source: osm/applications/editors/josm/plugins/reltoolbox/src/relcontext/actions/ReconstructPolygonAction.java@ 35602

Last change on this file since 35602 was 35602, checked in by Zverikk, 5 years ago

[reltoolbox] no-shortcut for the reconstruct polygon action
File size: 8.8 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package relcontext.actions;
3
4import static org.openstreetmap.josm.tools.I18n.tr;
5
6import java.awt.event.ActionEvent;
7import java.awt.event.KeyEvent;
8import java.util.ArrayList;
9import java.util.Arrays;
10import java.util.Collections;
11import java.util.HashSet;
12import java.util.Iterator;
13import java.util.List;
14import java.util.Map;
15import java.util.Set;
16
17import javax.swing.JOptionPane;
18
19import org.openstreetmap.josm.actions.JosmAction;
20import org.openstreetmap.josm.command.AddCommand;
21import org.openstreetmap.josm.command.ChangeCommand;
22import org.openstreetmap.josm.command.Command;
23import org.openstreetmap.josm.command.DeleteCommand;
24import org.openstreetmap.josm.command.SequenceCommand;
25import org.openstreetmap.josm.data.UndoRedoHandler;
26import org.openstreetmap.josm.data.coor.EastNorth;
27import org.openstreetmap.josm.data.osm.DataSet;
28import org.openstreetmap.josm.data.osm.DefaultNameFormatter;
29import org.openstreetmap.josm.data.osm.MultipolygonBuilder;
30import org.openstreetmap.josm.data.osm.MultipolygonBuilder.JoinedPolygon;
31import org.openstreetmap.josm.data.osm.OsmPrimitive;
32import org.openstreetmap.josm.data.osm.Relation;
33import org.openstreetmap.josm.data.osm.RelationMember;
34import org.openstreetmap.josm.data.osm.Way;
35import org.openstreetmap.josm.gui.MainApplication;
36import org.openstreetmap.josm.tools.ImageProvider;
37import org.openstreetmap.josm.tools.Shortcut;
38
39import relcontext.ChosenRelation;
40import relcontext.ChosenRelationListener;
41
42/**
43 * Make a single polygon out of the multipolygon relation. The relation must have only outer members.
44 * @author Zverik
45 */
46public class ReconstructPolygonAction extends JosmAction implements ChosenRelationListener {
47 private ChosenRelation rel;
48
49 private static final List<String> IRRELEVANT_KEYS = Arrays.asList(new String[] {
50 "source", "created_by", "note"});
51
52 public ReconstructPolygonAction(ChosenRelation rel) {
53 super(tr("Reconstruct polygon"), "dialogs/filter", tr("Reconstruct polygon from multipolygon relation"),
54 Shortcut.registerShortcut("reltoolbox:reconstructpoly", tr("Relation Toolbox: {0}", tr("Reconstruct polygon from multipolygon relation")),
55 KeyEvent.CHAR_UNDEFINED, Shortcut.NONE), false);
56 this.rel = rel;
57 rel.addChosenRelationListener(this);
58 setEnabled(isSuitableRelation(rel.get()));
59 }
60
61 @Override
62 public void actionPerformed(ActionEvent e) {
63 Relation r = rel.get();
64 boolean relationReused = false;
65 List<Way> ways = new ArrayList<>();
66 boolean wont = false;
67 for (RelationMember m : r.getMembers()) {
68 if (m.isWay()) {
69 ways.add(m.getWay());
70 } else {
71 wont = true;
72 }
73 }
74 if (wont) {
75 JOptionPane.showMessageDialog(MainApplication.getMainFrame(),
76 tr("Multipolygon must consist only of ways"), tr("Reconstruct polygon"), JOptionPane.ERROR_MESSAGE);
77 return;
78 }
79
80 MultipolygonBuilder mpc = new MultipolygonBuilder();
81 String error = mpc.makeFromWays(ways);
82 if (error != null) {
83 JOptionPane.showMessageDialog(MainApplication.getMainFrame(), error);
84 return;
85 }
86
87 rel.clear();
88 List<OsmPrimitive> newSelection = new ArrayList<>();
89 List<Command> commands = new ArrayList<>();
90 Command relationDeleteCommand = DeleteCommand.delete(Collections.singleton(r), true, true);
91 if (relationDeleteCommand == null)
92 return;
93
94 DataSet ds = MainApplication.getLayerManager().getEditDataSet();
95 for (JoinedPolygon p : mpc.outerWays) {
96
97 ArrayList<JoinedPolygon> myInnerWays = new ArrayList<>();
98 for (JoinedPolygon i : mpc.innerWays) {
99 // if the first point of any inner ring is contained in this
100 // outer ring, then this inner ring belongs to us. This
101 // assumption only works if multipolygons have valid geometries
102 EastNorth en = i.ways.get(0).firstNode().getEastNorth();
103 if (p.area.contains(en.east(), en.north())) {
104 myInnerWays.add(i);
105 }
106 }
107
108 if (!myInnerWays.isEmpty()) {
109 // this ring has inner rings, so we leave a multipolygon in
110 // place and don't reconstruct the rings.
