source: josm/trunk/src/org/openstreetmap/josm/actions/relation/ExportRelationToGpxAction.java

Last change on this file was 18211, checked in by Don-vip, 4 years ago

global use of !Utils.isEmpty/isBlank
  • Property svn:eol-style set to native
File size: 8.9 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.actions.relation;
3
4import static org.openstreetmap.josm.actions.relation.ExportRelationToGpxAction.Mode.FROM_FIRST_MEMBER;
5import static org.openstreetmap.josm.actions.relation.ExportRelationToGpxAction.Mode.TO_FILE;
6import static org.openstreetmap.josm.actions.relation.ExportRelationToGpxAction.Mode.TO_LAYER;
7import static org.openstreetmap.josm.gui.help.HelpUtil.ht;
8import static org.openstreetmap.josm.tools.I18n.tr;
9
10import java.awt.event.ActionEvent;
11import java.util.ArrayList;
12import java.util.Arrays;
13import java.util.Collection;
14import java.util.Collections;
15import java.util.EnumSet;
16import java.util.HashMap;
17import java.util.Iterator;
18import java.util.LinkedList;
19import java.util.List;
20import java.util.Map;
21import java.util.Set;
22import java.util.Stack;
23import java.util.concurrent.TimeUnit;
24
25import org.openstreetmap.josm.actions.GpxExportAction;
26import org.openstreetmap.josm.actions.IPrimitiveAction;
27import org.openstreetmap.josm.data.gpx.GpxData;
28import org.openstreetmap.josm.data.gpx.GpxTrack;
29import org.openstreetmap.josm.data.gpx.WayPoint;
30import org.openstreetmap.josm.data.osm.IPrimitive;
31import org.openstreetmap.josm.data.osm.Node;
32import org.openstreetmap.josm.data.osm.Relation;
33import org.openstreetmap.josm.data.osm.RelationMember;
34import org.openstreetmap.josm.gui.MainApplication;
35import org.openstreetmap.josm.gui.dialogs.relation.sort.WayConnectionType;
36import org.openstreetmap.josm.gui.dialogs.relation.sort.WayConnectionTypeCalculator;
37import org.openstreetmap.josm.gui.layer.GpxLayer;
38import org.openstreetmap.josm.gui.layer.Layer;
39import org.openstreetmap.josm.gui.layer.OsmDataLayer;
40import org.openstreetmap.josm.tools.SubclassFilteredCollection;
41import org.openstreetmap.josm.tools.Utils;
42
43/**
44 * Exports the current relation to a single GPX track,
45 * currently for type=route and type=superroute relations only.
46 *
47 * @since 13210
48 */
49public class ExportRelationToGpxAction extends GpxExportAction
50 implements IPrimitiveAction {
51
52 /** Enumeration of export variants */
53 public enum Mode {
54 /** concatenate members from first to last element */
55 FROM_FIRST_MEMBER,
56 /** concatenate members from last to first element */
57 FROM_LAST_MEMBER,
58 /** export to GPX layer and add to LayerManager */
59 TO_LAYER,
60 /** export to GPX file and open FileChooser */
61 TO_FILE
62 }
63
64 /** Mode of this ExportToGpxAction */
65 protected final Set<Mode> mode;
66
67 /** Primitives this action works on */
68 protected Collection<Relation> relations = Collections.<Relation>emptySet();
69
70 /** Construct a new ExportRelationToGpxAction with default mode */
71 public ExportRelationToGpxAction() {
72 this(EnumSet.of(FROM_FIRST_MEMBER, TO_FILE));
73 }
74
75 /**
76 * Constructs a new {@code ExportRelationToGpxAction}
77 *
78 * @param mode which mode to use, see {@code ExportRelationToGpxAction.Mode}
79 */
80 public ExportRelationToGpxAction(Set<Mode> mode) {
81 super(name(mode), mode.contains(TO_FILE) ? "exportgpx" : "dialogs/layerlist", tooltip(mode),
82 null, false, null, false);
83 setHelpId(ht("/Action/ExportRelationToGpx"));
84 this.mode = mode;
85 }
86
87 private static String name(Set<Mode> mode) {
88 if (mode.contains(TO_FILE)) {
89 if (mode.contains(FROM_FIRST_MEMBER)) {
90 return tr("Export GPX file starting from first member");
91 } else {
92 return tr("Export GPX file starting from last member");
93 }
94 } else {
95 if (mode.contains(FROM_FIRST_MEMBER)) {
96 return tr("Convert to GPX layer starting from first member");
97 } else {
98 return tr("Convert to GPX layer starting from last member");
99 }
100 }
101 }
102
103 private static String tooltip(Set<Mode> mode) {
104 if (mode.contains(FROM_FIRST_MEMBER)) {
