source: josm/trunk/src/org/openstreetmap/josm/actions/mapmode/ImproveWayAccuracyAction.java@ 15063

Last change on this file since 15063 was 15063, checked in by GerdP, 5 years ago

fix java warning
  • Property svn:eol-style set to native
File size: 26.4 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.actions.mapmode;
3
4import static org.openstreetmap.josm.tools.I18n.marktr;
5import static org.openstreetmap.josm.tools.I18n.tr;
6import static org.openstreetmap.josm.tools.I18n.trn;
7
8import java.awt.BasicStroke;
9import java.awt.Color;
10import java.awt.Cursor;
11import java.awt.Graphics2D;
12import java.awt.Point;
13import java.awt.event.KeyEvent;
14import java.awt.event.MouseEvent;
15import java.util.ArrayList;
16import java.util.Collection;
17import java.util.Collections;
18import java.util.HashSet;
19import java.util.LinkedList;
20import java.util.List;
21import java.util.Set;
22
23import javax.swing.JOptionPane;
24
25import org.openstreetmap.josm.command.AddCommand;
26import org.openstreetmap.josm.command.ChangeCommand;
27import org.openstreetmap.josm.command.Command;
28import org.openstreetmap.josm.command.DeleteCommand;
29import org.openstreetmap.josm.command.MoveCommand;
30import org.openstreetmap.josm.command.SequenceCommand;
31import org.openstreetmap.josm.data.Bounds;
32import org.openstreetmap.josm.data.UndoRedoHandler;
33import org.openstreetmap.josm.data.coor.EastNorth;
34import org.openstreetmap.josm.data.osm.DataSelectionListener;
35import org.openstreetmap.josm.data.osm.DataSet;
36import org.openstreetmap.josm.data.osm.Node;
37import org.openstreetmap.josm.data.osm.OsmPrimitive;
38import org.openstreetmap.josm.data.osm.Way;
39import org.openstreetmap.josm.data.osm.WaySegment;
40import org.openstreetmap.josm.data.osm.event.AbstractDatasetChangedEvent;
41import org.openstreetmap.josm.data.osm.event.DataChangedEvent;
42import org.openstreetmap.josm.data.osm.event.DataSetListener;
43import org.openstreetmap.josm.data.osm.event.DatasetEventManager;
44import org.openstreetmap.josm.data.osm.event.DatasetEventManager.FireMode;
45import org.openstreetmap.josm.data.osm.event.NodeMovedEvent;
46import org.openstreetmap.josm.data.osm.event.PrimitivesAddedEvent;
47import org.openstreetmap.josm.data.osm.event.PrimitivesRemovedEvent;
48import org.openstreetmap.josm.data.osm.event.RelationMembersChangedEvent;
49import org.openstreetmap.josm.data.osm.event.SelectionEventManager;
50import org.openstreetmap.josm.data.osm.event.TagsChangedEvent;
51import org.openstreetmap.josm.data.osm.event.WayNodesChangedEvent;
52import org.openstreetmap.josm.data.preferences.CachingProperty;
53import org.openstreetmap.josm.data.preferences.IntegerProperty;
54import org.openstreetmap.josm.data.preferences.NamedColorProperty;
55import org.openstreetmap.josm.data.preferences.StrokeProperty;
56import org.openstreetmap.josm.gui.MainApplication;
57import org.openstreetmap.josm.gui.MapFrame;
58import org.openstreetmap.josm.gui.MapView;
59import org.openstreetmap.josm.gui.draw.MapViewPath;
60import org.openstreetmap.josm.gui.draw.SymbolShape;
61import org.openstreetmap.josm.gui.layer.AbstractMapViewPaintable;
62import org.openstreetmap.josm.gui.layer.Layer;
63import org.openstreetmap.josm.gui.util.ModifierExListener;
64import org.openstreetmap.josm.tools.ImageProvider;
65import org.openstreetmap.josm.tools.Logging;
66import org.openstreetmap.josm.tools.Pair;
67import org.openstreetmap.josm.tools.Shortcut;
68
69/**
70 * A special map mode that is optimized for improving way geometry.
