[6380] | 1 | // License: GPL. For details, see LICENSE file.
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[626] | 2 | package org.openstreetmap.josm.actions.mapmode;
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| 3 |
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| 4 | import static org.openstreetmap.josm.tools.I18n.tr;
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| 5 |
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[2026] | 6 | import java.awt.Cursor;
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[626] | 7 | import java.awt.event.ActionEvent;
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| 8 | import java.awt.event.KeyEvent;
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| 9 | import java.awt.event.MouseEvent;
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[9472] | 10 | import java.util.Collection;
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[626] | 11 | import java.util.Collections;
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[4327] | 12 | import java.util.HashSet;
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[15126] | 13 | import java.util.List;
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[4327] | 14 | import java.util.Set;
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[15126] | 15 | import java.util.stream.Collectors;
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[626] | 16 |
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[988] | 17 | import org.openstreetmap.josm.command.Command;
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| 18 | import org.openstreetmap.josm.command.DeleteCommand;
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[14134] | 19 | import org.openstreetmap.josm.data.UndoRedoHandler;
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[4327] | 20 | import org.openstreetmap.josm.data.osm.DataSet;
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[2026] | 21 | import org.openstreetmap.josm.data.osm.Node;
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[3177] | 22 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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[1856] | 23 | import org.openstreetmap.josm.data.osm.Relation;
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[626] | 24 | import org.openstreetmap.josm.data.osm.WaySegment;
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[16558] | 25 | import org.openstreetmap.josm.gui.ExtendedDialog;
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[12630] | 26 | import org.openstreetmap.josm.gui.MainApplication;
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| 27 | import org.openstreetmap.josm.gui.MapFrame;
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| 28 | import org.openstreetmap.josm.gui.MapView;
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[1856] | 29 | import org.openstreetmap.josm.gui.dialogs.relation.RelationDialogManager;
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[1379] | 30 | import org.openstreetmap.josm.gui.layer.Layer;
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[10448] | 31 | import org.openstreetmap.josm.gui.layer.MainLayerManager;
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[1379] | 32 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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[6026] | 33 | import org.openstreetmap.josm.gui.util.HighlightHelper;
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[12517] | 34 | import org.openstreetmap.josm.gui.util.ModifierExListener;
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[12846] | 35 | import org.openstreetmap.josm.spi.preferences.Config;
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[2842] | 36 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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[988] | 37 | import org.openstreetmap.josm.tools.ImageProvider;
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[1084] | 38 | import org.openstreetmap.josm.tools.Shortcut;
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[626] | 39 |
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| 40 | /**
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[5275] | 41 | * A map mode that enables the user to delete nodes and other objects.
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[626] | 42 | *
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[1023] | 43 | * The user can click on an object, which gets deleted if possible. When Ctrl is
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[8470] | 44 | * pressed when releasing the button, the objects and all its references are deleted.
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[626] | 45 | *
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| 46 | * If the user did not press Ctrl and the object has any references, the user
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| 47 | * is informed and nothing is deleted.
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| 48 | *
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| 49 | * If the user enters the mapmode and any object is selected, all selected
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[5275] | 50 | * objects are deleted, if possible.
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[1023] | 51 | *
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[626] | 52 | * @author imi
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| 53 | */
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[12517] | 54 | public class DeleteAction extends MapMode implements ModifierExListener {
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[8470] | 55 | // Cache previous mouse event (needed when only the modifier keys are pressed but the mouse isn't moved)
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[8840] | 56 | private MouseEvent oldEvent;
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[2026] | 57 |
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[4327] | 58 | /**
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| 59 | * elements that have been highlighted in the previous iteration. Used
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| 60 | * to remove the highlight from them again as otherwise the whole data
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| 61 | * set would have to be checked.
