001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.gui.dialogs.relation;
003
004import java.util.ArrayList;
005import java.util.Arrays;
006import java.util.Collection;
007import java.util.Collections;
008import java.util.EnumSet;
009import java.util.HashSet;
010import java.util.Iterator;
011import java.util.List;
012import java.util.Set;
013import java.util.TreeSet;
014import java.util.concurrent.CopyOnWriteArrayList;
015
016import javax.swing.DefaultListSelectionModel;
017import javax.swing.ListSelectionModel;
018import javax.swing.event.TableModelEvent;
019import javax.swing.event.TableModelListener;
020import javax.swing.table.AbstractTableModel;
021
022import org.openstreetmap.josm.Main;
023import org.openstreetmap.josm.data.SelectionChangedListener;
024import org.openstreetmap.josm.data.osm.DataSet;
025import org.openstreetmap.josm.data.osm.OsmPrimitive;
026import org.openstreetmap.josm.data.osm.Relation;
027import org.openstreetmap.josm.data.osm.RelationMember;
028import org.openstreetmap.josm.data.osm.event.AbstractDatasetChangedEvent;
029import org.openstreetmap.josm.data.osm.event.DataChangedEvent;
030import org.openstreetmap.josm.data.osm.event.DataSetListener;
031import org.openstreetmap.josm.data.osm.event.NodeMovedEvent;
032import org.openstreetmap.josm.data.osm.event.PrimitivesAddedEvent;
033import org.openstreetmap.josm.data.osm.event.PrimitivesRemovedEvent;
034import org.openstreetmap.josm.data.osm.event.RelationMembersChangedEvent;
035import org.openstreetmap.josm.data.osm.event.TagsChangedEvent;
036import org.openstreetmap.josm.data.osm.event.WayNodesChangedEvent;
037import org.openstreetmap.josm.gui.dialogs.relation.sort.RelationSorter;
038import org.openstreetmap.josm.gui.dialogs.relation.sort.WayConnectionType;
039import org.openstreetmap.josm.gui.dialogs.relation.sort.WayConnectionTypeCalculator;
040import org.openstreetmap.josm.gui.layer.OsmDataLayer;
041import org.openstreetmap.josm.gui.tagging.presets.TaggingPreset;
042import org.openstreetmap.josm.gui.tagging.presets.TaggingPresetHandler;
043import org.openstreetmap.josm.gui.tagging.presets.TaggingPresetType;
044import org.openstreetmap.josm.gui.util.GuiHelper;
045import org.openstreetmap.josm.gui.widgets.OsmPrimitivesTableModel;
046
047public class MemberTableModel extends AbstractTableModel
048implements TableModelListener, SelectionChangedListener, DataSetListener, OsmPrimitivesTableModel {
049
050    /**
051     * data of the table model: The list of members and the cached WayConnectionType of each member.
052     **/
053    private transient List<RelationMember> members;
054    private transient List<WayConnectionType> connectionType;
055
056    private DefaultListSelectionModel listSelectionModel;
057    private final CopyOnWriteArrayList<IMemberModelListener> listeners;
058    private final transient OsmDataLayer layer;
059    private final transient TaggingPresetHandler presetHandler;
060
061    private final transient WayConnectionTypeCalculator wayConnectionTypeCalculator = new WayConnectionTypeCalculator();
062    private final transient RelationSorter relationSorter = new RelationSorter();
063
064    /**
065     * constructor
066     */
067    public MemberTableModel(OsmDataLayer layer, TaggingPresetHandler presetHandler) {
068        members = new ArrayList<>();
069        listeners = new CopyOnWriteArrayList<>();
070        this.layer = layer;
071        this.presetHandler = presetHandler;
072        addTableModelListener(this);
073    }
074
075    public OsmDataLayer getLayer() {
076        return layer;
077    }
078
079    public void register() {
080        DataSet.addSelectionListener(this);
081        getLayer().data.addDataSetListener(this);
082    }
083
084    public void unregister() {
085        DataSet.removeSelectionListener(this);
086        getLayer().data.removeDataSetListener(this);
087    }
088
089    /* --------------------------------------------------------------------------- */
090    /* Interface SelectionChangedListener                                          */
091    /* --------------------------------------------------------------------------- */
092    @Override
093    public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
094        if (Main.main.getEditLayer() != this.layer) return;
095        // just trigger a repaint
096        Collection<RelationMember> sel = getSelectedMembers();
097        fireTableDataChanged();
098        setSelectedMembers(sel);
099    }
100
101    /* --------------------------------------------------------------------------- */
102    /* Interface DataSetListener                                                   */
103    /* --------------------------------------------------------------------------- */
104    @Override
105    public void dataChanged(DataChangedEvent event) {
106        // just trigger a repaint - the display name of the relation members may have changed
107        Collection<RelationMember> sel = getSelectedMembers();
108        GuiHelper.runInEDTAndWait(new Runnable() {
109            public void run() {
110                fireTableDataChanged();
111            }
112        });
113        setSelectedMembers(sel);
114    }
115
116    @Override
117    public void nodeMoved(NodeMovedEvent event) {
118        // ignore
119    }
120
121    @Override
122    public void primitivesAdded(PrimitivesAddedEvent event) {
123        // ignore
124    }
125
126    @Override
127    public void primitivesRemoved(PrimitivesRemovedEvent event) {
128        // ignore - the relation in the editor might become out of sync with the relation
129        // in the dataset. We will deal with it when the relation editor is closed or
130        // when the changes in the editor are applied.
