source: josm/trunk/src/org/openstreetmap/josm/actions/mapmode/ImproveWayAccuracyAction.java@ 12718

Last change on this file since 12718 was 12718, checked in by Don-vip, 7 years ago

see #13036 - see #15229 - see #15182 - make Commands depends only on a DataSet, not a Layer. This removes a lot of GUI dependencies
  • Property svn:eol-style set to native
File size: 24.8 KB
RevLine 
[8378]1// License: GPL. For details, see LICENSE file.
[4846]2package org.openstreetmap.josm.actions.mapmode;
3
[6028]4import static org.openstreetmap.josm.tools.I18n.marktr;
[4846]5import static org.openstreetmap.josm.tools.I18n.tr;
6import static org.openstreetmap.josm.tools.I18n.trn;
7
[10875]8import java.awt.BasicStroke;
[4846]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;
[11082]17import java.util.Collections;
[4846]18import java.util.LinkedList;
19import java.util.List;
20
21import javax.swing.JOptionPane;
22
23import org.openstreetmap.josm.Main;
24import org.openstreetmap.josm.command.AddCommand;
25import org.openstreetmap.josm.command.ChangeCommand;
26import org.openstreetmap.josm.command.Command;
27import org.openstreetmap.josm.command.DeleteCommand;
28import org.openstreetmap.josm.command.MoveCommand;
29import org.openstreetmap.josm.command.SequenceCommand;
30import org.openstreetmap.josm.data.Bounds;
31import org.openstreetmap.josm.data.SelectionChangedListener;
32import org.openstreetmap.josm.data.coor.EastNorth;
33import org.openstreetmap.josm.data.osm.DataSet;
34import org.openstreetmap.josm.data.osm.Node;
35import org.openstreetmap.josm.data.osm.OsmPrimitive;
36import org.openstreetmap.josm.data.osm.Way;
37import org.openstreetmap.josm.data.osm.WaySegment;
[10875]38import org.openstreetmap.josm.data.preferences.CachingProperty;
[10853]39import org.openstreetmap.josm.data.preferences.ColorProperty;
[10875]40import org.openstreetmap.josm.data.preferences.IntegerProperty;
41import org.openstreetmap.josm.data.preferences.StrokeProperty;
[12630]42import org.openstreetmap.josm.gui.MainApplication;
43import org.openstreetmap.josm.gui.MapFrame;
[4846]44import org.openstreetmap.josm.gui.MapView;
[10875]45import org.openstreetmap.josm.gui.draw.MapViewPath;
46import org.openstreetmap.josm.gui.draw.SymbolShape;
[10031]47import org.openstreetmap.josm.gui.layer.AbstractMapViewPaintable;
[4846]48import org.openstreetmap.josm.gui.layer.Layer;
49import org.openstreetmap.josm.gui.layer.OsmDataLayer;
[12517]50import org.openstreetmap.josm.gui.util.ModifierExListener;
[4846]51import org.openstreetmap.josm.tools.ImageProvider;
52import org.openstreetmap.josm.tools.Pair;
53import org.openstreetmap.josm.tools.Shortcut;
54
55/**
[12581]56 * A special map mode that is optimized for improving way geometry.
