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.ChangeNodesCommand; 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 targetWay = null; 194 candidateNode = null; 195 candidateSegment = null; 196 } 197 198 @Override 199 protected void updateStatusLine() { 200 String newModeHelpText = getModeHelpText(); 201 if (!newModeHelpText.equals(oldModeHelpText)) { 202 oldModeHelpText = newModeHelpText; 203 MapFrame map = MainApplication.getMap(); 204 map.statusLine.setHelpText(newModeHelpText); 205 map.statusLine.repaint(); 206 } 207 } 208 209 @Override 210 public String getModeHelpText() { 211 if (state == State.SELECTING) { 212 if (targetWay != null) { 213 return tr("Click on the way to start improving its shape."); 214 } else { 215 return tr("Select a way that you want to make more accurate."); 216 } 217 } else { 218 if (ctrl) { 219 return tr("Click to add a new node. Release Ctrl to move existing nodes or hold Alt to delete."); 220 } else if (alt) { 221 return tr("Click to delete the highlighted node. Release Alt to move existing nodes or hold Ctrl to add new nodes."); 222 } else { 223 return tr("Click to move the highlighted node. Hold Ctrl to add new nodes, or Alt to delete."); 224 } 225 } 226 } 227 228 @Override 229 public boolean layerIsSupported(Layer l) { 230 return isEditableDataLayer(l); 231 } 232 233 @Override 234 protected void updateEnabledState() { 235 setEnabled(getLayerManager().getEditLayer() != null); 236 } 237 238 // ------------------------------------------------------------------------- 239 // MapViewPaintable methods 240 // ------------------------------------------------------------------------- 241 /** 242 * Redraws temporary layer. Highlights targetWay in select mode. Draws 243 * preview lines in improve mode and highlights the candidateNode 244 * @param g The graphics 245 * @param mv The map view 246 * @param bbox The bounding box 247 */ 248 public void paint(Graphics2D g, MapView mv, Bounds bbox) { 249 if (mousePos == null || (candidateNode != null && candidateNode.getDataSet() == null)) { 250 return; 251 } 252 253 g.setColor(guideColor); 254 255 if (state == State.SELECTING && targetWay != null) { 256 // Highlighting the targetWay in Selecting state 257 // Non-native highlighting is used, because sometimes highlighted 258 // segments are covered with others, which is bad. 259 BasicStroke stroke = SELECT_TARGET_WAY_STROKE.get(); 260 g.setStroke(stroke); 261 262 List<Node> nodes = targetWay.getNodes(); 263 264 g.draw(new MapViewPath(mv).append(nodes, false).computeClippedLine(stroke)); 265 266 } else if (state == State.IMPROVING) { 267 // Drawing preview lines and highlighting the node 268 // that is going to be moved. 269 // Non-native highlighting is used here as well. 270 271 // Finding endpoints 272 Node p1 = null; 273 Node p2 = null; 274 if (ctrl && candidateSegment != null) { 275 g.setStroke(ADD_NODE_STROKE.get()); 276 try { 277 p1 = candidateSegment.getFirstNode(); 278 p2 = candidateSegment.getSecondNode(); 279 } catch (ArrayIndexOutOfBoundsException e) { 280 Logging.error(e); 281 } 282 } else if (!alt && !ctrl && candidateNode != null) { 283 g.setStroke(MOVE_NODE_STROKE.get()); 284 List<Pair<Node, Node>> wpps = targetWay.getNodePairs(false); 285 for (Pair<Node, Node> wpp : wpps) { 286 if (wpp.a == candidateNode) { 287 p1 = wpp.b; 288 } 289 if (wpp.b == candidateNode) { 290 p2 = wpp.a; 291 } 292 if (p1 != null && p2 != null) { 293 break; 294 } 295 } 296 } else if (alt && !ctrl && candidateNode != null) { 297 g.setStroke(DELETE_NODE_STROKE.get()); 298 List<Node> nodes = targetWay.getNodes(); 299 int index = nodes.indexOf(candidateNode); 300 301 // Only draw line if node is not first and/or last 302 if (index > 0 && index < (nodes.size() - 1)) { 303 p1 = nodes.get(index - 1); 304 p2 = nodes.get(index + 1); 305 } else if (targetWay.isClosed()) { 306 p1 = targetWay.getNode(1); 307 p2 = targetWay.getNode(nodes.size() - 2); 308 } 309 // TODO: indicate what part that will be deleted? (for end nodes) 310 } 311 312 313 // Drawing preview lines 314 MapViewPath b = new MapViewPath(mv); 315 if (alt && !ctrl) { 316 // In delete mode 317 if (p1 != null && p2 != null) { 318 b.moveTo(p1); 319 b.lineTo(p2); 320 } 321 } else { 322 // In add or move mode 323 if (p1 != null) { 324 b.moveTo(mousePos.x, mousePos.y); 325 b.lineTo(p1); 326 } 327 if (p2 != null) { 328 b.moveTo(mousePos.x, mousePos.y); 329 b.lineTo(p2); 330 } 331 } 332 g.draw(b.computeClippedLine(g.getStroke())); 333 334 // Highlighting candidateNode 335 if (candidateNode != null) { 336 p1 = candidateNode; 337 g.fill(new MapViewPath(mv).shapeAround(p1, SymbolShape.SQUARE, DOT_SIZE.get())); 338 } 339 340 if (!alt && !ctrl && candidateNode != null) { 341 b.reset(); 342 drawIntersectingWayHelperLines(mv, b); 343 g.setStroke(MOVE_NODE_INTERSECTING_STROKE.get()); 344 g.draw(b.computeClippedLine(g.getStroke())); 345 } 346 347 } 348 } 349 350 protected void drawIntersectingWayHelperLines(MapView mv, MapViewPath b) { 351 for (final OsmPrimitive referrer : candidateNode.getReferrers()) { 352 if (!(referrer instanceof Way) || targetWay.equals(referrer)) { 353 continue; 354 } 355 final List<Node> nodes = ((Way) referrer).getNodes(); 356 for (int i = 0; i < nodes.size(); i++) { 357 if (!candidateNode.equals(nodes.get(i))) { 358 continue; 359 } 360 if (i > 0) { 361 b.moveTo(mousePos.x, mousePos.y); 362 b.lineTo(nodes.get(i - 1)); 363 } 364 if (i < nodes.size() - 1) { 365 b.moveTo(mousePos.x, mousePos.y); 366 b.lineTo(nodes.get(i + 1)); 367 } 368 } 369 } 370 } 371 372 // ------------------------------------------------------------------------- 373 // Event handlers 374 // ------------------------------------------------------------------------- 375 @Override 376 public void modifiersExChanged(int modifiers) { 377 if (!MainApplication.isDisplayingMapView() || !MainApplication.getMap().mapView.isActiveLayerDrawable()) { 378 return; 379 } 380 updateKeyModifiersEx(modifiers); 381 updateCursorDependentObjectsIfNeeded(); 382 updateCursor(); 383 updateStatusLine(); 384 temporaryLayer.invalidate(); 385 } 386 387 @Override 388 public void selectionChanged(SelectionChangeEvent event) { 389 if (selectionChangedBlocked) { 390 return; 391 } 392 updateStateByCurrentSelection(); 393 } 394 395 @Override 396 public void mouseDragged(MouseEvent e) { 397 dragging = true; 398 mouseMoved(e); 399 } 400 401 @Override 402 public void mouseMoved(MouseEvent e) { 403 if (!isEnabled()) { 404 return; 405 } 406 407 mousePos = e.getPoint(); 408 409 updateKeyModifiers(e); 410 updateCursorDependentObjectsIfNeeded(); 411 updateCursor(); 412 updateStatusLine(); 413 temporaryLayer.invalidate(); 414 } 415 416 @Override 417 public void mouseReleased(MouseEvent e) { 418 dragging = false; 419 if (!isEnabled() || e.getButton() != MouseEvent.BUTTON1) { 420 return; 421 } 422 423 DataSet ds = getLayerManager().getEditDataSet(); 424 updateKeyModifiers(e); 425 mousePos = e.getPoint(); 426 427 if (state == State.SELECTING) { 428 if (targetWay != null) { 429 ds.setSelected(targetWay.getPrimitiveId()); 430 updateStateByCurrentSelection(); 431 } 432 } else if (state == State.IMPROVING) { 433 // Checking if the new coordinate is outside of the world 434 if (new Node(mv.getEastNorth(mousePos.x, mousePos.y)).isOutSideWorld()) { 435 JOptionPane.showMessageDialog(MainApplication.getMainFrame(), 436 tr("Cannot add a node outside of the world."), 437 tr("Warning"), JOptionPane.WARNING_MESSAGE); 438 return; 439 } 440 441 if (ctrl && !alt && candidateSegment != null) { 442 // Add a new node to the highlighted segment. 443 Collection<WaySegment> virtualSegments = new LinkedList<>(); 444 445 // Check if other ways have the same segment. 