131    }
132
133    @Override
134    public void relationMembersChanged(RelationMembersChangedEvent event) {
135        // ignore - the relation in the editor might become out of sync with the relation
136        // in the dataset. We will deal with it when the relation editor is closed or
137        // when the changes in the editor are applied.
138    }
139
140    @Override
141    public void tagsChanged(TagsChangedEvent event) {
142        // just refresh the respective table cells
143        //
144        Collection<RelationMember> sel = getSelectedMembers();
145        for (int i = 0; i < members.size(); i++) {
146            if (members.get(i).getMember() == event.getPrimitive()) {
147                fireTableCellUpdated(i, 1 /* the column with the primitive name */);
148            }
149        }
150        setSelectedMembers(sel);
151    }
152
153    @Override
154    public void wayNodesChanged(WayNodesChangedEvent event) {
155        // ignore
156    }
157
158    @Override
159    public void otherDatasetChange(AbstractDatasetChangedEvent event) {
160        // ignore
161    }
162
163    /* --------------------------------------------------------------------------- */
164
165    public void addMemberModelListener(IMemberModelListener listener) {
166        if (listener != null) {
167            listeners.addIfAbsent(listener);
168        }
169    }
170
171    public void removeMemberModelListener(IMemberModelListener listener) {
172        listeners.remove(listener);
173    }
174
175    protected void fireMakeMemberVisible(int index) {
176        for (IMemberModelListener listener : listeners) {
177            listener.makeMemberVisible(index);
178        }
179    }
180
181    public void populate(Relation relation) {
182        members.clear();
183        if (relation != null) {
184            // make sure we work with clones of the relation members in the model.
185            members.addAll(new Relation(relation).getMembers());
186        }
187        fireTableDataChanged();
188    }
189
190    @Override
191    public int getColumnCount() {
192        return 3;
193    }
194
195    @Override
196    public int getRowCount() {
197        return members.size();
198    }
199
200    @Override
201    public Object getValueAt(int rowIndex, int columnIndex) {
202        switch (columnIndex) {
203        case 0:
204            return members.get(rowIndex).getRole();
205        case 1:
206            return members.get(rowIndex).getMember();
207        case 2:
208            return getWayConnection(rowIndex);
209        }
210        // should not happen
211        return null;
212    }
213
214    @Override
215    public boolean isCellEditable(int rowIndex, int columnIndex) {
216        return columnIndex == 0;
217    }
218
219    @Override
220    public void setValueAt(Object value, int rowIndex, int columnIndex) {
221        // fix #10524 - IndexOutOfBoundsException: Index: 2, Size: 2
222        if (rowIndex >= members.size()) {
223            return;
224        }
225        RelationMember member = members.get(rowIndex);
226        RelationMember newMember = new RelationMember(value.toString(), member.getMember());
227        members.remove(rowIndex);
228        members.add(rowIndex, newMember);
229    }
230
231    @Override
232    public OsmPrimitive getReferredPrimitive(int idx) {
233        return members.get(idx).getMember();
234    }
235
236    public void moveUp(int[] selectedRows) {
237        if (!canMoveUp(selectedRows))
238            return;
239
240        for (int row : selectedRows) {
241            RelationMember member1 = members.get(row);
242            RelationMember member2 = members.get(row - 1);
243            members.set(row, member2);
244            members.set(row - 1, member1);
245        }
246        fireTableDataChanged();
247        getSelectionModel().setValueIsAdjusting(true);
248        getSelectionModel().clearSelection();
249        for (int row : selectedRows) {
250            row--;
251            getSelectionModel().addSelectionInterval(row, row);
252        }
253        getSelectionModel().setValueIsAdjusting(false);
254        fireMakeMemberVisible(selectedRows[0] - 1);
255    }
256
257    public void moveDown(int[] selectedRows) {
258        if (!canMoveDown(selectedRows))
259            return;
260
261        for (int i = selectedRows.length - 1; i >= 0; i--) {
262            int row = selectedRows[i];
263            RelationMember member1 = members.get(row);
264            RelationMember member2 = members.get(row + 1);