71 * (by efficiently moving, adding and deleting way-nodes)
72 *
73 * @author Alexander Kachkaev <alexander@kachkaev.ru>, 2011
74 */
75public class ImproveWayAccuracyAction extends MapMode implements DataSelectionListener, DataSetListener, ModifierExListener {
76
77 private static final String CROSSHAIR = /* ICON(cursor/)*/ "crosshair";
78
79 enum State {
80 SELECTING, IMPROVING
81 }
82
83 private State state;
84
85 private MapView mv;
86
87 private static final long serialVersionUID = 42L;
88
89 private transient Way targetWay;
90 private transient Node candidateNode;
91 private transient WaySegment candidateSegment;
92
93 private Point mousePos;
94 private boolean dragging;
95
96 private final Cursor cursorSelect = ImageProvider.getCursor(/* ICON(cursor/)*/ "normal", /* ICON(cursor/modifier/)*/ "mode");
97 private final Cursor cursorSelectHover = ImageProvider.getCursor(/* ICON(cursor/)*/ "hand", /* ICON(cursor/modifier/)*/ "mode");
98 private final Cursor cursorImprove = ImageProvider.getCursor(CROSSHAIR, null);
99 private final Cursor cursorImproveAdd = ImageProvider.getCursor(CROSSHAIR, /* ICON(cursor/modifier/)*/ "addnode");
100 private final Cursor cursorImproveDelete = ImageProvider.getCursor(CROSSHAIR, /* ICON(cursor/modifier/)*/ "delete_node");
101 private final Cursor cursorImproveAddLock = ImageProvider.getCursor(CROSSHAIR, /* ICON(cursor/modifier/)*/ "add_node_lock");
102 private final Cursor cursorImproveLock = ImageProvider.getCursor(CROSSHAIR, /* ICON(cursor/modifier/)*/ "lock");
103
104 private Color guideColor;
105
106 private static final CachingProperty<BasicStroke> SELECT_TARGET_WAY_STROKE
107 = new StrokeProperty("improvewayaccuracy.stroke.select-target", "2").cached();
108 private static final CachingProperty<BasicStroke> MOVE_NODE_STROKE
109 = new StrokeProperty("improvewayaccuracy.stroke.move-node", "1 6").cached();
110 private static final CachingProperty<BasicStroke> MOVE_NODE_INTERSECTING_STROKE
111 = new StrokeProperty("improvewayaccuracy.stroke.move-node-intersecting", "1 2 6").cached();
112 private static final CachingProperty<BasicStroke> ADD_NODE_STROKE
113 = new StrokeProperty("improvewayaccuracy.stroke.add-node", "1").cached();
114 private static final CachingProperty<BasicStroke> DELETE_NODE_STROKE
115 = new StrokeProperty("improvewayaccuracy.stroke.delete-node", "1").cached();
116 private static final CachingProperty<Integer> DOT_SIZE
117 = new IntegerProperty("improvewayaccuracy.dot-size", 6).cached();
118
119 private boolean selectionChangedBlocked;
120
121 protected String oldModeHelpText;
122
123 private final transient AbstractMapViewPaintable temporaryLayer = new AbstractMapViewPaintable() {
124 @Override
125 public void paint(Graphics2D g, MapView mv, Bounds bbox) {
126 ImproveWayAccuracyAction.this.paint(g, mv, bbox);
127 }
128 };
129
130 /**
131 * Constructs a new {@code ImproveWayAccuracyAction}.
