source: josm/trunk/src/org/openstreetmap/josm/gui/history/HistoryBrowserModel.java@ 4498

Last change on this file since 4498 was 4498, checked in by simon04, 13 years ago

see #6774 - Make History dialog more diff-like (patch by olejorgenb)
  • Property svn:eol-style set to native
File size: 35.9 KB
Line 
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.util.ArrayList;
7import java.util.Collections;
8import java.util.HashSet;
9import java.util.List;
10import java.util.Observable;
11
12import javax.swing.table.AbstractTableModel;
13
14import org.openstreetmap.josm.Main;
15import org.openstreetmap.josm.data.osm.Node;
16import org.openstreetmap.josm.data.osm.OsmPrimitive;
17import org.openstreetmap.josm.data.osm.OsmPrimitiveType;
18import org.openstreetmap.josm.data.osm.Relation;
19import org.openstreetmap.josm.data.osm.RelationMember;
20import org.openstreetmap.josm.data.osm.Way;
21import org.openstreetmap.josm.data.osm.event.AbstractDatasetChangedEvent;
22import org.openstreetmap.josm.data.osm.event.DataChangedEvent;
23import org.openstreetmap.josm.data.osm.event.DataSetListener;
24import org.openstreetmap.josm.data.osm.event.NodeMovedEvent;
25import org.openstreetmap.josm.data.osm.event.PrimitivesAddedEvent;
26import org.openstreetmap.josm.data.osm.event.PrimitivesRemovedEvent;
27import org.openstreetmap.josm.data.osm.event.RelationMembersChangedEvent;
28import org.openstreetmap.josm.data.osm.event.TagsChangedEvent;
29import org.openstreetmap.josm.data.osm.event.WayNodesChangedEvent;
30import org.openstreetmap.josm.data.osm.history.History;
31import org.openstreetmap.josm.data.osm.history.HistoryNode;
32import org.openstreetmap.josm.data.osm.history.HistoryOsmPrimitive;
33import org.openstreetmap.josm.data.osm.history.HistoryRelation;
34import org.openstreetmap.josm.data.osm.history.HistoryWay;
35import org.openstreetmap.josm.data.osm.visitor.AbstractVisitor;
36import org.openstreetmap.josm.gui.MapView;
37import org.openstreetmap.josm.gui.MapView.LayerChangeListener;
38import org.openstreetmap.josm.gui.layer.Layer;
39import org.openstreetmap.josm.gui.layer.OsmDataLayer;
40import org.openstreetmap.josm.tools.CheckParameterUtil;
41import org.openstreetmap.josm.tools.Diff;
42
43/**
44 * This is the model used by the history browser.
45 *
46 * The model state consists of the following elements:
47 * <ul>
48 * <li>the {@see History} of a specific {@see OsmPrimitive}</li>
49 * <li>a dedicated version in this {@see History} called the {@see PointInTimeType#REFERENCE_POINT_IN_TIME}</li>
50 * <li>another version in this {@see History} called the {@see PointInTimeType#CURRENT_POINT_IN_TIME}</li>
51 * <ul>
52 * {@see HistoryBrowser} always compares the {@see PointInTimeType#REFERENCE_POINT_IN_TIME} with the
53 * {@see PointInTimeType#CURRENT_POINT_IN_TIME}.
54
55 * This model provides various {@see TableModel}s for {@see JTable}s used in {@see HistoryBrowser}, for
56 * instance:
57 * <ul>
58 * <li>{@see #getTagTableModel(PointInTimeType)} replies a {@see TableModel} for the tags of either of
59 * the two selected versions</li>
60 * <li>{@see #getNodeListTableModel(PointInTimeType)} replies a {@see TableModel} for the list of nodes of
61 * the two selected versions (if the current history provides information about a {@see Way}</li>
62 * <li> {@see #getRelationMemberTableModel(PointInTimeType)} replies a {@see TableModel} for the list of relation
63 * members of the two selected versions (if the current history provides information about a {@see Relation}</li>
64 * </ul>
65 *
66 * @see HistoryBrowser
67 */
68public class HistoryBrowserModel extends Observable implements LayerChangeListener, DataSetListener {
69 /** the history of an OsmPrimitive */
70 private History history;
71 private HistoryOsmPrimitive reference;
72 private HistoryOsmPrimitive current;
73 /**
74 * latest isn't a reference of history. It's a clone of the currently edited
75 * {@see OsmPrimitive} in the current edit layer.