57 * (by efficiently moving, adding and deleting way-nodes)
58 *
[6830]59 * @author Alexander Kachkaev <alexander@kachkaev.ru>, 2011
[4846]60 */
[10031]61public class ImproveWayAccuracyAction extends MapMode implements
[12517]62 SelectionChangedListener, ModifierExListener {
[4846]63
[11913]64 private static final String CROSSHAIR = "crosshair";
65
[11978]66 enum State {
[10875]67 SELECTING, IMPROVING
[4846]68 }
69
70 private State state;
71
72 private MapView mv;
73
74 private static final long serialVersionUID = 42L;
75
[8308]76 private transient Way targetWay;
[8840]77 private transient Node candidateNode;
78 private transient WaySegment candidateSegment;
[4846]79
[8840]80 private Point mousePos;
81 private boolean dragging;
[4846]82
[10875]83 private final Cursor cursorSelect = ImageProvider.getCursor("normal", "mode");
84 private final Cursor cursorSelectHover = ImageProvider.getCursor("hand", "mode");
[11913]85 private final Cursor cursorImprove = ImageProvider.getCursor(CROSSHAIR, null);
86 private final Cursor cursorImproveAdd = ImageProvider.getCursor(CROSSHAIR, "addnode");
87 private final Cursor cursorImproveDelete = ImageProvider.getCursor(CROSSHAIR, "delete_node");
88 private final Cursor cursorImproveAddLock = ImageProvider.getCursor(CROSSHAIR, "add_node_lock");
89 private final Cursor cursorImproveLock = ImageProvider.getCursor(CROSSHAIR, "lock");
[4846]90
[6028]91 private Color guideColor;
[6069]92
[10875]93 private static final CachingProperty<BasicStroke> SELECT_TARGET_WAY_STROKE
94 = new StrokeProperty("improvewayaccuracy.stroke.select-target", "2").cached();
95 private static final CachingProperty<BasicStroke> MOVE_NODE_STROKE
96 = new StrokeProperty("improvewayaccuracy.stroke.move-node", "1 6").cached();
97 private static final CachingProperty<BasicStroke> MOVE_NODE_INTERSECTING_STROKE
98 = new StrokeProperty("improvewayaccuracy.stroke.move-node-intersecting", "1 2 6").cached();
99 private static final CachingProperty<BasicStroke> ADD_NODE_STROKE
100 = new StrokeProperty("improvewayaccuracy.stroke.add-node", "1").cached();
101 private static final CachingProperty<BasicStroke> DELETE_NODE_STROKE
102 = new StrokeProperty("improvewayaccuracy.stroke.delete-node", "1").cached();
103 private static final CachingProperty<Integer> DOT_SIZE
104 = new IntegerProperty("improvewayaccuracy.dot-size", 6).cached();
105
[8840]106 private boolean selectionChangedBlocked;
[4846]107
108 protected String oldModeHelpText;
109
[10214]110 private final transient AbstractMapViewPaintable temporaryLayer = new AbstractMapViewPaintable() {
[10031]111 @Override
112 public void paint(Graphics2D g, MapView mv, Bounds bbox) {
[10047]113 ImproveWayAccuracyAction.this.paint(g, mv, bbox);
[10031]114 }
115 };
116
[7278]117 /**
118 * Constructs a new {@code ImproveWayAccuracyAction}.
[11713]119 * @since 11713
[7278]120 */
[11713]121 public ImproveWayAccuracyAction() {
[8061]122 super(tr("Improve Way Accuracy"), "improvewayaccuracy",
[4851]123 tr("Improve Way Accuracy mode"),
124 Shortcut.registerShortcut("mapmode:ImproveWayAccuracy",
[4846]125 tr("Mode: {0}", tr("Improve Way Accuracy")),
[11713]126 KeyEvent.VK_W, Shortcut.DIRECT), Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
[4846]127
[7227]128 readPreferences();
[4846]129 }
130
131 // -------------------------------------------------------------------------
132 // Mode methods
133 // -------------------------------------------------------------------------
134 @Override
135 public void enterMode() {
136 if (!isEnabled()) {
137 return;
138 }
139 super.enterMode();
[7227]140 readPreferences();
[4846]141
[12630]142 MapFrame map = MainApplication.getMap();
