201 private final boolean negated; 202 203 /** 204 * Create a new string operation. 205 * @param func The function to apply during {@link #eval(String, String)}. 206 */ 207 Op(BiPredicate<String, String> func) { 208 this.function = func; 209 negated = false; 210 } 211 212 /** 213 * Create a new float operation that compares two float values 214 * @param comparatorResult A function to mapt the result of the comparison 215 */ 216 Op(IntFunction<Boolean> comparatorResult) { 217 this.function = (test, prototype) -> { 218 float testFloat; 219 try { 220 testFloat = Float.parseFloat(test); 221 } catch (NumberFormatException e) { 222 return Boolean.FALSE; 223 } 224 float prototypeFloat = Float.parseFloat(prototype); 225 226 int res = Float.compare(testFloat, prototypeFloat); 227 return comparatorResult.apply(res); 228 }; 229 negated = false; 230 } 231 232 /** 233 * Create a new Op by negating an other op. 234 * @param negate inverse operation 235 */ 236 Op(Op negate) { 237 this.function = (a, b) -> !negate.function.test(a, b); 238 negated = true; 239 } 240 241 /** 242 * Evaluates a value against a reference string. 243 * @param testString The value. May be <code>null</code> 244 * @param prototypeString The reference string- 245 * @return <code>true</code> if and only if this operation matches for the given value/reference pair. 246 */ 247 public boolean eval(String testString, String prototypeString) { 248 if (testString == null) 249 return negated; 250 else 251 return function.test(testString, prototypeString); 252 } 253 } 254 255 /** 256 * Most common case of a KeyValueCondition, this is the basic key=value case. 257 * 258 * Extra class for performance reasons. 259 */ 260 public static class SimpleKeyValueCondition implements TagCondition { 261 /** 262 * The key to search for. 263 */ 264 public final String k; 265 /** 266 * The value to search for. 267 */ 268 public final String v; 269 270 /** 271 * Create a new SimpleKeyValueCondition. 272 * @param k The key 273 * @param v The value. 274 */ 275 public SimpleKeyValueCondition(String k, String v) { 276 this.k = k.intern(); 277 this.v = v.intern(); 278 } 279 280 @Override 281 public boolean applies(Tagged osm) { 282 return v.equals(osm.get(k)); 283 } 284 285 @Override 286 public Tag asTag(Tagged primitive) { 287 return new Tag(k, v); 288 } 289 290 @Override 291 public String toString() { 292 return '[' + k + '=' + v + ']'; 293 } 294 295 } 296 297 /** 298 * <p>Represents a key/value condition which is either applied to a primitive.</p> 299 * 300 */ 301 public static class KeyValueCondition implements TagCondition { 302 /** 303 * The key to search for. 304 */ 305 public final String k; 306 /** 307 * The value to search for. 308 */ 309 public final String v; 310 /** 311 * The key/value match operation. 312 */ 313 public final Op op; 314 /** 315 * If this flag is set, {@link #v} is treated as a key and the value is the value set for that key. 316 */ 317 public final boolean considerValAsKey; 318 319 /** 320 * <p>Creates a key/value-condition.</p> 321 * 322 * @param k the key 323 * @param v the value 324 * @param op the operation 325 * @param considerValAsKey whether to consider {@code v} as another key and compare the values of key {@code k} and key {@code v}. 326 */ 327 public KeyValueCondition(String k, String v, Op op, boolean considerValAsKey) { 328 this.k = k.intern(); 329 this.v = v.intern(); 330 this.op = op; 331 this.considerValAsKey = considerValAsKey; 332 } 333 334 /** 335 * Determines if this condition requires an exact key match. 336 * @return {@code true} if this condition requires an exact key match. 337 * @since 14801 338 */ 339 public boolean requiresExactKeyMatch() { 340 return !Op.NEGATED_OPS.contains(op); 341 } 342 343 @Override 344 public boolean applies(Tagged osm) { 345 return op.eval(osm.get(k), considerValAsKey ? osm.get(v) : v); 346 } 347 348 @Override 349 public Tag asTag(Tagged primitive) { 350 return new Tag(k, v); 351 } 352 353 @Override 354 public String toString() { 355 return '[' + k + '\'' + op + '\'' + v + ']'; 356 } 357 } 358 359 /** 360 * This condition requires a fixed key to match a given regexp 361 */ 362 public static class KeyValueRegexpCondition extends KeyValueCondition { 363 protected static final Set<Op> SUPPORTED_OPS = EnumSet.of(Op.REGEX, Op.NREGEX); 364 365 final Pattern pattern; 366 367 /** 368 * Constructs a new {@code KeyValueRegexpCondition}. 