source: josm/trunk/src/org/openstreetmap/josm/gui/history/HistoryBrowserModel.java@ 10194

Last change on this file since 10194 was 10194, checked in by Don-vip, 8 years ago

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1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.gui.history;
3
4import static org.openstreetmap.josm.tools.I18n.tr;
5
6import java.text.DateFormat;
7import java.util.ArrayList;
8import java.util.Collections;
9import java.util.HashSet;
10import java.util.List;
11import java.util.Observable;
12import java.util.Set;
13
14import javax.swing.JTable;
15import javax.swing.table.AbstractTableModel;
16import javax.swing.table.TableModel;
17
18import org.openstreetmap.josm.Main;
19import org.openstreetmap.josm.data.osm.Node;
20import org.openstreetmap.josm.data.osm.OsmPrimitive;
21import org.openstreetmap.josm.data.osm.OsmPrimitiveType;
22import org.openstreetmap.josm.data.osm.Relation;
23import org.openstreetmap.josm.data.osm.RelationMember;
24import org.openstreetmap.josm.data.osm.RelationMemberData;
25import org.openstreetmap.josm.data.osm.User;
26import org.openstreetmap.josm.data.osm.UserInfo;
27import org.openstreetmap.josm.data.osm.Way;
28import org.openstreetmap.josm.data.osm.event.AbstractDatasetChangedEvent;
29import org.openstreetmap.josm.data.osm.event.DataChangedEvent;
30import org.openstreetmap.josm.data.osm.event.DataSetListener;
31import org.openstreetmap.josm.data.osm.event.NodeMovedEvent;
32import org.openstreetmap.josm.data.osm.event.PrimitivesAddedEvent;
33import org.openstreetmap.josm.data.osm.event.PrimitivesRemovedEvent;
34import org.openstreetmap.josm.data.osm.event.RelationMembersChangedEvent;
35import org.openstreetmap.josm.data.osm.event.TagsChangedEvent;
36import org.openstreetmap.josm.data.osm.event.WayNodesChangedEvent;
37import org.openstreetmap.josm.data.osm.history.History;
38import org.openstreetmap.josm.data.osm.history.HistoryNode;
39import org.openstreetmap.josm.data.osm.history.HistoryOsmPrimitive;
40import org.openstreetmap.josm.data.osm.history.HistoryRelation;
41import org.openstreetmap.josm.data.osm.history.HistoryWay;
42import org.openstreetmap.josm.data.osm.visitor.AbstractVisitor;
43import org.openstreetmap.josm.gui.JosmUserIdentityManager;
44import org.openstreetmap.josm.gui.MapView;
45import org.openstreetmap.josm.gui.MapView.LayerChangeListener;
46import org.openstreetmap.josm.gui.layer.Layer;
47import org.openstreetmap.josm.gui.layer.OsmDataLayer;
48import org.openstreetmap.josm.tools.CheckParameterUtil;
49import org.openstreetmap.josm.tools.date.DateUtils;
50
51/**
52 * This is the model used by the history browser.
53 *
54 * The model state consists of the following elements:
55 * <ul>
56 * <li>the {@link History} of a specific {@link OsmPrimitive}</li>
57 * <li>a dedicated version in this {@link History} called the {@link PointInTimeType#REFERENCE_POINT_IN_TIME}</li>
58 * <li>another version in this {@link History} called the {@link PointInTimeType#CURRENT_POINT_IN_TIME}</li>
59 * </ul>
60 * {@link HistoryBrowser} always compares the {@link PointInTimeType#REFERENCE_POINT_IN_TIME} with the
61 * {@link PointInTimeType#CURRENT_POINT_IN_TIME}.
62
63 * This model provides various {@link TableModel}s for {@link JTable}s used in {@link HistoryBrowser}, for
64 * instance:
65 * <ul>
66 * <li>{@link #getTagTableModel(PointInTimeType)} replies a {@link TableModel} for the tags of either of
67 * the two selected versions</li>
68 * <li>{@link #getNodeListTableModel(PointInTimeType)} replies a {@link TableModel} for the list of nodes of
69 * the two selected versions (if the current history provides information about a {@link Way}</li>
70 * <li> {@link #getRelationMemberTableModel(PointInTimeType)} replies a {@link TableModel} for the list of relation
71 * members of the two selected versions (if the current history provides information about a {@link Relation}</li>
72 * </ul>
73 *
74 * @see HistoryBrowser
75 */
76public class HistoryBrowserModel extends Observable implements LayerChangeListener, DataSetListener {
77 /** the history of an OsmPrimitive */
78 private History history;
79 private HistoryOsmPrimitive reference;
80 private HistoryOsmPrimitive current;
81 /**
82 * latest isn't a reference of history. It's a clone of the currently edited
83 * {@link OsmPrimitive} in the current edit layer.