132 * @since 11713
133 */
134 public ImproveWayAccuracyAction() {
135 super(tr("Improve Way Accuracy"), "improvewayaccuracy",
136 tr("Improve Way Accuracy mode"),
137 Shortcut.registerShortcut("mapmode:ImproveWayAccuracy",
138 tr("Mode: {0}", tr("Improve Way Accuracy")),
139 KeyEvent.VK_W, Shortcut.DIRECT), Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
140
141 readPreferences();
142 }
143
144 // -------------------------------------------------------------------------
145 // Mode methods
146 // -------------------------------------------------------------------------
147 @Override
148 public void enterMode() {
149 if (!isEnabled()) {
150 return;
151 }
152 super.enterMode();
153 readPreferences();
154
155 MapFrame map = MainApplication.getMap();
156 mv = map.mapView;
157 mousePos = null;
158 oldModeHelpText = "";
159
160 if (getLayerManager().getEditDataSet() == null) {
161 return;
162 }
163
164 updateStateByCurrentSelection();
165
166 map.mapView.addMouseListener(this);
167 map.mapView.addMouseMotionListener(this);
168 map.mapView.addTemporaryLayer(temporaryLayer);
169 SelectionEventManager.getInstance().addSelectionListener(this);
170 DatasetEventManager.getInstance().addDatasetListener(this, FireMode.IMMEDIATELY);
171
172 map.keyDetector.addModifierExListener(this);
173 }
174
175 @Override
176 protected void readPreferences() {
177 guideColor = new NamedColorProperty(marktr("improve way accuracy helper line"), Color.RED).get();
178 }
179
180 @Override
181 public void exitMode() {
182 super.exitMode();
183
184 MapFrame map = MainApplication.getMap();
185 map.mapView.removeMouseListener(this);
186 map.mapView.removeMouseMotionListener(this);
187 map.mapView.removeTemporaryLayer(temporaryLayer);
188 SelectionEventManager.getInstance().removeSelectionListener(this);
189 DatasetEventManager.getInstance().removeDatasetListener(this);
190
191 map.keyDetector.removeModifierExListener(this);
192 temporaryLayer.invalidate();
193 }
194
195 @Override
196 protected void updateStatusLine() {
197 String newModeHelpText = getModeHelpText();
198 if (!newModeHelpText.equals(oldModeHelpText)) {
199 oldModeHelpText = newModeHelpText;
200 MapFrame map = MainApplication.getMap();
201 map.statusLine.setHelpText(newModeHelpText);
202 map.statusLine.repaint();
203 }
204 }
205
206 @Override
207 public String getModeHelpText() {
208 if (state == State.SELECTING) {
209 if (targetWay != null) {
210 return tr("Click on the way to start improving its shape.");
211 } else {
212 return tr("Select a way that you want to make more accurate.");
213 }
214 } else {
215 if (ctrl) {
216 return tr("Click to add a new node. Release Ctrl to move existing nodes or hold Alt to delete.");
217 } else if (alt) {
218 return tr("Click to delete the highlighted node. Release Alt to move existing nodes or hold Ctrl to add new nodes.");
219 } else {
220 return tr("Click to move the highlighted node. Hold Ctrl to add new nodes, or Alt to delete.");
221 }
222 }
223 }
224
225 @Override
226 public boolean layerIsSupported(Layer l) {
227 return isEditableDataLayer(l);
228 }
229
230 @Override
231 protected void updateEnabledState() {
232 setEnabled(getLayerManager().getEditLayer() != null);
233 }
234
235 // -------------------------------------------------------------------------
236 // MapViewPaintable methods
237 // -------------------------------------------------------------------------
238 /**
239 * Redraws temporary layer. Highlights targetWay in select mode. Draws
240 * preview lines in improve mode and highlights the candidateNode
241 * @param g The graphics
242 * @param mv The map view
243 * @param bbox The bounding box
244 */
245 public void paint(Graphics2D g, MapView mv, Bounds bbox) {
246 if (mousePos == null || (candidateNode != null && candidateNode.getDataSet() == null)) {
247 return;
248 }
249
250 g.setColor(guideColor);
251
252 if (state == State.SELECTING && targetWay != null) {
253 // Highlighting the targetWay in Selecting state
254 // Non-native highlighting is used, because sometimes highlighted
255 // segments are covered with others, which is bad.