369 * @param k key 370 * @param v value 371 * @param op operation 372 * @param considerValAsKey must be false 373 * @throws PatternSyntaxException if the value syntax is invalid 374 */ 375 public KeyValueRegexpCondition(String k, String v, Op op, boolean considerValAsKey) { 376 super(k, v, op, considerValAsKey); /* value is needed in validator messages */ 377 CheckParameterUtil.ensureThat(!considerValAsKey, "considerValAsKey is not supported"); 378 CheckParameterUtil.ensureThat(SUPPORTED_OPS.contains(op), "Op must be REGEX or NREGEX"); 379 this.pattern = Pattern.compile(v); 380 } 381 382 protected boolean matches(Tagged osm) { 383 final String value = osm.get(k); 384 return value != null && pattern.matcher(value).find(); 385 } 386 387 @Override 388 public boolean applies(Tagged osm) { 389 if (Op.REGEX == op) { 390 return matches(osm); 391 } else if (Op.NREGEX == op) { 392 return !matches(osm); 393 } else { 394 throw new IllegalStateException(); 395 } 396 } 397 } 398 399 /** 400 * A condition that checks that a key with the matching pattern has a value with the matching pattern. 401 */ 402 public static class RegexpKeyValueRegexpCondition extends KeyValueRegexpCondition { 403 404 final Pattern keyPattern; 405 406 /** 407 * Create a condition in which the key and the value need to match a given regexp 408 * @param k The key regexp 409 * @param v The value regexp 410 * @param op The operation to use when comparing the key and the value. 411 */ 412 public RegexpKeyValueRegexpCondition(String k, String v, Op op) { 413 super(k, v, op, false); 414 this.keyPattern = Pattern.compile(k); 415 } 416 417 @Override 418 public boolean requiresExactKeyMatch() { 419 return false; 420 } 421 422 @Override 423 protected boolean matches(Tagged osm) { 424 return osm.getKeys().entrySet().stream() 425 .anyMatch(kv -> keyPattern.matcher(kv.getKey()).find() && pattern.matcher(kv.getValue()).find()); 426 } 427 } 428 429 /** 430 * Role condition. 431 */ 432 public static class RoleCondition implements Condition { 433 final String role; 434 final Op op; 435 436 /** 437 * Constructs a new {@code RoleCondition}. 438 * @param role role 439 * @param op operation 440 */ 441 public RoleCondition(String role, Op op) { 442 this.role = role; 443 this.op = op; 444 } 445 446 @Override 447 public boolean applies(Environment env) { 448 String testRole = env.getRole(); 449 if (testRole == null) return false; 450 return op.eval(testRole, role); 451 } 452 } 453 454 /** 455 * Index condition. 456 */ 457 public static class IndexCondition implements Condition { 458 final String index; 459 final Op op; 460 final boolean isFirstOrLast; 461 462 /** 463 * Constructs a new {@code IndexCondition}. 464 * @param index index 465 * @param op operation 466 */ 467 public IndexCondition(String index, Op op) { 468 this.index = index; 469 this.op = op; 470 isFirstOrLast = op == Op.EQ && ("1".equals(index) || "-1".equals(index)); 471 } 472 473 @Override 474 public boolean applies(Environment env) { 475 if (env.index == null) return false; 476 if (index.startsWith("-")) { 477 return env.count != null && op.eval(Integer.toString(env.index - env.count), index); 478 } else { 479 return op.eval(Integer.toString(env.index + 1), index); 480 } 481 } 482 } 483 484 /** 485 * This defines how {@link KeyCondition} matches a given key. 486 */ 487 public enum KeyMatchType { 488 /** 489 * The key needs to be equal to the given label. 490 */ 491 EQ, 492 /** 493 * The key needs to have a true value (yes, ...) 494 * @see OsmUtils#isTrue(String) 495 */ 496 TRUE, 497 /** 498 * The key needs to have a false value (no, ...) 499 * @see OsmUtils#isFalse(String) 500 */ 501 FALSE, 502 /** 503 * The key needs to match the given regular expression. 504 */ 505 REGEX, 506 /** 507 * The key needs to contain the given label as substring. 508 */ 509 ANY_CONTAINS, 510 /** 511 * The key needs to start with the given label. 