265            members.set(row, member2);
266            members.set(row + 1, member1);
267        }
268        fireTableDataChanged();
269        getSelectionModel();
270        getSelectionModel().setValueIsAdjusting(true);
271        getSelectionModel().clearSelection();
272        for (int row : selectedRows) {
273            row++;
274            getSelectionModel().addSelectionInterval(row, row);
275        }
276        getSelectionModel().setValueIsAdjusting(false);
277        fireMakeMemberVisible(selectedRows[0] + 1);
278    }
279
280    public void remove(int[] selectedRows) {
281        if (!canRemove(selectedRows))
282            return;
283        int offset = 0;
284        for (int row : selectedRows) {
285            row -= offset;
286            if (members.size() > row) {
287                members.remove(row);
288                offset++;
289            }
290        }
291        fireTableDataChanged();
292    }
293
294    public boolean canMoveUp(int[] rows) {
295        if (rows == null || rows.length == 0)
296            return false;
297        Arrays.sort(rows);
298        return rows[0] > 0 && !members.isEmpty();
299    }
300
301    public boolean canMoveDown(int[] rows) {
302        if (rows == null || rows.length == 0)
303            return false;
304        Arrays.sort(rows);
305        return !members.isEmpty() && rows[rows.length - 1] < members.size() - 1;
306    }
307
308    public boolean canRemove(int[] rows) {
309        if (rows == null || rows.length == 0)
310            return false;
311        return true;
312    }
313
314    public DefaultListSelectionModel getSelectionModel() {
315        if (listSelectionModel == null) {
316            listSelectionModel = new DefaultListSelectionModel();
317            listSelectionModel.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
318        }
319        return listSelectionModel;
320    }
321
322    public void removeMembersReferringTo(List<? extends OsmPrimitive> primitives) {
323        if (primitives == null)
324            return;
325        Iterator<RelationMember> it = members.iterator();
326        while (it.hasNext()) {
327            RelationMember member = it.next();
328            if (primitives.contains(member.getMember())) {
329                it.remove();
330            }
331        }
332        fireTableDataChanged();
333    }
334
335    public void applyToRelation(Relation relation) {
336        relation.setMembers(members);
337    }
338
339    public boolean hasSameMembersAs(Relation relation) {
340        if (relation == null)
341            return false;
342        if (relation.getMembersCount() != members.size())
343            return false;
344        for (int i = 0; i < relation.getMembersCount(); i++) {
345            if (!relation.getMember(i).equals(members.get(i)))
346                return false;
347        }
348        return true;
349    }
350
351    /**
352     * Replies the set of incomplete primitives
353     *
354     * @return the set of incomplete primitives
355     */
356    public Set<OsmPrimitive> getIncompleteMemberPrimitives() {
357        Set<OsmPrimitive> ret = new HashSet<>();
358        for (RelationMember member : members) {
359            if (member.getMember().isIncomplete()) {
360                ret.add(member.getMember());
361            }
362        }
363        return ret;
364    }
365
366    /**
367     * Replies the set of selected incomplete primitives
368     *
369     * @return the set of selected incomplete primitives
370     */
371    public Set<OsmPrimitive> getSelectedIncompleteMemberPrimitives() {
372        Set<OsmPrimitive> ret = new HashSet<>();
373        for (RelationMember member : getSelectedMembers()) {
374            if (member.getMember().isIncomplete()) {
375                ret.add(member.getMember());
376            }
377        }
378        return ret;
379    }
380
381    /**
382     * Replies true if at least one the relation members is incomplete
383     *
384     * @return true if at least one the relation members is incomplete
385     */
386    public boolean hasIncompleteMembers() {
387        for (RelationMember member : members) {
388            if (member.getMember().isIncomplete())
389                return true;
390        }
391        return false;
392    }
393
394    /**
395     * Replies true if at least one of the selected members is incomplete
396     *
397     * @return true if at least one of the selected members is incomplete
398     */
399    public boolean hasIncompleteSelectedMembers() {