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| 62 | */
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[8840] | 63 | private transient WaySegment oldHighlightedWaySegment;
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[4327] | 64 |
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[12537] | 65 | private static final HighlightHelper HIGHLIGHT_HELPER = new HighlightHelper();
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[4327] | 66 | private boolean drawTargetHighlight;
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| 67 |
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[11978] | 68 | enum DeleteMode {
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[7668] | 69 | none(/* ICON(cursor/modifier/) */ "delete"),
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| 70 | segment(/* ICON(cursor/modifier/) */ "delete_segment"),
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| 71 | node(/* ICON(cursor/modifier/) */ "delete_node"),
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| 72 | node_with_references(/* ICON(cursor/modifier/) */ "delete_node"),
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| 73 | way(/* ICON(cursor/modifier/) */ "delete_way_only"),
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| 74 | way_with_references(/* ICON(cursor/modifier/) */ "delete_way_normal"),
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| 75 | way_with_nodes(/* ICON(cursor/modifier/) */ "delete_way_node_only");
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[2026] | 76 |
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[16626] | 77 | @SuppressWarnings("ImmutableEnumChecker")
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[2521] | 78 | private final Cursor c;
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| 79 |
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[8674] | 80 | DeleteMode(String cursorName) {
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[2521] | 81 | c = ImageProvider.getCursor("normal", cursorName);
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| 82 | }
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| 83 |
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[11978] | 84 | /**
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| 85 | * Returns the mode cursor.
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| 86 | * @return the mode cursor
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| 87 | */
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[2026] | 88 | public Cursor cursor() {
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| 89 | return c;
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| 90 | }
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| 91 | }
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| 92 |
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[2521] | 93 | private static class DeleteParameters {
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[8285] | 94 | private DeleteMode mode;
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| 95 | private Node nearestNode;
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| 96 | private WaySegment nearestSegment;
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[2521] | 97 | }
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| 98 |
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[1169] | 99 | /**
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| 100 | * Construct a new DeleteAction. Mnemonic is the delete - key.
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[11713] | 101 | * @since 11713
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[1169] | 102 | */
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[11713] | 103 | public DeleteAction() {
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[1169] | 104 | super(tr("Delete Mode"),
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| 105 | "delete",
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| 106 | tr("Delete nodes or ways."),
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[8510] | 107 | Shortcut.registerShortcut("mapmode:delete", tr("Mode: {0}", tr("Delete")),
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[4982] | 108 | KeyEvent.VK_DELETE, Shortcut.CTRL),
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[1169] | 109 | ImageProvider.getCursor("normal", "delete"));
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| 110 | }
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[626] | 111 |
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[11713] | 112 | @Override
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| 113 | public void enterMode() {
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[1169] | 114 | super.enterMode();
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[1821] | 115 | if (!isEnabled())
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| 116 | return;
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[2026] | 117 |
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[12846] | 118 | drawTargetHighlight = Config.getPref().getBoolean("draw.target-highlight", true);
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[4327] | 119 |
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[12630] | 120 | MapFrame map = MainApplication.getMap();
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| 121 | map.mapView.addMouseListener(this);
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| 122 | map.mapView.addMouseMotionListener(this);
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[2026] | 123 | // This is required to update the cursors when ctrl/shift/alt is pressed
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[12630] | 124 | map.keyDetector.addModifierExListener(this);
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[1169] | 125 | }
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[626] | 126 |
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[6889] | 127 | @Override
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| 128 | public void exitMode() {
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[1169] | 129 | super.exitMode();
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[12630] | 130 | MapFrame map = MainApplication.getMap();
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| 131 | map.mapView.removeMouseListener(this);
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| 132 | map.mapView.removeMouseMotionListener(this);
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| 133 | map.keyDetector.removeModifierExListener(this);
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[4327] | 134 | removeHighlighting();
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[1169] | 135 | }
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[626] | 136 |
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[6889] | 137 | @Override
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| 138 | public void actionPerformed(ActionEvent e) {
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[1169] | 139 | super.actionPerformed(e);
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| 140 | doActionPerformed(e);
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| 141 | }
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[768] | 142 |
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[7434] | 143 | /**
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| 144 | * Invoked when the action occurs.
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| 145 | * @param e Action event
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| 146 | */
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[12504] | 147 | public void doActionPerformed(ActionEvent e) {
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[12636] | 148 | MainLayerManager lm = MainApplication.getLayerManager();
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[10467] | 149 | OsmDataLayer editLayer = lm.getEditLayer();
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| 150 | if (editLayer == null) {
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[1169] | 151 | return;
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[10467] | 152 | }
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| 153 |
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[12526] | 154 | updateKeyModifiers(e);
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[626] | 155 |
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[1169] | 156 | Command c;
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| 157 | if (ctrl) {
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[12718] | 158 | c = DeleteCommand.deleteWithReferences(lm.getEditDataSet().getSelected());
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[1169] | 159 | } else {
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[12718] | 160 | c = DeleteCommand.delete(lm.getEditDataSet().getSelected(), !alt /* also delete nodes in way */);
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[1169] | 161 | }
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[5076] | 162 | // if c is null, an error occurred or the user aborted. Don't do anything in that case.
