001// License: GPL. For details, see LICENSE file.
002package org.openstreetmap.josm.gui.dialogs;
003
004import static org.openstreetmap.josm.tools.I18n.tr;
005import static org.openstreetmap.josm.tools.I18n.trn;
006
007import java.awt.Component;
008import java.awt.Rectangle;
009import java.awt.event.ActionEvent;
010import java.awt.event.ActionListener;
011import java.awt.event.KeyEvent;
012import java.awt.event.MouseEvent;
013import java.util.ArrayList;
014import java.util.Arrays;
015import java.util.Collection;
016import java.util.Collections;
017import java.util.HashSet;
018import java.util.Iterator;
019import java.util.LinkedList;
020import java.util.List;
021import java.util.Set;
022
023import javax.swing.AbstractAction;
024import javax.swing.AbstractListModel;
025import javax.swing.DefaultListSelectionModel;
026import javax.swing.JList;
027import javax.swing.JMenuItem;
028import javax.swing.JPopupMenu;
029import javax.swing.ListSelectionModel;
030import javax.swing.event.ListDataEvent;
031import javax.swing.event.ListDataListener;
032import javax.swing.event.ListSelectionEvent;
033import javax.swing.event.ListSelectionListener;
034
035import org.openstreetmap.josm.Main;
036import org.openstreetmap.josm.actions.AbstractSelectAction;
037import org.openstreetmap.josm.actions.AutoScaleAction;
038import org.openstreetmap.josm.actions.relation.DownloadSelectedIncompleteMembersAction;
039import org.openstreetmap.josm.actions.relation.EditRelationAction;
040import org.openstreetmap.josm.actions.relation.SelectInRelationListAction;
041import org.openstreetmap.josm.actions.search.SearchAction.SearchSetting;
042import org.openstreetmap.josm.data.SelectionChangedListener;
043import org.openstreetmap.josm.data.coor.LatLon;
044import org.openstreetmap.josm.data.osm.Node;
045import org.openstreetmap.josm.data.osm.OsmPrimitive;
046import org.openstreetmap.josm.data.osm.OsmPrimitiveComparator;
047import org.openstreetmap.josm.data.osm.Relation;
048import org.openstreetmap.josm.data.osm.Way;
049import org.openstreetmap.josm.data.osm.event.AbstractDatasetChangedEvent;
050import org.openstreetmap.josm.data.osm.event.DataChangedEvent;
051import org.openstreetmap.josm.data.osm.event.DataSetListener;
052import org.openstreetmap.josm.data.osm.event.DatasetEventManager;
053import org.openstreetmap.josm.data.osm.event.DatasetEventManager.FireMode;
054import org.openstreetmap.josm.data.osm.event.NodeMovedEvent;
055import org.openstreetmap.josm.data.osm.event.PrimitivesAddedEvent;
056import org.openstreetmap.josm.data.osm.event.PrimitivesRemovedEvent;
057import org.openstreetmap.josm.data.osm.event.RelationMembersChangedEvent;
058import org.openstreetmap.josm.data.osm.event.SelectionEventManager;
059import org.openstreetmap.josm.data.osm.event.TagsChangedEvent;
060import org.openstreetmap.josm.data.osm.event.WayNodesChangedEvent;
061import org.openstreetmap.josm.data.osm.visitor.BoundingXYVisitor;
062import org.openstreetmap.josm.gui.DefaultNameFormatter;
063import org.openstreetmap.josm.gui.MapView;
064import org.openstreetmap.josm.gui.MapView.EditLayerChangeListener;
065import org.openstreetmap.josm.gui.OsmPrimitivRenderer;
066import org.openstreetmap.josm.gui.PopupMenuHandler;
067import org.openstreetmap.josm.gui.SideButton;
068import org.openstreetmap.josm.gui.history.HistoryBrowserDialogManager;
069import org.openstreetmap.josm.gui.layer.OsmDataLayer;
070import org.openstreetmap.josm.gui.util.GuiHelper;
071import org.openstreetmap.josm.gui.util.HighlightHelper;
072import org.openstreetmap.josm.gui.widgets.ListPopupMenu;
073import org.openstreetmap.josm.gui.widgets.PopupMenuLauncher;
074import org.openstreetmap.josm.tools.ImageProvider;
075import org.openstreetmap.josm.tools.InputMapUtils;
076import org.openstreetmap.josm.tools.Shortcut;
077import org.openstreetmap.josm.tools.SubclassFilteredCollection;
078import org.openstreetmap.josm.tools.Utils;
079
080/**
081 * A small tool dialog for displaying the current selection.