84 */
85 private HistoryOsmPrimitive latest;
86
87 private final VersionTableModel versionTableModel;
88 private final TagTableModel currentTagTableModel;
89 private final TagTableModel referenceTagTableModel;
90 private final DiffTableModel currentRelationMemberTableModel;
91 private final DiffTableModel referenceRelationMemberTableModel;
92 private final DiffTableModel referenceNodeListTableModel;
93 private final DiffTableModel currentNodeListTableModel;
94
95 /**
96 * constructor
97 */
98 public HistoryBrowserModel() {
99 versionTableModel = new VersionTableModel();
100 currentTagTableModel = new TagTableModel(PointInTimeType.CURRENT_POINT_IN_TIME);
101 referenceTagTableModel = new TagTableModel(PointInTimeType.REFERENCE_POINT_IN_TIME);
102 referenceNodeListTableModel = new DiffTableModel();
103 currentNodeListTableModel = new DiffTableModel();
104 currentRelationMemberTableModel = new DiffTableModel();
105 referenceRelationMemberTableModel = new DiffTableModel();
106
107 if (Main.main != null) {
108 OsmDataLayer editLayer = Main.main.getEditLayer();
109 if (editLayer != null) {
110 editLayer.data.addDataSetListener(this);
111 }
112 }
113 MapView.addLayerChangeListener(this);
114 }
115
116 /**
117 * Creates a new history browser model for a given history.
118 *
119 * @param history the history. Must not be null.
120 * @throws IllegalArgumentException if history is null
121 */
122 public HistoryBrowserModel(History history) {
123 this();
124 CheckParameterUtil.ensureParameterNotNull(history, "history");
125 setHistory(history);
126 }
127
128 /**
129 * replies the history managed by this model
130 * @return the history
131 */
132 public History getHistory() {
133 return history;
134 }
135
136 protected boolean canShowAsLatest(OsmPrimitive primitive) {
137 if (primitive == null)
138 return false;
139 if (primitive.isNew() || !primitive.isUsable())
140 return false;
141
142 //try creating a history primitive. if that fails, the primitive cannot be used.
143 try {
144 HistoryOsmPrimitive.forOsmPrimitive(primitive);
145 } catch (Exception ign) {
146 return false;
147 }
148
149 if (history == null)
150 return false;
151 // only show latest of the same version if it is modified
152 if (history.getByVersion(primitive.getVersion()) != null)
153 return primitive.isModified();
154
155 // if latest version from history is higher than a non existing primitive version,
156 // that means this version has been redacted and the primitive cannot be used.
157 if (history.getLatest().getVersion() > primitive.getVersion())
158 return false;
159
160 // latest has a higher version than one of the primitives
161 // in the history (probably because the history got out of sync
162 // with uploaded data) -> show the primitive as latest
163 return true;
164 }
165
166 /**
167 * sets the history to be managed by this model
168 *
169 * @param history the history
170 *
171 */
172 public void setHistory(History history) {
173 this.history = history;
174 if (history.getNumVersions() > 0) {
175 HistoryOsmPrimitive newLatest = null;
176 OsmDataLayer editLayer = Main.main.getEditLayer();
177 if (editLayer != null) {
178 OsmPrimitive p = editLayer.data.getPrimitiveById(history.getId(), history.getType());
179 if (canShowAsLatest(p)) {
180 newLatest = new HistoryPrimitiveBuilder().build(p);
181 }
182 }
183 if (newLatest == null) {
184 current = history.getLatest();
185 int prevIndex = history.getNumVersions() - 2;
186 reference = prevIndex < 0 ? history.getEarliest() : history.get(prevIndex);
187 } else {
188 reference = history.getLatest();
189 current = newLatest;
190 }
191 setLatest(newLatest);
192 }
193 initTagTableModels();
194 fireModelChange();
195 }
196
197 protected void fireModelChange() {
198 initNodeListTableModels();
199 initMemberListTableModels();
200 setChanged();
201 notifyObservers();
202 versionTableModel.fireTableDataChanged();
203 }
204
205 /**
206 * Replies the table model to be used in a {@link JTable} which
207 * shows the list of versions in this history.
