001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.actions.mapmode; 003 004import static org.openstreetmap.josm.tools.I18n.marktr; 005import static org.openstreetmap.josm.tools.I18n.tr; 006import static org.openstreetmap.josm.tools.I18n.trn; 007 008import java.awt.BasicStroke; 009import java.awt.Color; 010import java.awt.Cursor; 011import java.awt.Graphics2D; 012import java.awt.Point; 013import java.awt.event.KeyEvent; 014import java.awt.event.MouseEvent; 015import java.util.ArrayList; 016import java.util.Collection; 017import java.util.Collections; 018import java.util.HashSet; 019import java.util.LinkedList; 020import java.util.List; 021import java.util.Set; 022 023import javax.swing.JOptionPane; 024 025import org.openstreetmap.josm.command.AddCommand; 026import org.openstreetmap.josm.command.ChangeCommand; 027import org.openstreetmap.josm.command.Command; 028import org.openstreetmap.josm.command.DeleteCommand; 029import org.openstreetmap.josm.command.MoveCommand; 030import org.openstreetmap.josm.command.SequenceCommand; 031import org.openstreetmap.josm.data.Bounds; 032import org.openstreetmap.josm.data.UndoRedoHandler; 033import org.openstreetmap.josm.data.coor.EastNorth; 034import org.openstreetmap.josm.data.osm.DataSelectionListener; 035import org.openstreetmap.josm.data.osm.DataSet; 036import org.openstreetmap.josm.data.osm.Node; 037import org.openstreetmap.josm.data.osm.OsmPrimitive; 038import org.openstreetmap.josm.data.osm.Way; 039import org.openstreetmap.josm.data.osm.WaySegment; 040import org.openstreetmap.josm.data.osm.event.AbstractDatasetChangedEvent; 041import org.openstreetmap.josm.data.osm.event.DataChangedEvent; 042import org.openstreetmap.josm.data.osm.event.DataSetListener; 043import org.openstreetmap.josm.data.osm.event.DatasetEventManager; 044import org.openstreetmap.josm.data.osm.event.DatasetEventManager.FireMode; 045import org.openstreetmap.josm.data.osm.event.NodeMovedEvent; 046import org.openstreetmap.josm.data.osm.event.PrimitivesAddedEvent; 047import org.openstreetmap.josm.data.osm.event.PrimitivesRemovedEvent; 048import org.openstreetmap.josm.data.osm.event.RelationMembersChangedEvent; 049import org.openstreetmap.josm.data.osm.event.SelectionEventManager; 050import org.openstreetmap.josm.data.osm.event.TagsChangedEvent; 051import org.openstreetmap.josm.data.osm.event.WayNodesChangedEvent; 052import org.openstreetmap.josm.data.preferences.CachingProperty; 053import org.openstreetmap.josm.data.preferences.IntegerProperty; 054import org.openstreetmap.josm.data.preferences.NamedColorProperty; 055import org.openstreetmap.josm.data.preferences.StrokeProperty; 056import org.openstreetmap.josm.gui.MainApplication; 057import org.openstreetmap.josm.gui.MapFrame; 058import org.openstreetmap.josm.gui.MapView; 059import org.openstreetmap.josm.gui.draw.MapViewPath; 060import org.openstreetmap.josm.gui.draw.SymbolShape; 061import org.openstreetmap.josm.gui.layer.AbstractMapViewPaintable; 062import org.openstreetmap.josm.gui.layer.Layer; 063import org.openstreetmap.josm.gui.util.ModifierExListener; 064import org.openstreetmap.josm.tools.ImageProvider; 065import org.openstreetmap.josm.tools.Logging; 066import org.openstreetmap.josm.tools.Pair; 067import org.openstreetmap.josm.tools.Shortcut; 068 069/** 070 * A special map mode that is optimized for improving way geometry. 071 * (by efficiently moving, adding and deleting way-nodes) 072 * 073 * @author Alexander Kachkaev <alexander@kachkaev.ru>, 2011 074 */ 075public class ImproveWayAccuracyAction extends MapMode implements DataSelectionListener, DataSetListener, ModifierExListener { 076 077 private static final String CROSSHAIR = /* ICON(cursor/)*/ "crosshair"; 078 079 enum State { 080 SELECTING, IMPROVING 081 } 082 083 private State state; 084 085 private MapView mv; 086 087 private static final long serialVersionUID = 42L; 088 089 private transient Way targetWay; 090 private transient Node candidateNode; 091 private transient WaySegment candidateSegment; 092 093 private Point mousePos; 094 private boolean dragging; 095 096 private final Cursor cursorSelect = ImageProvider.getCursor(/* ICON(cursor/)*/ "normal", /* ICON(cursor/modifier/)*/ "mode"); 097 private final Cursor cursorSelectHover = ImageProvider.getCursor(/* ICON(cursor/)*/ "hand", /* ICON(cursor/modifier/)*/ "mode"); 098 private final Cursor cursorImprove = ImageProvider.getCursor(CROSSHAIR, null); 099 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}