446 // We have to make sure that we add the new node to all of them. 447 Set<Way> commonParentWays = new HashSet<>(candidateSegment.getFirstNode().getParentWays()); 448 commonParentWays.retainAll(candidateSegment.getSecondNode().getParentWays()); 449 for (Way w : commonParentWays) { 450 for (int i = 0; i < w.getNodesCount() - 1; i++) { 451 WaySegment testWS = new WaySegment(w, i); 452 if (testWS.isSimilar(candidateSegment)) { 453 virtualSegments.add(testWS); 454 } 455 } 456 } 457 458 Collection<Command> virtualCmds = new LinkedList<>(); 459 // Create the new node 460 Node virtualNode = new Node(mv.getEastNorth(mousePos.x, mousePos.y)); 461 virtualCmds.add(new AddCommand(ds, virtualNode)); 462 463 // Adding the node to all segments found 464 for (WaySegment virtualSegment : virtualSegments) { 465 Way w = virtualSegment.getWay(); 466 List<Node> modNodes = w.getNodes(); 467 modNodes.add(virtualSegment.getUpperIndex(), virtualNode); 468 virtualCmds.add(new ChangeNodesCommand(w, modNodes)); 469 } 470 471 // Finishing the sequence command 472 String text = trn("Add a new node to way", 473 "Add a new node to {0} ways", 474 virtualSegments.size(), virtualSegments.size()); 475 476 UndoRedoHandler.getInstance().add(new SequenceCommand(text, virtualCmds)); 477 478 } else if (alt && !ctrl && candidateNode != null) { 479 // Deleting the highlighted node 480 481 //check to see if node is in use by more than one object 482 long referrersCount = candidateNode.referrers(OsmPrimitive.class).count(); 483 long referrerWayCount = candidateNode.referrers(Way.class).count(); 484 if (referrersCount != 1 || referrerWayCount != 1) { 485 // detach node from way 486 final List<Node> nodes = targetWay.getNodes(); 487 nodes.remove(candidateNode); 488 if (nodes.size() < 2) { 489 final Command deleteCmd = DeleteCommand.delete(Collections.singleton(targetWay), true); 490 if (deleteCmd != null) { 491 UndoRedoHandler.getInstance().add(deleteCmd); 492 } 493 } else { 494 UndoRedoHandler.getInstance().add(new ChangeNodesCommand(targetWay, nodes)); 495 } 496 } else if (candidateNode.isTagged()) { 497 JOptionPane.showMessageDialog(MainApplication.getMainFrame(), 498 tr("Cannot delete node that has tags"), 499 tr("Error"), JOptionPane.ERROR_MESSAGE); 500 } else { 501 final Command deleteCmd = DeleteCommand.delete(Collections.singleton(candidateNode), true); 502 if (deleteCmd != null) { 503 UndoRedoHandler.getInstance().add(deleteCmd); 504 } 505 } 506 507 } else if (candidateNode != null) { 508 // Moving the highlighted node 509 EastNorth nodeEN = candidateNode.getEastNorth(); 510 EastNorth cursorEN = mv.getEastNorth(mousePos.x, mousePos.y); 511 512 UndoRedoHandler.getInstance().add( 513 new MoveCommand(candidateNode, cursorEN.east() - nodeEN.east(), cursorEN.north() - nodeEN.north())); 514 515 SelectAction.checkCommandForLargeDistance(UndoRedoHandler.getInstance().getLastCommand()); 516 } 517 } 518 519 mousePos = null; 520 updateCursor(); 521 updateStatusLine(); 522 temporaryLayer.invalidate(); 523 } 524 525 @Override 526 public void mouseExited(MouseEvent e) { 527 if (!isEnabled()) { 528 return; 529 } 530 531 if (!dragging) { 532 mousePos = null; 533 } 534 temporaryLayer.invalidate(); 535 } 536 537 // ------------------------------------------------------------------------- 538 // Custom methods 539 // ------------------------------------------------------------------------- 540 /** 541 * Sets new cursor depending on state, mouse position 542 */ 543 private void updateCursor() { 544 if (!isEnabled()) { 545 mv.setNewCursor(null, this); 546 return; 547 } 548 549 if (state == State.SELECTING) { 550 mv.setNewCursor(targetWay == null ? cursorSelect 551 : cursorSelectHover, this); 552 } else if (state == State.IMPROVING) { 553 if (alt && !ctrl) { 554 mv.setNewCursor(cursorImproveDelete, this); 555 } else if (shift || dragging) { 556 if (ctrl) { 557 mv.setNewCursor(cursorImproveAddLock, this); 558 } else { 559 mv.setNewCursor(cursorImproveLock, this); 560 } 561 } else if (ctrl && !alt) { 562 mv.setNewCursor(cursorImproveAdd, this); 563 } else { 564 mv.setNewCursor(cursorImprove, this); 565 } 566 } 567 } 568 569 /** 570 * Updates these objects under cursor: targetWay, candidateNode, 571 * candidateSegment 572 */ 573 public void updateCursorDependentObjectsIfNeeded() { 574 if (state == State.IMPROVING && (shift || dragging) 575 && !