208 *
209 * @return the table model
210 */
211 public VersionTableModel getVersionTableModel() {
212 return versionTableModel;
213 }
214
215 protected void initTagTableModels() {
216 currentTagTableModel.initKeyList();
217 referenceTagTableModel.initKeyList();
218 }
219
220 /**
221 * Should be called everytime either reference of current changes to update the diff.
222 * TODO: Maybe rename to reflect this? eg. updateNodeListTableModels
223 */
224 protected void initNodeListTableModels() {
225 if (current == null || current.getType() != OsmPrimitiveType.WAY
226 || reference == null || reference.getType() != OsmPrimitiveType.WAY)
227 return;
228 TwoColumnDiff diff = new TwoColumnDiff(
229 ((HistoryWay) reference).getNodes().toArray(),
230 ((HistoryWay) current).getNodes().toArray());
231 referenceNodeListTableModel.setRows(diff.referenceDiff, diff.referenceReversed);
232 currentNodeListTableModel.setRows(diff.currentDiff, false);
233 }
234
235 protected void initMemberListTableModels() {
236 if (current == null || current.getType() != OsmPrimitiveType.RELATION
237 || reference == null || reference.getType() != OsmPrimitiveType.RELATION)
238 return;
239 TwoColumnDiff diff = new TwoColumnDiff(
240 ((HistoryRelation) reference).getMembers().toArray(),
241 ((HistoryRelation) current).getMembers().toArray());
242 referenceRelationMemberTableModel.setRows(diff.referenceDiff, diff.referenceReversed);
243 currentRelationMemberTableModel.setRows(diff.currentDiff, false);
244 }
245
246 /**
247 * Replies the tag table model for the respective point in time.
248 *
249 * @param pointInTimeType the type of the point in time (must not be null)
250 * @return the tag table model
251 * @throws IllegalArgumentException if pointInTimeType is null
252 */
253 public TagTableModel getTagTableModel(PointInTimeType pointInTimeType) {
254 CheckParameterUtil.ensureParameterNotNull(pointInTimeType, "pointInTimeType");
255 if (pointInTimeType.equals(PointInTimeType.CURRENT_POINT_IN_TIME))
256 return currentTagTableModel;
257 else // REFERENCE_POINT_IN_TIME
258 return referenceTagTableModel;
259 }
260
261 /**
262 * Replies the node list table model for the respective point in time.
263 *
264 * @param pointInTimeType the type of the point in time (must not be null)
265 * @return the node list table model
266 * @throws IllegalArgumentException if pointInTimeType is null
267 */
268 public DiffTableModel getNodeListTableModel(PointInTimeType pointInTimeType) {
269 CheckParameterUtil.ensureParameterNotNull(pointInTimeType, "pointInTimeType");
270 if (pointInTimeType.equals(PointInTimeType.CURRENT_POINT_IN_TIME))
271 return currentNodeListTableModel;
272 else // REFERENCE_POINT_IN_TIME
273 return referenceNodeListTableModel;
274 }
275
276 /**
277 * Replies the relation member table model for the respective point in time.
278 *
279 * @param pointInTimeType the type of the point in time (must not be null)
280 * @return the relation member table model
281 * @throws IllegalArgumentException if pointInTimeType is null
282 */
283 public DiffTableModel getRelationMemberTableModel(PointInTimeType pointInTimeType) {
284 CheckParameterUtil.ensureParameterNotNull(pointInTimeType, "pointInTimeType");
285 if (pointInTimeType.equals(PointInTimeType.CURRENT_POINT_IN_TIME))
286 return currentRelationMemberTableModel;
287 else // REFERENCE_POINT_IN_TIME
288 return referenceRelationMemberTableModel;
289 }
290
291 /**
292 * Sets the {@link HistoryOsmPrimitive} which plays the role of a reference point
293 * in time (see {@link PointInTimeType}).
294 *
295 * @param reference the reference history primitive. Must not be null.