105 return tr("Flatten this relation to a single gpx track recursively, " +
106 "starting with the first member, successively continuing to the last.");
107 } else {
108 return tr("Flatten this relation to a single gpx track recursively, " +
109 "starting with the last member, successively continuing to the first.");
110 }
111 }
112
113 @Override
114 protected Layer getLayer() {
115 List<RelationMember> flat = new ArrayList<>();
116
117 List<RelationMember> init = new ArrayList<>();
118 relations.forEach(t -> init.add(new RelationMember("", t)));
119
120 Stack<Iterator<RelationMember>> stack = new Stack<>();
121 stack.push(modeAwareIterator(init));
122
123 List<Relation> relsFound = new ArrayList<>();
124 do {
125 Iterator<RelationMember> i = stack.peek();
126 if (!i.hasNext())
127 stack.pop();
128 while (i.hasNext()) {
129 RelationMember m = i.next();
130 if (m.isRelation() && !m.getRelation().isIncomplete()) {
131 final List<RelationMember> members = m.getRelation().getMembers();
132 stack.push(modeAwareIterator(members));
133 relsFound.add(m.getRelation());
134 break;
135 }
136 if (m.isWay()) {
137 flat.add(m);
138 }
139 }
140 } while (!stack.isEmpty());
141
142 GpxData gpxData = new GpxData();
143 final String layerName;
144 long time = TimeUnit.MILLISECONDS.toSeconds(System.currentTimeMillis()) - 24*3600;
145
146 if (!flat.isEmpty()) {
147 Map<String, Object> trkAttr = new HashMap<>();
148 Collection<Collection<WayPoint>> trk = new ArrayList<>();
149 List<WayPoint> trkseg = new ArrayList<>();
150 trk.add(trkseg);
151
152 List<WayConnectionType> wct = new WayConnectionTypeCalculator().updateLinks(flat);
153 final HashMap<String, Integer> names = new HashMap<>();
154 for (int i = 0; i < flat.size(); i++) {
155 WayConnectionType wayConnectionType = wct.get(i);
156 if (!wayConnectionType.isOnewayLoopBackwardPart && !wayConnectionType.direction.isRoundabout()) {
157 if (!wayConnectionType.linkPrev && !trkseg.isEmpty()) {
158 gpxData.addTrack(new GpxTrack(trk, trkAttr));
159 trkAttr.clear();
160 trk.clear();
161 trkseg.clear();
162 trk.add(trkseg);
163 }
164 if (trkAttr.isEmpty()) {
165 flat.get(i).getWay().referrers(Relation.class)
166 .filter(relsFound::contains)
167 .findFirst()
168 .ifPresent(r -> {
169 trkAttr.put("name", r.getName() != null ? r.getName() : Long.toString(r.getId()));
170 trkAttr.put("desc", tr("based on osm route relation data, timestamps are synthetic"));
171 });
172 GpxData.ensureUniqueName(trkAttr, names, (String) trkAttr.get("name"));
173 }
174 List<Node> ln = flat.get(i).getWay().getNodes();
175 if (wayConnectionType.direction == WayConnectionType.Direction.BACKWARD)
176 Collections.reverse(ln);
177 for (Node n: ln) {
178 trkseg.add(OsmDataLayer.nodeToWayPoint(n, TimeUnit.SECONDS.toMillis(time)));
179 time += 1;
180 }
181 }
182 }
183 gpxData.addTrack(new GpxTrack(trk, trkAttr));
184
185 String lprefix = relations.iterator().next().getName();
186 if (lprefix == null || relations.size() > 1)
187 lprefix = tr("Selected Relations");
188 layerName = tr("{0} (GPX export)", lprefix);
189 } else {
190 layerName = "";
191 }
192
193 return new GpxLayer(gpxData, layerName, true);
194 }
195
196 private <T> Iterator<T> modeAwareIterator(List<T> list) {
197 return mode.contains(FROM_FIRST_MEMBER)
198 ? list.iterator()
199 : new LinkedList<>(list).descendingIterator();
200 }
201
202 /**
203 *
204 * @param e the ActionEvent
205 */
206 @Override
207 public void actionPerformed(ActionEvent e) {
208 if (mode.contains(TO_LAYER))
209 MainApplication.getLayerManager().addLayer(getLayer());
210 if (mode.contains(TO_FILE))
211 super.actionPerformed(e);
212 }
213
214 @Override
215 public void setPrimitives(Collection<? extends IPrimitive> primitives) {
216 relations = Collections.<Relation>emptySet();
217 if (!Utils.isEmpty(primitives)) {
218 relations = new SubclassFilteredCollection<>(primitives,
219 r -> r instanceof Relation && r.hasTag("type", Arrays.asList("route", "superroute")));
220 }
221 updateEnabledState();
222 }
223
224 @Override
225 protected void updateEnabledState() {
226 setEnabled(!relations.isEmpty());
227 }
228}
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