source: josm/trunk/src/org/openstreetmap/josm/gui/mappaint/ElemStyles.java

Last change on this file was 17867, checked in by simon04, 5 years ago

see #17177 - fix @since xxx
  • Property svn:eol-style set to native
File size: 26.8 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.gui.mappaint;
3
4import java.awt.Color;
5import java.util.ArrayList;
6import java.util.Collection;
7import java.util.Collections;
8import java.util.HashMap;
9import java.util.List;
10import java.util.Map;
11import java.util.Map.Entry;
12import java.util.Objects;
13import java.util.Optional;
14
15import org.openstreetmap.josm.data.osm.INode;
16import org.openstreetmap.josm.data.osm.IPrimitive;
17import org.openstreetmap.josm.data.osm.IRelation;
18import org.openstreetmap.josm.data.osm.IWay;
19import org.openstreetmap.josm.data.osm.Relation;
20import org.openstreetmap.josm.data.osm.visitor.paint.PaintColors;
21import org.openstreetmap.josm.data.osm.visitor.paint.relations.Multipolygon;
22import org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache;
23import org.openstreetmap.josm.data.preferences.NamedColorProperty;
24import org.openstreetmap.josm.gui.MainApplication;
25import org.openstreetmap.josm.gui.NavigatableComponent;
26import org.openstreetmap.josm.gui.layer.OsmDataLayer;
27import org.openstreetmap.josm.gui.mappaint.DividedScale.RangeViolatedError;
28import org.openstreetmap.josm.gui.mappaint.mapcss.MapCSSStyleSource;
29import org.openstreetmap.josm.gui.mappaint.styleelement.AreaElement;
30import org.openstreetmap.josm.gui.mappaint.styleelement.AreaIconElement;
31import org.openstreetmap.josm.gui.mappaint.styleelement.BoxTextElement;
32import org.openstreetmap.josm.gui.mappaint.styleelement.DefaultStyles;
33import org.openstreetmap.josm.gui.mappaint.styleelement.LineElement;
34import org.openstreetmap.josm.gui.mappaint.styleelement.NodeElement;
35import org.openstreetmap.josm.gui.mappaint.styleelement.RepeatImageElement;
36import org.openstreetmap.josm.gui.mappaint.styleelement.StyleElement;
37import org.openstreetmap.josm.gui.mappaint.styleelement.TextElement;
38import org.openstreetmap.josm.gui.mappaint.styleelement.TextLabel;
39import org.openstreetmap.josm.gui.util.GuiHelper;
40import org.openstreetmap.josm.spi.preferences.Config;
41import org.openstreetmap.josm.spi.preferences.PreferenceChangeEvent;
42import org.openstreetmap.josm.spi.preferences.PreferenceChangedListener;
43import org.openstreetmap.josm.tools.ColorHelper;
44import org.openstreetmap.josm.tools.Pair;
45
46/**
47 * Generates a list of {@link StyleElement}s for a primitive, to
48 * be drawn on the map.
49 * There are several steps to derive the list of elements for display:
50 * <ol>
51 * <li>{@link #generateStyles(IPrimitive, double, boolean)} applies the
52 * {@link StyleSource}s one after another to get a key-value map of MapCSS
53 * properties. Then a preliminary set of StyleElements is derived from the
54 * properties map.</li>
55 * <li>{@link #getImpl(IPrimitive, double, NavigatableComponent)} handles the
56 * different forms of multipolygon tagging.</li>
57 * <li>{@link #getStyleCacheWithRange(IPrimitive, double, NavigatableComponent)}
58 * adds a default StyleElement for primitives that would be invisible otherwise.
59 * (For example untagged nodes and ways.)</li>
60 * </ol>
61 * The results are cached with respect to the current scale.
62 *
63 * Use {@link #setStyleSources(Collection)} to select the StyleSources that are applied.
64 */
65public class ElemStyles implements PreferenceChangedListener {
66 private final List<StyleSource> styleSources = Collections.synchronizedList(new ArrayList<>());
67 private boolean drawMultipolygon;
68
69 private short cacheIdx = 1;
70
71 private boolean defaultNodes;
72 private boolean defaultLines;
73
74 private short defaultNodesIdx;
75 private short defaultLinesIdx;
76
77 private final Map<String, String> preferenceCache = Collections.synchronizedMap(new HashMap<>());
78
79 private volatile Color backgroundColorCache;
80
81 /**
82 * Constructs a new {@code ElemStyles}.