296 * @throws IllegalArgumentException if reference is null
297 * @throws IllegalStateException if this model isn't a assigned a history yet
298 * @throws IllegalArgumentException if reference isn't an history primitive for the history managed by this mode
299 *
300 * @see #setHistory(History)
301 * @see PointInTimeType
302 */
303 public void setReferencePointInTime(HistoryOsmPrimitive reference) {
304 CheckParameterUtil.ensureParameterNotNull(reference, "reference");
305 if (history == null)
306 throw new IllegalStateException(tr("History not initialized yet. Failed to set reference primitive."));
307 if (reference.getId() != history.getId())
308 throw new IllegalArgumentException(
309 tr("Failed to set reference. Reference ID {0} does not match history ID {1}.", reference.getId(), history.getId()));
310 HistoryOsmPrimitive primitive = history.getByVersion(reference.getVersion());
311 if (primitive == null)
312 throw new IllegalArgumentException(
313 tr("Failed to set reference. Reference version {0} not available in history.", reference.getVersion()));
314
315 this.reference = reference;
316 initTagTableModels();
317 initNodeListTableModels();
318 initMemberListTableModels();
319 setChanged();
320 notifyObservers();
321 }
322
323 /**
324 * Sets the {@link HistoryOsmPrimitive} which plays the role of the current point
325 * in time (see {@link PointInTimeType}).
326 *
327 * @param current the reference history primitive. Must not be {@code null}.
328 * @throws IllegalArgumentException if reference is {@code null}
329 * @throws IllegalStateException if this model isn't a assigned a history yet
330 * @throws IllegalArgumentException if reference isn't an history primitive for the history managed by this mode
331 *
332 * @see #setHistory(History)
333 * @see PointInTimeType
334 */
335 public void setCurrentPointInTime(HistoryOsmPrimitive current) {
336 CheckParameterUtil.ensureParameterNotNull(current, "current");
337 if (history == null)
338 throw new IllegalStateException(tr("History not initialized yet. Failed to set current primitive."));
339 if (current.getId() != history.getId())
340 throw new IllegalArgumentException(
341 tr("Failed to set reference. Reference ID {0} does not match history ID {1}.", current.getId(), history.getId()));
342 HistoryOsmPrimitive primitive = history.getByVersion(current.getVersion());
343 if (primitive == null)
344 throw new IllegalArgumentException(
345 tr("Failed to set current primitive. Current version {0} not available in history.", current.getVersion()));
346 this.current = current;
347 initTagTableModels();
348 initNodeListTableModels();
349 initMemberListTableModels();
350 setChanged();
351 notifyObservers();
352 }
353
354 /**
355 * Replies the history OSM primitive for the {@link PointInTimeType#CURRENT_POINT_IN_TIME}
356 *
357 * @return the history OSM primitive for the {@link PointInTimeType#CURRENT_POINT_IN_TIME} (may be null)
358 */
359 public HistoryOsmPrimitive getCurrentPointInTime() {
360 return getPointInTime(PointInTimeType.CURRENT_POINT_IN_TIME);
361 }
362
363 /**
364 * Replies the history OSM primitive for the {@link PointInTimeType#REFERENCE_POINT_IN_TIME}
365 *
366 * @return the history OSM primitive for the {@link PointInTimeType#REFERENCE_POINT_IN_TIME} (may be null)
367 */
368 public HistoryOsmPrimitive getReferencePointInTime() {
369 return getPointInTime(PointInTimeType.REFERENCE_POINT_IN_TIME);
370 }
371
372 /**
373 * replies the history OSM primitive for a given point in time
374 *
375 * @param type the type of the point in time (must not be null)
376 * @return the respective primitive. Can be null.
377 * @throws IllegalArgumentException if type is null
378 */
379 public HistoryOsmPrimitive getPointInTime(PointInTimeType type) {
380 CheckParameterUtil.ensureParameterNotNull(type, "type");
381 if (type.equals(PointInTimeType.CURRENT_POINT_IN_TIME))
382 return current;
383 else if (type.equals(PointInTimeType.REFERENCE_POINT_IN_TIME))
384 return reference;
385
386 // should not happen
387 return null;
388 }
389
390 /**
391 * Returns true if <code>primitive</code> is the latest primitive
392 * representing the version currently edited in the current data
393 * layer.