256 BasicStroke stroke = SELECT_TARGET_WAY_STROKE.get();
257 g.setStroke(stroke);
258
259 List<Node> nodes = targetWay.getNodes();
260
261 g.draw(new MapViewPath(mv).append(nodes, false).computeClippedLine(stroke));
262
263 } else if (state == State.IMPROVING) {
264 // Drawing preview lines and highlighting the node
265 // that is going to be moved.
266 // Non-native highlighting is used here as well.
267
268 // Finding endpoints
269 Node p1 = null;
270 Node p2 = null;
271 if (ctrl && candidateSegment != null) {
272 g.setStroke(ADD_NODE_STROKE.get());
273 try {
274 p1 = candidateSegment.getFirstNode();
275 p2 = candidateSegment.getSecondNode();
276 } catch (ArrayIndexOutOfBoundsException e) {
277 Logging.error(e);
278 }
279 } else if (!alt && !ctrl && candidateNode != null) {
280 g.setStroke(MOVE_NODE_STROKE.get());
281 List<Pair<Node, Node>> wpps = targetWay.getNodePairs(false);
282 for (Pair<Node, Node> wpp : wpps) {
283 if (wpp.a == candidateNode) {
284 p1 = wpp.b;
285 }
286 if (wpp.b == candidateNode) {
287 p2 = wpp.a;
288 }
289 if (p1 != null && p2 != null) {
290 break;
291 }
292 }
293 } else if (alt && !ctrl && candidateNode != null) {
294 g.setStroke(DELETE_NODE_STROKE.get());
295 List<Node> nodes = targetWay.getNodes();
296 int index = nodes.indexOf(candidateNode);
297
298 // Only draw line if node is not first and/or last
299 if (index > 0 && index < (nodes.size() - 1)) {
300 p1 = nodes.get(index - 1);
301 p2 = nodes.get(index + 1);
302 } else if (targetWay.isClosed()) {
303 p1 = targetWay.getNode(1);
304 p2 = targetWay.getNode(nodes.size() - 2);
305 }
306 // TODO: indicate what part that will be deleted? (for end nodes)
307 }
308
309
310 // Drawing preview lines
311 MapViewPath b = new MapViewPath(mv);
312 if (alt && !ctrl) {
313 // In delete mode
314 if (p1 != null && p2 != null) {
315 b.moveTo(p1);
316 b.lineTo(p2);
317 }
318 } else {
319 // In add or move mode
320 if (p1 != null) {
321 b.moveTo(mousePos.x, mousePos.y);
322 b.lineTo(p1);
323 }
324 if (p2 != null) {
325 b.moveTo(mousePos.x, mousePos.y);
326 b.lineTo(p2);
327 }
328 }
329 g.draw(b.computeClippedLine(g.getStroke()));
330
331 // Highlighting candidateNode
332 if (candidateNode != null) {
333 p1 = candidateNode;
334 g.fill(new MapViewPath(mv).shapeAround(p1, SymbolShape.SQUARE, DOT_SIZE.get()));
335 }
336
337 if (!alt && !ctrl && candidateNode != null) {
338 b.reset();
339 drawIntersectingWayHelperLines(mv, b);
340 g.setStroke(MOVE_NODE_INTERSECTING_STROKE.get());
341 g.draw(b.computeClippedLine(g.getStroke()));
342 }
343
344 }
345 }
346
347 protected void drawIntersectingWayHelperLines(MapView mv, MapViewPath b) {
348 for (final OsmPrimitive referrer : candidateNode.getReferrers()) {
349 if (!(referrer instanceof Way) || targetWay.equals(referrer)) {
350 continue;
351 }
352 final List<Node> nodes = ((Way) referrer).getNodes();
353 for (int i = 0; i < nodes.size(); i++) {
354 if (!candidateNode.equals(nodes.get(i))) {
355 continue;
356 }
357 if (i > 0) {
358 b.moveTo(mousePos.x, mousePos.y);
359 b.lineTo(nodes.get(i - 1));
360 }
361 if (i < nodes.size() - 1) {
362 b.moveTo(mousePos.x, mousePos.y);
363 b.lineTo(nodes.get(i + 1));
364 }
365 }
366 }
367 }
368
369 // -------------------------------------------------------------------------
370 // Event handlers
371 // -------------------------------------------------------------------------