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[1169] | 163 | if (c != null) {
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[14134] | 164 | UndoRedoHandler.getInstance().add(c);
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[16558] | 165 | if (changesHiddenWay(c)) {
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| 166 | final ConfirmDeleteDialog ed = new ConfirmDeleteDialog();
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| 167 | ed.setContent(tr("Are you sure that you want to delete elements with attached ways that are hidden by filters?"));
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| 168 | ed.toggleEnable("deletedHiddenElements");
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| 169 | if (ed.showDialog().getValue() != 1) {
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| 170 | UndoRedoHandler.getInstance().undo(1);
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| 171 | return;
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| 172 | }
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| 173 | }
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| 174 |
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[10467] | 175 | //FIXME: This should not be required, DeleteCommand should update the selection, otherwise undo/redo won't work.
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[10448] | 176 | lm.getEditDataSet().setSelected();
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[1169] | 177 | }
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| 178 | }
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[626] | 179 |
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[7434] | 180 | @Override
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| 181 | public void mouseDragged(MouseEvent e) {
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[2692] | 182 | mouseMoved(e);
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| 183 | }
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| 184 |
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[1169] | 185 | /**
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[2026] | 186 | * Listen to mouse move to be able to update the cursor (and highlights)
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[5275] | 187 | * @param e The mouse event that has been captured
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[2026] | 188 | */
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[7434] | 189 | @Override
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| 190 | public void mouseMoved(MouseEvent e) {
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[2026] | 191 | oldEvent = e;
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[4327] | 192 | giveUserFeedback(e);
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[2026] | 193 | }
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| 194 |
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| 195 | /**
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[4327] | 196 | * removes any highlighting that may have been set beforehand.
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| 197 | */
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[10448] | 198 | private void removeHighlighting() {
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[12537] | 199 | HIGHLIGHT_HELPER.clear();
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[10448] | 200 | DataSet ds = getLayerManager().getEditDataSet();
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[8510] | 201 | if (ds != null) {
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[4327] | 202 | ds.clearHighlightedWaySegments();
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| 203 | }
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| 204 | }
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| 205 |
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| 206 | /**
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| 207 | * handles everything related to highlighting primitives and way
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[8470] | 208 | * segments for the given pointer position (via MouseEvent) and modifiers.
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| 209 | * @param e current mouse event
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[12517] | 210 | * @param modifiers extended mouse modifiers, not necessarly taken from the given mouse event
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[4327] | 211 | */
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| 212 | private void addHighlighting(MouseEvent e, int modifiers) {
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[8510] | 213 | if (!drawTargetHighlight)
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[4327] | 214 | return;
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| 215 |
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| 216 | DeleteParameters parameters = getDeleteParameters(e, modifiers);
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| 217 |
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[8510] | 218 | if (parameters.mode == DeleteMode.segment) {
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[4327] | 219 | // deleting segments is the only action not working on OsmPrimitives
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| 220 | // so we have to handle them separately.
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[15152] | 221 | repaintIfRequired(Collections.emptySet(), parameters.nearestSegment);
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[4327] | 222 | } else {
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| 223 | // don't call buildDeleteCommands for DeleteMode.segment because it doesn't support
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| 224 | // silent operation and SplitWayAction will show dialogs. A lot.