76 */
77 private HistoryOsmPrimitive latest;
78
79 private VersionTableModel versionTableModel;
80 private TagTableModel currentTagTableModel;
81 private TagTableModel referenceTagTableModel;
82 private RelationMemberTableModel currentRelationMemberTableModel;
83 private RelationMemberTableModel referenceRelationMemberTableModel;
84 private DiffTableModel referenceNodeListTableModel;
85 private DiffTableModel currentNodeListTableModel;
86
87 /**
88 * constructor
89 */
90 public HistoryBrowserModel() {
91 versionTableModel = new VersionTableModel();
92 currentTagTableModel = new TagTableModel(PointInTimeType.CURRENT_POINT_IN_TIME);
93 referenceTagTableModel = new TagTableModel(PointInTimeType.REFERENCE_POINT_IN_TIME);
94 referenceNodeListTableModel = new DiffTableModel();
95 currentNodeListTableModel = new DiffTableModel();
96 currentRelationMemberTableModel = new RelationMemberTableModel(PointInTimeType.CURRENT_POINT_IN_TIME);
97 referenceRelationMemberTableModel = new RelationMemberTableModel(PointInTimeType.REFERENCE_POINT_IN_TIME);
98
99 if (getEditLayer() != null) {
100 getEditLayer().data.addDataSetListener(this);
101 }
102 MapView.addLayerChangeListener(this);
103 }
104
105 /**
106 * Creates a new history browser model for a given history.
107 *
108 * @param history the history. Must not be null.
109 * @throws IllegalArgumentException thrown if history is null
110 */
111 public HistoryBrowserModel(History history) {
112 this();
113 CheckParameterUtil.ensureParameterNotNull(history, "history");
114 setHistory(history);
115 }
116
117 /**
118 * Replies the current edit layer; null, if there isn't a current edit layer
119 * of type {@see OsmDataLayer}.
120 *
121 * @return the current edit layer
122 */
123 protected OsmDataLayer getEditLayer() {
124 try {
125 return Main.map.mapView.getEditLayer();
126 } catch(NullPointerException e) {
127 return null;
128 }
129 }
130
131 /**
132 * replies the history managed by this model
133 * @return the history
134 */
135 public History getHistory() {
136 return history;
137 }
138
139 protected boolean hasNewNodes(Way way) {
140 for (Node n: way.getNodes()) {
141 if (n.isNew()) return true;
142 }
143 return false;
144 }
145 protected boolean canShowAsLatest(OsmPrimitive primitive) {
146 if (primitive == null) return false;
147 if (primitive.isNew() || !primitive.isUsable()) return false;
148
149 //try creating a history primitive. if that fails, the primitive cannot be used.
150 try {
151 HistoryOsmPrimitive.forOsmPrimitive(primitive);
152 } catch (Exception ign) {
153 return false;
154 }
155
156 if (history == null) return false;
157 // only show latest of the same version if it is modified
158 if (history.getByVersion(primitive.getVersion()) != null)
159 return primitive.isModified();
160
161 // latest has a higher version than one of the primitives
162 // in the history (probably because the history got out of sync
163 // with uploaded data) -> show the primitive as latest
164 return true;
165 }
166
167 /**
168 * sets the history to be managed by this model
169 *
170 * @param history the history
171 *
172 */
173 public void setHistory(History history) {
174 this.history = history;
175 if (history.getNumVersions() > 0) {
176 HistoryOsmPrimitive newLatest = null;
177 if (getEditLayer() != null) {
178 OsmPrimitive p = getEditLayer().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 setChanged();
200 notifyObservers();
201 versionTableModel.fireTableDataChanged();
202 }
203
204 /**
205 * Replies the table model to be used in a {@see JTable} which
206 * shows the list of versions in this history.
207 *
208 * @return the table model
209 */
210 public VersionTableModel getVersionTableModel() {
211 return versionTableModel;
212 }
213
214 protected void initTagTableModels() {
215 currentTagTableModel.initKeyList();
216 referenceTagTableModel.initKeyList();
217 }
218
219 /**
220 * Should be called everytime either reference of current changes to update the diff.