143 mv = map.mapView;
[4846]144 mousePos = null;
145 oldModeHelpText = "";
146
[10382]147 if (getLayerManager().getEditDataSet() == null) {
[4846]148 return;
149 }
150
151 updateStateByCurrentSelection();
152
[12630]153 map.mapView.addMouseListener(this);
154 map.mapView.addMouseMotionListener(this);
155 map.mapView.addTemporaryLayer(temporaryLayer);
[4846]156 DataSet.addSelectionListener(this);
157
[12630]158 map.keyDetector.addModifierExListener(this);
[4846]159 }
160
[9572]161 @Override
162 protected void readPreferences() {
[11542]163 guideColor = new ColorProperty(marktr("improve way accuracy helper line"), Color.RED).get();
[7227]164 }
165
[4846]166 @Override
167 public void exitMode() {
168 super.exitMode();
169
[12630]170 MapFrame map = MainApplication.getMap();
171 map.mapView.removeMouseListener(this);
172 map.mapView.removeMouseMotionListener(this);
173 map.mapView.removeTemporaryLayer(temporaryLayer);
[4846]174 DataSet.removeSelectionListener(this);
175
[12630]176 map.keyDetector.removeModifierExListener(this);
[10031]177 temporaryLayer.invalidate();
[4846]178 }
179
180 @Override
181 protected void updateStatusLine() {
182 String newModeHelpText = getModeHelpText();
183 if (!newModeHelpText.equals(oldModeHelpText)) {
184 oldModeHelpText = newModeHelpText;
[12630]185 MapFrame map = MainApplication.getMap();
186 map.statusLine.setHelpText(newModeHelpText);
187 map.statusLine.repaint();
[4846]188 }
189 }
190
191 @Override
192 public String getModeHelpText() {
[10875]193 if (state == State.SELECTING) {
[4846]194 if (targetWay != null) {
195 return tr("Click on the way to start improving its shape.");
196 } else {
197 return tr("Select a way that you want to make more accurate.");
198 }
199 } else {
200 if (ctrl) {
201 return tr("Click to add a new node. Release Ctrl to move existing nodes or hold Alt to delete.");
202 } else if (alt) {
203 return tr("Click to delete the highlighted node. Release Alt to move existing nodes or hold Ctrl to add new nodes.");
204 } else {
205 return tr("Click to move the highlighted node. Hold Ctrl to add new nodes, or Alt to delete.");
206 }
207 }
208 }
209
210 @Override
211 public boolean layerIsSupported(Layer l) {
212 return l instanceof OsmDataLayer;
213 }
214
215 @Override
216 protected void updateEnabledState() {
[10382]217 setEnabled(getLayerManager().getEditLayer() != null);
[4846]218 }
219
220 // -------------------------------------------------------------------------
221 // MapViewPaintable methods
222 // -------------------------------------------------------------------------
223 /**
224 * Redraws temporary layer. Highlights targetWay in select mode. Draws
225 * preview lines in improve mode and highlights the candidateNode
[10031]226 * @param g The graphics
227 * @param mv The map view
228 * @param bbox The bounding box
[4846]229 */
230 public void paint(Graphics2D g, MapView mv, Bounds bbox) {
231 if (mousePos == null) {
232 return;
233 }
234
235 g.setColor(guideColor);
236
[10875]237 if (state == State.SELECTING && targetWay != null) {
[4846]238 // Highlighting the targetWay in Selecting state
239 // Non-native highlighting is used, because sometimes highlighted
240 // segments are covered with others, which is bad.
[11144]241 BasicStroke stroke = SELECT_TARGET_WAY_STROKE.get();
242 g.setStroke(stroke);
[4846]243
244 List<Node> nodes = targetWay.getNodes();
245
[11144]246 g.draw(new MapViewPath(mv).append(nodes, false).computeClippedLine(stroke));
[4846]247
[10875]248 } else if (state == State.IMPROVING) {
[4846]249 // Drawing preview lines and highlighting the node
250 // that is going to be moved.
251 // Non-native highlighting is used here as well.