(candidateNode == null && candidateSegment == null)) { 576 return; 577 } 578 579 if (mousePos == null) { 580 candidateNode = null; 581 candidateSegment = null; 582 return; 583 } 584 585 if (state == State.SELECTING) { 586 targetWay = ImproveWayAccuracyHelper.findWay(mv, mousePos); 587 } else if (state == State.IMPROVING) { 588 if (ctrl && !alt) { 589 candidateSegment = ImproveWayAccuracyHelper.findCandidateSegment(mv, 590 targetWay, mousePos); 591 candidateNode = null; 592 } else { 593 candidateNode = ImproveWayAccuracyHelper.findCandidateNode(mv, 594 targetWay, mousePos); 595 candidateSegment = null; 596 } 597 } 598 } 599 600 /** 601 * Switches to Selecting state 602 */ 603 public void startSelecting() { 604 state = State.SELECTING; 605 606 targetWay = null; 607 608 temporaryLayer.invalidate(); 609 updateStatusLine(); 610 } 611 612 /** 613 * Switches to Improving state 614 * 615 * @param targetWay Way that is going to be improved 616 */ 617 public void startImproving(Way targetWay) { 618 state = State.IMPROVING; 619 620 DataSet ds = getLayerManager().getEditDataSet(); 621 Collection<OsmPrimitive> currentSelection = ds.getSelected(); 622 if (currentSelection.size() != 1 623 || !currentSelection.iterator().next().equals(targetWay)) { 624 selectionChangedBlocked = true; 625 ds.clearSelection(); 626 ds.setSelected(targetWay.getPrimitiveId()); 627 selectionChangedBlocked = false; 628 } 629 630 this.targetWay = targetWay; 631 this.candidateNode = null; 632 this.candidateSegment = null; 633 634 temporaryLayer.invalidate(); 635 updateStatusLine(); 636 } 637 638 /** 639 * Updates the state according to the current selection. Goes to Improve 640 * state if a single way or node is selected. Extracts a way by a node in 641 * the second case. 642 */ 643 private void updateStateByCurrentSelection() { 644 final List<Node> nodeList = new ArrayList<>(); 645 final List<Way> wayList = new ArrayList<>(); 646 final DataSet ds = getLayerManager().getEditDataSet(); 647 if (ds != null) { 648 final Collection<OsmPrimitive> sel = ds.getSelected(); 649 650 // Collecting nodes and ways from the selection 651 for (OsmPrimitive p : sel) { 652 if (p instanceof Way) { 653 wayList.add((Way) p); 654 } 655 if (p instanceof Node) { 656 nodeList.add((Node) p); 657 } 658 } 659 660 if (wayList.size() == 1) { 661 // Starting improving the single selected way 662 startImproving(wayList.get(0)); 663 return; 664 } else if (nodeList.size() == 1) { 665 // Starting improving the only way of the single selected node 666 List<OsmPrimitive> r = nodeList.get(0).getReferrers(); 667 if (r.size() == 1 && (r.get(0) instanceof Way)) { 668 startImproving((Way) r.get(0)); 669 return; 670 } 671 } 672 } 673 674 // Starting selecting by default 675 startSelecting(); 676 } 677 678 @Override 679 public void primitivesRemoved(PrimitivesRemovedEvent event) { 680 if (event.getPrimitives().contains(candidateNode) || event.getPrimitives().contains(targetWay)) { 681 updateCursorDependentObjectsIfNeeded(); 682 } 683 } 684 685 @Override 686 public void primitivesAdded(PrimitivesAddedEvent event) { 687 // Do nothing 688 } 689 690 @Override 691 public void tagsChanged(TagsChangedEvent event) { 692 // Do nothing 693 } 694 695 @Override 696 public void nodeMoved(NodeMovedEvent event) { 697 // Do nothing 698 } 699 700 @Override 701 public void wayNodesChanged(WayNodesChangedEvent event) { 702 // Do nothing 703 } 704 705 @Override 706 public void relationMembersChanged(RelationMembersChangedEvent event) { 707 // Do nothing 708 } 709 710 @Override 711 public void otherDatasetChange(AbstractDatasetChangedEvent event) { 712 // Do nothing 713 } 714 715 @Override 716 public void dataChanged(DataChangedEvent event) { 717 // Do nothing 718 } 719}