83 */
84 public ElemStyles() {
85 Config.getPref().addPreferenceChangeListener(this);
86 }
87
88 /**
89 * Constructs a new {@code ElemStyles} with specific style sources. This does not listen to preference changes,
90 * and therefore should only be used with layers that have specific drawing requirements.
91 *
92 * @param sources The style sources (these cannot be added to, or removed from)
93 * @since 17862
94 */
95 public ElemStyles(Collection<StyleSource> sources) {
96 this.styleSources.addAll(sources);
97 }
98
99 /**
100 * Clear the style cache for all primitives of all DataSets.
101 */
102 public void clearCached() {
103 // run in EDT to make sure this isn't called during rendering run
104 GuiHelper.runInEDT(() -> {
105 cacheIdx++;
106 preferenceCache.clear();
107 backgroundColorCache = null;
108 MainApplication.getLayerManager().getLayersOfType(OsmDataLayer.class).forEach(
109 dl -> dl.data.clearMappaintCache());
110 });
111 }
112
113 /**
114 * Returns the list of style sources.
115 * @return the list of style sources
116 */
117 public List<StyleSource> getStyleSources() {
118 return Collections.<StyleSource>unmodifiableList(styleSources);
119 }
120
121 /**
122 * Returns the background color.
123 * @return the background color
124 */
125 public Color getBackgroundColor() {
126 if (backgroundColorCache != null)
127 return backgroundColorCache;
128 for (StyleSource s : styleSources) {
129 if (!s.active) {
130 continue;
131 }
132 Color backgroundColorOverride = s.getBackgroundColorOverride();
133 if (backgroundColorOverride != null) {
134 backgroundColorCache = backgroundColorOverride;
135 }
136 }
137 return Optional.ofNullable(backgroundColorCache).orElseGet(PaintColors.BACKGROUND::get);
138 }
139
140 /**
141 * Create the list of styles for one primitive.
142 *
143 * @param osm the primitive
144 * @param scale the scale (in meters per 100 pixel)
145 * @param nc display component
146 * @return list of styles
147 * @since 13810 (signature)
148 */
149 public StyleElementList get(IPrimitive osm, double scale, NavigatableComponent nc) {
150 return getStyleCacheWithRange(osm, scale, nc).a;
151 }
152
153 /**
154 * Create the list of styles and its valid scale range for one primitive.
155 *
156 * Automatically adds default styles in case no proper style was found.
157 * Uses the cache, if possible, and saves the results to the cache.
158 * @param osm OSM primitive
159 * @param scale scale
160 * @param nc navigable component
161 * @return pair containing style list and range
162 * @since 13810 (signature)
163 */
164 public Pair<StyleElementList, Range> getStyleCacheWithRange(IPrimitive osm, double scale, NavigatableComponent nc) {
165 synchronized (osm.getStyleCacheSyncObject()) {
166 if (!osm.isCachedStyleUpToDate() || scale <= 0) {
167 osm.setCachedStyle(StyleCache.EMPTY_STYLECACHE);
168 } else {
169 Pair<StyleElementList, Range> lst = osm.getCachedStyle().getWithRange(scale, osm.isSelected());
170 if (lst.a != null)
171 return lst;
172 }
173 Pair<StyleElementList, Range> p = getImpl(osm, scale, nc);
174 if (osm instanceof INode && isDefaultNodes()) {
175 if (p.a.isEmpty()) {
176 if (TextLabel.AUTO_LABEL_COMPOSITION_STRATEGY.compose(osm) != null) {
177 p.a = DefaultStyles.DEFAULT_NODE_STYLELIST_TEXT;
178 } else {
179 p.a = DefaultStyles.DEFAULT_NODE_STYLELIST;
180 }
181 } else {
182 boolean hasNonModifier = false;
183 boolean hasText = false;
184 for (StyleElement s : p.a) {
185 if (s instanceof BoxTextElement) {
186 hasText = true;
187 } else {
188 if (!s.isModifier) {
189 hasNonModifier = true;
190 }
191 }
192 }
193 if (!hasNonModifier) {
194 p.a = new StyleElementList(p.a, DefaultStyles.SIMPLE_NODE_ELEMSTYLE);
195 if (!hasText && TextLabel.AUTO_LABEL_COMPOSITION_STRATEGY.compose(osm) != null) {
196 p.a = new StyleElementList(p.a, DefaultStyles.SIMPLE_NODE_TEXT_ELEMSTYLE);