252
253 // Finding endpoints
[10875]254 Node p1 = null;
255 Node p2 = null;
[4846]256 if (ctrl && candidateSegment != null) {
[10875]257 g.setStroke(ADD_NODE_STROKE.get());
258 p1 = candidateSegment.getFirstNode();
259 p2 = candidateSegment.getSecondNode();
[4846]260 } else if (!alt && !ctrl && candidateNode != null) {
[10875]261 g.setStroke(MOVE_NODE_STROKE.get());
[4846]262 List<Pair<Node, Node>> wpps = targetWay.getNodePairs(false);
263 for (Pair<Node, Node> wpp : wpps) {
264 if (wpp.a == candidateNode) {
[10875]265 p1 = wpp.b;
[4846]266 }
267 if (wpp.b == candidateNode) {
[10875]268 p2 = wpp.a;
[4846]269 }
270 if (p1 != null && p2 != null) {
271 break;
272 }
273 }
274 } else if (alt && !ctrl && candidateNode != null) {
[10875]275 g.setStroke(DELETE_NODE_STROKE.get());
[4846]276 List<Node> nodes = targetWay.getNodes();
277 int index = nodes.indexOf(candidateNode);
278
279 // Only draw line if node is not first and/or last
280 if (index != 0 && index != (nodes.size() - 1)) {
[10875]281 p1 = nodes.get(index - 1);
282 p2 = nodes.get(index + 1);
[10701]283 } else if (targetWay.isClosed()) {
[10875]284 p1 = targetWay.getNode(1);
285 p2 = targetWay.getNode(nodes.size() - 2);
[4846]286 }
287 // TODO: indicate what part that will be deleted? (for end nodes)
288 }
289
290
291 // Drawing preview lines
[10875]292 MapViewPath b = new MapViewPath(mv);
[4846]293 if (alt && !ctrl) {
294 // In delete mode
295 if (p1 != null && p2 != null) {
[10875]296 b.moveTo(p1);
297 b.lineTo(p2);
[4846]298 }
299 } else {
300 // In add or move mode
301 if (p1 != null) {
302 b.moveTo(mousePos.x, mousePos.y);
[10875]303 b.lineTo(p1);
[4846]304 }
305 if (p2 != null) {
306 b.moveTo(mousePos.x, mousePos.y);
[10875]307 b.lineTo(p2);
[4846]308 }
309 }
[11144]310 g.draw(b.computeClippedLine(g.getStroke()));
[4846]311
312 // Highlighting candidateNode
313 if (candidateNode != null) {
[10875]314 p1 = candidateNode;
315 g.fill(new MapViewPath(mv).shapeAround(p1, SymbolShape.SQUARE, DOT_SIZE.get()));
[4846]316 }
317
[9358]318 if (!alt && !ctrl && candidateNode != null) {
319 b.reset();
320 drawIntersectingWayHelperLines(mv, b);
[10875]321 g.setStroke(MOVE_NODE_INTERSECTING_STROKE.get());
[11144]322 g.draw(b.computeClippedLine(g.getStroke()));
[9358]323 }
324
[4846]325 }
326 }
327
[10875]328 protected void drawIntersectingWayHelperLines(MapView mv, MapViewPath b) {
[9358]329 for (final OsmPrimitive referrer : candidateNode.getReferrers()) {
330 if (!(referrer instanceof Way) || targetWay.equals(referrer)) {
331 continue;
332 }
333 final List<Node> nodes = ((Way) referrer).getNodes();
334 for (int i = 0; i < nodes.size(); i++) {
335 if (!candidateNode.equals(nodes.get(i))) {
336 continue;
337 }
338 if (i > 0) {
339 b.moveTo(mousePos.x, mousePos.y);
[10875]340 b.lineTo(nodes.get(i - 1));
[9358]341 }
342 if (i < nodes.size() - 1) {
343 b.moveTo(mousePos.x, mousePos.y);
[10875]344 b.lineTo(nodes.get(i + 1));
[9358]345 }
346 }
347 }
348 }
349
[4846]350 // -------------------------------------------------------------------------