221 * TODO: Maybe rename to reflect this? eg. updateNodeListTableModels
222 */
223 protected void initNodeListTableModels() {
224
225 if(current.getType() != OsmPrimitiveType.WAY || reference.getType() != OsmPrimitiveType.WAY)
226 return;
227 TwoColumnDiff diff = new TwoColumnDiff(
228 ((HistoryWay)reference).getNodes().toArray(),
229 ((HistoryWay)current).getNodes().toArray());
230 referenceNodeListTableModel.setRows(diff.referenceDiff);
231 currentNodeListTableModel.setRows(diff.currentDiff);
232
233 referenceNodeListTableModel.fireTableDataChanged();
234 currentNodeListTableModel.fireTableDataChanged();
235 }
236
237 protected void initMemberListTableModels() {
238 currentRelationMemberTableModel.fireTableDataChanged();
239 referenceRelationMemberTableModel.fireTableDataChanged();
240 }
241
242 /**
243 * replies the tag table model for the respective point in time
244 *
245 * @param pointInTimeType the type of the point in time (must not be null)
246 * @return the tag table model
247 * @exception IllegalArgumentException thrown, if pointInTimeType is null
248 */
249 public TagTableModel getTagTableModel(PointInTimeType pointInTimeType) throws IllegalArgumentException {
250 CheckParameterUtil.ensureParameterNotNull(pointInTimeType, "pointInTimeType");
251 if (pointInTimeType.equals(PointInTimeType.CURRENT_POINT_IN_TIME))
252 return currentTagTableModel;
253 else if (pointInTimeType.equals(PointInTimeType.REFERENCE_POINT_IN_TIME))
254 return referenceTagTableModel;
255
256 // should not happen
257 return null;
258 }
259
260 public DiffTableModel getNodeListTableModel(PointInTimeType pointInTimeType) throws IllegalArgumentException {
261 CheckParameterUtil.ensureParameterNotNull(pointInTimeType, "pointInTimeType");
262 if (pointInTimeType.equals(PointInTimeType.CURRENT_POINT_IN_TIME))
263 return currentNodeListTableModel;
264 else if (pointInTimeType.equals(PointInTimeType.REFERENCE_POINT_IN_TIME))
265 return referenceNodeListTableModel;
266
267 // should not happen
268 return null;
269 }
270
271 public RelationMemberTableModel getRelationMemberTableModel(PointInTimeType pointInTimeType) throws IllegalArgumentException {
272 CheckParameterUtil.ensureParameterNotNull(pointInTimeType, "pointInTimeType");
273 if (pointInTimeType.equals(PointInTimeType.CURRENT_POINT_IN_TIME))
274 return currentRelationMemberTableModel;
275 else if (pointInTimeType.equals(PointInTimeType.REFERENCE_POINT_IN_TIME))
276 return referenceRelationMemberTableModel;
277
278 // should not happen
279 return null;
280 }
281
282 /**
283 * Sets the {@see HistoryOsmPrimitive} which plays the role of a reference point
284 * in time (see {@see PointInTimeType}).
285 *
286 * @param reference the reference history primitive. Must not be null.
287 * @throws IllegalArgumentException thrown if reference is null
288 * @throws IllegalStateException thrown if this model isn't a assigned a history yet
289 * @throws IllegalArgumentException if reference isn't an history primitive for the history managed by this mode
290 *
291 * @see #setHistory(History)
292 * @see PointInTimeType
293 */
294 public void setReferencePointInTime(HistoryOsmPrimitive reference) throws IllegalArgumentException, IllegalStateException{
295 CheckParameterUtil.ensureParameterNotNull(reference, "reference");
296 if (history == null)
297 throw new IllegalStateException(tr("History not initialized yet. Failed to set reference primitive."));
298 if (reference.getId() != history.getId())
299 throw new IllegalArgumentException(tr("Failed to set reference. Reference ID {0} does not match history ID {1}.", reference.getId(), history.getId()));
300 HistoryOsmPrimitive primitive = history.getByVersion(reference.getVersion());
301 if (primitive == null)
302 throw new IllegalArgumentException(tr("Failed to set reference. Reference version {0} not available in history.", reference.getVersion()));
303
304 this.reference = reference;
305 initTagTableModels();
306 initNodeListTableModels();
307 initMemberListTableModels();
308 setChanged();
309 notifyObservers();
310 }
311
312 /**
313 * Sets the {@see HistoryOsmPrimitive} which plays the role of the current point
314 * in time (see {@see PointInTimeType}).
315 *
316 * @param reference the reference history primitive. Must not be null.