111 Relation n = null;
112 if (relationReused) {
113 n = new Relation();
114 n.setKeys(r.getKeys());
115 } else {
116 n = new Relation(r);
117 n.setMembers(null);
118 }
119 for (Way w : p.ways) {
120 n.addMember(new RelationMember("outer", w));
121 }
122 for (JoinedPolygon i : myInnerWays) {
123 for (Way w : i.ways) {
124 n.addMember(new RelationMember("inner", w));
125 }
126 }
127 if (relationReused) {
128 commands.add(new AddCommand(ds, n));
129 } else {
130 relationReused = true;
131 commands.add(new ChangeCommand(r, n));
132 }
133 newSelection.add(n);
134 continue;
135 }
136
137 // move all tags from relation and common tags from ways
138 // start with all tags from first way but only if area tags are present
139 Map<String, String> tags = p.ways.get(0).getKeys();
140 if (!p.ways.get(0).hasAreaTags()) {
141 tags.clear();
142 }
143 List<OsmPrimitive> relations = p.ways.get(0).getReferrers();
144 Set<String> noTags = new HashSet<>(r.keySet());
145 for (int i = 1; i < p.ways.size(); i++) {
146 Way w = p.ways.get(i);
147 for (String key : w.keySet()) {
148 String value = w.get(key);
149 if (!noTags.contains(key) && tags.containsKey(key) && !tags.get(key).equals(value)) {
150 tags.remove(key);
151 noTags.add(key);
152 }
153 }
154 List<OsmPrimitive> referrers = w.getReferrers();
155 for (Iterator<OsmPrimitive> ref1 = relations.iterator(); ref1.hasNext();) {
156 if (!referrers.contains(ref1.next())) {
157 ref1.remove();
158 }
159 }
160 }
161 tags.putAll(r.getKeys());
162 tags.remove("type");
163
164 // then delete ways that are not relevant (do not take part in other relations of have strange tags)
165 Way candidateWay = null;
166 for (Way w : p.ways) {
167 if (w.getReferrers().equals(relations)) {
168 // check tags that remain
169 Set<String> keys = new HashSet<>(w.keySet());
170 keys.removeAll(tags.keySet());
171 keys.removeAll(IRRELEVANT_KEYS);
172 if (keys.isEmpty()) {
173 if (candidateWay == null) {
174 candidateWay = w;
175 } else {
176 if (candidateWay.isNew() && !w.isNew()) {
177 // prefer ways that are already in the database
178 Way tmp = w;
179 w = candidateWay;
180 candidateWay = tmp;
181 }
182 commands.add(new DeleteCommand(w));
183 }
184 }
185 }
186 }
187
188 // take the first way, put all nodes into it, making it a closed polygon
189 Way result = candidateWay == null ? new Way() : new Way(candidateWay);
190 result.setNodes(p.nodes);
191 result.addNode(result.firstNode());
192 result.setKeys(tags);
193 newSelection.add(candidateWay == null ? result : candidateWay);
194 commands.add(candidateWay == null ? new AddCommand(ds, result) : new ChangeCommand(candidateWay, result));
195 }
196
197 // only delete the relation if it hasn't been re-used
198 if (!relationReused) {
199 commands.add(relationDeleteCommand);
200 }
201
202 UndoRedoHandler.getInstance().add(new SequenceCommand(tr("Reconstruct polygons from relation {0}",
203 r.getDisplayName(DefaultNameFormatter.getInstance())), commands));
204 ds.setSelected(newSelection);
205 }
206
207 @Override
208 public void chosenRelationChanged(Relation oldRelation, Relation newRelation) {
209 setEnabled(isSuitableRelation(newRelation));
210 }
211
212 private boolean isSuitableRelation(Relation newRelation) {
213 if (newRelation == null || !"multipolygon".equals(newRelation.get("type")) || newRelation.getMembersCount() == 0)
214 return false;
215 else
216 return true;
217 }
218}
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