372 @Override
373 public void modifiersExChanged(int modifiers) {
374 if (!MainApplication.isDisplayingMapView() || !MainApplication.getMap().mapView.isActiveLayerDrawable()) {
375 return;
376 }
377 updateKeyModifiersEx(modifiers);
378 updateCursorDependentObjectsIfNeeded();
379 updateCursor();
380 updateStatusLine();
381 temporaryLayer.invalidate();
382 }
383
384 @Override
385 public void selectionChanged(SelectionChangeEvent event) {
386 if (selectionChangedBlocked) {
387 return;
388 }
389 updateStateByCurrentSelection();
390 }
391
392 @Override
393 public void mouseDragged(MouseEvent e) {
394 dragging = true;
395 mouseMoved(e);
396 }
397
398 @Override
399 public void mouseMoved(MouseEvent e) {
400 if (!isEnabled()) {
401 return;
402 }
403
404 mousePos = e.getPoint();
405
406 updateKeyModifiers(e);
407 updateCursorDependentObjectsIfNeeded();
408 updateCursor();
409 updateStatusLine();
410 temporaryLayer.invalidate();
411 }
412
413 @Override
414 public void mouseReleased(MouseEvent e) {
415 dragging = false;
416 if (!isEnabled() || e.getButton() != MouseEvent.BUTTON1) {
417 return;
418 }
419
420 DataSet ds = getLayerManager().getEditDataSet();
421 updateKeyModifiers(e);
422 mousePos = e.getPoint();
423
424 if (state == State.SELECTING) {
425 if (targetWay != null) {
426 ds.setSelected(targetWay.getPrimitiveId());
427 updateStateByCurrentSelection();
428 }
429 } else if (state == State.IMPROVING) {
430 // Checking if the new coordinate is outside of the world
431 if (new Node(mv.getEastNorth(mousePos.x, mousePos.y)).isOutSideWorld()) {
432 JOptionPane.showMessageDialog(MainApplication.getMainFrame(),
433 tr("Cannot add a node outside of the world."),
434 tr("Warning"), JOptionPane.WARNING_MESSAGE);
435 return;
436 }
437
438 if (ctrl && !alt && candidateSegment != null) {
439 // Add a new node to the highlighted segment.
440 Collection<WaySegment> virtualSegments = new LinkedList<>();
441
442 // Check if other ways have the same segment.
443 // We have to make sure that we add the new node to all of them.
444 Set<Way> commonParentWays = new HashSet<>(candidateSegment.getFirstNode().getParentWays());
445 commonParentWays.retainAll(candidateSegment.getSecondNode().getParentWays());
446 for (Way w : commonParentWays) {
447 for (int i = 0; i < w.getNodesCount() - 1; i++) {
448 WaySegment testWS = new WaySegment(w, i);
449 if (testWS.isSimilar(candidateSegment)) {
450 virtualSegments.add(testWS);
451 }
452 }
453 }
454
455 Collection<Command> virtualCmds = new LinkedList<>();
456 // Create the new node
457 Node virtualNode = new Node(mv.getEastNorth(mousePos.x, mousePos.y));
458 virtualCmds.add(new AddCommand(ds, virtualNode));
459
460 // Adding the node to all segments found
461 for (WaySegment virtualSegment : virtualSegments) {
462 Way w = virtualSegment.way;
463 Way wnew = new Way(w);
464 wnew.addNode(virtualSegment.lowerIndex + 1, virtualNode);
465 virtualCmds.add(new ChangeCommand(w, wnew));
466 }
467
468 // Finishing the sequence command
469 String text = trn("Add a new node to way",
470 "Add a new node to {0} ways",
471 virtualSegments.size(), virtualSegments.size());
472
473 UndoRedoHandler.getInstance().add(new SequenceCommand(text, virtualCmds));
474
475 } else if (alt && !ctrl && candidateNode != null) {
476 // Deleting the highlighted node
477
478 //check to see if node is in use by more than one object