082 * @since 8
083 */
084public class SelectionListDialog extends ToggleDialog  {
085    private JList<OsmPrimitive> lstPrimitives;
086    private final DefaultListSelectionModel selectionModel = new DefaultListSelectionModel();
087    private final SelectionListModel model = new SelectionListModel(selectionModel);
088
089    private final SelectAction actSelect = new SelectAction();
090    private final SearchAction actSearch = new SearchAction();
091    private final ShowHistoryAction actShowHistory = new ShowHistoryAction();
092    private final ZoomToJOSMSelectionAction actZoomToJOSMSelection = new ZoomToJOSMSelectionAction();
093    private final ZoomToListSelection actZoomToListSelection = new ZoomToListSelection();
094    private final SelectInRelationListAction actSetRelationSelection = new SelectInRelationListAction();
095    private final EditRelationAction actEditRelationSelection = new EditRelationAction();
096    private final DownloadSelectedIncompleteMembersAction actDownloadSelIncompleteMembers = new DownloadSelectedIncompleteMembersAction();
097
098    /** the popup menu and its handler */
099    private final ListPopupMenu popupMenu;
100    private final transient PopupMenuHandler popupMenuHandler;
101
102    /**
103     * Builds the content panel for this dialog
104     */
105    protected void buildContentPanel() {
106        lstPrimitives = new JList<>(model);
107        lstPrimitives.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
108        lstPrimitives.setSelectionModel(selectionModel);
109        lstPrimitives.setCellRenderer(new OsmPrimitivRenderer());
110        // Fix #6290. Drag & Drop is not supported anyway and Copy/Paste is better propagated to main window
111        lstPrimitives.setTransferHandler(null);
112
113        lstPrimitives.getSelectionModel().addListSelectionListener(actSelect);
114        lstPrimitives.getSelectionModel().addListSelectionListener(actShowHistory);
115
116        // the select action
117        final SideButton selectButton = new SideButton(actSelect);
118        selectButton.createArrow(new ActionListener() {
119            @Override
120            public void actionPerformed(ActionEvent e) {
121                SelectionHistoryPopup.launch(selectButton, model.getSelectionHistory());
122            }
123        });
124
125        // the search button
126        final SideButton searchButton = new SideButton(actSearch);
127        searchButton.createArrow(new ActionListener() {
128            @Override
129            public void actionPerformed(ActionEvent e) {
130                SearchPopupMenu.launch(searchButton);
131            }
132        });
133
134        createLayout(lstPrimitives, true, Arrays.asList(new SideButton[] {
135            selectButton, searchButton, new SideButton(actShowHistory)
136        }));
137    }
138
139    /**
140     * Constructs a new {@code SelectionListDialog}.