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| 225 | Command delCmd = buildDeleteCommands(e, modifiers, true);
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[15152] | 226 | // all other cases delete OsmPrimitives directly, so we can safely do the following
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| 227 | repaintIfRequired(delCmd == null ? Collections.emptySet() : new HashSet<>(delCmd.getParticipatingPrimitives()), null);
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[5102] | 228 | }
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| 229 | }
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[4327] | 230 |
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[5102] | 231 | private void repaintIfRequired(Set<OsmPrimitive> newHighlights, WaySegment newHighlightedWaySegment) {
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| 232 | boolean needsRepaint = false;
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[10467] | 233 | OsmDataLayer editLayer = getLayerManager().getEditLayer();
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[5102] | 234 |
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[8510] | 235 | if (newHighlightedWaySegment == null && oldHighlightedWaySegment != null) {
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[10467] | 236 | if (editLayer != null) {
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| 237 | editLayer.data.clearHighlightedWaySegments();
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[5102] | 238 | needsRepaint = true;
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[4327] | 239 | }
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[5102] | 240 | oldHighlightedWaySegment = null;
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[8510] | 241 | } else if (newHighlightedWaySegment != null && !newHighlightedWaySegment.equals(oldHighlightedWaySegment)) {
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[10467] | 242 | if (editLayer != null) {
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| 243 | editLayer.data.setHighlightedWaySegments(Collections.singleton(newHighlightedWaySegment));
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[5102] | 244 | needsRepaint = true;
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| 245 | }
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| 246 | oldHighlightedWaySegment = newHighlightedWaySegment;
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[4327] | 247 | }
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[12537] | 248 | needsRepaint |= HIGHLIGHT_HELPER.highlightOnly(newHighlights);
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[10467] | 249 | if (needsRepaint && editLayer != null) {
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| 250 | editLayer.invalidate();
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[5101] | 251 | }
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| 252 | }
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| 253 |
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[4327] | 254 | /**
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[8470] | 255 | * This function handles all work related to updating the cursor and highlights
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[2512] | 256 | *
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[8470] | 257 | * @param e current mouse event
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[12517] | 258 | * @param modifiers extended mouse modifiers, not necessarly taken from the given mouse event
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[2026] | 259 | */
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| 260 | private void updateCursor(MouseEvent e, int modifiers) {
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[12630] | 261 | if (!MainApplication.isDisplayingMapView())
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[2343] | 262 | return;
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[12630] | 263 | MapFrame map = MainApplication.getMap();
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| 264 | if (!map.mapView.isActiveLayerVisible() || e == null)
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[2026] | 265 | return;
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| 266 |
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[2521] | 267 | DeleteParameters parameters = getDeleteParameters(e, modifiers);
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[12630] | 268 | map.mapView.setNewCursor(parameters.mode.cursor(), this);
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[2026] | 269 | }
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[7434] | 270 |
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[4327] | 271 | /**
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| 272 | * Gives the user feedback for the action he/she is about to do. Currently
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| 273 | * calls the cursor and target highlighting routines. Allows for modifiers
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| 274 | * not taken from the given mouse event.
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[6069] | 275 | *
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[4327] | 276 | * Normally the mouse event also contains the modifiers. However, when the
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| 277 | * mouse is not moved and only modifier keys are pressed, no mouse event
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| 278 | * occurs. We can use AWTEvent to catch those but still lack a proper
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[8470] | 279 | * mouseevent. Instead we copy the previous event and only update the modifiers.
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[9230] | 280 | * @param e mouse event
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| 281 | * @param modifiers mouse modifiers
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[4327] | 282 | */
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| 283 | private void giveUserFeedback(MouseEvent e, int modifiers) {
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| 284 | updateCursor(e, modifiers);
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| 285 | addHighlighting(e, modifiers);
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| 286 | }
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[2026] | 287 |
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| 288 | /**
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[4327] | 289 | * Gives the user feedback for the action he/she is about to do. Currently
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| 290 | * calls the cursor and target highlighting routines. Extracts modifiers
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| 291 | * from mouse event.
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[9230] | 292 | * @param e mouse event
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[4327] | 293 | */
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| 294 | private void giveUserFeedback(MouseEvent e) {
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[12517] | 295 | giveUserFeedback(e, e.getModifiersEx());
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[4327] | 296 | }
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| 297 |
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| 298 | /**
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[1169] | 299 | * If user clicked with the left button, delete the nearest object.