394 *
395 * @param primitive the primitive to check
396 * @return true if <code>primitive</code> is the latest primitive
397 */
398 public boolean isLatest(HistoryOsmPrimitive primitive) {
399 if (primitive == null)
400 return false;
401 return primitive == latest;
402 }
403
404 /**
405 * The table model for the list of versions in the current history
406 *
407 */
408 public final class VersionTableModel extends AbstractTableModel {
409
410 private VersionTableModel() {
411 }
412
413 @Override
414 public int getRowCount() {
415 if (history == null)
416 return 0;
417 int ret = history.getNumVersions();
418 if (latest != null) {
419 ret++;
420 }
421 return ret;
422 }
423
424 @Override
425 public Object getValueAt(int row, int column) {
426 switch (column) {
427 case 0:
428 return Long.toString(getPrimitive(row).getVersion());
429 case 1:
430 return isReferencePointInTime(row);
431 case 2:
432 return isCurrentPointInTime(row);
433 case 3:
434 HistoryOsmPrimitive p3 = getPrimitive(row);
435 if (p3 != null && p3.getTimestamp() != null)
436 return DateUtils.formatDateTime(p3.getTimestamp(), DateFormat.SHORT, DateFormat.SHORT);
437 return null;
438 case 4:
439 HistoryOsmPrimitive p4 = getPrimitive(row);
440 if (p4 != null) {
441 User user = p4.getUser();
442 if (user != null)
443 return user.getName();
444 }
445 return null;
446 }
447 return null;
448 }
449
450 @Override
451 public void setValueAt(Object aValue, int row, int column) {
452 if (!((Boolean) aValue))
453 return;
454 switch (column) {
455 case 1:
456 setReferencePointInTime(row);
457 break;
458 case 2:
459 setCurrentPointInTime(row);
460 break;
461 default:
462 return;
463 }
464 fireTableDataChanged();
465 }
466
467 @Override
468 public boolean isCellEditable(int row, int column) {
469 return column >= 1 && column <= 2;
470 }
471
472 public void setReferencePointInTime(int row) {
473 if (history == null)
474 return;
475 if (row == history.getNumVersions()) {
476 if (latest != null) {
477 HistoryBrowserModel.this.setReferencePointInTime(latest);
478 }
479 return;
480 }
481 if (row < 0 || row > history.getNumVersions())
482 return;
483 HistoryOsmPrimitive reference = history.get(row);
484 HistoryBrowserModel.this.setReferencePointInTime(reference);
485 }
486
487 public void setCurrentPointInTime(int row) {
488 if (history == null)
489 return;
490 if (row == history.getNumVersions()) {
491 if (latest != null) {
492 HistoryBrowserModel.this.setCurrentPointInTime(latest);
493 }
494 return;
495 }
496 if (row < 0 || row > history.getNumVersions())
497 return;
498 HistoryOsmPrimitive current = history.get(row);
499 HistoryBrowserModel.this.setCurrentPointInTime(current);
500 }
501
502 public boolean isReferencePointInTime(int row) {
503 if (history == null)
504 return false;
505 if (row == history.getNumVersions())
506 return latest == reference;
507 if (row < 0 || row > history.getNumVersions())
508 return false;
509 HistoryOsmPrimitive p = history.get(row);
510 return p == reference;
511 }
512
513 public boolean isCurrentPointInTime(int row) {
514 if (history == null)
515 return false;
516 if (row == history.getNumVersions())
517 return latest == current;
518 if (row < 0 || row > history.getNumVersions())
519 return false;
520 HistoryOsmPrimitive p = history.get(row);
521 return p == current;
522 }
523
524 public HistoryOsmPrimitive getPrimitive(int row) {
525 if (history == null)
526 return null;
527 return isLatest(row) ? latest : history.get(row);
528 }
529
530 public boolean isLatest(int row) {
531 return row >= history.getNumVersions();
532 }
533
534 public OsmPrimitive getLatest() {
535 if (latest == null)
536 return null;
537 OsmDataLayer editLayer = Main.main.getEditLayer();
538 if (editLayer == null)
539 return null;
540 return editLayer.data.getPrimitiveById(latest.getId(), latest.getType());
541 }
542
543 @Override
544 public int getColumnCount() {
545 return 6;
546 }
547 }
548
549 /**
550 * The table model for the tags of the version at {@link PointInTimeType#REFERENCE_POINT_IN_TIME}
551 * or {@link PointInTimeType#CURRENT_POINT_IN_TIME}