351 // Event handlers
352 // -------------------------------------------------------------------------
353 @Override
[12517]354 public void modifiersExChanged(int modifiers) {
[12630]355 if (!MainApplication.isDisplayingMapView() || !MainApplication.getMap().mapView.isActiveLayerDrawable()) {
[4846]356 return;
357 }
[12517]358 updateKeyModifiersEx(modifiers);
[4846]359 updateCursorDependentObjectsIfNeeded();
360 updateCursor();
361 updateStatusLine();
[10031]362 temporaryLayer.invalidate();
[4846]363 }
364
365 @Override
366 public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
367 if (selectionChangedBlocked) {
368 return;
369 }
370 updateStateByCurrentSelection();
371 }
372
373 @Override
374 public void mouseDragged(MouseEvent e) {
375 dragging = true;
376 mouseMoved(e);
377 }
378
379 @Override
380 public void mouseMoved(MouseEvent e) {
381 if (!isEnabled()) {
382 return;
383 }
384
385 mousePos = e.getPoint();
386
387 updateKeyModifiers(e);
388 updateCursorDependentObjectsIfNeeded();
389 updateCursor();
390 updateStatusLine();
[10031]391 temporaryLayer.invalidate();
[4846]392 }
393
394 @Override
395 public void mouseReleased(MouseEvent e) {
396 dragging = false;
397 if (!isEnabled() || e.getButton() != MouseEvent.BUTTON1) {
398 return;
399 }
400
401 updateKeyModifiers(e);
402 mousePos = e.getPoint();
403
[10875]404 if (state == State.SELECTING) {
[4846]405 if (targetWay != null) {
[10382]406 getLayerManager().getEditDataSet().setSelected(targetWay.getPrimitiveId());
[4846]407 updateStateByCurrentSelection();
408 }
[11381]409 } else if (state == State.IMPROVING) {
[4846]410 // Checking if the new coordinate is outside of the world
411 if (mv.getLatLon(mousePos.x, mousePos.y).isOutSideWorld()) {
412 JOptionPane.showMessageDialog(Main.parent,
[8915]413 tr("Cannot add a node outside of the world."),
[4846]414 tr("Warning"), JOptionPane.WARNING_MESSAGE);
415 return;
416 }
417
418 if (ctrl && !alt && candidateSegment != null) {
419 // Adding a new node to the highlighted segment
420 // Important: If there are other ways containing the same
421 // segment, a node must added to all of that ways.
[7005]422 Collection<Command> virtualCmds = new LinkedList<>();
[4846]423
424 // Creating a new node
425 Node virtualNode = new Node(mv.getEastNorth(mousePos.x,
426 mousePos.y));
427 virtualCmds.add(new AddCommand(virtualNode));
428
429 // Looking for candidateSegment copies in ways that are
430 // referenced
431 // by candidateSegment nodes
432 List<Way> firstNodeWays = OsmPrimitive.getFilteredList(
433 candidateSegment.getFirstNode().getReferrers(),
434 Way.class);
435 List<Way> secondNodeWays = OsmPrimitive.getFilteredList(
436 candidateSegment.getFirstNode().getReferrers(),
437 Way.class);
438
[7005]439 Collection<WaySegment> virtualSegments = new LinkedList<>();
[4846]440 for (Way w : firstNodeWays) {
441 List<Pair<Node, Node>> wpps = w.getNodePairs(true);
442 for (Way w2 : secondNodeWays) {
443 if (!w.equals(w2)) {
444 continue;
445 }
446 // A way is referenced in both nodes.