400        for (RelationMember member : getSelectedMembers()) {
401            if (member.getMember().isIncomplete())
402                return true;
403        }
404        return false;
405    }
406
407    protected List<Integer> getSelectedIndices() {
408        List<Integer> selectedIndices = new ArrayList<>();
409        for (int i = 0; i < members.size(); i++) {
410            if (getSelectionModel().isSelectedIndex(i)) {
411                selectedIndices.add(i);
412            }
413        }
414        return selectedIndices;
415    }
416
417    private void addMembersAtIndex(List<? extends OsmPrimitive> primitives, int index) {
418        final Collection<TaggingPreset> presets = TaggingPreset.getMatchingPresets(EnumSet.of(TaggingPresetType.RELATION),
419                presetHandler.getSelection().iterator().next().getKeys(), false);
420        if (primitives == null)
421            return;
422        int idx = index;
423        for (OsmPrimitive primitive : primitives) {
424            Set<String> potentialRoles = new TreeSet<>();
425            for (TaggingPreset tp : presets) {
426                String suggestedRole = tp.suggestRoleForOsmPrimitive(primitive);
427                if (suggestedRole != null) {
428                    potentialRoles.add(suggestedRole);
429                }
430            }
431            // TODO: propose user to choose role among potential ones instead of picking first one
432            final String role = potentialRoles.isEmpty() ? null : potentialRoles.iterator().next();
433            RelationMember member = new RelationMember(role == null ? "" : role, primitive);
434            members.add(idx++, member);
435        }
436        fireTableDataChanged();
437        getSelectionModel().clearSelection();
438        getSelectionModel().addSelectionInterval(index, index + primitives.size() - 1);
439        fireMakeMemberVisible(index);
440    }
441
442    public void addMembersAtBeginning(List<? extends OsmPrimitive> primitives) {
443        addMembersAtIndex(primitives, 0);
444    }
445
446    public void addMembersAtEnd(List<? extends OsmPrimitive> primitives) {
447        addMembersAtIndex(primitives, members.size());
448    }
449
450    public void addMembersBeforeIdx(List<? extends OsmPrimitive> primitives, int idx) {
451        addMembersAtIndex(primitives, idx);
452    }
453
454    public void addMembersAfterIdx(List<? extends OsmPrimitive> primitives, int idx) {
455        addMembersAtIndex(primitives, idx + 1);
456    }
457
458    /**
459     * Replies the number of members which refer to a particular primitive
460     *
461     * @param primitive the primitive
462     * @return the number of members which refer to a particular primitive
463     */
464    public int getNumMembersWithPrimitive(OsmPrimitive primitive) {
465        int count = 0;
466        for (RelationMember member : members) {
467            if (member.getMember().equals(primitive)) {
468                count++;
469            }
470        }
471        return count;
472    }
473
474    /**
475     * updates the role of the members given by the indices in <code>idx</code>
476     *
477     * @param idx the array of indices
478     * @param role the new role
479     */
480    public void updateRole(int[] idx, String role) {
481        if (idx == null || idx.length == 0)
482            return;
483        for (int row : idx) {
484            // fix #7885 - IndexOutOfBoundsException: Index: 39, Size: 39
485            if (row >= members.size()) {
486                continue;
487            }
488            RelationMember oldMember = members.get(row);
489            RelationMember newMember = new RelationMember(role, oldMember.getMember());
490            members.remove(row);
491            members.add(row, newMember);
492        }
493        fireTableDataChanged();
494        for (int row : idx) {
495            getSelectionModel().addSelectionInterval(row, row);
496        }
497    }
498
499    /**
500     * Get the currently selected relation members
501     *
502     * @return a collection with the currently selected relation members
503     */
504    public Collection<RelationMember> getSelectedMembers() {
505        List<RelationMember> selectedMembers = new ArrayList<>();
506        for (int i : getSelectedIndices()) {
507            selectedMembers.add(members.get(i));
508        }
509        return selectedMembers;
510    }
511
512    /**
513     * Replies the set of selected referers. Never null, but may be empty.
