Add dialog for when someone tries to add too many objects

Signed-off-by: Taylor Smock <taylor.smock@kaart.com>

src/main/java/org/openstreetmap/josm/plugins/mapwithai/backend/MapWithAIMoveAction.java

@@ -8,12 +8,15 @@ import java.util.Collection;
 import java.util.List;
 import java.util.stream.Collectors;
 
+import javax.swing.JOptionPane;
+
 import org.openstreetmap.josm.actions.JosmAction;
 import org.openstreetmap.josm.data.UndoRedoHandler;
 import org.openstreetmap.josm.data.osm.DataSet;
 import org.openstreetmap.josm.data.osm.Node;
 import org.openstreetmap.josm.data.osm.OsmPrimitive;
 import org.openstreetmap.josm.gui.MainApplication;
+import org.openstreetmap.josm.gui.Notification;
 import org.openstreetmap.josm.gui.layer.Layer;
 import org.openstreetmap.josm.gui.layer.OsmDataLayer;
 import org.openstreetmap.josm.plugins.mapwithai.MapWithAIPlugin;
@@ -44,6 +47,9 @@ public class MapWithAIMoveAction extends JosmAction {
                     .collect(Collectors.toList());
             ds.clearSelection(nodes);
             nodes.stream().map(Node::getReferrers).forEach(ds::addSelected);
+            if (ds.getSelected().size() > maxAddition) {
+                createMaxAddedDialog(maxAddition, ds.getSelected().size());
+            }
             final Collection<OsmPrimitive> selected = maxAddition > 0
                     ? ds.getSelected().stream().limit(maxAddition).collect(Collectors.toList())
                             : ds.getSelected();
@@ -64,6 +70,20 @@ public class MapWithAIMoveAction extends JosmAction {
         }
     }
 
+    private void createMaxAddedDialog(int maxAddition, int triedToAdd) {
+        final Notification notification = new Notification();
+        final StringBuilder message = new StringBuilder();
+        message.append(MapWithAIPlugin.NAME);
+        message.append(": ");
+        message.append(tr("maximum additions per action are ")).append(maxAddition).append(", ");
+        message.append(tr("tried to add ")).append(triedToAdd).append(".");
+        notification.setContent(message.toString());
+        notification.setDuration(Notification.TIME_LONG);
+        notification.setIcon(JOptionPane.INFORMATION_MESSAGE);
+        notification.show();
+
+    }
+
     @Override
     protected void updateEnabledState() {
         setEnabled(checkIfActionEnabled());