// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.actions.mapmode;
import static org.openstreetmap.josm.gui.help.HelpUtil.ht;
import static org.openstreetmap.josm.tools.I18n.tr;
import static org.openstreetmap.josm.tools.I18n.trn;
import java.awt.Cursor;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Set;
import javax.swing.JOptionPane;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.actions.MergeNodesAction;
import org.openstreetmap.josm.command.AddCommand;
import org.openstreetmap.josm.command.ChangeCommand;
import org.openstreetmap.josm.command.Command;
import org.openstreetmap.josm.command.MoveCommand;
import org.openstreetmap.josm.command.RotateCommand;
import org.openstreetmap.josm.command.ScaleCommand;
import org.openstreetmap.josm.command.SequenceCommand;
import org.openstreetmap.josm.data.coor.EastNorth;
import org.openstreetmap.josm.data.coor.LatLon;
import org.openstreetmap.josm.data.osm.DataSet;
import org.openstreetmap.josm.data.osm.Node;
import org.openstreetmap.josm.data.osm.OsmPrimitive;
import org.openstreetmap.josm.data.osm.Way;
import org.openstreetmap.josm.data.osm.WaySegment;
import org.openstreetmap.josm.data.osm.visitor.AllNodesVisitor;
import org.openstreetmap.josm.data.osm.visitor.paint.WireframeMapRenderer;
import org.openstreetmap.josm.gui.ExtendedDialog;
import org.openstreetmap.josm.gui.MapFrame;
import org.openstreetmap.josm.gui.MapView;
import org.openstreetmap.josm.gui.MapViewState.MapViewPoint;
import org.openstreetmap.josm.gui.SelectionManager;
import org.openstreetmap.josm.gui.SelectionManager.SelectionEnded;
import org.openstreetmap.josm.gui.layer.Layer;
import org.openstreetmap.josm.gui.layer.OsmDataLayer;
import org.openstreetmap.josm.gui.util.GuiHelper;
import org.openstreetmap.josm.gui.util.KeyPressReleaseListener;
import org.openstreetmap.josm.gui.util.ModifierListener;
import org.openstreetmap.josm.tools.ImageProvider;
import org.openstreetmap.josm.tools.Pair;
import org.openstreetmap.josm.tools.Shortcut;
import org.openstreetmap.josm.tools.Utils;
/**
* Move is an action that can move all kind of OsmPrimitives (except keys for now).
*
* If an selected object is under the mouse when dragging, move all selected objects.
* If an unselected object is under the mouse when dragging, it becomes selected
* and will be moved.
* If no object is under the mouse, move all selected objects (if any)
*
* On Mac OS X, Ctrl + mouse button 1 simulates right click (map move), so the
* feature "selection remove" is disabled on this platform.
*/
public class SelectAction extends MapMode implements ModifierListener, KeyPressReleaseListener, SelectionEnded {
/**
* Select action mode.
* @since 7543
*/
public enum Mode {
/** "MOVE" means either dragging or select if no mouse movement occurs (i.e. just clicking) */
MOVE,
/** "ROTATE" allows to apply a rotation transformation on the selected object (see {@link RotateCommand}) */
ROTATE,
/** "SCALE" allows to apply a scaling transformation on the selected object (see {@link ScaleCommand}) */
SCALE,
/** "SELECT" means the selection rectangle */
SELECT
}
// contains all possible cases the cursor can be in the SelectAction
private enum SelectActionCursor {
rect("normal", /* ICON(cursor/modifier/) */ "selection"),
rect_add("normal", /* ICON(cursor/modifier/) */ "select_add"),
rect_rm("normal", /* ICON(cursor/modifier/) */ "select_remove"),
way("normal", /* ICON(cursor/modifier/) */ "select_way"),
way_add("normal", /* ICON(cursor/modifier/) */ "select_way_add"),
way_rm("normal", /* ICON(cursor/modifier/) */ "select_way_remove"),
node("normal", /* ICON(cursor/modifier/) */ "select_node"),
node_add("normal", /* ICON(cursor/modifier/) */ "select_node_add"),
node_rm("normal", /* ICON(cursor/modifier/) */ "select_node_remove"),
virtual_node("normal", /* ICON(cursor/modifier/) */ "addnode"),
scale(/* ICON(cursor/) */ "scale", null),
rotate(/* ICON(cursor/) */ "rotate", null),
merge(/* ICON(cursor/) */ "crosshair", null),
lasso("normal", /* ICON(cursor/modifier/) */ "rope"),
merge_to_node("crosshair", /* ICON(cursor/modifier/) */ "joinnode"),
move(Cursor.MOVE_CURSOR);
private final Cursor c;
SelectActionCursor(String main, String sub) {
c = ImageProvider.getCursor(main, sub);
}
SelectActionCursor(int systemCursor) {
c = Cursor.getPredefinedCursor(systemCursor);
}
public Cursor cursor() {
return c;
}
}
private boolean lassoMode;
public boolean repeatedKeySwitchLassoOption;
// Cache previous mouse event (needed when only the modifier keys are
// pressed but the mouse isn't moved)
private MouseEvent oldEvent;
private Mode mode;
private final transient SelectionManager selectionManager;
private boolean cancelDrawMode;
private boolean drawTargetHighlight;
private boolean didMouseDrag;
/**
* The component this SelectAction is associated with.
*/
private final MapView mv;
/**
* The old cursor before the user pressed the mouse button.