141     */
142    public SelectionListDialog() {
143        super(tr("Selection"), "selectionlist", tr("Open a selection list window."),
144                Shortcut.registerShortcut("subwindow:selection", tr("Toggle: {0}",
145                tr("Current Selection")), KeyEvent.VK_T, Shortcut.ALT_SHIFT),
146                150, // default height
147                true // default is "show dialog"
148        );
149
150        buildContentPanel();
151        model.addListDataListener(new TitleUpdater());
152        model.addListDataListener(actZoomToJOSMSelection);
153
154        popupMenu = new ListPopupMenu(lstPrimitives);
155        popupMenuHandler = setupPopupMenuHandler();
156
157        lstPrimitives.addListSelectionListener(new ListSelectionListener() {
158            @Override
159            public void valueChanged(ListSelectionEvent e) {
160                actZoomToListSelection.valueChanged(e);
161                popupMenuHandler.setPrimitives(model.getSelected());
162            }
163        });
164
165        lstPrimitives.addMouseListener(new MouseEventHandler());
166
167        InputMapUtils.addEnterAction(lstPrimitives, actZoomToListSelection);
168    }
169
170    @Override
171    public void showNotify() {
172        MapView.addEditLayerChangeListener(model);
173        SelectionEventManager.getInstance().addSelectionListener(actShowHistory, FireMode.IN_EDT_CONSOLIDATED);
174        SelectionEventManager.getInstance().addSelectionListener(model, FireMode.IN_EDT_CONSOLIDATED);
175        DatasetEventManager.getInstance().addDatasetListener(model, FireMode.IN_EDT);
176        MapView.addEditLayerChangeListener(actSearch);
177        // editLayerChanged also gets the selection history of the level
178        OsmDataLayer editLayer = Main.main.getEditLayer();
179        model.editLayerChanged(null, editLayer);
180        if (editLayer != null) {
181            model.setJOSMSelection(editLayer.data.getAllSelected());
182        }
183        actSearch.updateEnabledState();
184    }
185
186    @Override
187    public void hideNotify() {
188        MapView.removeEditLayerChangeListener(actSearch);
189        MapView.removeEditLayerChangeListener(model);
190        SelectionEventManager.getInstance().removeSelectionListener(actShowHistory);
191        SelectionEventManager.getInstance().removeSelectionListener(model);
192        DatasetEventManager.getInstance().removeDatasetListener(model);
193    }
194
195    /**
196     * Responds to double clicks on the list of selected objects and launches the popup menu
197     */
198    class MouseEventHandler extends PopupMenuLauncher {
199        private final HighlightHelper helper = new HighlightHelper();
200        private boolean highlightEnabled = Main.pref.getBoolean("draw.target-highlight", true);
201
202        MouseEventHandler() {
203            super(popupMenu);
204        }
205
206        @Override
207        public void mouseClicked(MouseEvent e) {
208            int idx = lstPrimitives.locationToIndex(e.getPoint());
209            if (idx < 0) return;
210            if (isDoubleClick(e)) {
211                OsmDataLayer layer = Main.main.getEditLayer();
212                if (layer == null) return;
213                OsmPrimitive osm = model.getElementAt(idx);
214                Collection<OsmPrimitive> sel = layer.data.getSelected();
215                if (sel.size() != 1 || !sel.iterator().next().equals(osm)) {
216                    // Select primitive if it's not the whole current selection
217                    layer.data.setSelected(Collections.singleton(osm));
218                } else if (osm instanceof Relation) {
219                    // else open relation editor if applicable
220                    actEditRelationSelection.actionPerformed(null);
221                }
222            } else if (highlightEnabled && Main.isDisplayingMapView()) {
223                if (helper.highlightOnly(model.getElementAt(idx))) {
224                    Main.map.mapView.repaint();
225                }
226            }
227        }
228
229        @Override
230        public void mouseExited(MouseEvent me) {
231            if (highlightEnabled) helper.clear();
232            super.mouseExited(me);
233        }
234    }
235
236    private PopupMenuHandler setupPopupMenuHandler() {
237        PopupMenuHandler handler = new PopupMenuHandler(popupMenu);
238        handler.addAction(actZoomToJOSMSelection);
239        handler.addAction(actZoomToListSelection);
240        handler.addSeparator();
241        handler.addAction(actSetRelationSelection);
242        handler.addAction(actEditRelationSelection);
243        handler.addSeparator();
244        handler.addAction(actDownloadSelIncompleteMembers);
245        return handler;
246    }
247
248    /**
249     * Replies the popup menu handler.
250     * @return The popup menu handler
251     */
252    public PopupMenuHandler getPopupMenuHandler() {
253        return popupMenuHandler;
254    }
255
256    /**
257     * Replies the selected OSM primitives.