447 // Checking if there is such segment
448 int i = -1;
449 for (Pair<Node, Node> wpp : wpps) {
450 ++i;
[8345]451 boolean ab = wpp.a.equals(candidateSegment.getFirstNode())
452 && wpp.b.equals(candidateSegment.getSecondNode());
453 boolean ba = wpp.b.equals(candidateSegment.getFirstNode())
454 && wpp.a.equals(candidateSegment.getSecondNode());
455 if (ab || ba) {
[4846]456 virtualSegments.add(new WaySegment(w, i));
457 }
458 }
459 }
460 }
461
462 // Adding the node to all segments found
463 for (WaySegment virtualSegment : virtualSegments) {
464 Way w = virtualSegment.way;
465 Way wnew = new Way(w);
466 wnew.addNode(virtualSegment.lowerIndex + 1, virtualNode);
467 virtualCmds.add(new ChangeCommand(w, wnew));
468 }
469
470 // Finishing the sequence command
[6388]471 String text = trn("Add a new node to way",
472 "Add a new node to {0} ways",
[4846]473 virtualSegments.size(), virtualSegments.size());
474
[12641]475 MainApplication.undoRedo.add(new SequenceCommand(text, virtualCmds));
[4846]476
477 } else if (alt && !ctrl && candidateNode != null) {
478 // Deleting the highlighted node
479
480 //check to see if node is in use by more than one object
481 List<OsmPrimitive> referrers = candidateNode.getReferrers();
482 List<Way> ways = OsmPrimitive.getFilteredList(referrers, Way.class);
483 if (referrers.size() != 1 || ways.size() != 1) {
[8892]484 // detach node from way
485 final Way newWay = new Way(targetWay);
486 final List<Node> nodes = newWay.getNodes();
487 nodes.remove(candidateNode);
488 newWay.setNodes(nodes);
[11082]489 if (nodes.size() < 2) {
[12718]490 final Command deleteCmd = DeleteCommand.delete(Collections.singleton(targetWay), true);
[11082]491 if (deleteCmd != null) {
[12641]492 MainApplication.undoRedo.add(deleteCmd);
[11082]493 }
494 } else {
[12641]495 MainApplication.undoRedo.add(new ChangeCommand(targetWay, newWay));
[11082]496 }
[6355]497 } else if (candidateNode.isTagged()) {
[4846]498 JOptionPane.showMessageDialog(Main.parent,
499 tr("Cannot delete node that has tags"),
500 tr("Error"), JOptionPane.ERROR_MESSAGE);
501 } else {
[12718]502 final Command deleteCmd = DeleteCommand.delete(Collections.singleton(candidateNode), true);
[5947]503 if (deleteCmd != null) {
[12641]504 MainApplication.undoRedo.add(deleteCmd);
[5947]505 }
[4846]506 }
507
508
509 } else if (candidateNode != null) {
510 // Moving the highlighted node
511 EastNorth nodeEN = candidateNode.getEastNorth();
512 EastNorth cursorEN = mv.getEastNorth(mousePos.x, mousePos.y);
513
[12641]514 MainApplication.undoRedo.add(new MoveCommand(candidateNode, cursorEN.east() - nodeEN.east(), cursorEN.north() - nodeEN.north()));
[4846]515 }
516 }
517
518 mousePos = null;
519 updateCursor();
520 updateStatusLine();
[10031]521 temporaryLayer.invalidate();
[4846]522 }
523
524 @Override
525 public void mouseExited(MouseEvent e) {
526 if (!isEnabled()) {
527 return;
528 }
529
530 if (!dragging) {
531 mousePos = null;
532 }
[10031]533 temporaryLayer.invalidate();
[4846]534 }
535
536 // -------------------------------------------------------------------------
537 // Custom methods
538 // -------------------------------------------------------------------------
539 /**
540 * Sets new cursor depending on state, mouse position
541 */
542 private void updateCursor() {
543 if (!isEnabled()) {
544 mv.setNewCursor(null, this);
545 return;
546 }
547
[10875]548 if (state == State.SELECTING) {
[4846]549 mv.setNewCursor(targetWay == null ? cursorSelect
550 : cursorSelectHover, this);
[10875]551 } else if (state == State.IMPROVING) {