552 *
553 */
554 public class TagTableModel extends AbstractTableModel {
555
556 private List<String> keys;
557 private final PointInTimeType pointInTimeType;
558
559 protected TagTableModel(PointInTimeType type) {
560 pointInTimeType = type;
561 initKeyList();
562 }
563
564 protected void initKeyList() {
565 Set<String> keySet = new HashSet<>();
566 if (current != null) {
567 keySet.addAll(current.getTags().keySet());
568 }
569 if (reference != null) {
570 keySet.addAll(reference.getTags().keySet());
571 }
572 keys = new ArrayList<>(keySet);
573 Collections.sort(keys);
574 fireTableDataChanged();
575 }
576
577 @Override
578 public int getRowCount() {
579 if (keys == null)
580 return 0;
581 return keys.size();
582 }
583
584 @Override
585 public Object getValueAt(int row, int column) {
586 return keys.get(row);
587 }
588
589 public boolean hasTag(String key) {
590 HistoryOsmPrimitive primitive = getPointInTime(pointInTimeType);
591 if (primitive == null)
592 return false;
593 return primitive.hasTag(key);
594 }
595
596 public String getValue(String key) {
597 HistoryOsmPrimitive primitive = getPointInTime(pointInTimeType);
598 if (primitive == null)
599 return null;
600 return primitive.get(key);
601 }
602
603 public boolean oppositeHasTag(String key) {
604 PointInTimeType opposite = pointInTimeType.opposite();
605 HistoryOsmPrimitive primitive = getPointInTime(opposite);
606 if (primitive == null)
607 return false;
608 return primitive.hasTag(key);
609 }
610
611 public String getOppositeValue(String key) {
612 PointInTimeType opposite = pointInTimeType.opposite();
613 HistoryOsmPrimitive primitive = getPointInTime(opposite);
614 if (primitive == null)
615 return null;
616 return primitive.get(key);
617 }
618
619 public boolean hasSameValueAsOpposite(String key) {
620 String value = getValue(key);
621 String oppositeValue = getOppositeValue(key);
622 if (value == null || oppositeValue == null)
623 return false;
624 return value.equals(oppositeValue);
625 }
626
627 public PointInTimeType getPointInTimeType() {
628 return pointInTimeType;
629 }
630
631 public boolean isCurrentPointInTime() {
632 return pointInTimeType.equals(PointInTimeType.CURRENT_POINT_IN_TIME);
633 }
634
635 public boolean isReferencePointInTime() {
636 return pointInTimeType.equals(PointInTimeType.REFERENCE_POINT_IN_TIME);
637 }
638
639 @Override
640 public int getColumnCount() {
641 return 1;
642 }
643 }
644
645 protected void setLatest(HistoryOsmPrimitive latest) {
646 if (latest == null) {
647 if (this.current == this.latest) {
648 this.current = history != null ? history.getLatest() : null;
649 }
650 if (this.reference == this.latest) {
651 this.reference = history != null ? history.getLatest() : null;
652 }
653 this.latest = null;
654 } else {
655 if (this.current == this.latest) {
656 this.current = latest;
657 }
658 if (this.reference == this.latest) {
659 this.reference = latest;
660 }
661 this.latest = latest;
662 }
663 fireModelChange();
664 }
665
666 /**
667 * Removes this model as listener for data change and layer change events.
668 *
669 */
670 public void unlinkAsListener() {
671 OsmDataLayer editLayer = Main.main.getEditLayer();
672 if (editLayer != null) {
673 editLayer.data.removeDataSetListener(this);
674 }
675 MapView.removeLayerChangeListener(this);
676 }
677
678 /* ---------------------------------------------------------------------- */
679 /* DataSetListener */
680 /* ---------------------------------------------------------------------- */
681 @Override
682 public void nodeMoved(NodeMovedEvent event) {
683 Node node = event.getNode();
684 if (!node.isNew() && node.getId() == history.getId()) {
685 setLatest(new HistoryPrimitiveBuilder().build(node));
686 }
687 }
688
689 @Override
690 public void primitivesAdded(PrimitivesAddedEvent event) {
691 for (OsmPrimitive p: event.getPrimitives()) {
692 if (canShowAsLatest(p)) {
693 setLatest(new HistoryPrimitiveBuilder().build(p));
694 }
695 }
696 }
697
698 @Override
699 public void primitivesRemoved(PrimitivesRemovedEvent event) {