317 * @throws IllegalArgumentException thrown if reference is null
318 * @throws IllegalStateException thrown if this model isn't a assigned a history yet
319 * @throws IllegalArgumentException if reference isn't an history primitive for the history managed by this mode
320 *
321 * @see #setHistory(History)
322 * @see PointInTimeType
323 */
324 public void setCurrentPointInTime(HistoryOsmPrimitive current) throws IllegalArgumentException, IllegalStateException{
325 CheckParameterUtil.ensureParameterNotNull(current, "current");
326 if (history == null)
327 throw new IllegalStateException(tr("History not initialized yet. Failed to set current primitive."));
328 if (current.getId() != history.getId())
329 throw new IllegalArgumentException(tr("Failed to set reference. Reference ID {0} does not match history ID {1}.", current.getId(), history.getId()));
330 HistoryOsmPrimitive primitive = history.getByVersion(current.getVersion());
331 if (primitive == null)
332 throw new IllegalArgumentException(tr("Failed to set current primitive. Current version {0} not available in history.", current.getVersion()));
333 this.current = current;
334 initTagTableModels();
335 initNodeListTableModels();
336 initMemberListTableModels();
337 setChanged();
338 notifyObservers();
339 }
340
341 /**
342 * Replies the history OSM primitive for the {@see PointInTimeType#CURRENT_POINT_IN_TIME}
343 *
344 * @return the history OSM primitive for the {@see PointInTimeType#CURRENT_POINT_IN_TIME} (may be null)
345 */
346 public HistoryOsmPrimitive getCurrentPointInTime() {
347 return getPointInTime(PointInTimeType.CURRENT_POINT_IN_TIME);
348 }
349
350 /**
351 * Replies the history OSM primitive for the {@see PointInTimeType#REFERENCE_POINT_IN_TIME}
352 *
353 * @return the history OSM primitive for the {@see PointInTimeType#REFERENCE_POINT_IN_TIME} (may be null)
354 */
355 public HistoryOsmPrimitive getReferencePointInTime() {
356 return getPointInTime(PointInTimeType.REFERENCE_POINT_IN_TIME);
357 }
358
359 /**
360 * replies the history OSM primitive for a given point in time
361 *
362 * @param type the type of the point in time (must not be null)
363 * @return the respective primitive. Can be null.
364 * @exception IllegalArgumentException thrown, if type is null
365 */
366 public HistoryOsmPrimitive getPointInTime(PointInTimeType type) throws IllegalArgumentException {
367 CheckParameterUtil.ensureParameterNotNull(type, "type");
368 if (type.equals(PointInTimeType.CURRENT_POINT_IN_TIME))
369 return current;
370 else if (type.equals(PointInTimeType.REFERENCE_POINT_IN_TIME))
371 return reference;
372
373 // should not happen
374 return null;
375 }
376
377 /**
378 * Returns true if <code>primitive</code> is the latest primitive
379 * representing the version currently edited in the current data
380 * layer.
381 *
382 * @param primitive the primitive to check
383 * @return true if <code>primitive</code> is the latest primitive
384 */
385 public boolean isLatest(HistoryOsmPrimitive primitive) {
386 if (primitive == null) return false;
387 return primitive == latest;
388 }
389
390 /**
391 * The table model for the list of versions in the current history
392 *
393 */
394 public class VersionTableModel extends AbstractTableModel {
395
396 private VersionTableModel() {
397 }
398
399 @Override
400 public int getRowCount() {
401 if (history == null)
402 return 0;
403 int ret = history.getNumVersions();
404 if (latest != null) {
405 ret++;
406 }
407 return ret;
408 }
409
410 @Override
411 public Object getValueAt(int row, int column) {
412 if(history == null)
413 return null;
414 if (row < history.getNumVersions())
415 return history.get(row);
416 if (row == history.getNumVersions())
417 return latest;
418 return null;
419 }
420
421 @Override
422 public boolean isCellEditable(int row, int column) {
423 return false;
424 }
425
426 public void setReferencePointInTime(int row) {
427 if (history == null) return;
428 if (row == history.getNumVersions()) {
429 if (latest != null) {