[4846]552 if (alt && !ctrl) {
553 mv.setNewCursor(cursorImproveDelete, this);
554 } else if (shift || dragging) {
555 if (ctrl) {
556 mv.setNewCursor(cursorImproveAddLock, this);
557 } else {
558 mv.setNewCursor(cursorImproveLock, this);
559 }
560 } else if (ctrl && !alt) {
561 mv.setNewCursor(cursorImproveAdd, this);
562 } else {
563 mv.setNewCursor(cursorImprove, this);
564 }
565 }
566 }
567
568 /**
569 * Updates these objects under cursor: targetWay, candidateNode,
570 * candidateSegment
571 */
572 public void updateCursorDependentObjectsIfNeeded() {
[10875]573 if (state == State.IMPROVING && (shift || dragging)
[4846]574 && !(candidateNode == null && candidateSegment == null)) {
575 return;
576 }
577
578 if (mousePos == null) {
579 candidateNode = null;
580 candidateSegment = null;
581 return;
582 }
583
[10875]584 if (state == State.SELECTING) {
[4846]585 targetWay = ImproveWayAccuracyHelper.findWay(mv, mousePos);
[10875]586 } else if (state == State.IMPROVING) {
[4846]587 if (ctrl && !alt) {
588 candidateSegment = ImproveWayAccuracyHelper.findCandidateSegment(mv,
589 targetWay, mousePos);
590 candidateNode = null;
591 } else {
592 candidateNode = ImproveWayAccuracyHelper.findCandidateNode(mv,
593 targetWay, mousePos);
594 candidateSegment = null;
595 }
596 }
597 }
598
599 /**
600 * Switches to Selecting state
601 */
602 public void startSelecting() {
[10875]603 state = State.SELECTING;
[4846]604
605 targetWay = null;
606
[10031]607 temporaryLayer.invalidate();
[4846]608 updateStatusLine();
609 }
610
611 /**
612 * Switches to Improving state
613 *
614 * @param targetWay Way that is going to be improved
615 */
616 public void startImproving(Way targetWay) {
[10875]617 state = State.IMPROVING;
[4846]618
[10382]619 DataSet ds = getLayerManager().getEditDataSet();
620 Collection<OsmPrimitive> currentSelection = ds.getSelected();
[4846]621 if (currentSelection.size() != 1
[5364]622 || !currentSelection.iterator().next().equals(targetWay)) {
[4846]623 selectionChangedBlocked = true;
[10382]624 ds.clearSelection();
625 ds.setSelected(targetWay.getPrimitiveId());
[4846]626 selectionChangedBlocked = false;
627 }
628
629 this.targetWay = targetWay;
630 this.candidateNode = null;
631 this.candidateSegment = null;
632
[10031]633 temporaryLayer.invalidate();
[4846]634 updateStatusLine();
635 }
636
637 /**
638 * Updates the state according to the current selection. Goes to Improve
639 * state if a single way or node is selected. Extracts a way by a node in
640 * the second case.
641 *
642 */
643 private void updateStateByCurrentSelection() {
[7005]644 final List<Node> nodeList = new ArrayList<>();
645 final List<Way> wayList = new ArrayList<>();
[10382]646 final Collection<OsmPrimitive> sel = getLayerManager().getEditDataSet().getSelected();
[4846]647
648 // Collecting nodes and ways from the selection
649 for (OsmPrimitive p : sel) {
650 if (p instanceof Way) {
651 wayList.add((Way) p);
652 }
653 if (p instanceof Node) {
654 nodeList.add((Node) p);
655 }
656 }
657
658 if (wayList.size() == 1) {
659 // Starting improving the single selected way
660 startImproving(wayList.get(0));
661 return;
[8318]662 } else if (nodeList.size() == 1) {
[4846]663 // Starting improving the only way of the single selected node
[8318]664 List<OsmPrimitive> r = nodeList.get(0).getReferrers();
665 if (r.size() == 1 && (r.get(0) instanceof Way)) {
666 startImproving((Way) r.get(0));
667 return;
[4846]668 }
669 }
670
671 // Starting selecting by default
672 startSelecting();
673 }
674}
Note: See TracBrowser for help on using the repository browser.