*/
private Point startingDraggingPos;
/**
* point where user pressed the mouse to start movement
*/
private EastNorth startEN;
/**
* The last known position of the mouse.
*/
private Point lastMousePos;
/**
* The time of the user mouse down event.
*/
private long mouseDownTime;
/**
* The pressed button of the user mouse down event.
*/
private int mouseDownButton;
/**
* The time of the user mouse down event.
*/
private long mouseReleaseTime;
/**
* The time which needs to pass between click and release before something
* counts as a move, in milliseconds
*/
private int initialMoveDelay;
/**
* The screen distance which needs to be travelled before something
* counts as a move, in pixels
*/
private int initialMoveThreshold;
private boolean initialMoveThresholdExceeded;
/**
* elements that have been highlighted in the previous iteration. Used
* to remove the highlight from them again as otherwise the whole data
* set would have to be checked.
*/
private transient Set<OsmPrimitive> oldHighlights = new HashSet<>();
/**
* Create a new SelectAction
* @param mapFrame The MapFrame this action belongs to.
*/
public SelectAction(MapFrame mapFrame) {
super(tr("Select"), "move/move", tr("Select, move, scale and rotate objects"),
Shortcut.registerShortcut("mapmode:select", tr("Mode: {0}", tr("Select")), KeyEvent.VK_S, Shortcut.DIRECT),
ImageProvider.getCursor("normal", "selection"));
mv = mapFrame.mapView;
putValue("help", ht("/Action/Select"));
selectionManager = new SelectionManager(this, false, mv);
}
@Override
public void enterMode() {
super.enterMode();
mv.addMouseListener(this);
mv.addMouseMotionListener(this);
mv.setVirtualNodesEnabled(Main.pref.getInteger("mappaint.node.virtual-size", 8) != 0);
drawTargetHighlight = Main.pref.getBoolean("draw.target-highlight", true);
initialMoveDelay = Main.pref.getInteger("edit.initial-move-delay", 200);
initialMoveThreshold = Main.pref.getInteger("edit.initial-move-threshold", 5);
repeatedKeySwitchLassoOption = Main.pref.getBoolean("mappaint.select.toggle-lasso-on-repeated-S", true);
cycleManager.init();
virtualManager.init();
// This is required to update the cursors when ctrl/shift/alt is pressed
Main.map.keyDetector.addModifierListener(this);
Main.map.keyDetector.addKeyListener(this);
}
@Override
public void exitMode() {
super.exitMode();
selectionManager.unregister(mv);
mv.removeMouseListener(this);
mv.removeMouseMotionListener(this);
mv.setVirtualNodesEnabled(false);
Main.map.keyDetector.removeModifierListener(this);
Main.map.keyDetector.removeKeyListener(this);
removeHighlighting();
}
@Override
public void modifiersChanged(int modifiers) {
if (!Main.isDisplayingMapView() || oldEvent == null) return;
if (giveUserFeedback(oldEvent, modifiers)) {
mv.repaint();
}
}
/**
* handles adding highlights and updating the cursor for the given mouse event.
* Please note that the highlighting for merging while moving is handled via mouseDragged.
* @param e {@code MouseEvent} which should be used as base for the feedback
* @return {@code true} if repaint is required
*/
private boolean giveUserFeedback(MouseEvent e) {
return giveUserFeedback(e, e.getModifiers());
}
/**
* handles adding highlights and updating the cursor for the given mouse event.
* Please note that the highlighting for merging while moving is handled via mouseDragged.
* @param e {@code MouseEvent} which should be used as base for the feedback
* @param modifiers define custom keyboard modifiers if the ones from MouseEvent are outdated or similar
* @return {@code true} if repaint is required
*/
private boolean giveUserFeedback(MouseEvent e, int modifiers) {
Collection<OsmPrimitive> c = asColl(
mv.getNearestNodeOrWay(e.getPoint(), mv.isSelectablePredicate, true));
updateKeyModifiers(modifiers);
determineMapMode(!c.isEmpty());
Set<OsmPrimitive> newHighlights = new HashSet<>();
virtualManager.clear();
if (mode == Mode.MOVE && !dragInProgress() && virtualManager.activateVirtualNodeNearPoint(e.getPoint())) {
DataSet ds = getLayerManager().getEditDataSet();
if (ds != null && drawTargetHighlight) {
ds.setHighlightedVirtualNodes(virtualManager.virtualWays);
}
mv.setNewCursor(SelectActionCursor.virtual_node.cursor(), this);
// don't highlight anything else if a virtual node will be
return repaintIfRequired(newHighlights);
}
mv.setNewCursor(getCursor(c), this);
// return early if there can't be any highlights
if (!drawTargetHighlight || mode != Mode.MOVE || c.isEmpty())
return repaintIfRequired(newHighlights);
// CTRL toggles selection, but if while dragging CTRL means merge
final boolean isToggleMode = ctrl && !dragInProgress();
for (OsmPrimitive x : c) {
// only highlight primitives that will change the selection
// when clicked. I.e. don't highlight selected elements unless
// we are in toggle mode.
if (isToggleMode || !x.isSelected()) {
newHighlights.add(x);
}
}
return repaintIfRequired(newHighlights);
}
/**
* works out which cursor should be displayed for most of SelectAction's
* features. The only exception is the "move" cursor when actually dragging
* primitives.