430 HistoryBrowserModel.this.setReferencePointInTime(latest);
431 }
432 return;
433 }
434 if (row < 0 || row > history.getNumVersions()) return;
435 HistoryOsmPrimitive reference = history.get(row);
436 HistoryBrowserModel.this.setReferencePointInTime(reference);
437 }
438
439 public void setCurrentPointInTime(int row) {
440 if (history == null) return;
441 if (row == history.getNumVersions()) {
442 if (latest != null) {
443 HistoryBrowserModel.this.setCurrentPointInTime(latest);
444 }
445 return;
446 }
447 if (row < 0 || row > history.getNumVersions()) return;
448 HistoryOsmPrimitive current = history.get(row);
449 HistoryBrowserModel.this.setCurrentPointInTime(current);
450 }
451
452 public boolean isReferencePointInTime(int row) {
453 if (history == null) return false;
454 if (row == history.getNumVersions())
455 return latest == reference;
456 if (row < 0 || row > history.getNumVersions()) return false;
457 HistoryOsmPrimitive p = history.get(row);
458 return p == reference;
459 }
460
461 public HistoryOsmPrimitive getPrimitive(int row) {
462 return isLatest(row) ? latest : history.get(row);
463 }
464
465 public boolean isLatest(int row) {
466 return row >= history.getNumVersions();
467 }
468
469 public OsmPrimitive getLatest() {
470 if (latest == null) return null;
471 if (getEditLayer() == null) return null;
472 OsmPrimitive p = getEditLayer().data.getPrimitiveById(latest.getId(), latest.getType());
473 return p;
474 }
475
476 @Override
477 public int getColumnCount() {
478 return 1;
479 }
480 }
481
482 /**
483 * The table model for the tags of the version at {@see PointInTimeType#REFERENCE_POINT_IN_TIME}
484 * or {@see PointInTimeType#CURRENT_POINT_IN_TIME}
485 *
486 */
487 public class TagTableModel extends AbstractTableModel {
488
489 private ArrayList<String> keys;
490 private PointInTimeType pointInTimeType;
491
492 protected void initKeyList() {
493 HashSet<String> keySet = new HashSet<String>();
494 if (current != null) {
495 keySet.addAll(current.getTags().keySet());
496 }
497 if (reference != null) {
498 keySet.addAll(reference.getTags().keySet());
499 }
500 keys = new ArrayList<String>(keySet);
501 Collections.sort(keys);
502 fireTableDataChanged();
503 }
504
505 protected TagTableModel(PointInTimeType type) {
506 pointInTimeType = type;
507 initKeyList();
508 }
509
510 @Override
511 public int getRowCount() {
512 if (keys == null) return 0;
513 return keys.size();
514 }
515
516 @Override
517 public Object getValueAt(int row, int column) {
518 return keys.get(row);
519 }
520
521 @Override
522 public boolean isCellEditable(int row, int column) {
523 return false;
524 }
525
526 public boolean hasTag(String key) {
527 HistoryOsmPrimitive primitive = getPointInTime(pointInTimeType);
528 if (primitive == null)
529 return false;
530 return primitive.hasTag(key);
531 }
532
533 public String getValue(String key) {
534 HistoryOsmPrimitive primitive = getPointInTime(pointInTimeType);
535 if (primitive == null)
536 return null;
537 return primitive.get(key);
538 }
539
540 public boolean oppositeHasTag(String key) {
541 PointInTimeType opposite = pointInTimeType.opposite();
542 HistoryOsmPrimitive primitive = getPointInTime(opposite);
543 if (primitive == null)
544 return false;
545 return primitive.hasTag(key);
546 }
547
548 public String getOppositeValue(String key) {
549 PointInTimeType opposite = pointInTimeType.opposite();
550 HistoryOsmPrimitive primitive = getPointInTime(opposite);
551 if (primitive == null)
552 return null;
553 return primitive.get(key);
554 }
555
556 public boolean hasSameValueAsOpposite(String key) {
557 String value = getValue(key);
558 String oppositeValue = getOppositeValue(key);
559 if (value == null || oppositeValue == null)
560 return false;
561 return value.equals(oppositeValue);
562 }
563
564 public PointInTimeType getPointInTimeType() {
565 return pointInTimeType;
566 }
567
568 public boolean isCurrentPointInTime() {
569 return pointInTimeType.equals(PointInTimeType.CURRENT_POINT_IN_TIME);
570 }
571