197 }
198 }
199 }
200 } else if (osm instanceof IWay && isDefaultLines()) {
201 boolean hasProperLineStyle = false;
202 for (StyleElement s : p.a) {
203 if (s.isProperLineStyle()) {
204 hasProperLineStyle = true;
205 break;
206 }
207 }
208 if (!hasProperLineStyle) {
209 LineElement line = LineElement.UNTAGGED_WAY;
210 for (StyleElement element : p.a) {
211 if (element instanceof AreaElement) {
212 line = LineElement.createSimpleLineStyle(((AreaElement) element).color, true);
213 break;
214 }
215 }
216 p.a = new StyleElementList(p.a, line);
217 }
218 }
219 StyleCache style = osm.getCachedStyle() != null ? osm.getCachedStyle() : StyleCache.EMPTY_STYLECACHE;
220 try {
221 osm.setCachedStyle(style.put(p.a, p.b, osm.isSelected()));
222 } catch (RangeViolatedError e) {
223 throw new AssertionError("Range violated: " + e.getMessage()
224 + " (object: " + osm.getPrimitiveId() + ", current style: " + osm.getCachedStyle()
225 + ", scale: " + scale + ", new stylelist: " + p.a + ", new range: " + p.b + ')', e);
226 }
227 osm.declareCachedStyleUpToDate();
228 return p;
229 }
230 }
231
232 /**
233 * Create the list of styles and its valid scale range for one primitive.
234 *
235 * This method does multipolygon handling.
236 *
237 * If the primitive is a way, look for multipolygon parents. In case it
238 * is indeed member of some multipolygon as role "outer", all area styles
239 * are removed. (They apply to the multipolygon area.)
240 * Outer ways can have their own independent line styles, e.g. a road as
241 * boundary of a forest. Otherwise, in case, the way does not have an
242 * independent line style, take a line style from the multipolygon.
243 * If the multipolygon does not have a line style either, at least create a
244 * default line style from the color of the area.
245 *
246 * Now consider the case that the way is not an outer way of any multipolygon,
247 * but is member of a multipolygon as "inner".
248 * First, the style list is regenerated, considering only tags of this way.
249 * Then check, if the way describes something in its own right. (linear feature
250 * or area) If not, add a default line style from the area color of the multipolygon.
251 *
252 * @param osm OSM primitive
253 * @param scale scale
254 * @param nc navigable component
255 * @return pair containing style list and range
256 */
257 private Pair<StyleElementList, Range> getImpl(IPrimitive osm, double scale, NavigatableComponent nc) {
258 if (osm instanceof INode)
259 return generateStyles(osm, scale, false);
260 else if (osm instanceof IWay) {
261 Pair<StyleElementList, Range> p = generateStyles(osm, scale, false);
262
263 boolean isOuterWayOfSomeMP = false;
264 Color wayColor = null;
265
266 // FIXME: Maybe in the future outer way styles apply to outers ignoring the multipolygon?
267 for (IPrimitive referrer : osm.getReferrers()) {
268 IRelation<?> r = (IRelation<?>) referrer;
269 if (!drawMultipolygon || !r.isMultipolygon() || !r.isUsable() || !(r instanceof Relation)) {
270 continue;
271 }
272 Multipolygon multipolygon = MultipolygonCache.getInstance().get((Relation) r);
273
274 if (multipolygon.getOuterWays().contains(osm)) {
275 boolean hasIndependentLineStyle = false;
276 if (!isOuterWayOfSomeMP) { // do this only one time
277 List<StyleElement> tmp = new ArrayList<>(p.a.size());
278 for (StyleElement s : p.a) {
279 if (s instanceof AreaElement) {
280 wayColor = ((AreaElement) s).color;
281 } else {
282 tmp.add(s);
283 if (s.isProperLineStyle()) {
284 hasIndependentLineStyle = true;
285 }
286 }
287 }
288 p.a = new StyleElementList(tmp);
289 isOuterWayOfSomeMP = true;
290 }
291
292 if (!hasIndependentLineStyle) {
293 Pair<StyleElementList, Range> mpElemStyles;
294 synchronized (r) {
295 mpElemStyles = getStyleCacheWithRange(r, scale, nc);
296 }
297 StyleElement mpLine = null;