* @param nearbyStuff primitives near the cursor
* @return the cursor that should be displayed
*/
private Cursor getCursor(Collection<OsmPrimitive> nearbyStuff) {
String c = "rect";
switch(mode) {
case MOVE:
if (virtualManager.hasVirtualNode()) {
c = "virtual_node";
break;
}
final Iterator<OsmPrimitive> it = nearbyStuff.iterator();
final OsmPrimitive osm = it.hasNext() ? it.next() : null;
if (dragInProgress()) {
// only consider merge if ctrl is pressed and there are nodes in
// the selection that could be merged
if (!ctrl || getLayerManager().getEditDataSet().getSelectedNodes().isEmpty()) {
c = "move";
break;
}
// only show merge to node cursor if nearby node and that node is currently
// not being dragged
final boolean hasTarget = osm instanceof Node && !osm.isSelected();
c = hasTarget ? "merge_to_node" : "merge";
break;
}
c = (osm instanceof Node) ? "node" : c;
c = (osm instanceof Way) ? "way" : c;
if (shift) {
c += "_add";
} else if (ctrl) {
c += osm == null || osm.isSelected() ? "_rm" : "_add";
}
break;
case ROTATE:
c = "rotate";
break;
case SCALE:
c = "scale";
break;
case SELECT:
if (lassoMode) {
c = "lasso";
} else {
c = "rect" + (shift ? "_add" : (ctrl && !Main.isPlatformOsx() ? "_rm" : ""));
}
break;
}
return SelectActionCursor.valueOf(c).cursor();
}
/**
* Removes all existing highlights.
* @return true if a repaint is required
*/
private boolean removeHighlighting() {
boolean needsRepaint = false;
DataSet ds = getLayerManager().getEditDataSet();
if (ds != null && !ds.getHighlightedVirtualNodes().isEmpty()) {
needsRepaint = true;
ds.clearHighlightedVirtualNodes();
}
if (oldHighlights.isEmpty())
return needsRepaint;
for (OsmPrimitive prim : oldHighlights) {
prim.setHighlighted(false);
}
oldHighlights = new HashSet<>();
return true;
}
private boolean repaintIfRequired(Set<OsmPrimitive> newHighlights) {
if (!drawTargetHighlight)
return false;
boolean needsRepaint = false;
for (OsmPrimitive x : newHighlights) {
if (oldHighlights.contains(x)) {
continue;
}
needsRepaint = true;
x.setHighlighted(true);
}
oldHighlights.removeAll(newHighlights);
for (OsmPrimitive x : oldHighlights) {
x.setHighlighted(false);
needsRepaint = true;
}
oldHighlights = newHighlights;
return needsRepaint;
}
/**
* Look, whether any object is selected. If not, select the nearest node.
* If there are no nodes in the dataset, do nothing.
*
* If the user did not press the left mouse button, do nothing.
*
* Also remember the starting position of the movement and change the mouse
* cursor to movement.
*/
@Override
public void mousePressed(MouseEvent e) {
mouseDownButton = e.getButton();
// return early
if (!mv.isActiveLayerVisible() || !(Boolean) this.getValue("active") || mouseDownButton != MouseEvent.BUTTON1)
return;
// left-button mouse click only is processed here
// request focus in order to enable the expected keyboard shortcuts
mv.requestFocus();
// update which modifiers are pressed (shift, alt, ctrl)
updateKeyModifiers(e);
// We don't want to change to draw tool if the user tries to (de)select
// stuff but accidentally clicks in an empty area when selection is empty
cancelDrawMode = shift || ctrl;
didMouseDrag = false;
initialMoveThresholdExceeded = false;
mouseDownTime = System.currentTimeMillis();
lastMousePos = e.getPoint();
startEN = mv.getEastNorth(lastMousePos.x, lastMousePos.y);
// primitives under cursor are stored in c collection
OsmPrimitive nearestPrimitive = mv.getNearestNodeOrWay(e.getPoint(), mv.isSelectablePredicate, true);
determineMapMode(nearestPrimitive != null);
switch(mode) {
case ROTATE:
case SCALE:
// if nothing was selected, select primitive under cursor for scaling or rotating
DataSet ds = getLayerManager().getEditDataSet();
if (ds.selectionEmpty()) {
ds.setSelected(asColl(nearestPrimitive));
}
// Mode.select redraws when selectPrims is called
// Mode.move redraws when mouseDragged is called
// Mode.rotate redraws here
// Mode.scale redraws here
break;
case MOVE:
// also include case when some primitive is under cursor and no shift+ctrl / alt+ctrl is pressed
// so this is not movement, but selection on primitive under cursor
if (!cancelDrawMode && nearestPrimitive instanceof Way) {
virtualManager.activateVirtualNodeNearPoint(e.getPoint());
}
OsmPrimitive toSelect = cycleManager.cycleSetup(nearestPrimitive, e.getPoint());
selectPrims(asColl(toSelect), false, false);
useLastMoveCommandIfPossible();
// Schedule a timer to update status line "initialMoveDelay+1" ms in the future
GuiHelper.scheduleTimer(initialMoveDelay+1, evt -> updateStatusLine(), false);
break;
case SELECT:
default:
if (!(ctrl && Main.isPlatformOsx())) {
// start working with rectangle or lasso
selectionManager.register(mv, lassoMode);
selectionManager.mousePressed(e);
break;
}
}
if (giveUserFeedback(e)) {
mv.repaint();
}
updateStatusLine();
}
@Override
public void mouseMoved(MouseEvent e) {
// Mac OSX simulates with ctrl + mouse 1 the second mouse button hence no dragging events get fired.
if (Main.isPlatformOsx() && (mode == Mode.ROTATE || mode == Mode.SCALE)) {
mouseDragged(e);
return;
}
oldEvent = e;
if (giveUserFeedback(e)) {
mv.repaint();
}
}
/**
* If the left mouse button is pressed, move all currently selected
* objects (if one of them is under the mouse) or the current one under the
* mouse (which will become selected).