572 public boolean isReferencePointInTime() {
573 return pointInTimeType.equals(PointInTimeType.REFERENCE_POINT_IN_TIME);
574 }
575
576 @Override
577 public int getColumnCount() {
578 return 1;
579 }
580 }
581
582 /**
583 * The table model for the relation members of the version at {@see PointInTimeType#REFERENCE_POINT_IN_TIME}
584 * or {@see PointInTimeType#CURRENT_POINT_IN_TIME}
585 *
586 */
587
588 public class RelationMemberTableModel extends AbstractTableModel {
589
590 private PointInTimeType pointInTimeType;
591
592 private RelationMemberTableModel(PointInTimeType pointInTimeType) {
593 this.pointInTimeType = pointInTimeType;
594 }
595
596 @Override
597 public int getRowCount() {
598 int n = 0;
599 if (current != null && current.getType().equals(OsmPrimitiveType.RELATION)) {
600 n = ((HistoryRelation)current).getNumMembers();
601 }
602 if (reference != null && reference.getType().equals(OsmPrimitiveType.RELATION)) {
603 n = Math.max(n,((HistoryRelation)reference).getNumMembers());
604 }
605 return n;
606 }
607
608 protected HistoryRelation getRelation() {
609 if (pointInTimeType.equals(PointInTimeType.CURRENT_POINT_IN_TIME)) {
610 if (! current.getType().equals(OsmPrimitiveType.RELATION))
611 return null;
612 return (HistoryRelation)current;
613 }
614 if (pointInTimeType.equals(PointInTimeType.REFERENCE_POINT_IN_TIME)) {
615 if (! reference.getType().equals(OsmPrimitiveType.RELATION))
616 return null;
617 return (HistoryRelation)reference;
618 }
619
620 // should not happen
621 return null;
622 }
623
624 protected HistoryRelation getOppositeRelation() {
625 PointInTimeType opposite = pointInTimeType.opposite();
626 if (opposite.equals(PointInTimeType.CURRENT_POINT_IN_TIME)) {
627 if (! current.getType().equals(OsmPrimitiveType.RELATION))
628 return null;
629 return (HistoryRelation)current;
630 }
631 if (opposite.equals(PointInTimeType.REFERENCE_POINT_IN_TIME)) {
632 if (! reference.getType().equals(OsmPrimitiveType.RELATION))
633 return null;
634 return (HistoryRelation)reference;
635 }
636
637 // should not happen
638 return null;
639 }
640
641 @Override
642 public Object getValueAt(int row, int column) {
643 HistoryRelation relation = getRelation();
644 if (relation == null)
645 return null;
646 if (row >= relation.getNumMembers())
647 return null;
648 return relation.getMembers().get(row);
649 }
650
651 @Override
652 public boolean isCellEditable(int row, int column) {
653 return false;
654 }
655
656 public boolean isSameInOppositeWay(int row) {
657 HistoryRelation thisRelation = getRelation();
658 HistoryRelation oppositeRelation = getOppositeRelation();
659 if (thisRelation == null || oppositeRelation == null)
660 return false;
661 if (row >= oppositeRelation.getNumMembers())
662 return false;
663 return
664 thisRelation.getMembers().get(row).getPrimitiveId() == oppositeRelation.getMembers().get(row).getPrimitiveId()
665 && thisRelation.getMembers().get(row).getRole().equals(oppositeRelation.getMembers().get(row).getRole());
666 }
667
668 public boolean isInOppositeWay(int row) {
669 HistoryRelation thisRelation = getRelation();
670 HistoryRelation oppositeRelation = getOppositeRelation();
671 if (thisRelation == null || oppositeRelation == null)
672 return false;
673 return oppositeRelation.getMembers().contains(thisRelation.getMembers().get(row));
674 }
675
676 @Override
677 public int getColumnCount() {
678 return 1;
679 }
680 }
681
682 protected void setLatest(HistoryOsmPrimitive latest) {
683 if (latest == null) {
684 if (this.current == this.latest) {
685 this.current = history.getLatest();
686 }
687 if (this.reference == this.latest) {
688 this.current = history.getLatest();
689 }
690 this.latest = null;
691 } else {
692 if (this.current == this.latest) {
693 this.current = latest;
694 }
695 if (this.reference == this.latest) {
696 this.reference = latest;
697 }
698 this.latest = latest;
699 }
700 fireModelChange();
701 }
702
703 /**
704 * Removes this model as listener for data change and layer change
705 * events.
