A cleanup class. It lets us have some objects examine themselves to see if they are able to be deleted, like when a Way has no nodes left.
--- core-dave/src/org/openstreetmap/josm/command/ConditionalDeleteCommand.java | 84 ++++++++++ 1 file changed, 84 insertions(+) diff -puN /dev/null src/org/openstreetmap/josm/command/ConditionalDeleteCommand.java --- /dev/null 2008-02-29 08:37:01.000000000 -0800 +++ core-dave/src/org/openstreetmap/josm/command/ConditionalDeleteCommand.java 2008-04-28 18:59:26.000000000 -0700 @@ -0,0 +1,84 @@ +// License: GPL. Copyright 2007 by Immanuel Scholz and others +package org.openstreetmap.josm.command; + +import static org.openstreetmap.josm.tools.I18n.tr; +import static org.openstreetmap.josm.tools.I18n.trn; + +import java.util.ArrayList; +import java.util.Collection; + +import javax.swing.JLabel; +import javax.swing.tree.DefaultMutableTreeNode; +import javax.swing.tree.MutableTreeNode; + +import org.openstreetmap.josm.data.osm.OsmPrimitive; +import org.openstreetmap.josm.data.osm.visitor.NameVisitor; +import org.openstreetmap.josm.tools.ImageProvider; + +/** + * A command to delete a primitive from the dataset, but only if it + * is "ready" to go, such as a Way with no nodes in it. + * + * @author daveh + */ +public class ConditionalDeleteCommand extends Command { + + /** + * The primitive that get deleted. + */ + private final Collection<? extends OsmPrimitive> data; + private final Collection<OsmPrimitive> deleted_data; + + public ConditionalDeleteCommand(Collection<? extends OsmPrimitive> data) { + this.data = data; + deleted_data = new ArrayList<OsmPrimitive>(); + } + + @Override public boolean executeCommand() { + super.executeCommand(); + for (OsmPrimitive osm : data) { + if (!osm.mayDelete()) + continue; + osm.delete(true); + deleted_data.add(osm); + } + return true; + } + + @Override public void undoCommand() { + super.executeCommand(); + for (OsmPrimitive osm : deleted_data) { + osm.delete(false); + } + deleted_data.clear(); + } + + @Override public MutableTreeNode description() { + NameVisitor v = new NameVisitor(); + + if (data.size() == 1) { + data.iterator().next().visit(v); + return new DefaultMutableTreeNode(new JLabel(tr("Conditional Delete")+" "+tr(v.className)+" "+v.name, v.icon, JLabel.HORIZONTAL)); + } + + String cname = null; + for (OsmPrimitive osm : data) { + osm.visit(v); + if (cname == null) + cname = v.className; + else if (!cname.equals(v.className)) + cname = "object"; + } + DefaultMutableTreeNode root = new DefaultMutableTreeNode(new JLabel( + tr("Delete")+" "+data.size()+" "+trn(cname, cname+"s", data.size()), ImageProvider.get("data", cname), JLabel.HORIZONTAL)); + for (OsmPrimitive osm : data) { + osm.visit(v); + root.add(new DefaultMutableTreeNode(v.toLabel())); + } + return root; + } + + @Override public void fillModifiedData(Collection<OsmPrimitive> modified, Collection<OsmPrimitive> deleted, Collection<OsmPrimitive> added) { + + } +} _ _______________________________________________ josm-dev mailing list josm-dev@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/josm-dev