*/
@Override
public void mouseDragged(MouseEvent e) {
if (!mv.isActiveLayerVisible())
return;
// Swing sends random mouseDragged events when closing dialogs by double-clicking their top-left icon on Windows
// Ignore such false events to prevent issues like #7078
if (mouseDownButton == MouseEvent.BUTTON1 && mouseReleaseTime > mouseDownTime)
return;
cancelDrawMode = true;
if (mode == Mode.SELECT) {
// Unregisters selectionManager if ctrl has been pressed after mouse click on Mac OS X in order to move the map
if (ctrl && Main.isPlatformOsx()) {
selectionManager.unregister(mv);
// Make sure correct cursor is displayed
mv.setNewCursor(Cursor.MOVE_CURSOR, this);
}
return;
}
// do not count anything as a move if it lasts less than 100 milliseconds.
if ((mode == Mode.MOVE) && (System.currentTimeMillis() - mouseDownTime < initialMoveDelay))
return;
if (mode != Mode.ROTATE && mode != Mode.SCALE && (e.getModifiersEx() & MouseEvent.BUTTON1_DOWN_MASK) == 0) {
// button is pressed in rotate mode
return;
}
if (mode == Mode.MOVE) {
// If ctrl is pressed we are in merge mode. Look for a nearby node,
// highlight it and adjust the cursor accordingly.
final boolean canMerge = ctrl && !getLayerManager().getEditDataSet().getSelectedNodes().isEmpty();
final OsmPrimitive p = canMerge ? findNodeToMergeTo(e.getPoint()) : null;
boolean needsRepaint = removeHighlighting();
if (p != null) {
p.setHighlighted(true);
oldHighlights.add(p);
needsRepaint = true;
}
mv.setNewCursor(getCursor(asColl(p)), this);
// also update the stored mouse event, so we can display the correct cursor
// when dragging a node onto another one and then press CTRL to merge
oldEvent = e;
if (needsRepaint) {
mv.repaint();
}
}
if (startingDraggingPos == null) {
startingDraggingPos = new Point(e.getX(), e.getY());
}
if (lastMousePos == null) {
lastMousePos = e.getPoint();
return;
}
if (!initialMoveThresholdExceeded) {
int dp = (int) lastMousePos.distance(e.getX(), e.getY());
if (dp < initialMoveThreshold)
return; // ignore small drags
initialMoveThresholdExceeded = true; //no more ingnoring uintil nex mouse press
}
if (e.getPoint().equals(lastMousePos))
return;
EastNorth currentEN = mv.getEastNorth(e.getX(), e.getY());
if (virtualManager.hasVirtualWaysToBeConstructed()) {
virtualManager.createMiddleNodeFromVirtual(currentEN);
} else {
if (!updateCommandWhileDragging(currentEN)) return;
}
mv.repaint();
if (mode != Mode.SCALE) {
lastMousePos = e.getPoint();
}
didMouseDrag = true;
}
@Override
public void mouseExited(MouseEvent e) {
if (removeHighlighting()) {
mv.repaint();
}
}
@Override
public void mouseReleased(MouseEvent e) {
if (!mv.isActiveLayerVisible())
return;
startingDraggingPos = null;
mouseReleaseTime = System.currentTimeMillis();
if (mode == Mode.SELECT) {
if (e.getButton() != MouseEvent.BUTTON1) {
return;
}
selectionManager.endSelecting(e);
selectionManager.unregister(mv);
// Select Draw Tool if no selection has been made
if (!cancelDrawMode && getLayerManager().getEditDataSet().selectionEmpty()) {
Main.map.selectDrawTool(true);
updateStatusLine();
return;
}
}
if (mode == Mode.MOVE && e.getButton() == MouseEvent.BUTTON1) {
if (!didMouseDrag) {
// only built in move mode
virtualManager.clear();
// do nothing if the click was to short too be recognized as a drag,
// but the release position is farther than 10px away from the press position
if (lastMousePos == null || lastMousePos.distanceSq(e.getPoint()) < 100) {
updateKeyModifiers(e);
selectPrims(cycleManager.cyclePrims(), true, false);
// If the user double-clicked a node, change to draw mode
Collection<OsmPrimitive> c = getLayerManager().getEditDataSet().getSelected();
if (e.getClickCount() >= 2 && c.size() == 1 && c.iterator().next() instanceof Node) {
// We need to do it like this as otherwise drawAction will see a double
// click and switch back to SelectMode
Main.worker.execute(() -> Main.map.selectDrawTool(true));
return;
}
}
} else {
confirmOrUndoMovement(e);
}
}
mode = null;
// simply remove any highlights if the middle click popup is active because
// the highlights don't depend on the cursor position there. If something was
// selected beforehand this would put us into move mode as well, which breaks
// the cycling through primitives on top of each other (see #6739).
if (e.getButton() == MouseEvent.BUTTON2) {
removeHighlighting();
} else {
giveUserFeedback(e);
}
updateStatusLine();
}
@Override
public void selectionEnded(Rectangle r, MouseEvent e) {
updateKeyModifiers(e);
selectPrims(selectionManager.getSelectedObjects(alt), true, true);
}
@Override
public void doKeyPressed(KeyEvent e) {
if (!repeatedKeySwitchLassoOption || !Main.isDisplayingMapView() || !getShortcut().isEvent(e))
return;
if (Main.isDebugEnabled()) {
Main.debug(getClass().getName()+" consuming event "+e);
}
e.consume();
if (!lassoMode) {
Main.map.selectMapMode(Main.map.mapModeSelectLasso);
} else {
Main.map.selectMapMode(Main.map.mapModeSelect);
}
}
@Override
public void doKeyReleased(KeyEvent e) {
// Do nothing
}
/**
* sets the mapmode according to key modifiers and if there are any
* selectables nearby. Everything has to be pre-determined for this
* function; its main purpose is to centralize what the modifiers do.