700 for (OsmPrimitive p: event.getPrimitives()) {
701 if (!p.isNew() && p.getId() == history.getId()) {
702 setLatest(null);
703 }
704 }
705 }
706
707 @Override
708 public void relationMembersChanged(RelationMembersChangedEvent event) {
709 Relation r = event.getRelation();
710 if (!r.isNew() && r.getId() == history.getId()) {
711 setLatest(new HistoryPrimitiveBuilder().build(r));
712 }
713 }
714
715 @Override
716 public void tagsChanged(TagsChangedEvent event) {
717 OsmPrimitive prim = event.getPrimitive();
718 if (!prim.isNew() && prim.getId() == history.getId()) {
719 setLatest(new HistoryPrimitiveBuilder().build(prim));
720 }
721 }
722
723 @Override
724 public void wayNodesChanged(WayNodesChangedEvent event) {
725 Way way = event.getChangedWay();
726 if (!way.isNew() && way.getId() == history.getId()) {
727 setLatest(new HistoryPrimitiveBuilder().build(way));
728 }
729 }
730
731 @Override
732 public void dataChanged(DataChangedEvent event) {
733 if (history == null)
734 return;
735 OsmPrimitive primitive = event.getDataset().getPrimitiveById(history.getId(), history.getType());
736 HistoryOsmPrimitive latest;
737 if (canShowAsLatest(primitive)) {
738 latest = new HistoryPrimitiveBuilder().build(primitive);
739 } else {
740 latest = null;
741 }
742 setLatest(latest);
743 fireModelChange();
744 }
745
746 @Override
747 public void otherDatasetChange(AbstractDatasetChangedEvent event) {
748 // Irrelevant
749 }
750
751 /* ---------------------------------------------------------------------- */
752 /* LayerChangeListener */
753 /* ---------------------------------------------------------------------- */
754 @Override
755 public void activeLayerChange(Layer oldLayer, Layer newLayer) {
756 if (oldLayer instanceof OsmDataLayer) {
757 OsmDataLayer l = (OsmDataLayer) oldLayer;
758 l.data.removeDataSetListener(this);
759 }
760 if (!(newLayer instanceof OsmDataLayer)) {
761 latest = null;
762 fireModelChange();
763 return;
764 }
765 OsmDataLayer l = (OsmDataLayer) newLayer;
766 l.data.addDataSetListener(this);
767 OsmPrimitive primitive = history != null ? l.data.getPrimitiveById(history.getId(), history.getType()) : null;
768 HistoryOsmPrimitive latest;
769 if (canShowAsLatest(primitive)) {
770 latest = new HistoryPrimitiveBuilder().build(primitive);
771 } else {
772 latest = null;
773 }
774 setLatest(latest);
775 fireModelChange();
776 }
777
778 @Override
779 public void layerAdded(Layer newLayer) {
780 // Do nothing
781 }
782
783 @Override
784 public void layerRemoved(Layer oldLayer) {
785 // Do nothing
786 }
787
788 /**
789 * Creates a {@link HistoryOsmPrimitive} from a {@link OsmPrimitive}
790 *
791 */
792 static class HistoryPrimitiveBuilder extends AbstractVisitor {
793 private HistoryOsmPrimitive clone;
794
795 @Override
796 public void visit(Node n) {
797 clone = new HistoryNode(n.getId(), n.getVersion(), n.isVisible(), getCurrentUser(), 0, null, n.getCoor(), false);
798 clone.setTags(n.getKeys());
799 }
800
801 @Override
802 public void visit(Relation r) {
803 clone = new HistoryRelation(r.getId(), r.getVersion(), r.isVisible(), getCurrentUser(), 0, null, false);
804 clone.setTags(r.getKeys());
805 HistoryRelation hr = (HistoryRelation) clone;
806 for (RelationMember rm : r.getMembers()) {
807 hr.addMember(new RelationMemberData(rm.getRole(), rm.getType(), rm.getUniqueId()));
808 }
809 }
810
811 @Override
812 public void visit(Way w) {
813 clone = new HistoryWay(w.getId(), w.getVersion(), w.isVisible(), getCurrentUser(), 0, null, false);
814 clone.setTags(w.getKeys());
815 for (Node n: w.getNodes()) {
816 ((HistoryWay) clone).addNode(n.getUniqueId());
817 }
818 }
819
820 private static User getCurrentUser() {
821 UserInfo info = JosmUserIdentityManager.getInstance().getUserInfo();
822 return info == null ? User.getAnonymous() : User.createOsmUser(info.getId(), info.getDisplayName());
823 }
824
825 public HistoryOsmPrimitive build(OsmPrimitive primitive) {
826 primitive.accept(this);
827 return clone;
828 }
829 }
830}
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