Changeset 13611 in josm for trunk/src/org/openstreetmap/josm/data/osm

Timestamp:

2018-04-10T19:02:58+02:00 (6 years ago)

Author:

Don-vip

Message:

fix #16176 - NPE

File:

• trunk/src/org/openstreetmap/josm/data/osm/OsmUtils.java (modified) (2 diffs)

trunk/src/org/openstreetmap/josm/data/osm/OsmUtils.java

@@ -3 +3 @@
 
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.HashSet;
 import java.util.Locale;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Set;
 
@@ -153 +155 @@
         return layer1;
     }
+
+    /**
+     * Determines if the given collection contains primitives, and that none of them belong to a locked layer.
+     * @param collection collection of OSM primitives
+     * @return {@code true} if the given collection is not empty and does not contain any primitive in a locked layer.
+     * @since 13611
+     */
+    public static boolean isOsmCollectionEditable(Collection<? extends OsmPrimitive> collection) {
+        return collection != null && !collection.isEmpty()
+            && collection.stream().map(OsmPrimitive::getDataSet).filter(Objects::nonNull).noneMatch(DataSet::isLocked);
+    }
 }