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| 300 | */
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[7434] | 301 | @Override
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| 302 | public void mouseReleased(MouseEvent e) {
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[1169] | 303 | if (e.getButton() != MouseEvent.BUTTON1)
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| 304 | return;
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[12630] | 305 | MapFrame map = MainApplication.getMap();
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| 306 | if (!map.mapView.isActiveLayerVisible())
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[1169] | 307 | return;
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[1935] | 308 |
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| 309 | // request focus in order to enable the expected keyboard shortcuts
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| 310 | //
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[12630] | 311 | map.mapView.requestFocus();
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[1935] | 312 |
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[12526] | 313 | Command c = buildDeleteCommands(e, e.getModifiersEx(), false);
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[1169] | 314 | if (c != null) {
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[14134] | 315 | UndoRedoHandler.getInstance().add(c);
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[1169] | 316 | }
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[626] | 317 |
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[10382] | 318 | getLayerManager().getEditDataSet().setSelected();
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[4327] | 319 | giveUserFeedback(e);
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[1169] | 320 | }
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[1023] | 321 |
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[7434] | 322 | @Override
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| 323 | public String getModeHelpText() {
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[8540] | 324 | // CHECKSTYLE.OFF: LineLength
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[2842] | 325 | return tr("Click to delete. Shift: delete way segment. Alt: do not delete unused nodes when deleting a way. Ctrl: delete referring objects.");
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[8540] | 326 | // CHECKSTYLE.ON: LineLength
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[1169] | 327 | }
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[1677] | 328 |
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[7434] | 329 | @Override
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| 330 | public boolean layerIsSupported(Layer l) {
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[13434] | 331 | return isEditableDataLayer(l);
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[1379] | 332 | }
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[1821] | 333 |
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| 334 | @Override
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| 335 | protected void updateEnabledState() {
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[12630] | 336 | setEnabled(MainApplication.isDisplayingMapView() && MainApplication.getMap().mapView.isActiveLayerDrawable());
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[1821] | 337 | }
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[1856] | 338 |
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| 339 | /**
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[5275] | 340 | * Deletes the relation in the context of the given layer.
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[2512] | 341 | *
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[1856] | 342 | * @param layer the layer in whose context the relation is deleted. Must not be null.
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[9472] | 343 | * @param toDelete the relation to be deleted. Must not be null.
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[8291] | 344 | * @throws IllegalArgumentException if layer is null
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[9472] | 345 | * @throws IllegalArgumentException if toDelete is null
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[1856] | 346 | */
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| 347 | public static void deleteRelation(OsmDataLayer layer, Relation toDelete) {
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[9472] | 348 | deleteRelations(layer, Collections.singleton(toDelete));
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| 349 | }
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| 350 |
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| 351 | /**
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| 352 | * Deletes the relations in the context of the given layer.
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| 353 | *
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| 354 | * @param layer the layer in whose context the relations are deleted. Must not be null.
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[9496] | 355 | * @param toDelete the relations to be deleted. Must not be null.
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[9472] | 356 | * @throws IllegalArgumentException if layer is null
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| 357 | * @throws IllegalArgumentException if toDelete is null
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| 358 | */
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| 359 | public static void deleteRelations(OsmDataLayer layer, Collection<Relation> toDelete) {
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[2842] | 360 | CheckParameterUtil.ensureParameterNotNull(layer, "layer");
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| 361 | CheckParameterUtil.ensureParameterNotNull(toDelete, "toDelete");
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[2026] | 362 |
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[12718] | 363 | final Command cmd = DeleteCommand.delete(toDelete);
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[1856] | 364 | if (cmd != null) {
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| 365 | // cmd can be null if the user cancels dialogs DialogCommand displays
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[15126] | 366 | List<Relation> toUnselect = toDelete.stream().filter(Relation::isSelected).collect(Collectors.toList());
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[14134] | 367 | UndoRedoHandler.getInstance().add(cmd);
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[15126] | 368 | toDelete.forEach(relation -> RelationDialogManager.getRelationDialogManager().close(layer, relation));
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| 369 | toUnselect.forEach(layer.data::toggleSelected);
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[1856] | 370 | }
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| 371 | }
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[2026] | 372 |
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[2521] | 373 | private DeleteParameters getDeleteParameters(MouseEvent e, int modifiers) {
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[12517] | 374 | updateKeyModifiersEx(modifiers);
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[2026] | 375 |
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[2521] | 376 | DeleteParameters result = new DeleteParameters();
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| 377 |
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[12630] | 378 | MapView mapView = MainApplication.getMap().mapView;
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| 379 | result.nearestNode = mapView.getNearestNode(e.getPoint(), OsmPrimitive::isSelectable);
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[2521] | 380 | if (result.nearestNode == null) {
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[12630] | 381 | result.nearestSegment = mapView.getNearestWaySegment(e.getPoint(), OsmPrimitive::isSelectable);
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[2521] | 382 | if (result.nearestSegment != null) {
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[2026] | 383 | if (shift) {
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[2521] | 384 | result.mode = DeleteMode.segment;
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[2026] | 385 | } else if (ctrl) {
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[2521] | 386 | result.mode = DeleteMode.way_with_references;
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[2026] | 387 | } else {
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[8510] | 388 | result.mode = alt ? DeleteMode.way : DeleteMode.way_with_nodes;
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[2026] | 389 | }
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[2521] | 390 | } else {
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| 391 | result.mode = DeleteMode.none;
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[2026] | 392 | }
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| 393 | } else if (ctrl) {
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[2521] | 394 | result.mode = DeleteMode.node_with_references;
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[2026] | 395 | } else {
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[2521] | 396 | result.mode = DeleteMode.node;
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[2026] | 397 | }
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| 398 |
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[2521] | 399 | return result;
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[2026] | 400 | }
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| 401 |
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| 402 | /**
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[2521] | 403 | * This function takes any mouse event argument and builds the list of elements
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| 404 | * that should be deleted but does not actually delete them.