* @param hasSelectionNearby {@code true} if some primitves are selectable nearby
*/
private void determineMapMode(boolean hasSelectionNearby) {
if (shift && ctrl) {
mode = Mode.ROTATE;
} else if (alt && ctrl) {
mode = Mode.SCALE;
} else if (hasSelectionNearby || dragInProgress()) {
mode = Mode.MOVE;
} else {
mode = Mode.SELECT;
}
}
/**
* Determines whenever elements have been grabbed and moved (i.e. the initial
* thresholds have been exceeded) and is still in progress (i.e. mouse button still pressed)
* @return true if a drag is in progress
*/
private boolean dragInProgress() {
return didMouseDrag && startingDraggingPos != null;
}
/**
* Create or update data modification command while dragging mouse - implementation of
* continuous moving, scaling and rotation
* @param currentEN - mouse position
* @return status of action (<code>true</code> when action was performed)
*/
private boolean updateCommandWhileDragging(EastNorth currentEN) {
// Currently we support only transformations which do not affect relations.
// So don't add them in the first place to make handling easier
DataSet ds = getLayerManager().getEditDataSet();
Collection<OsmPrimitive> selection = ds.getSelectedNodesAndWays();
if (selection.isEmpty()) { // if nothing was selected to drag, just select nearest node/way to the cursor
OsmPrimitive nearestPrimitive = mv.getNearestNodeOrWay(mv.getPoint(startEN), mv.isSelectablePredicate, true);
ds.setSelected(nearestPrimitive);
}
Collection<Node> affectedNodes = AllNodesVisitor.getAllNodes(selection);
// for these transformations, having only one node makes no sense - quit silently
if (affectedNodes.size() < 2 && (mode == Mode.ROTATE || mode == Mode.SCALE)) {
return false;
}
Command c = getLastCommand();
if (mode == Mode.MOVE) {
if (startEN == null) return false; // fix #8128
ds.beginUpdate();
if (c instanceof MoveCommand && affectedNodes.equals(((MoveCommand) c).getParticipatingPrimitives())) {
((MoveCommand) c).saveCheckpoint();
((MoveCommand) c).applyVectorTo(currentEN);
} else {
c = new MoveCommand(selection, startEN, currentEN);
Main.main.undoRedo.add(c);
}
for (Node n : affectedNodes) {
LatLon ll = n.getCoor();
if (ll != null && ll.isOutSideWorld()) {
// Revert move
((MoveCommand) c).resetToCheckpoint();
ds.endUpdate();
JOptionPane.showMessageDialog(
Main.parent,
tr("Cannot move objects outside of the world."),
tr("Warning"),
JOptionPane.WARNING_MESSAGE);
mv.setNewCursor(cursor, this);
return false;
}
}
} else {
startEN = currentEN; // drag can continue after scaling/rotation
if (mode != Mode.ROTATE && mode != Mode.SCALE) {
return false;
}
ds.beginUpdate();
if (mode == Mode.ROTATE) {
if (c instanceof RotateCommand && affectedNodes.equals(((RotateCommand) c).getTransformedNodes())) {
((RotateCommand) c).handleEvent(currentEN);
} else {
Main.main.undoRedo.add(new RotateCommand(selection, currentEN));
}
} else if (mode == Mode.SCALE) {
if (c instanceof ScaleCommand && affectedNodes.equals(((ScaleCommand) c).getTransformedNodes())) {
((ScaleCommand) c).handleEvent(currentEN);
} else {
Main.main.undoRedo.add(new ScaleCommand(selection, currentEN));
}
}
Collection<Way> ways = ds.getSelectedWays();
if (doesImpactStatusLine(affectedNodes, ways)) {
Main.map.statusLine.setDist(ways);
}
}
ds.endUpdate();
return true;
}
private static boolean doesImpactStatusLine(Collection<Node> affectedNodes, Collection<Way> selectedWays) {
for (Way w : selectedWays) {
for (Node n : w.getNodes()) {
if (affectedNodes.contains(n)) {
return true;
}
}
}
return false;
}
/**
* Adapt last move command (if it is suitable) to work with next drag, started at point startEN
*/
private void useLastMoveCommandIfPossible() {
Command c = getLastCommand();
Collection<Node> affectedNodes = AllNodesVisitor.getAllNodes(getLayerManager().getEditDataSet().getSelected());
if (c instanceof MoveCommand && affectedNodes.equals(((MoveCommand) c).getParticipatingPrimitives())) {
// old command was created with different base point of movement, we need to recalculate it
((MoveCommand) c).changeStartPoint(startEN);
}
}
/**
* Obtain command in undoRedo stack to "continue" when dragging
* @return last command
*/
private static Command getLastCommand() {
Command c = !Main.main.undoRedo.commands.isEmpty()
? Main.main.undoRedo.commands.getLast() : null;
if (c instanceof SequenceCommand) {
c = ((SequenceCommand) c).getLastCommand();
}
return c;
}
/**
* Present warning in the following cases and undo unwanted movements: <ul>
* <li>large and possibly unwanted movements</li>
* <li>movement of node with attached ways that are hidden by filters</li>
* </ul>
*
* @param e the mouse event causing the action (mouse released)
*/
private void confirmOrUndoMovement(MouseEvent e) {
if (movesHiddenWay()) {
final ExtendedDialog ed = new ConfirmMoveDialog();