298 for (StyleElement s : mpElemStyles.a) {
299 if (s.isProperLineStyle()) {
300 mpLine = s;
301 break;
302 }
303 }
304 p.b = Range.cut(p.b, mpElemStyles.b);
305 if (mpLine != null) {
306 p.a = new StyleElementList(p.a, mpLine);
307 break;
308 } else if (wayColor == null && isDefaultLines()) {
309 for (StyleElement element : mpElemStyles.a) {
310 if (element instanceof AreaElement) {
311 wayColor = ((AreaElement) element).color;
312 break;
313 }
314 }
315 }
316 }
317 }
318 }
319 if (isOuterWayOfSomeMP) {
320 if (isDefaultLines()) {
321 boolean hasLineStyle = false;
322 for (StyleElement s : p.a) {
323 if (s.isProperLineStyle()) {
324 hasLineStyle = true;
325 break;
326 }
327 }
328 if (!hasLineStyle) {
329 p.a = new StyleElementList(p.a, LineElement.createSimpleLineStyle(wayColor, true));
330 }
331 }
332 return p;
333 }
334
335 if (!isDefaultLines()) return p;
336
337 for (IPrimitive referrer : osm.getReferrers()) {
338 IRelation<?> ref = (IRelation<?>) referrer;
339 if (!drawMultipolygon || !ref.isMultipolygon() || !ref.isUsable() || !(ref instanceof Relation)) {
340 continue;
341 }
342 final Multipolygon multipolygon = MultipolygonCache.getInstance().get((Relation) ref);
343
344 if (multipolygon.getInnerWays().contains(osm)) {
345 p = generateStyles(osm, scale, false);
346 boolean hasIndependentElemStyle = false;
347 for (StyleElement s : p.a) {
348 if (s.isProperLineStyle() || s instanceof AreaElement) {
349 hasIndependentElemStyle = true;
350 break;
351 }
352 }
353 if (!hasIndependentElemStyle && !multipolygon.getOuterWays().isEmpty()) {
354 Color mpColor = null;
355 StyleElementList mpElemStyles;
356 synchronized (ref) {
357 mpElemStyles = get(ref, scale, nc);
358 }
359 for (StyleElement mpS : mpElemStyles) {
360 if (mpS instanceof AreaElement) {
361 mpColor = ((AreaElement) mpS).color;
362 break;
363 }
364 }
365 p.a = new StyleElementList(p.a, LineElement.createSimpleLineStyle(mpColor, true));
366 }
367 return p;
368 }
369 }
370 return p;
371 } else if (osm instanceof IRelation) {
372 return generateStyles(osm, scale, true);
373 }
374 return null;
375 }
376
377 /**
378 * Create the list of styles and its valid scale range for one primitive.
379 *
380 * Loops over the list of style sources, to generate the map of properties.
381 * From these properties, it generates the different types of styles.
382 *
383 * @param osm the primitive to create styles for
384 * @param scale the scale (in meters per 100 px), must be &gt; 0
385 * @param pretendWayIsClosed For styles that require the way to be closed,
386 * we pretend it is. This is useful for generating area styles from the (segmented)
387 * outer ways of a multipolygon.
388 * @return the generated styles and the valid range as a pair
389 * @since 13810 (signature)
390 */
391 public Pair<StyleElementList, Range> generateStyles(IPrimitive osm, double scale, boolean pretendWayIsClosed) {
392 List<StyleElement> sl = new ArrayList<>();
393 MultiCascade mc = new MultiCascade();
394 Environment env = new Environment(osm, mc, null, null);
395
396 for (StyleSource s : styleSources) {
397 if (s.active) {
398 s.apply(mc, osm, scale, pretendWayIsClosed);
399 }
400 }
401
402 for (Entry<String, Cascade> e : mc.getLayers()) {
403 if ("*".equals(e.getKey())) {
404 continue;
405 }
406 env.layer = e.getKey();
407 if (osm instanceof IWay) {
408 AreaElement areaStyle = AreaElement.create(env);
409 addIfNotNull(sl, areaStyle);
410 addIfNotNull(sl, RepeatImageElement.create(env));
411 addIfNotNull(sl, LineElement.createLine(env));
412 addIfNotNull(sl, LineElement.createLeftCasing(env));
413 addIfNotNull(sl, LineElement.createRightCasing(env));
414 addIfNotNull(sl, LineElement.createCasing(env));
415 addIfNotNull(sl, AreaIconElement.create(env));
416 addIfNotNull(sl, TextElement.create(env));
417 if (areaStyle != null) {
418 //TODO: Warn about this, or even remove it completely