512 */ 513 ANY_STARTS_WITH, 514 /** 515 * The key needs to end with the given label. 516 */ 517 ANY_ENDS_WITH, 518 } 519 520 /** 521 * <p>KeyCondition represent one of the following conditions in either the link or the 522 * primitive context:</p> 523 * <pre> 524 * ["a label"] PRIMITIVE: the primitive has a tag "a label" 525 * LINK: the parent is a relation and it has at least one member with the role 526 * "a label" referring to the child 527 * 528 * [!"a label"] PRIMITIVE: the primitive doesn't have a tag "a label" 529 * LINK: the parent is a relation but doesn't have a member with the role 530 * "a label" referring to the child 531 * 532 * ["a label"?] PRIMITIVE: the primitive has a tag "a label" whose value evaluates to a true-value 533 * LINK: not supported 534 * 535 * ["a label"?!] PRIMITIVE: the primitive has a tag "a label" whose value evaluates to a false-value 536 * LINK: not supported 537 * </pre> 538 * @see KeyRegexpCondition 539 */ 540 public static class KeyCondition implements TagCondition { 541 542 /** 543 * The key name. 544 */ 545 public final String label; 546 /** 547 * If we should negate the result of the match. 548 */ 549 public final boolean negateResult; 550 /** 551 * Describes how to match the label against the key. 552 * @see KeyMatchType 553 */ 554 public final KeyMatchType matchType; 555 556 /** 557 * Creates a new KeyCondition 558 * @param label The key name (or regexp) to use. 559 * @param negateResult If we should negate the result., 560 * @param matchType The match type. 561 */ 562 public KeyCondition(String label, boolean negateResult, KeyMatchType matchType) { 563 CheckParameterUtil.ensureThat(matchType != KeyMatchType.REGEX, "Use KeyPatternCondition"); 564 this.label = label; 565 this.negateResult = negateResult; 566 this.matchType = matchType == null ? KeyMatchType.EQ : matchType; 567 } 568 569 @Override 570 public boolean applies(Tagged osm) { 571 switch (matchType) { 572 case TRUE: 573 return osm.isKeyTrue(label) ^ negateResult; 574 case FALSE: 575 return osm.isKeyFalse(label) ^ negateResult; 576 case ANY_CONTAINS: 577 case ANY_STARTS_WITH: 578 case ANY_ENDS_WITH: 579 return osm.keys().anyMatch(keyPredicate()) ^ negateResult; 580 default: 581 return osm.hasKey(label) ^ negateResult; 582 } 583 } 584 585 private Predicate<String> keyPredicate() { 586 switch (matchType) { 587 case ANY_CONTAINS: 588 return key -> key.contains(label); 589 case ANY_STARTS_WITH: 590 return key -> key.startsWith(label); 591 case ANY_ENDS_WITH: 592 return key -> key.endsWith(label); 593 default: 594 return null; 595 } 596 } 597 598 /** 599 * Get the matched key and the corresponding value. 600 * <p> 601 * WARNING: This ignores {@link #negateResult}. 602 * @param p The primitive to get the value from. 603 * @return The tag. 604 */ 605 @Override 606 public Tag asTag(Tagged p) { 607 String key = label; 608 Predicate<String> keyPredicate = keyPredicate(); 609 if (keyPredicate != null) { 610 key = p.keys().filter(keyPredicate).findAny().orElse(key); 611 } 612 return new Tag(key, p.get(key)); 613 } 614 615 @Override 616 public String toString() { 617 return '[' + (negateResult ? "!" : "") + label + ']'; 618 } 619 } 620 621 /** 622 * KeyPatternCondition represents a conditions matching keys based on a pattern. 623 */ 624 public static class KeyRegexpCondition implements TagCondition { 625 626 /** 627 * A predicate used to match a the regexp against the key. Only used if the match type is regexp. 628 */ 629 public final Pattern pattern; 630 /** 631 * If we should negate the result of the match. 632 */ 633 public final boolean negateResult; 634 635 /** 636 * Creates a new KeyPatternCondition 637 * @param pattern The regular expression for matching keys. 638 * @param negateResult If we should negate the result. 639 */ 640 public KeyRegexpCondition(Pattern pattern, boolean negateResult) { 641 this.negateResult = negateResult; 642 this.pattern = pattern; 643 } 644 645 @Override 646 public boolean applies(Tagged osm) { 647 boolean matches = osm.hasKeys() && osm.keys().anyMatch(pattern.asPredicate()); 648 return matches ^ negateResult; 649 } 650 651 /** 652 * Get the matched key and the corresponding value. 