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) {
+
+ }
+}
_
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