706 *
707 */
708 public void unlinkAsListener() {
709 if (getEditLayer() != null) {
710 getEditLayer().data.removeDataSetListener(this);
711 }
712 MapView.removeLayerChangeListener(this);
713 }
714
715 /* ---------------------------------------------------------------------- */
716 /* DataSetListener */
717 /* ---------------------------------------------------------------------- */
718 public void nodeMoved(NodeMovedEvent event) {
719 Node node = event.getNode();
720 if (!node.isNew() && node.getId() == history.getId()) {
721 setLatest(new HistoryPrimitiveBuilder().build(node));
722 }
723 }
724
725 public void primitivesAdded(PrimitivesAddedEvent event) {
726 for (OsmPrimitive p: event.getPrimitives()) {
727 if (canShowAsLatest(p)) {
728 setLatest(new HistoryPrimitiveBuilder().build(p));
729 }
730 }
731 }
732
733 public void primitivesRemoved(PrimitivesRemovedEvent event) {
734 for (OsmPrimitive p: event.getPrimitives()) {
735 if (!p.isNew() && p.getId() == history.getId()) {
736 setLatest(null);
737 }
738 }
739 }
740
741 public void relationMembersChanged(RelationMembersChangedEvent event) {
742 Relation r = event.getRelation();
743 if (!r.isNew() && r.getId() == history.getId()) {
744 setLatest(new HistoryPrimitiveBuilder().build(r));
745 }
746 }
747
748 public void tagsChanged(TagsChangedEvent event) {
749 OsmPrimitive prim = event.getPrimitive();
750 if (!prim.isNew() && prim.getId() == history.getId()) {
751 setLatest(new HistoryPrimitiveBuilder().build(prim));
752 }
753 }
754
755 public void wayNodesChanged(WayNodesChangedEvent event) {
756 Way way = event.getChangedWay();
757 if (!way.isNew() && way.getId() == history.getId()) {
758 setLatest(new HistoryPrimitiveBuilder().build(way));
759 }
760 }
761
762 public void dataChanged(DataChangedEvent event) {
763 OsmPrimitive primitive = event.getDataset().getPrimitiveById(history.getId(), history.getType());
764 HistoryOsmPrimitive latest;
765 if (canShowAsLatest(primitive)) {
766 latest = new HistoryPrimitiveBuilder().build(primitive);
767 } else {
768 latest = null;
769 }
770 setLatest(latest);
771 fireModelChange();
772 }
773
774 public void otherDatasetChange(AbstractDatasetChangedEvent event) {
775 // Irrelevant
776 }
777
778 /* ---------------------------------------------------------------------- */
779 /* LayerChangeListener */
780 /* ---------------------------------------------------------------------- */
781 public void activeLayerChange(Layer oldLayer, Layer newLayer) {
782 if (oldLayer != null && oldLayer instanceof OsmDataLayer) {
783 OsmDataLayer l = (OsmDataLayer)oldLayer;
784 l.data.removeDataSetListener(this);
785 }
786 if (newLayer == null || ! (newLayer instanceof OsmDataLayer)) {
787 latest = null;
788 fireModelChange();
789 return;
790 }
791 OsmDataLayer l = (OsmDataLayer)newLayer;
792 l.data.addDataSetListener(this);
793 OsmPrimitive primitive = l.data.getPrimitiveById(history.getId(), history.getType());
794 HistoryOsmPrimitive latest;
795 if (canShowAsLatest(primitive)) {
796 latest = new HistoryPrimitiveBuilder().build(primitive);
797 } else {
798 latest = null;
799 }
800 setLatest(latest);
801 fireModelChange();
802 }
803
804 public void layerAdded(Layer newLayer) {}
805 public void layerRemoved(Layer oldLayer) {}
806
807 /**
808 * Creates a {@see HistoryOsmPrimitive} from a {@see OsmPrimitive}
809 *
810 */
811 static class HistoryPrimitiveBuilder extends AbstractVisitor {
812 private HistoryOsmPrimitive clone;
813
814 private String getUserName(OsmPrimitive primitive) {
815 return primitive.getUser() == null?null:primitive.getUser().getName();
816 }
817
818 private long getUserId(OsmPrimitive primitive) {
819 return primitive.getUser() == null?0:primitive.getUser().getId();
820 }
821
822 public void visit(Node n) {
823 clone = new HistoryNode(n.getId(), n.getVersion(), n.isVisible(), getUserName(n), getUserId(n), 0, n.getTimestamp(), n.getCoor());
824 clone.setTags(n.getKeys());
825 }
826
827 public void visit(Relation r) {
828 clone = new HistoryRelation(r.getId(), r.getVersion(), r.isVisible(), getUserName(r), getUserId(r), 0, r.getTimestamp());
829 clone.setTags(r.getKeys());
830 HistoryRelation hr = (HistoryRelation)clone;
831 for (RelationMember rm : r.getMembers()) {
832 hr.addMember(new org.openstreetmap.josm.data.osm.history.RelationMember(rm.getRole(), rm.getType(), rm.getUniqueId()));
833 }
834 }
835
836 public void visit(Way w) {
837 clone = new HistoryWay(w.getId(), w.getVersion(), w.isVisible(), getUserName(w), getUserId(w), 0, w.getTimestamp());
838 clone.setTags(w.getKeys());
839 for (Node n: w.getNodes()) {
840 ((HistoryWay)clone).addNode(n.getUniqueId());
841 }
842 }
843
844 public HistoryOsmPrimitive build(OsmPrimitive primitive) {
845 primitive.visit(this);
846 return clone;
847 }
848 }
849}
850
851/**
852 * Simple model storing "diff cells" in a list. Could probably have used a DefaultTableModel instead..
