001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.command.conflict;
003
004import static org.openstreetmap.josm.tools.I18n.tr;
005
006import java.util.Collection;
007import java.util.Objects;
008
009import javax.swing.Icon;
010import javax.swing.JOptionPane;
011
012import org.openstreetmap.josm.Main;
013import org.openstreetmap.josm.command.Command;
014import org.openstreetmap.josm.data.conflict.Conflict;
015import org.openstreetmap.josm.data.osm.OsmPrimitive;
016import org.openstreetmap.josm.gui.DefaultNameFormatter;
017import org.openstreetmap.josm.gui.layer.OsmDataLayer;
018import org.openstreetmap.josm.tools.ImageProvider;
019
020/**
021 * Command used to add a new conflict.
022 * @since 1857
023 */
024public class ConflictAddCommand extends Command {
025    private final Conflict<? extends OsmPrimitive> conflict;
026
027    /**
028     * Constructs a new {@code ConflictAddCommand}.
029     * @param layer the data layer. Must not be null.
030     * @param conflict the conflict to add
031     */
032    public ConflictAddCommand(OsmDataLayer layer, Conflict<? extends OsmPrimitive> conflict) {
033        super(layer);
034        this.conflict = conflict;
035    }
036
037    protected void warnBecauseOfDoubleConflict() {
038        JOptionPane.showMessageDialog(
039                Main.parent,
040                tr("<html>Layer ''{0}'' already has a conflict for object<br>"
041                        + "''{1}''.<br>"
042                        + "This conflict cannot be added.</html>",
043                        getLayer().getName(),
044                        conflict.getMy().getDisplayName(DefaultNameFormatter.getInstance())
045                ),
046                tr("Double conflict"),
047                JOptionPane.ERROR_MESSAGE
048        );
049    }
050
051    @Override
052    public boolean executeCommand() {
053        try {
054            getLayer().getConflicts().add(conflict);
055        } catch (IllegalStateException e) {
056            Main.error(e);
057            warnBecauseOfDoubleConflict();
058        }
059        return true;
060    }
061
062    @Override
063    public void undoCommand() {
064        if (Main.isDisplayingMapView() && !Main.getLayerManager().containsLayer(getLayer())) {
065            Main.warn(tr("Layer ''{0}'' does not exist any more. Cannot remove conflict for object ''{1}''.",
066                    getLayer().getName(),
067                    conflict.getMy().getDisplayName(DefaultNameFormatter.getInstance())
068            ));
069            return;
070        }
071        getLayer().getConflicts().remove(conflict);
072    }
073
074    @Override
075    public void fillModifiedData(Collection<OsmPrimitive> modified, Collection<OsmPrimitive> deleted, Collection<OsmPrimitive> added) {
076        // nothing to fill
077    }
078
079    @Override
080    public String getDescriptionText() {
081        return tr("Add conflict for ''{0}''",
082                conflict.getMy().getDisplayName(DefaultNameFormatter.getInstance()));
083    }
084
085    @Override
086    public Icon getDescriptionIcon() {
087        return ImageProvider.get(conflict.getMy().getDisplayType());
088    }
089
090    @Override
091    public int hashCode() {
092        return Objects.hash(super.hashCode(), conflict);
093    }
094
095    @Override
096    public boolean equals(Object obj) {
097        if (this == obj) return true;
098        if (obj == null || getClass() != obj.getClass()) return false;
099        if (!super.equals(obj)) return false;
100        ConflictAddCommand that = (ConflictAddCommand) obj;
101        return Objects.equals(conflict, that.conflict);
102    }
103}