// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.command;
import static org.openstreetmap.josm.tools.I18n.trn;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Objects;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.osm.OsmPrimitive;
/**
* Command that selects OSM primitives
*
* @author Landwirt
*/
public class SelectCommand extends Command {
/** the primitives to select when executing the command */
private final Collection<OsmPrimitive> newSelection;
/** the selection before applying the new selection */
private Collection<OsmPrimitive> oldSelection;
/**
* Constructs a new select command.
* @param newSelection the primitives to select when executing the command.
*/
public SelectCommand(Collection<OsmPrimitive> newSelection) {
if (newSelection == null || newSelection.isEmpty()) {
this.newSelection = Collections.emptySet();
} else {
this.newSelection = new HashSet<>(newSelection);
}
}
@Override
public void fillModifiedData(Collection<OsmPrimitive> modified, Collection<OsmPrimitive> deleted, Collection<OsmPrimitive> added) {
// Do nothing
}
@Override
public void undoCommand() {
Main.getLayerManager().getEditLayer().data.setSelected(oldSelection);
}
@Override
public boolean executeCommand() {
oldSelection = Main.getLayerManager().getEditLayer().data.getSelected();
Main.getLayerManager().getEditLayer().data.setSelected(newSelection);
return true;
}
@Override
public String getDescriptionText() {
int size = newSelection != null ? newSelection.size() : 0;
return trn("Selected {0} object", "Selected {0} objects", size, size);
}
@Override
public int hashCode() {
return Objects.hash(super.hashCode(), newSelection, oldSelection);
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null || getClass() != obj.getClass()) return false;
if (!super.equals(obj)) return false;
SelectCommand that = (SelectCommand) obj;
return Objects.equals(newSelection, that.newSelection) &&
Objects.equals(oldSelection, that.oldSelection);
}
}