653 * <p> 654 * WARNING: This ignores {@link #negateResult}. 655 * <p> 656 * WARNING: For regexp, the regular expression is returned instead of a key if the match failed. 657 * @param p The primitive to get the value from. 658 * @return The tag. 659 */ 660 @Override 661 public Tag asTag(Tagged p) { 662 String key = p.keys().filter(pattern.asPredicate()).findAny().orElse(pattern.pattern()); 663 return new Tag(key, p.get(key)); 664 } 665 666 @Override 667 public String toString() { 668 return '[' + (negateResult ? "!" : "") + pattern + ']'; 669 } 670 } 671 672 /** 673 * Class condition. 674 */ 675 public static class ClassCondition implements Condition { 676 677 /** Class identifier */ 678 public final String id; 679 final boolean not; 680 681 /** 682 * Constructs a new {@code ClassCondition}. 683 * @param id id 684 * @param not negation or not 685 */ 686 public ClassCondition(String id, boolean not) { 687 this.id = id; 688 this.not = not; 689 } 690 691 @Override 692 public boolean applies(Environment env) { 693 Cascade cascade = env.getCascade(); 694 return cascade != null && (not ^ cascade.containsKey(id)); 695 } 696 697 @Override 698 public String toString() { 699 return (not ? "!" : "") + '.' + id; 700 } 701 } 702 703 /** 704 * Like <a href="http://www.w3.org/TR/css3-selectors/#pseudo-classes">CSS pseudo classes</a>, MapCSS pseudo classes 705 * are written in lower case with dashes between words. 706 */ 707 public static final class PseudoClasses { 708 709 private PseudoClasses() { 710 // Hide default constructor for utilities classes 711 } 712 713 /** 714 * {@code closed} tests whether the way is closed or the relation is a closed multipolygon 715 * @param e MapCSS environment 716 * @return {@code true} if the way is closed or the relation is a closed multipolygon 717 */ 718 static boolean closed(Environment e) { 719 if (e.osm instanceof IWay<?> && ((IWay<?>) e.osm).isClosed()) 720 return true; 721 return e.osm instanceof IRelation<?> && ((IRelation<?>) e.osm).isMultipolygon(); 722 } 723 724 /** 725 * {@code :modified} tests whether the object has been modified. 726 * @param e MapCSS environment 727 * @return {@code true} if the object has been modified 728 * @see IPrimitive#isModified() 729 */ 730 static boolean modified(Environment e) { 731 return e.osm.isModified() || e.osm.isNewOrUndeleted(); 732 } 733 734 /** 735 * {@code ;new} tests whether the object is new. 736 * @param e MapCSS environment 737 * @return {@code true} if the object is new 738 * @see IPrimitive#isNew() 739 */ 740 static boolean _new(Environment e) { 741 return e.osm.isNew(); 742 } 743 744 /** 745 * {@code :connection} tests whether the object is a connection node. 746 * @param e MapCSS environment 747 * @return {@code true} if the object is a connection node 748 * @see Node#isConnectionNode() 749 */ 750 static boolean connection(Environment e) { 751 return e.osm instanceof INode && e.osm.getDataSet() != null && ((INode) e.osm).isConnectionNode(); 752 } 753 754 /** 755 * {@code :tagged} tests whether the object is tagged. 756 * @param e MapCSS environment 757 * @return {@code true} if the object is tagged 758 * @see IPrimitive#isTagged() 759 */ 760 static boolean tagged(Environment e) { 761 return e.osm.isTagged(); 762 } 763 764 /** 765 * {@code :same-tags} tests whether the object has the same tags as its child/parent. 766 * @param e MapCSS environment 767 * @return {@code true} if the object has the same tags as its child/parent 768 * @see IPrimitive#hasSameInterestingTags(IPrimitive) 769 */ 770 static boolean sameTags(Environment e) { 771 return e.osm.hasSameInterestingTags(Utils.firstNonNull(e.child, e.parent)); 772 } 773 774 /** 775 * {@code :area-style} tests whether the object has an area style. This is useful for validators. 776 * @param e MapCSS environment 777 * @return {@code true} if the object has an area style 778 * @see ElemStyles#hasAreaElemStyle(IPrimitive, boolean) 779 */ 780 static boolean areaStyle(Environment e) { 781 // only for validator 782 return ElemStyles.hasAreaElemStyle(e.osm, false); 783 } 784 785 /** 786 * {@code unconnected}: tests whether the object is a unconnected node. 787 * @param e MapCSS environment 788 * @return {@code true} if the object is a unconnected node 789 */ 790 static boolean unconnected(Environment e) { 791 return e.osm instanceof Node && ((Node) e.osm).getParentWays().isEmpty(); 792 } 793 794 /** 795 * {@code righthandtraffic} checks if there is right-hand traffic at the current location. 