ed.setContent(tr("Are you sure that you want to move elements with attached ways that are hidden by filters?"));
ed.toggleEnable("movedHiddenElements");
ed.showDialog();
if (ed.getValue() != 1) {
Main.main.undoRedo.undo();
}
}
int max = Main.pref.getInteger("warn.move.maxelements", 20), limit = max;
for (OsmPrimitive osm : getLayerManager().getEditDataSet().getSelected()) {
if (osm instanceof Way) {
limit -= ((Way) osm).getNodes().size();
}
if (--limit < 0) {
break;
}
}
if (limit < 0) {
final ExtendedDialog ed = new ConfirmMoveDialog();
ed.setContent(
/* for correct i18n of plural forms - see #9110 */
trn("You moved more than {0} element. " + "Moving a large number of elements is often an error.\n" + "Really move them?",
"You moved more than {0} elements. " + "Moving a large number of elements is often an error.\n" + "Really move them?",
max, max));
ed.toggleEnable("movedManyElements");
ed.showDialog();
if (ed.getValue() != 1) {
Main.main.undoRedo.undo();
}
} else {
// if small number of elements were moved,
updateKeyModifiers(e);
if (ctrl) mergePrims(e.getPoint());
}
getLayerManager().getEditDataSet().fireSelectionChanged();
}
static class ConfirmMoveDialog extends ExtendedDialog {
ConfirmMoveDialog() {
super(Main.parent,
tr("Move elements"),
new String[]{tr("Move them"), tr("Undo move")});
setButtonIcons(new String[]{"reorder", "cancel"});
setCancelButton(2);
}
}
private boolean movesHiddenWay() {
DataSet ds = getLayerManager().getEditDataSet();
final Collection<OsmPrimitive> elementsToTest = new HashSet<>(ds.getSelected());
for (Way osm : Utils.filteredCollection(ds.getSelected(), Way.class)) {
elementsToTest.addAll(osm.getNodes());
}
for (OsmPrimitive node : Utils.filteredCollection(elementsToTest, Node.class)) {
for (Way ref : Utils.filteredCollection(node.getReferrers(), Way.class)) {
if (ref.isDisabledAndHidden()) {
return true;
}
}
}
return false;
}
/**
* Merges the selected nodes to the one closest to the given mouse position if the control
* key is pressed. If there is no such node, no action will be done and no error will be
* reported. If there is, it will execute the merge and add it to the undo buffer.
* @param p mouse position
*/
private void mergePrims(Point p) {
DataSet ds = getLayerManager().getEditDataSet();
Collection<Node> selNodes = ds.getSelectedNodes();
if (selNodes.isEmpty())
return;
Node target = findNodeToMergeTo(p);
if (target == null)
return;
if (selNodes.size() == 1) {
// Move all selected primitive to preserve shape #10748
Collection<OsmPrimitive> selection = ds.getSelectedNodesAndWays();
Collection<Node> affectedNodes = AllNodesVisitor.getAllNodes(selection);
Command c = getLastCommand();
ds.beginUpdate();
if (c instanceof MoveCommand
&& affectedNodes.equals(((MoveCommand) c).getParticipatingPrimitives())) {
Node selectedNode = selNodes.iterator().next();
EastNorth selectedEN = selectedNode.getEastNorth();
EastNorth targetEN = target.getEastNorth();
((MoveCommand) c).moveAgain(targetEN.getX() - selectedEN.getX(),
targetEN.getY() - selectedEN.getY());
}
ds.endUpdate();
}
Collection<Node> nodesToMerge = new LinkedList<>(selNodes);
nodesToMerge.add(target);
mergeNodes(Main.getLayerManager().getEditLayer(), nodesToMerge, target);
}
/**
* Merge nodes using {@code MergeNodesAction}.
* Can be overridden for testing purpose.
* @param layer layer the reference data layer. Must not be null
* @param nodes the collection of nodes. Ignored if null
* @param targetLocationNode this node's location will be used for the target node
*/
public void mergeNodes(OsmDataLayer layer, Collection<Node> nodes,
Node targetLocationNode) {
MergeNodesAction.doMergeNodes(layer, nodes, targetLocationNode);
}
/**
* Tries to find a node to merge to when in move-merge mode for the current mouse
* position. Either returns the node or null, if no suitable one is nearby.
* @param p mouse position
* @return node to merge to, or null
*/
private Node findNodeToMergeTo(Point p) {
Collection<Node> target = mv.getNearestNodes(p,
getLayerManager().getEditDataSet().getSelectedNodes(),
mv.isSelectablePredicate);
return target.isEmpty() ? null : target.iterator().next();
}
private void selectPrims(Collection<OsmPrimitive> prims, boolean released, boolean area) {
DataSet ds = getLayerManager().getEditDataSet();
// not allowed together: do not change dataset selection, return early
// Virtual Ways: if non-empty the cursor is above a virtual node. So don't highlight
// anything if about to drag the virtual node (i.e. !released) but continue if the
// cursor is only released above a virtual node by accident (i.e. released). See #7018
if (ds == null || (shift && ctrl) || (ctrl && !released) || (virtualManager.hasVirtualWaysToBeConstructed() && !released))
return;
if (!released) {
// Don't replace the selection if the user clicked on a
// selected object (it breaks moving of selected groups).