479 long referrersCount = candidateNode.referrers(OsmPrimitive.class).count();
480 long referrerWayCount = candidateNode.referrers(Way.class).count();
481 if (referrersCount != 1 || referrerWayCount != 1) {
482 // detach node from way
483 final Way newWay = new Way(targetWay);
484 final List<Node> nodes = newWay.getNodes();
485 nodes.remove(candidateNode);
486 newWay.setNodes(nodes);
487 if (nodes.size() < 2) {
488 final Command deleteCmd = DeleteCommand.delete(Collections.singleton(targetWay), true);
489 if (deleteCmd != null) {
490 UndoRedoHandler.getInstance().add(deleteCmd);
491 }
492 } else {
493 UndoRedoHandler.getInstance().add(new ChangeCommand(targetWay, newWay));
494 }
495 } else if (candidateNode.isTagged()) {
496 JOptionPane.showMessageDialog(MainApplication.getMainFrame(),
497 tr("Cannot delete node that has tags"),
498 tr("Error"), JOptionPane.ERROR_MESSAGE);
499 } else {
500 final Command deleteCmd = DeleteCommand.delete(Collections.singleton(candidateNode), true);
501 if (deleteCmd != null) {
502 UndoRedoHandler.getInstance().add(deleteCmd);
503 }
504 }
505
506 } else if (candidateNode != null) {
507 // Moving the highlighted node
508 EastNorth nodeEN = candidateNode.getEastNorth();
509 EastNorth cursorEN = mv.getEastNorth(mousePos.x, mousePos.y);
510
511 UndoRedoHandler.getInstance().add(
512 new MoveCommand(candidateNode, cursorEN.east() - nodeEN.east(), cursorEN.north() - nodeEN.north()));
513 }
514 }
515
516 mousePos = null;
517 updateCursor();
518 updateStatusLine();
519 temporaryLayer.invalidate();
520 }
521
522 @Override
523 public void mouseExited(MouseEvent e) {
524 if (!isEnabled()) {
525 return;
526 }
527
528 if (!dragging) {
529 mousePos = null;
530 }
531 temporaryLayer.invalidate();
532 }
533
534 // -------------------------------------------------------------------------
535 // Custom methods
536 // -------------------------------------------------------------------------
537 /**
538 * Sets new cursor depending on state, mouse position
539 */
540 private void updateCursor() {
541 if (!isEnabled()) {
542 mv.setNewCursor(null, this);
543 return;
544 }
545
546 if (state == State.SELECTING) {
547 mv.setNewCursor(targetWay == null ? cursorSelect
548 : cursorSelectHover, this);
549 } else if (state == State.IMPROVING) {
550 if (alt && !ctrl) {
551 mv.setNewCursor(cursorImproveDelete, this);
552 } else if (shift || dragging) {
553 if (ctrl) {
554 mv.setNewCursor(cursorImproveAddLock, this);
555 } else {
556 mv.setNewCursor(cursorImproveLock, this);
557 }
558 } else if (ctrl && !alt) {
559 mv.setNewCursor(cursorImproveAdd, this);
560 } else {
561 mv.setNewCursor(cursorImprove, this);
562 }
563 }
564 }
565
566 /**
567 * Updates these objects under cursor: targetWay, candidateNode,
568 * candidateSegment
569 */
570 public void updateCursorDependentObjectsIfNeeded() {
571 if (state == State.IMPROVING && (shift || dragging)
572 && !(candidateNode == null && candidateSegment == null)) {
573 return;
574 }
575
576 if (mousePos == null) {
577 candidateNode = null;
578 candidateSegment = null;
579 return;
580 }
581
582 if (state == State.SELECTING) {
583 targetWay = ImproveWayAccuracyHelper.findWay(mv, mousePos);
584 } else if (state == State.IMPROVING) {
585 if (ctrl && !alt) {
586 candidateSegment = ImproveWayAccuracyHelper.findCandidateSegment(mv,