258     * @return The selected OSM primitives
259     */
260    public Collection<OsmPrimitive> getSelectedPrimitives() {
261        return model.getSelected();
262    }
263
264    /**
265     * Updates the dialog title with a summary of the current JOSM selection
266     */
267    class TitleUpdater implements ListDataListener {
268        protected void updateTitle() {
269            setTitle(model.getJOSMSelectionSummary());
270        }
271
272        @Override
273        public void contentsChanged(ListDataEvent e) {
274            updateTitle();
275        }
276
277        @Override
278        public void intervalAdded(ListDataEvent e) {
279            updateTitle();
280        }
281
282        @Override
283        public void intervalRemoved(ListDataEvent e) {
284            updateTitle();
285        }
286    }
287
288    /**
289     * Launches the search dialog
290     */
291    static class SearchAction extends AbstractAction implements EditLayerChangeListener {
292        /**
293         * Constructs a new {@code SearchAction}.
294         */
295        SearchAction() {
296            putValue(NAME, tr("Search"));
297            putValue(SHORT_DESCRIPTION,   tr("Search for objects"));
298            putValue(SMALL_ICON, ImageProvider.get("dialogs", "search"));
299            updateEnabledState();
300        }
301
302        @Override
303        public void actionPerformed(ActionEvent e) {
304            if (!isEnabled()) return;
305            org.openstreetmap.josm.actions.search.SearchAction.search();
306        }
307
308        protected void updateEnabledState() {
309            setEnabled(Main.main != null && Main.main.hasEditLayer());
310        }
311
312        @Override
313        public void editLayerChanged(OsmDataLayer oldLayer, OsmDataLayer newLayer) {
314            updateEnabledState();
315        }
316    }
317
318    /**
319     * Sets the current JOSM selection to the OSM primitives selected in the list
320     * of this dialog
321     */
322    class SelectAction extends AbstractSelectAction implements ListSelectionListener {
323        /**
324         * Constructs a new {@code SelectAction}.
325         */
326        SelectAction() {
327            updateEnabledState();
328        }
329
330        @Override
331        public void actionPerformed(ActionEvent e) {
332            Collection<OsmPrimitive> sel = model.getSelected();
333            if (sel.isEmpty()) return;
334            OsmDataLayer editLayer = Main.main.getEditLayer();
335            if (editLayer == null) return;
336            editLayer.data.setSelected(sel);
337            model.selectionModel.setSelectionInterval(0, sel.size()-1);
338        }
339
340        protected void updateEnabledState() {
341            setEnabled(!model.getSelected().isEmpty());
342        }
343
344        @Override
345        public void valueChanged(ListSelectionEvent e) {
346            updateEnabledState();
347        }
348    }
349
350    /**
351     * The action for showing history information of the current history item.
352     */
353    class ShowHistoryAction extends AbstractAction implements ListSelectionListener, SelectionChangedListener {
354        /**
355         * Constructs a new {@code ShowHistoryAction}.