853 *
854 * {@see NodeListDiffTableCellRenderer}
855 */
856class DiffTableModel extends AbstractTableModel {
857 private List<TwoColumnDiff.Item> rows;
858
859 public void setRows(List<TwoColumnDiff.Item> rows) {
860 this.rows = rows;
861 }
862
863 public DiffTableModel(List<TwoColumnDiff.Item> rows) {
864 this.rows = rows;
865 }
866 public DiffTableModel() {
867 this.rows = new ArrayList<TwoColumnDiff.Item>();
868 }
869 @Override
870 public int getRowCount() {
871 return rows.size();
872 }
873
874 @Override
875 public int getColumnCount() {
876 return 1;
877 }
878
879 @Override
880 public TwoColumnDiff.Item getValueAt(int rowIndex, int columnIndex) {
881 return rows.get(rowIndex);
882 }
883}
884
885
886/// Feel free to move me somewhere else. Maybe a bit specific for josm.tools?
887/**
888 * Produces a "two column diff" of two lists. (same as diff -y)
889 *
890 * Each list is annotated with the changes relative to the other, and "empty" cells are inserted so the lists are comparable item by item.
891 *
892 * diff on [1 2 3 4] [1 a 4 5] yields:
893 *
894 * item(SAME, 1) item(SAME, 1)
895 * item(CHANGED, 2) item(CHANGED, 2)
896 * item(DELETED, 3) item(EMPTY)
897 * item(SAME, 4) item(SAME, 4)
898 * item(EMPTY) item(INSERTED, 5)
899 *
900 * @author olejorgenb
901 */
902class TwoColumnDiff {
903 public static class Item {
904 public static final int INSERTED = 1;
905 public static final int DELETED = 2;
906 public static final int CHANGED = 3;
907 public static final int SAME = 4;
908 public static final int EMPTY = 5; // value should be null
909 public Item(int state, Object value) {
910 this.state = state;
911 this.value = state == EMPTY ? null : value;
912 }
913
914 public final Object value;
915 public final int state;
916 }
917
918 public ArrayList<Item> referenceDiff;
919 public ArrayList<Item> currentDiff;
920 Object[] reference;
921 Object[] current;
922
923 /**
924 * The arguments will _not_ be modified
925 */
926 public TwoColumnDiff(Object[] reference, Object[] current) {
927 this.reference = reference;
928 this.current = current;
929 referenceDiff = new ArrayList<Item>();
930 currentDiff = new ArrayList<Item>();
931 diff();
932 }
933 private void diff() {
934 Diff diff = new Diff(reference, current);
935 Diff.change script = diff.diff_2(false);
936 twoColumnDiffFromScript(script, reference, current);
937 }
938
939 /**
940 * The result from the diff algorithm is a "script" (a compressed description of the changes)
941 * This method expands this script into a full two column description.
942 */
943 private void twoColumnDiffFromScript(Diff.change script, Object[] a, Object[] b) {
944 int ia = 0;
945 int ib = 0;
946
947 while(script != null) {
948 int deleted = script.deleted;
949 int inserted = script.inserted;
950 while(ia < script.line0 && ib < script.line1){
951 // System.out.println(" "+a[ia] + "\t "+b[ib]);
952 Item cell = new Item(Item.SAME, a[ia]);
953 referenceDiff.add(cell);
954 currentDiff.add(cell);
955 ia++;
956 ib++;
957 }
958
959 while(inserted > 0 || deleted > 0) {
960 if(inserted > 0 && deleted > 0) {
961 // System.out.println("="+a[ia] + "\t="+b[ib]);
962 referenceDiff.add(new Item(Item.CHANGED, a[ia++]));
963 currentDiff.add(new Item(Item.CHANGED, b[ib++]));
964 } else if(inserted > 0) {
965 // System.out.println("\t+" + b[ib]);
966 referenceDiff.add(new Item(Item.EMPTY, null));
967 currentDiff.add(new Item(Item.INSERTED, b[ib++]));
968 } else if(deleted > 0) {
969 // System.out.println("-"+a[ia]);
970 referenceDiff.add(new Item(Item.DELETED, a[ia++]));
971 currentDiff.add(new Item(Item.EMPTY, null));
972 }
973 inserted--;
974 deleted--;
975 }
976 script = script.link;
977 }
978 while(ia < a.length && ib < b.length) {
979 // System.out.println((ia < a.length ? " "+a[ia]+"\t" : "\t") + (ib < b.length ? " "+b[ib] : ""));
980 referenceDiff.add(new Item(Item.SAME, a[ia++]));
981 currentDiff.add(new Item(Item.SAME, b[ib++]));
982 }
983 }
984}
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