// Do it later, on mouse release.
shift |= ds.getSelected().containsAll(prims);
}
if (ctrl) {
// Ctrl on an item toggles its selection status,
// but Ctrl on an *area* just clears those items
// out of the selection.
if (area) {
ds.clearSelection(prims);
} else {
ds.toggleSelected(prims);
}
} else if (shift) {
// add prims to an existing selection
ds.addSelected(prims);
} else {
// clear selection, then select the prims clicked
ds.setSelected(prims);
}
}
/**
* Returns the current select mode.
* @return the select mode
* @since 7543
*/
public final Mode getMode() {
return mode;
}
@Override
public String getModeHelpText() {
if (mouseDownButton == MouseEvent.BUTTON1 && mouseReleaseTime < mouseDownTime) {
if (mode == Mode.SELECT)
return tr("Release the mouse button to select the objects in the rectangle.");
else if (mode == Mode.MOVE && (System.currentTimeMillis() - mouseDownTime >= initialMoveDelay)) {
final DataSet ds = getLayerManager().getEditDataSet();
final boolean canMerge = ds != null && !ds.getSelectedNodes().isEmpty();
final String mergeHelp = canMerge ? (' ' + tr("Ctrl to merge with nearest node.")) : "";
return tr("Release the mouse button to stop moving.") + mergeHelp;
} else if (mode == Mode.ROTATE)
return tr("Release the mouse button to stop rotating.");
else if (mode == Mode.SCALE)
return tr("Release the mouse button to stop scaling.");
}
return tr("Move objects by dragging; Shift to add to selection (Ctrl to toggle); Shift-Ctrl to rotate selected; " +
"Alt-Ctrl to scale selected; or change selection");
}
@Override
public boolean layerIsSupported(Layer l) {
return l instanceof OsmDataLayer;
}
/**
* Enable or diable the lasso mode
* @param lassoMode true to enable the lasso mode, false otherwise
*/
public void setLassoMode(boolean lassoMode) {
this.selectionManager.setLassoMode(lassoMode);
this.lassoMode = lassoMode;
}
private final transient CycleManager cycleManager = new CycleManager();
private final transient VirtualManager virtualManager = new VirtualManager();
private class CycleManager {
private Collection<OsmPrimitive> cycleList = Collections.emptyList();
private boolean cyclePrims;
private OsmPrimitive cycleStart;
private boolean waitForMouseUpParameter;
private boolean multipleMatchesParameter;
/**
* read preferences
*/
private void init() {
waitForMouseUpParameter = Main.pref.getBoolean("mappaint.select.waits-for-mouse-up", false);
multipleMatchesParameter = Main.pref.getBoolean("selectaction.cycles.multiple.matches", false);
}
/**
* Determine primitive to be selected and build cycleList
* @param nearest primitive found by simple method
* @param p point where user clicked
* @return OsmPrimitive to be selected
*/
private OsmPrimitive cycleSetup(OsmPrimitive nearest, Point p) {
OsmPrimitive osm = null;
if (nearest != null) {
osm = nearest;
if (!(alt || multipleMatchesParameter)) {
// no real cycling, just one element in cycle list
cycleList = asColl(osm);
if (waitForMouseUpParameter) {
// prefer a selected nearest node or way, if possible
osm = mv.getNearestNodeOrWay(p, mv.isSelectablePredicate, true);
}
} else {
// Alt + left mouse button pressed: we need to build cycle list
cycleList = mv.getAllNearest(p, mv.isSelectablePredicate);
if (cycleList.size() > 1) {
cyclePrims = false;
// find first already selected element in cycle list
OsmPrimitive old = osm;
for (OsmPrimitive o : cycleList) {
if (o.isSelected()) {
cyclePrims = true;
osm = o;
break;
}
}
// special case: for cycle groups of 2, we can toggle to the
// true nearest primitive on mousePressed right away
if (cycleList.size() == 2 && !waitForMouseUpParameter) {
if (!(osm.equals(old) || osm.isNew() || ctrl)) {
cyclePrims = false;
osm = old;
} // else defer toggling to mouseRelease time in those cases:
/*
* osm == old -- the true nearest node is the
* selected one osm is a new node -- do not break
* unglue ways in ALT mode ctrl is pressed -- ctrl
* generally works on mouseReleased
*/
}
}
}
}
return osm;
}
/**
* Modifies current selection state and returns the next element in a
* selection cycle given by
* <code>cycleList</code> field
* @return the next element of cycle list
*/
private Collection<OsmPrimitive> cyclePrims() {
if (cycleList.size() <= 1) {
// no real cycling, just return one-element collection with nearest primitive in it
return cycleList;
}
// updateKeyModifiers() already called before!
