Last change
on this file since 11885 was 11590, checked in by Don-vip, 7 years ago |
see #11924 - remove workarounds for jdk9 compilation problems with diamond operator - sounds a lot like JDK-8075793 (solved in b150)
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File size:
1.4 KB
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1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.actions.relation;
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3 |
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4 | import java.util.Collection;
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5 | import java.util.Collections;
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6 |
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7 | import javax.swing.AbstractAction;
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8 |
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9 | import org.openstreetmap.josm.actions.OsmPrimitiveAction;
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10 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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11 | import org.openstreetmap.josm.data.osm.Relation;
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12 | import org.openstreetmap.josm.tools.SubclassFilteredCollection;
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13 |
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14 | /**
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15 | * Ancestor for all actions that want to work with relation collection and
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16 | * to be disabled if the collection is empty
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17 | * @since 5793
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18 | */
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19 | public abstract class AbstractRelationAction extends AbstractAction implements OsmPrimitiveAction {
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20 | protected transient Collection<Relation> relations = Collections.<Relation>emptySet();
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21 |
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22 | @SuppressWarnings("unused")
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23 | protected static final Collection<Relation> getRelations(Collection<? extends OsmPrimitive> primitives) {
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24 | if (primitives == null || primitives.isEmpty()) {
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25 | return Collections.<Relation>emptySet();
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26 | } else {
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27 | return new SubclassFilteredCollection<>(primitives, Relation.class::isInstance);
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28 | }
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29 | }
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30 |
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31 | @Override
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32 | public void setPrimitives(Collection<? extends OsmPrimitive> primitives) {
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33 | this.relations = getRelations(primitives);
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34 | updateEnabledState();
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35 | }
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36 |
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37 | protected void updateEnabledState() {
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38 | setEnabled(!relations.isEmpty());
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39 | }
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40 | }
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