419 addIfNotNull(sl, TextElement.createForContent(env));
420 }
421 } else if (osm instanceof INode) {
422 NodeElement nodeStyle = NodeElement.create(env);
423 if (nodeStyle != null) {
424 sl.add(nodeStyle);
425 addIfNotNull(sl, BoxTextElement.create(env, nodeStyle.getBoxProvider()));
426 } else {
427 addIfNotNull(sl, BoxTextElement.create(env, DefaultStyles.SIMPLE_NODE_ELEMSTYLE_BOXPROVIDER));
428 }
429 } else if (osm instanceof IRelation) {
430 if (((IRelation<?>) osm).isMultipolygon()) {
431 AreaElement areaStyle = AreaElement.create(env);
432 addIfNotNull(sl, areaStyle);
433 addIfNotNull(sl, RepeatImageElement.create(env));
434 addIfNotNull(sl, LineElement.createLine(env));
435 addIfNotNull(sl, LineElement.createCasing(env));
436 addIfNotNull(sl, AreaIconElement.create(env));
437 addIfNotNull(sl, TextElement.create(env));
438 if (areaStyle != null) {
439 //TODO: Warn about this, or even remove it completely
440 addIfNotNull(sl, TextElement.createForContent(env));
441 }
442 } else if (osm.hasTag("type", "restriction")) {
443 addIfNotNull(sl, NodeElement.create(env));
444 }
445 }
446 }
447 return new Pair<>(new StyleElementList(sl), mc.range);
448 }
449
450 private static <T> void addIfNotNull(List<T> list, T obj) {
451 if (obj != null) {
452 list.add(obj);
453 }
454 }
455
456 /**
457 * Draw a default node symbol for nodes that have no style?
458 * @return {@code true} if default node symbol must be drawn
459 */
460 private boolean isDefaultNodes() {
461 if (defaultNodesIdx == cacheIdx)
462 return defaultNodes;
463 defaultNodes = fromCanvas("default-points", Boolean.TRUE, Boolean.class);
464 defaultNodesIdx = cacheIdx;
465 return defaultNodes;
466 }
467
468 /**
469 * Draw a default line for ways that do not have an own line style?
470 * @return {@code true} if default line must be drawn
471 */
472 private boolean isDefaultLines() {
473 if (defaultLinesIdx == cacheIdx)
474 return defaultLines;
475 defaultLines = fromCanvas("default-lines", Boolean.TRUE, Boolean.class);
476 defaultLinesIdx = cacheIdx;
477 return defaultLines;
478 }
479
480 private <T> T fromCanvas(String key, T def, Class<T> c) {
481 MultiCascade mc = new MultiCascade();
482 Relation r = new Relation();
483 r.put("#canvas", "query");
484
485 for (StyleSource s : styleSources) {
486 if (s.active) {
487 s.apply(mc, r, 1, false);
488 }
489 }
490 return mc.getCascade("default").get(key, def, c);
491 }
492
493 /**
494 * Determines whether multipolygons must be drawn.
495 * @return whether multipolygons must be drawn.
496 */
497 public boolean isDrawMultipolygon() {
498 return drawMultipolygon;
499 }
500
501 /**
502 * Sets whether multipolygons must be drawn.
503 * @param drawMultipolygon whether multipolygons must be drawn
504 */
505 public void setDrawMultipolygon(boolean drawMultipolygon) {
506 this.drawMultipolygon = drawMultipolygon;
507 }
508
509 /**
510 * remove all style sources; only accessed from MapPaintStyles
511 */
512 void clear() {
513 styleSources.clear();
514 }
515
516 /**
517 * add a style source; only accessed from MapPaintStyles
518 * @param style style source to add
519 */
520 void add(StyleSource style) {
521 styleSources.add(Objects.requireNonNull(style));
522 }
523
524 /**
525 * remove a style source; only accessed from MapPaintStyles
526 * @param style style source to remove
527 * @return {@code true} if this list contained the specified element
528 */
529 boolean remove(StyleSource style) {
530 return styleSources.remove(Objects.requireNonNull(style));
531 }
532
533 /**
534 * set the style sources; only accessed from MapPaintStyles
535 * @param sources new style sources
536 */
537 void setStyleSources(Collection<StyleSource> sources) {
538 styleSources.clear();
539 sources.forEach(this::add);
540 }
541
542 /**
543 * Returns the first AreaElement for a given primitive.