356         */
357        ShowHistoryAction() {
358            putValue(NAME, tr("History"));
359            putValue(SHORT_DESCRIPTION, tr("Display the history of the selected objects."));
360            putValue(SMALL_ICON, ImageProvider.get("dialogs", "history"));
361            updateEnabledState(model.getSize());
362        }
363
364        @Override
365        public void actionPerformed(ActionEvent e) {
366            Collection<OsmPrimitive> sel = model.getSelected();
367            if (sel.isEmpty() && model.getSize() != 1) {
368                return;
369            } else if (sel.isEmpty()) {
370                sel = Collections.singleton(model.getElementAt(0));
371            }
372            HistoryBrowserDialogManager.getInstance().showHistory(sel);
373        }
374
375        protected void updateEnabledState(int osmSelectionSize) {
376            // See #10830 - allow to click on history button is a single object is selected, even if not selected again in the list
377            setEnabled(!model.getSelected().isEmpty() || osmSelectionSize == 1);
378        }
379
380        @Override
381        public void valueChanged(ListSelectionEvent e) {
382            updateEnabledState(model.getSize());
383        }
384
385        @Override
386        public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
387            updateEnabledState(newSelection.size());
388        }
389    }
390
391    /**
392     * The action for zooming to the primitives in the current JOSM selection
393     *
394     */
395    class ZoomToJOSMSelectionAction extends AbstractAction implements ListDataListener {
396
397        ZoomToJOSMSelectionAction() {
398            putValue(NAME, tr("Zoom to selection"));
399            putValue(SHORT_DESCRIPTION, tr("Zoom to selection"));
400            putValue(SMALL_ICON, ImageProvider.get("dialogs/autoscale", "selection"));
401            updateEnabledState();
402        }
403
404        @Override
405        public void actionPerformed(ActionEvent e) {
406            AutoScaleAction.autoScale("selection");
407        }
408
409        public void updateEnabledState() {
410            setEnabled(model.getSize() > 0);
411        }
412
413        @Override
414        public void contentsChanged(ListDataEvent e) {
415            updateEnabledState();
416        }
417
418        @Override
419        public void intervalAdded(ListDataEvent e) {
420            updateEnabledState();
421        }
422
423        @Override
424        public void intervalRemoved(ListDataEvent e) {
425            updateEnabledState();
426        }
427    }
428
429    /**
430     * The action for zooming to the primitives which are currently selected in
431     * the list displaying the JOSM selection
432     *
433     */
434    class ZoomToListSelection extends AbstractAction implements ListSelectionListener {
435        /**
436         * Constructs a new {@code ZoomToListSelection}.
437         */
438        ZoomToListSelection() {
439            putValue(NAME, tr("Zoom to selected element(s)"));
440            putValue(SHORT_DESCRIPTION, tr("Zoom to selected element(s)"));
441            putValue(SMALL_ICON, ImageProvider.get("dialogs/autoscale", "selection"));
442            updateEnabledState();
443        }
444
445        @Override
446        public void actionPerformed(ActionEvent e) {
447            BoundingXYVisitor box = new BoundingXYVisitor();
448            Collection<OsmPrimitive> sel = model.getSelected();
449            if (sel.isEmpty()) return;
450            box.computeBoundingBox(sel);
451            if (box.getBounds() == null)
452                return;
453            box.enlargeBoundingBox();
454            Main.map.mapView.zoomTo(box);
455        }
456
457        protected void updateEnabledState() {
458            setEnabled(!model.getSelected().isEmpty());
459        }
460
461        @Override
462        public void valueChanged(ListSelectionEvent e) {
463            updateEnabledState();
464        }
465    }
466
467    /**
468     * The list model for the list of OSM primitives in the current JOSM selection.
469     *
470     * The model also maintains a history of the last {@link SelectionListModel#SELECTION_HISTORY_SIZE}
471     * JOSM selection.
472     *
473     */
474    private static class SelectionListModel extends AbstractListModel<OsmPrimitive>
475    implements EditLayerChangeListener, SelectionChangedListener, DataSetListener {
476
477        private static final int SELECTION_HISTORY_SIZE = 10;
478
479        // Variable to store history from currentDataSet()
480        private LinkedList<Collection<? extends OsmPrimitive>> history;
481        private final transient List<OsmPrimitive> selection = new ArrayList<>();
482        private DefaultListSelectionModel selectionModel;
483
484        /**
485         * Constructor
486         * @param selectionModel the selection model used in the list
487         */
488        SelectionListModel(DefaultListSelectionModel selectionModel) {
489            this.selectionModel = selectionModel;
490        }
491
492        /**
493         * Replies a summary of the current JOSM selection
494         *
495         * @return a summary of the current JOSM selection
496         */
497        public synchronized String getJOSMSelectionSummary() {
498            if (selection.isEmpty()) return tr("Selection");
499            int numNodes = 0;
500            int numWays = 0;
501            int numRelations = 0;
502            for (OsmPrimitive p: selection) {
503                switch(p.getType()) {
504                case NODE: numNodes++; break;
505                case WAY: numWays++; break;
506                case RELATION: numRelations++; break;
507                }
508            }
509            return tr("Sel.: Rel.:{0} / Ways:{1} / Nodes:{2}", numRelations, numWays, numNodes);
510        }
511
512        /**
513         * Remembers a JOSM selection the history of JOSM selections
514         *
515         * @param selection the JOSM selection. Ignored if null or empty.