796 * @param e MapCSS environment 797 * @return {@code true} if there is right-hand traffic at the current location 798 * @see Functions#is_right_hand_traffic(Environment) 799 */ 800 static boolean righthandtraffic(Environment e) { 801 return Functions.is_right_hand_traffic(e); 802 } 803 804 /** 805 * {@code clockwise} whether the way is closed and oriented clockwise, 806 * or non-closed and the 1st, 2nd and last node are in clockwise order. 807 * @param e MapCSS environment 808 * @return {@code true} if the way clockwise 809 * @see Functions#is_clockwise(Environment) 810 */ 811 static boolean clockwise(Environment e) { 812 return Functions.is_clockwise(e); 813 } 814 815 /** 816 * {@code anticlockwise} whether the way is closed and oriented anticlockwise, 817 * or non-closed and the 1st, 2nd and last node are in anticlockwise order. 818 * @param e MapCSS environment 819 * @return {@code true} if the way clockwise 820 * @see Functions#is_anticlockwise(Environment) 821 */ 822 static boolean anticlockwise(Environment e) { 823 return Functions.is_anticlockwise(e); 824 } 825 826 /** 827 * {@code unclosed-multipolygon} tests whether the object is an unclosed multipolygon. 828 * @param e MapCSS environment 829 * @return {@code true} if the object is an unclosed multipolygon 830 */ 831 static boolean unclosed_multipolygon(Environment e) { 832 return e.osm instanceof Relation && ((Relation) e.osm).isMultipolygon() && 833 !e.osm.isIncomplete() && !((Relation) e.osm).hasIncompleteMembers() && 834 !MultipolygonCache.getInstance().get((Relation) e.osm).getOpenEnds().isEmpty(); 835 } 836 837 private static final Predicate<OsmPrimitive> IN_DOWNLOADED_AREA = new InDataSourceArea(false); 838 839 /** 840 * {@code in-downloaded-area} tests whether the object is within source area ("downloaded area"). 841 * @param e MapCSS environment 842 * @return {@code true} if the object is within source area ("downloaded area") 843 * @see InDataSourceArea 844 */ 845 static boolean inDownloadedArea(Environment e) { 846 return e.osm instanceof OsmPrimitive && IN_DOWNLOADED_AREA.test((OsmPrimitive) e.osm); 847 } 848 849 static boolean completely_downloaded(Environment e) { 850 if (e.osm instanceof IRelation<?>) { 851 return !((IRelation<?>) e.osm).hasIncompleteMembers(); 852 } else if (e.osm instanceof IWay<?>) { 853 return !((IWay<?>) e.osm).hasIncompleteNodes(); 854 } else if (e.osm instanceof INode) { 855 return ((INode) e.osm).isLatLonKnown(); 856 } else { 857 return true; 858 } 859 } 860 861 static boolean closed2(Environment e) { 862 if (e.osm instanceof IWay<?> && ((IWay<?>) e.osm).isClosed()) 863 return true; 864 if (e.osm instanceof Relation && ((Relation) e.osm).isMultipolygon()) { 865 Multipolygon multipolygon = MultipolygonCache.getInstance().get((Relation) e.osm); 866 return multipolygon != null && multipolygon.getOpenEnds().isEmpty(); 867 } 868 return false; 869 } 870 871 static boolean selected(Environment e) { 872 if (e.mc != null) { 873 e.getCascade().setDefaultSelectedHandling(false); 874 } 875 return e.osm.isSelected(); 876 } 877 878 /** 879 * Check if the object is highlighted (i.e., is hovered over) 880 * @param e The MapCSS environment 881 * @return {@code true} if the object is highlighted 882 * @see IPrimitive#isHighlighted 883 * @since 17862 884 */ 885 static boolean highlighted(Environment e) { 886 return e.osm.isHighlighted(); 887 } 888 } 889 890 /** 891 * Pseudo class condition. 