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| 405 | * @param e MouseEvent from which modifiers and position are taken
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[5909] | 406 | * @param modifiers For explanation, see {@link #updateCursor}
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[8470] | 407 | * @param silent Set to true if the user should not be bugged with additional dialogs
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[5909] | 408 | * @return delete command
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[2521] | 409 | */
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| 410 | private Command buildDeleteCommands(MouseEvent e, int modifiers, boolean silent) {
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| 411 | DeleteParameters parameters = getDeleteParameters(e, modifiers);
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| 412 | switch (parameters.mode) {
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| 413 | case node:
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[12718] | 414 | return DeleteCommand.delete(Collections.singleton(parameters.nearestNode), false, silent);
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[2521] | 415 | case node_with_references:
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[12718] | 416 | return DeleteCommand.deleteWithReferences(Collections.singleton(parameters.nearestNode), silent);
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[2521] | 417 | case segment:
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[12718] | 418 | return DeleteCommand.deleteWaySegment(parameters.nearestSegment);
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[2521] | 419 | case way:
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[12718] | 420 | return DeleteCommand.delete(Collections.singleton(parameters.nearestSegment.way), false, silent);
|
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[2521] | 421 | case way_with_nodes:
|
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[12718] | 422 | return DeleteCommand.delete(Collections.singleton(parameters.nearestSegment.way), true, silent);
|
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[2521] | 423 | case way_with_references:
|
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[12718] | 424 | return DeleteCommand.deleteWithReferences(Collections.singleton(parameters.nearestSegment.way), true);
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[2521] | 425 | default:
|
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| 426 | return null;
|
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| 427 | }
|
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| 428 | }
|
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| 429 |
|
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| 430 | /**
|
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[2026] | 431 | * This is required to update the cursors when ctrl/shift/alt is pressed
|
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| 432 | */
|
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[6084] | 433 | @Override
|
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[12517] | 434 | public void modifiersExChanged(int modifiers) {
|
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[7434] | 435 | if (oldEvent == null)
|
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[4327] | 436 | return;
|
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[7434] | 437 | // We don't have a mouse event, so we pass the old mouse event but the new modifiers.
|
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[7217] | 438 | giveUserFeedback(oldEvent, modifiers);
|
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[2026] | 439 | }
|
---|
[16558] | 440 |
|
---|
| 441 | private boolean changesHiddenWay(Command c) {
|
---|
| 442 | return c.getParticipatingPrimitives().stream().anyMatch(OsmPrimitive::isDisabledAndHidden);
|
---|
| 443 | }
|
---|
| 444 |
|
---|
| 445 | static class ConfirmDeleteDialog extends ExtendedDialog {
|
---|
| 446 | ConfirmDeleteDialog() {
|
---|
| 447 | super(MainApplication.getMainFrame(),
|
---|
| 448 | tr("Delete elements"),
|
---|
| 449 | tr("Delete them"), tr("Undo delete"));
|
---|
| 450 | setButtonIcons("dialogs/delete", "cancel");
|
---|
| 451 | setCancelButton(2);
|
---|
| 452 | }
|
---|
| 453 | }
|
---|
| 454 |
|
---|
[626] | 455 | }
|
---|