516         */
517        public void remember(Collection<? extends OsmPrimitive> selection) {
518            if (selection == null) return;
519            if (selection.isEmpty()) return;
520            if (history == null) return;
521            if (history.isEmpty()) {
522                history.add(selection);
523                return;
524            }
525            if (history.getFirst().equals(selection)) return;
526            history.addFirst(selection);
527            for (int i = 1; i < history.size(); ++i) {
528                if (history.get(i).equals(selection)) {
529                    history.remove(i);
530                    break;
531                }
532            }
533            int maxsize = Main.pref.getInteger("select.history-size", SELECTION_HISTORY_SIZE);
534            while (history.size() > maxsize) {
535                history.removeLast();
536            }
537        }
538
539        /**
540         * Replies the history of JOSM selections
541         *
542         * @return history of JOSM selections
543         */
544        public List<Collection<? extends OsmPrimitive>> getSelectionHistory() {
545            return history;
546        }
547
548        @Override
549        public synchronized OsmPrimitive getElementAt(int index) {
550            return selection.get(index);
551        }
552
553        @Override
554        public synchronized int getSize() {
555            return selection.size();
556        }
557
558        /**
559         * Replies the collection of OSM primitives currently selected in the view
560         * of this model
561         *
562         * @return choosen elements in the view
563         */
564        public synchronized Collection<OsmPrimitive> getSelected() {
565            Set<OsmPrimitive> sel = new HashSet<>();
566            for (int i = 0; i < getSize(); i++) {
567                if (selectionModel.isSelectedIndex(i)) {
568                    sel.add(selection.get(i));
569                }
570            }
571            return sel;
572        }
573
574        /**
575         * Sets the OSM primitives to be selected in the view of this model
576         *
577         * @param sel the collection of primitives to select
578         */
579        public synchronized void setSelected(Collection<OsmPrimitive> sel) {
580            selectionModel.clearSelection();
581            if (sel == null) return;
582            for (OsmPrimitive p: sel) {
583                int i = selection.indexOf(p);
584                if (i >= 0) {
585                    selectionModel.addSelectionInterval(i, i);
586                }
587            }
588        }
589
590        @Override
591        protected void fireContentsChanged(Object source, int index0, int index1) {
592            Collection<OsmPrimitive> sel = getSelected();
593            super.fireContentsChanged(source, index0, index1);
594            setSelected(sel);
595        }
596
597        /**
598         * Sets the collection of currently selected OSM objects
599         *
600         * @param selection the collection of currently selected OSM objects
601         */
602        public void setJOSMSelection(final Collection<? extends OsmPrimitive> selection) {
603            synchronized (this) {
604                this.selection.clear();
605                if (selection != null) {
606                    this.selection.addAll(selection);
607                    sort();
608                }
609            }
610            GuiHelper.runInEDTAndWait(new Runnable() {
611                @Override public void run() {
612                    fireContentsChanged(this, 0, getSize());
613                    if (selection != null) {
614                        remember(selection);
615                        if (selection.size() == 2) {
616                            Iterator<? extends OsmPrimitive> it = selection.iterator();
617                            OsmPrimitive n1 = it.next();
618                            OsmPrimitive n2 = it.next();
619                            // show distance between two selected nodes with coordinates
620                            if (n1 instanceof Node && n2 instanceof Node) {
621                                LatLon c1 = ((Node) n1).getCoor();
622                                LatLon c2 = ((Node) n2).getCoor();
623                                if (c1 != null && c2 != null) {
624                                    Main.map.statusLine.setDist(c1.greatCircleDistance(c2));
625                                    return;
626                                }
627                            }
628                        }
629                        Main.map.statusLine.setDist(
630                                new SubclassFilteredCollection<OsmPrimitive, Way>(selection, OsmPrimitive.wayPredicate));
631                    }
632                }
633            });
634        }
635
636        /**
637         * Triggers a refresh of the view for all primitives in {@code toUpdate}
638         * which are currently displayed in the view
639         *
640         * @param toUpdate the collection of primitives to update
641         */
642        public synchronized void update(Collection<? extends OsmPrimitive> toUpdate) {
643            if (toUpdate == null) return;
644            if (toUpdate.isEmpty()) return;