892 */ 893 public static class PseudoClassCondition implements Condition { 894 895 static final Map<String, PseudoClassCondition> CONDITION_MAP = new HashMap<>(); 896 897 static { 898 PseudoClassCondition.register("anticlockwise", PseudoClasses::anticlockwise); 899 PseudoClassCondition.register("areaStyle", PseudoClasses::areaStyle); 900 PseudoClassCondition.register("clockwise", PseudoClasses::clockwise); 901 PseudoClassCondition.register("closed", PseudoClasses::closed); 902 PseudoClassCondition.register("closed2", PseudoClasses::closed2); 903 PseudoClassCondition.register("completely_downloaded", PseudoClasses::completely_downloaded); 904 PseudoClassCondition.register("connection", PseudoClasses::connection); 905 PseudoClassCondition.register("highlighted", PseudoClasses::highlighted); 906 PseudoClassCondition.register("inDownloadedArea", PseudoClasses::inDownloadedArea); 907 PseudoClassCondition.register("modified", PseudoClasses::modified); 908 PseudoClassCondition.register("new", PseudoClasses::_new); 909 PseudoClassCondition.register("righthandtraffic", PseudoClasses::righthandtraffic); 910 PseudoClassCondition.register("sameTags", PseudoClasses::sameTags); 911 PseudoClassCondition.register("selected", PseudoClasses::selected); 912 PseudoClassCondition.register("tagged", PseudoClasses::tagged); 913 PseudoClassCondition.register("unclosed_multipolygon", PseudoClasses::unclosed_multipolygon); 914 PseudoClassCondition.register("unconnected", PseudoClasses::unconnected); 915 } 916 917 private static void register(String name, Predicate<Environment> predicate) { 918 CONDITION_MAP.put(clean(name), new PseudoClassCondition(":" + name, predicate)); 919 CONDITION_MAP.put("!" + clean(name), new PseudoClassCondition("!:" + name, predicate.negate())); 920 } 921 922 private final String name; 923 private final Predicate<Environment> predicate; 924 925 protected PseudoClassCondition(String name, Predicate<Environment> predicate) { 926 this.name = name; 927 this.predicate = predicate; 928 } 929 930 /** 931 * Create a new pseudo class condition 932 * @param id The id of the pseudo class 933 * @param not <code>true</code> to invert the condition 934 * @param context The context the class is found in. 935 * @return The new condition 936 */ 937 public static PseudoClassCondition createPseudoClassCondition(String id, boolean not, Context context) { 938 CheckParameterUtil.ensureThat(!"sameTags".equals(id) || Context.LINK == context, "sameTags only supported in LINK context"); 939 if ("open_end".equals(id)) { 940 return new OpenEndPseudoClassCondition(not); 941 } 942 String cleanId = not ? clean("!" + id) : clean(id); 943 PseudoClassCondition condition = CONDITION_MAP.get(cleanId); 944 if (condition != null) { 945 return condition; 946 } 947 throw new MapCSSException("Invalid pseudo class specified: " + id); 948 } 949 950 private static String clean(String id) { 951 // for backwards compatibility, consider :sameTags == :same-tags == :same_tags (#11150) 952 return id.toLowerCase(Locale.ROOT).replaceAll("[-_]", ""); 953 } 954 955 @Override 956 public boolean applies(Environment e) { 957 return predicate.test(e); 958 } 959 960 @Override 961 public String toString() { 962 return name; 963 } 964 } 965 966 /** 967 * Open end pseudo class condition. 968 */ 969 public static class OpenEndPseudoClassCondition extends PseudoClassCondition { 970 final boolean not; 971 /** 972 * Constructs a new {@code OpenEndPseudoClassCondition}. 973 * @param not negation or not 974 */ 975 public OpenEndPseudoClassCondition(boolean not) { 976 super("open_end", null); 977 this.not = not; 978 } 979 980 @Override 981 public boolean applies(Environment e) { 982 return !not; 983 } 984 } 985 986 /** 987 * A condition that is fulfilled whenever the expression is evaluated to be true. 988 */ 989 public static class ExpressionCondition implements Condition { 990 991 final Expression e; 992 993 /** 994 * Constructs a new {@code ExpressionFactory} 995 * @param e expression 996 */ 997 public ExpressionCondition(Expression e) { 998 this.e = e; 999 } 1000 1001 /** 1002 * Returns the expression. 1003 * @return the expression 1004 * @since 14484 1005 */ 1006 public final Expression getExpression() { 1007 return e; 1008 } 1009 1010 @Override 1011 public boolean applies(Environment env) { 1012 Boolean b = Cascade.convertTo(e.evaluate(env), Boolean.class); 1013 return b != null && b; 1014 } 1015 1016 @Override 1017 public String toString() { 1018 return '[' + e.toString() + ']'; 1019 } 1020 } 1021}