587 targetWay, mousePos);
588 candidateNode = null;
589 } else {
590 candidateNode = ImproveWayAccuracyHelper.findCandidateNode(mv,
591 targetWay, mousePos);
592 candidateSegment = null;
593 }
594 }
595 }
596
597 /**
598 * Switches to Selecting state
599 */
600 public void startSelecting() {
601 state = State.SELECTING;
602
603 targetWay = null;
604
605 temporaryLayer.invalidate();
606 updateStatusLine();
607 }
608
609 /**
610 * Switches to Improving state
611 *
612 * @param targetWay Way that is going to be improved
613 */
614 public void startImproving(Way targetWay) {
615 state = State.IMPROVING;
616
617 DataSet ds = getLayerManager().getEditDataSet();
618 Collection<OsmPrimitive> currentSelection = ds.getSelected();
619 if (currentSelection.size() != 1
620 || !currentSelection.iterator().next().equals(targetWay)) {
621 selectionChangedBlocked = true;
622 ds.clearSelection();
623 ds.setSelected(targetWay.getPrimitiveId());
624 selectionChangedBlocked = false;
625 }
626
627 this.targetWay = targetWay;
628 this.candidateNode = null;
629 this.candidateSegment = null;
630
631 temporaryLayer.invalidate();
632 updateStatusLine();
633 }
634
635 /**
636 * Updates the state according to the current selection. Goes to Improve
637 * state if a single way or node is selected. Extracts a way by a node in
638 * the second case.
639 */
640 private void updateStateByCurrentSelection() {
641 final List<Node> nodeList = new ArrayList<>();
642 final List<Way> wayList = new ArrayList<>();
643 final DataSet ds = getLayerManager().getEditDataSet();
644 if (ds != null) {
645 final Collection<OsmPrimitive> sel = ds.getSelected();
646
647 // Collecting nodes and ways from the selection
648 for (OsmPrimitive p : sel) {
649 if (p instanceof Way) {
650 wayList.add((Way) p);
651 }
652 if (p instanceof Node) {
653 nodeList.add((Node) p);
654 }
655 }
656
657 if (wayList.size() == 1) {
658 // Starting improving the single selected way
659 startImproving(wayList.get(0));
660 return;
661 } else if (nodeList.size() == 1) {
662 // Starting improving the only way of the single selected node
663 List<OsmPrimitive> r = nodeList.get(0).getReferrers();
664 if (r.size() == 1 && (r.get(0) instanceof Way)) {
665 startImproving((Way) r.get(0));
666 return;
667 }
668 }
669 }
670
671 // Starting selecting by default
672 startSelecting();
673 }
674
675 @Override
676 public void primitivesRemoved(PrimitivesRemovedEvent event) {
677 if (event.getPrimitives().contains(candidateNode) || event.getPrimitives().contains(targetWay)) {
678 updateCursorDependentObjectsIfNeeded();
679 }
680 }
681
682 @Override
683 public void primitivesAdded(PrimitivesAddedEvent event) {
684 // Do nothing
685 }
686
687 @Override
688 public void tagsChanged(TagsChangedEvent event) {
689 // Do nothing
690 }
691
692 @Override
693 public void nodeMoved(NodeMovedEvent event) {
694 // Do nothing
695 }
696
697 @Override
698 public void wayNodesChanged(WayNodesChangedEvent event) {
699 // Do nothing
700 }
701
702 @Override
703 public void relationMembersChanged(RelationMembersChangedEvent event) {
704 // Do nothing
705 }
706
707 @Override
708 public void otherDatasetChange(AbstractDatasetChangedEvent event) {
709 // Do nothing
710 }
711
712 @Override
713 public void dataChanged(DataChangedEvent event) {
714 // Do nothing
715 }
716}
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