645            Collection<OsmPrimitive> sel = getSelected();
646            for (OsmPrimitive p: toUpdate) {
647                int i = selection.indexOf(p);
648                if (i >= 0) {
649                    super.fireContentsChanged(this, i, i);
650                }
651            }
652            setSelected(sel);
653        }
654
655        /**
656         * Sorts the current elements in the selection
657         */
658        public synchronized void sort() {
659            if (this.selection.size() <= Main.pref.getInteger("selection.no_sort_above", 100000)) {
660                boolean quick = this.selection.size() > Main.pref.getInteger("selection.fast_sort_above", 10000);
661                Collections.sort(this.selection, new OsmPrimitiveComparator(quick, false));
662            }
663        }
664
665        /* ------------------------------------------------------------------------ */
666        /* interface EditLayerChangeListener                                        */
667        /* ------------------------------------------------------------------------ */
668        @Override
669        public void editLayerChanged(OsmDataLayer oldLayer, OsmDataLayer newLayer) {
670            if (newLayer == null) {
671                setJOSMSelection(null);
672                history = null;
673            } else {
674                history = newLayer.data.getSelectionHistory();
675                setJOSMSelection(newLayer.data.getAllSelected());
676            }
677        }
678
679        /* ------------------------------------------------------------------------ */
680        /* interface SelectionChangeListener                                        */
681        /* ------------------------------------------------------------------------ */
682        @Override
683        public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
684            setJOSMSelection(newSelection);
685        }
686
687        /* ------------------------------------------------------------------------ */
688        /* interface DataSetListener                                                */
689        /* ------------------------------------------------------------------------ */
690        @Override
691        public void dataChanged(DataChangedEvent event) {
692            // refresh the whole list
693            fireContentsChanged(this, 0, getSize());
694        }
695
696        @Override
697        public void nodeMoved(NodeMovedEvent event) {
698            // may influence the display name of primitives, update the data
699            update(event.getPrimitives());
700        }
701
702        @Override
703        public void otherDatasetChange(AbstractDatasetChangedEvent event) {
704            // may influence the display name of primitives, update the data
705            update(event.getPrimitives());
706        }
707
708        @Override
709        public void relationMembersChanged(RelationMembersChangedEvent event) {
710            // may influence the display name of primitives, update the data
711            update(event.getPrimitives());
712        }
713
714        @Override
715        public void tagsChanged(TagsChangedEvent event) {
716            // may influence the display name of primitives, update the data
717            update(event.getPrimitives());
718        }
719
720        @Override
721        public void wayNodesChanged(WayNodesChangedEvent event) {
722            // may influence the display name of primitives, update the data
723            update(event.getPrimitives());
724        }
725
726        @Override
727        public void primitivesAdded(PrimitivesAddedEvent event) {
728            /* ignored - handled by SelectionChangeListener */
729        }
730
731        @Override
732        public void primitivesRemoved(PrimitivesRemovedEvent event) {
733            /* ignored - handled by SelectionChangeListener*/
734        }
735    }
736
737    /**
738     * A specialized {@link JMenuItem} for presenting one entry of the search history
739     *
740     * @author Jan Peter Stotz
741     */
742    protected static class SearchMenuItem extends JMenuItem implements ActionListener {
743        protected final transient SearchSetting s;
744
745        public SearchMenuItem(SearchSetting s) {
746            super(Utils.shortenString(s.toString(),
747                    org.openstreetmap.josm.actions.search.SearchAction.MAX_LENGTH_SEARCH_EXPRESSION_DISPLAY));
748            this.s = s;
749            addActionListener(this);
750        }
751
752        @Override
753        public void actionPerformed(ActionEvent e) {
754            org.openstreetmap.josm.actions.search.SearchAction.searchWithoutHistory(s);
755        }
756    }
757
758    /**
759     * The popup menu for the search history entries
760     *
761     */
762    protected static class SearchPopupMenu extends JPopupMenu {
763        public static void launch(Component parent) {
764            if (org.openstreetmap.josm.actions.search.SearchAction.getSearchHistory().isEmpty())
765                return;
766            JPopupMenu menu = new SearchPopupMenu();
767            Rectangle r = parent.getBounds();
768            menu.show(parent, r.x, r.y + r.height);
769        }
770
771        /**
772         * Constructs a new {@code SearchPopupMenu}.