514     *
515     * @return the set of selected referers
516     */
517    public Collection<OsmPrimitive> getSelectedChildPrimitives() {
518        Collection<OsmPrimitive> ret = new ArrayList<>();
519        for (RelationMember m: getSelectedMembers()) {
520            ret.add(m.getMember());
521        }
522        return ret;
523    }
524
525    /**
526     * Replies the set of selected referers. Never null, but may be empty.
527     *
528     * @return the set of selected referers
529     */
530    public Set<OsmPrimitive> getChildPrimitives(Collection<? extends OsmPrimitive> referenceSet) {
531        Set<OsmPrimitive> ret = new HashSet<>();
532        if (referenceSet == null) return null;
533        for (RelationMember m: members) {
534            if (referenceSet.contains(m.getMember())) {
535                ret.add(m.getMember());
536            }
537        }
538        return ret;
539    }
540
541    /**
542     * Selects the members in the collection selectedMembers
543     *
544     * @param selectedMembers the collection of selected members
545     */
546    public void setSelectedMembers(Collection<RelationMember> selectedMembers) {
547        if (selectedMembers == null || selectedMembers.isEmpty()) {
548            getSelectionModel().clearSelection();
549            return;
550        }
551
552        // lookup the indices for the respective members
553        //
554        Set<Integer> selectedIndices = new HashSet<>();
555        for (RelationMember member : selectedMembers) {
556            for (int idx = 0; idx < members.size(); ++idx) {
557                if (member.equals(members.get(idx))) {
558                    selectedIndices.add(idx);
559                }
560            }
561        }
562        setSelectedMembersIdx(selectedIndices);
563    }
564
565    /**
566     * Selects the members in the collection selectedIndices
567     *
568     * @param selectedIndices the collection of selected member indices
569     */
570    public void setSelectedMembersIdx(Collection<Integer> selectedIndices) {
571        if (selectedIndices == null || selectedIndices.isEmpty()) {
572            getSelectionModel().clearSelection();
573            return;
574        }
575        // select the members
576        //
577        getSelectionModel().setValueIsAdjusting(true);
578        getSelectionModel().clearSelection();
579        for (int row : selectedIndices) {
580            getSelectionModel().addSelectionInterval(row, row);
581        }
582        getSelectionModel().setValueIsAdjusting(false);
583        // make the first selected member visible
584        //
585        if (!selectedIndices.isEmpty()) {
586            fireMakeMemberVisible(Collections.min(selectedIndices));
587        }
588    }
589
590    /**
591     * Replies true if the index-th relation members referrs
592     * to an editable relation, i.e. a relation which is not
593     * incomplete.
594     *
595     * @param index the index
596     * @return true, if the index-th relation members referrs
597     * to an editable relation, i.e. a relation which is not
598     * incomplete
599     */
600    public boolean isEditableRelation(int index) {
601        if (index < 0 || index >= members.size())
602            return false;
603        RelationMember member = members.get(index);
604        if (!member.isRelation())
605            return false;
606        Relation r = member.getRelation();
607        return !r.isIncomplete();
608    }
609
610    /**
611     * Replies true if there is at least one relation member given as {@code members}
612     * which refers to at least on the primitives in {@code primitives}.
613     *
614     * @param members the members
615     * @param primitives the collection of primitives
616     * @return true if there is at least one relation member in this model
617     * which refers to at least on the primitives in <code>primitives</code>; false
618     * otherwise
619     */
620    public static boolean hasMembersReferringTo(Collection<RelationMember> members, Collection<OsmPrimitive> primitives) {
621        if (primitives == null || primitives.isEmpty())
622            return false;
623        Set<OsmPrimitive> referrers = new HashSet<>();
624        for (RelationMember member : members) {
625            referrers.add(member.getMember());
626        }
627        for (OsmPrimitive referred : primitives) {
628            if (referrers.contains(referred))
629                return true;
630        }
631        return false;
632    }
633
634    /**
635     * Replies true if there is at least one relation member in this model
636     * which refers to at least on the primitives in <code>primitives</code>.