544 * @param p the OSM primitive
545 * @param pretendWayIsClosed For styles that require the way to be closed,
546 * we pretend it is. This is useful for generating area styles from the (segmented)
547 * outer ways of a multipolygon.
548 * @return first AreaElement found or {@code null}.
549 * @since 13810 (signature)
550 */
551 public static AreaElement getAreaElemStyle(IPrimitive p, boolean pretendWayIsClosed) {
552 MapCSSStyleSource.STYLE_SOURCE_LOCK.readLock().lock();
553 try {
554 if (MapPaintStyles.getStyles() == null)
555 return null;
556 for (StyleElement s : MapPaintStyles.getStyles().generateStyles(p, 1.0, pretendWayIsClosed).a) {
557 if (s instanceof AreaElement)
558 return (AreaElement) s;
559 }
560 return null;
561 } finally {
562 MapCSSStyleSource.STYLE_SOURCE_LOCK.readLock().unlock();
563 }
564 }
565
566 /**
567 * Determines whether primitive has an AreaElement.
568 * @param p the OSM primitive
569 * @param pretendWayIsClosed For styles that require the way to be closed,
570 * we pretend it is. This is useful for generating area styles from the (segmented)
571 * outer ways of a multipolygon.
572 * @return {@code true} if primitive has an AreaElement
573 * @since 13810 (signature)
574 */
575 public static boolean hasAreaElemStyle(IPrimitive p, boolean pretendWayIsClosed) {
576 return getAreaElemStyle(p, pretendWayIsClosed) != null;
577 }
578
579 /**
580 * Determines whether primitive has area-type {@link StyleElement}s, but
581 * no line-type StyleElements.
582 *
583 * {@link TextElement} is ignored, as it can be both line and area-type.
584 * @param p the OSM primitive
585 * @return {@code true} if primitive has area elements, but no line elements
586 * @since 12700
587 * @since 13810 (signature)
588 */
589 public static boolean hasOnlyAreaElements(IPrimitive p) {
590 MapCSSStyleSource.STYLE_SOURCE_LOCK.readLock().lock();
591 try {
592 if (MapPaintStyles.getStyles() == null)
593 return false;
594 StyleElementList styles = MapPaintStyles.getStyles().generateStyles(p, 1.0, false).a;
595 boolean hasAreaElement = false;
596 for (StyleElement s : styles) {
597 if (s instanceof TextElement) {
598 continue;
599 }
600 if (s instanceof AreaElement) {
601 hasAreaElement = true;
602 } else {
603 return false;
604 }
605 }
606 return hasAreaElement;
607 } finally {
608 MapCSSStyleSource.STYLE_SOURCE_LOCK.readLock().unlock();
609 }
610 }
611
612 /**
613 * Looks up a preference value and ensures the style cache is invalidated
614 * as soon as this preference value is changed by the user.
615 *
616 * In addition, it adds an intermediate cache for the preference values,
617 * as frequent preference lookup (using <code>Config.getPref().get()</code>) for
618 * each primitive can be slow during rendering.
619 *
620 * If the default value can be {@linkplain Cascade#convertTo converted} to a {@link Color},
621 * the {@link NamedColorProperty} is retrieved as string.
622 *
623 * @param source style source
624 * @param key preference key
625 * @param def default value
626 * @return the corresponding preference value
627 * @see org.openstreetmap.josm.data.Preferences#get(String, String)
628 */
629 public String getPreferenceCached(StyleSource source, String key, String def) {
630 String res;
631 if (preferenceCache.containsKey(key)) {
632 res = preferenceCache.get(key);
633 } else {
634 Color realDef = Cascade.convertTo(def, Color.class);
635 if (realDef != null) {
636 String prefName = source != null ? source.getFileNamePart() : "unknown";
637 NamedColorProperty property = new NamedColorProperty(NamedColorProperty.COLOR_CATEGORY_MAPPAINT, prefName, key, realDef);
638 res = ColorHelper.color2html(property.get());
639 } else {
640 res = Config.getPref().get(key, null);
641 }
642 preferenceCache.put(key, res);
643 }
644 return res != null ? res : def;
645 }
646
647 @Override
648 public void preferenceChanged(PreferenceChangeEvent e) {
649 if (preferenceCache.containsKey(e.getKey())) {
650 clearCached();
651 }
652 }
653}
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