773         */
774        public SearchPopupMenu() {
775            for (SearchSetting ss: org.openstreetmap.josm.actions.search.SearchAction.getSearchHistory()) {
776                add(new SearchMenuItem(ss));
777            }
778        }
779    }
780
781    /**
782     * A specialized {@link JMenuItem} for presenting one entry of the selection history
783     *
784     * @author Jan Peter Stotz
785     */
786    protected static class SelectionMenuItem extends JMenuItem implements ActionListener {
787        protected transient Collection<? extends OsmPrimitive> sel;
788
789        public SelectionMenuItem(Collection<? extends OsmPrimitive> sel) {
790            this.sel = sel;
791            int ways = 0;
792            int nodes = 0;
793            int relations = 0;
794            for (OsmPrimitive o : sel) {
795                if (!o.isSelectable()) continue; // skip unselectable primitives
796                if (o instanceof Way) {
797                    ways++;
798                } else if (o instanceof Node) {
799                    nodes++;
800                } else if (o instanceof Relation) {
801                    relations++;
802                }
803            }
804            StringBuilder text = new StringBuilder();
805            if (ways != 0) {
806                text.append(text.length() > 0 ? ", " : "")
807                .append(trn("{0} way", "{0} ways", ways, ways));
808            }
809            if (nodes != 0) {
810                text.append(text.length() > 0 ? ", " : "")
811                .append(trn("{0} node", "{0} nodes", nodes, nodes));
812            }
813            if (relations != 0) {
814                text.append(text.length() > 0 ? ", " : "")
815                .append(trn("{0} relation", "{0} relations", relations, relations));
816            }
817            if (ways + nodes + relations == 0) {
818                text.append(tr("Unselectable now"));
819                this.sel = new ArrayList<>(); // empty selection
820            }
821            DefaultNameFormatter df = DefaultNameFormatter.getInstance();
822            if (ways + nodes + relations == 1) {
823                text.append(": ");
824                for (OsmPrimitive o : sel) {
825                    text.append(o.getDisplayName(df));
826                }
827                setText(text.toString());
828            } else {
829                setText(tr("Selection: {0}", text));
830            }
831            addActionListener(this);
832        }
833
834        @Override
835        public void actionPerformed(ActionEvent e) {
836            Main.main.getCurrentDataSet().setSelected(sel);
837        }
838    }
839
840    /**
841     * The popup menu for the JOSM selection history entries
842     */
843    protected static class SelectionHistoryPopup extends JPopupMenu {
844        public static void launch(Component parent, Collection<Collection<? extends OsmPrimitive>> history) {
845            if (history == null || history.isEmpty()) return;
846            JPopupMenu menu = new SelectionHistoryPopup(history);
847            Rectangle r = parent.getBounds();
848            menu.show(parent, r.x, r.y + r.height);
849        }
850
851        public SelectionHistoryPopup(Collection<Collection<? extends OsmPrimitive>> history) {
852            for (Collection<? extends OsmPrimitive> sel : history) {
853                add(new SelectionMenuItem(sel));
854            }
855        }
856    }
857}