637     *
638     * @param primitives the collection of primitives
639     * @return true if there is at least one relation member in this model
640     * which refers to at least on the primitives in <code>primitives</code>; false
641     * otherwise
642     */
643    public boolean hasMembersReferringTo(Collection<OsmPrimitive> primitives) {
644        return hasMembersReferringTo(members, primitives);
645    }
646
647    /**
648     * Selects all mebers which refer to {@link OsmPrimitive}s in the collections
649     * <code>primitmives</code>. Does nothing is primitives is null.
650     *
651     * @param primitives the collection of primitives
652     */
653    public void selectMembersReferringTo(Collection<? extends OsmPrimitive> primitives) {
654        if (primitives == null) return;
655        getSelectionModel().setValueIsAdjusting(true);
656        getSelectionModel().clearSelection();
657        for (int i = 0; i < members.size(); i++) {
658            RelationMember m = members.get(i);
659            if (primitives.contains(m.getMember())) {
660                this.getSelectionModel().addSelectionInterval(i, i);
661            }
662        }
663        getSelectionModel().setValueIsAdjusting(false);
664        if (!getSelectedIndices().isEmpty()) {
665            fireMakeMemberVisible(getSelectedIndices().get(0));
666        }
667    }
668
669    /**
670     * Replies true if <code>primitive</code> is currently selected in the layer this
671     * model is attached to
672     *
673     * @param primitive the primitive
674     * @return true if <code>primitive</code> is currently selected in the layer this
675     * model is attached to, false otherwise
676     */
677    public boolean isInJosmSelection(OsmPrimitive primitive) {
678        return layer.data.isSelected(primitive);
679    }
680
681    /**
682     * Sort the selected relation members by the way they are linked.
683     */
684    void sort() {
685        List<RelationMember> selectedMembers = new ArrayList<>(getSelectedMembers());
686        List<RelationMember> sortedMembers = null;
687        List<RelationMember> newMembers;
688        if (selectedMembers.size() <= 1) {
689            newMembers = relationSorter.sortMembers(members);
690            sortedMembers = newMembers;
691        } else {
692            sortedMembers = relationSorter.sortMembers(selectedMembers);
693            List<Integer> selectedIndices = getSelectedIndices();
694            newMembers = new ArrayList<>();
695            boolean inserted = false;
696            for (int i = 0; i < members.size(); i++) {
697                if (selectedIndices.contains(i)) {
698                    if (!inserted) {
699                        newMembers.addAll(sortedMembers);
700                        inserted = true;
701                    }
702                } else {
703                    newMembers.add(members.get(i));
704                }
705            }
706        }
707
708        if (members.size() != newMembers.size()) throw new AssertionError();
709
710        members.clear();
711        members.addAll(newMembers);
712        fireTableDataChanged();
713        setSelectedMembers(sortedMembers);
714    }
715
716    /**
717     * Sort the selected relation members and all members below by the way they are linked.
718     */
719    void sortBelow() {
720        final List<RelationMember> subList = members.subList(getSelectionModel().getMinSelectionIndex(), members.size());
721        final List<RelationMember> sorted = relationSorter.sortMembers(subList);
722        subList.clear();
723        subList.addAll(sorted);
724        fireTableDataChanged();
725        setSelectedMembers(sorted);
726    }
727
728    WayConnectionType getWayConnection(int i) {
729        if (connectionType == null) {
730            connectionType = wayConnectionTypeCalculator.updateLinks(members);
731        }
732        return connectionType.get(i);
733    }
734
735    @Override
736    public void tableChanged(TableModelEvent e) {
737        connectionType = null;
738    }
739
740    /**
741     * Reverse the relation members.
742     */
743    void reverse() {
744        List<Integer> selectedIndices = getSelectedIndices();
745        List<Integer> selectedIndicesReversed = getSelectedIndices();
746
747        if (selectedIndices.size() <= 1) {
748            Collections.reverse(members);
749            fireTableDataChanged();
750            setSelectedMembers(members);
751        } else {
752            Collections.reverse(selectedIndicesReversed);
753
754            List<RelationMember> newMembers = new ArrayList<>(members);
755
756            for (int i = 0; i < selectedIndices.size(); i++) {
757                newMembers.set(selectedIndices.get(i), members.get(selectedIndicesReversed.get(i)));
758            }
759
760            if (members.size() != newMembers.size()) throw new AssertionError();
761            members.clear();
762            members.addAll(newMembers);
763            fireTableDataChanged();
764            setSelectedMembersIdx(selectedIndices);
765        }
766    }
767}