DataSet ds = getLayerManager().getEditDataSet();
OsmPrimitive first = cycleList.iterator().next(), foundInDS = null;
OsmPrimitive nxt = first;
if (cyclePrims && shift) {
for (Iterator<OsmPrimitive> i = cycleList.iterator(); i.hasNext();) {
nxt = i.next();
if (!nxt.isSelected()) {
break; // take first primitive in cycleList not in sel
}
}
// if primitives 1,2,3 are under cursor, [Alt-press] [Shift-release] gives 1 -> 12 -> 123
} else {
for (Iterator<OsmPrimitive> i = cycleList.iterator(); i.hasNext();) {
nxt = i.next();
if (nxt.isSelected()) {
foundInDS = nxt;
// first selected primitive in cycleList is found
if (cyclePrims || ctrl) {
ds.clearSelection(foundInDS); // deselect it
nxt = i.hasNext() ? i.next() : first;
// return next one in cycle list (last->first)
}
break; // take next primitive in cycleList
}
}
}
// if "no-alt-cycling" is enabled, Ctrl-Click arrives here.
if (ctrl) {
// a member of cycleList was found in the current dataset selection
if (foundInDS != null) {
// mouse was moved to a different selection group w/ a previous sel
if (!cycleList.contains(cycleStart)) {
ds.clearSelection(cycleList);
cycleStart = foundInDS;
} else if (cycleStart.equals(nxt)) {
// loop detected, insert deselect step
ds.addSelected(nxt);
}
} else {
// setup for iterating a sel group again or a new, different one..
nxt = cycleList.contains(cycleStart) ? cycleStart : first;
cycleStart = nxt;
}
} else {
cycleStart = null;
}
// return one-element collection with one element to be selected (or added to selection)
return asColl(nxt);
}
}
private class VirtualManager {
private Node virtualNode;
private Collection<WaySegment> virtualWays = new LinkedList<>();
private int nodeVirtualSize;
private int virtualSnapDistSq2;
private int virtualSpace;
private void init() {
nodeVirtualSize = Main.pref.getInteger("mappaint.node.virtual-size", 8);
int virtualSnapDistSq = Main.pref.getInteger("mappaint.node.virtual-snap-distance", 8);
virtualSnapDistSq2 = virtualSnapDistSq*virtualSnapDistSq;
virtualSpace = Main.pref.getInteger("mappaint.node.virtual-space", 70);
}
/**
* Calculate a virtual node if there is enough visual space to draw a
* crosshair node and the middle of a way segment is clicked. If the
* user drags the crosshair node, it will be added to all ways in
* <code>virtualWays</code>.
*
* @param p the point clicked
* @return whether
* <code>virtualNode</code> and
* <code>virtualWays</code> were setup.
*/
private boolean activateVirtualNodeNearPoint(Point p) {
if (nodeVirtualSize > 0) {
Collection<WaySegment> selVirtualWays = new LinkedList<>();
Pair<Node, Node> vnp = null, wnp = new Pair<>(null, null);
for (WaySegment ws : mv.getNearestWaySegments(p, mv.isSelectablePredicate)) {
Way w = ws.way;
wnp.a = w.getNode(ws.lowerIndex);
wnp.b = w.getNode(ws.lowerIndex + 1);
MapViewPoint p1 = mv.getState().getPointFor(wnp.a);
MapViewPoint p2 = mv.getState().getPointFor(wnp.b);
if (WireframeMapRenderer.isLargeSegment(p1, p2, virtualSpace)) {
Point2D pc = new Point2D.Double((p1.getInViewX() + p2.getInViewX()) / 2, (p1.getInViewY() + p2.getInViewY()) / 2);
if (p.distanceSq(pc) < virtualSnapDistSq2) {
// Check that only segments on top of each other get added to the
// virtual ways list. Otherwise ways that coincidentally have their
// virtual node at the same spot will be joined which is likely unwanted
Pair.sort(wnp);
if (vnp == null) {
vnp = new Pair<>(wnp.a, wnp.b);
virtualNode = new Node(mv.getLatLon(pc.getX(), pc.getY()));
}
if (vnp.equals(wnp)) {
// if mutiple line segments have the same points,
// add all segments to be splitted to virtualWays list
// if some lines are selected, only their segments will go to virtualWays
(w.isSelected() ? selVirtualWays : virtualWays).add(ws);
}
}
}
}
if (!selVirtualWays.isEmpty()) {
virtualWays = selVirtualWays;
}
}
return !virtualWays.isEmpty();
}
private void createMiddleNodeFromVirtual(EastNorth currentEN) {
Collection<Command> virtualCmds = new LinkedList<>();
virtualCmds.add(new AddCommand(virtualNode));
for (WaySegment virtualWay : virtualWays) {
Way w = virtualWay.way;
Way wnew = new Way(w);
wnew.addNode(virtualWay.lowerIndex + 1, virtualNode);
virtualCmds.add(new ChangeCommand(w, wnew));
}
virtualCmds.add(new MoveCommand(virtualNode, startEN, currentEN));
String text = trn("Add and move a virtual new node to way",
"Add and move a virtual new node to {0} ways", virtualWays.size(),
virtualWays.size());
Main.main.undoRedo.add(new SequenceCommand(text, virtualCmds));
getLayerManager().getEditDataSet().setSelected(Collections.singleton((OsmPrimitive) virtualNode));
clear();
}
private void clear() {
virtualWays.clear();
virtualNode = null;
}
private boolean hasVirtualNode() {
return virtualNode != null;
}
private boolean hasVirtualWaysToBeConstructed() {
return !virtualWays.isEmpty();
}
}
/**
* Returns {@code o} as collection of {@code o}'s type.
* @param <T> object type
* @param o any object
* @return {@code o} as collection of {@code o}'s type.
*/
protected static <T> Collection<T> asColl(T o) {
return o == null ? Collections.emptySet() : Collections.singleton(o);
}
}