001    // License: GPL. See LICENSE file for details.
002    
003    package org.openstreetmap.josm.gui.layer;
004    
005    import static org.openstreetmap.josm.gui.help.HelpUtil.ht;
006    import static org.openstreetmap.josm.tools.I18n.marktr;
007    import static org.openstreetmap.josm.tools.I18n.tr;
008    import static org.openstreetmap.josm.tools.I18n.trn;
009    
010    import java.awt.AlphaComposite;
011    import java.awt.Color;
012    import java.awt.Composite;
013    import java.awt.Graphics2D;
014    import java.awt.GridBagLayout;
015    import java.awt.Image;
016    import java.awt.Point;
017    import java.awt.Rectangle;
018    import java.awt.TexturePaint;
019    import java.awt.event.ActionEvent;
020    import java.awt.geom.Area;
021    import java.awt.image.BufferedImage;
022    import java.io.File;
023    import java.util.ArrayList;
024    import java.util.Arrays;
025    import java.util.Collection;
026    import java.util.HashMap;
027    import java.util.HashSet;
028    import java.util.List;
029    import java.util.Map;
030    import java.util.concurrent.CopyOnWriteArrayList;
031    
032    import javax.swing.AbstractAction;
033    import javax.swing.Action;
034    import javax.swing.Icon;
035    import javax.swing.ImageIcon;
036    import javax.swing.JLabel;
037    import javax.swing.JOptionPane;
038    import javax.swing.JPanel;
039    import javax.swing.JScrollPane;
040    import javax.swing.JTextArea;
041    
042    import org.openstreetmap.josm.Main;
043    import org.openstreetmap.josm.actions.ExpertToggleAction;
044    import org.openstreetmap.josm.actions.RenameLayerAction;
045    import org.openstreetmap.josm.actions.SaveActionBase;
046    import org.openstreetmap.josm.actions.ToggleUploadDiscouragedLayerAction;
047    import org.openstreetmap.josm.data.Bounds;
048    import org.openstreetmap.josm.data.SelectionChangedListener;
049    import org.openstreetmap.josm.data.conflict.Conflict;
050    import org.openstreetmap.josm.data.conflict.ConflictCollection;
051    import org.openstreetmap.josm.data.coor.LatLon;
052    import org.openstreetmap.josm.data.gpx.GpxData;
053    import org.openstreetmap.josm.data.gpx.ImmutableGpxTrack;
054    import org.openstreetmap.josm.data.gpx.WayPoint;
055    import org.openstreetmap.josm.data.osm.DataIntegrityProblemException;
056    import org.openstreetmap.josm.data.osm.DataSet;
057    import org.openstreetmap.josm.data.osm.DataSetMerger;
058    import org.openstreetmap.josm.data.osm.DataSource;
059    import org.openstreetmap.josm.data.osm.DatasetConsistencyTest;
060    import org.openstreetmap.josm.data.osm.IPrimitive;
061    import org.openstreetmap.josm.data.osm.Node;
062    import org.openstreetmap.josm.data.osm.OsmPrimitive;
063    import org.openstreetmap.josm.data.osm.Relation;
064    import org.openstreetmap.josm.data.osm.Way;
065    import org.openstreetmap.josm.data.osm.event.AbstractDatasetChangedEvent;
066    import org.openstreetmap.josm.data.osm.event.DataSetListenerAdapter;
067    import org.openstreetmap.josm.data.osm.event.DataSetListenerAdapter.Listener;
068    import org.openstreetmap.josm.data.osm.visitor.AbstractVisitor;
069    import org.openstreetmap.josm.data.osm.visitor.BoundingXYVisitor;
070    import org.openstreetmap.josm.data.osm.visitor.paint.MapRendererFactory;
071    import org.openstreetmap.josm.data.osm.visitor.paint.Rendering;
072    import org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache;
073    import org.openstreetmap.josm.data.projection.Projection;
074    import org.openstreetmap.josm.data.validation.TestError;
075    import org.openstreetmap.josm.gui.ExtendedDialog;
076    import org.openstreetmap.josm.gui.HelpAwareOptionPane;
077    import org.openstreetmap.josm.gui.HelpAwareOptionPane.ButtonSpec;
078    import org.openstreetmap.josm.gui.MapView;
079    import org.openstreetmap.josm.gui.dialogs.LayerListDialog;
080    import org.openstreetmap.josm.gui.dialogs.LayerListPopup;
081    import org.openstreetmap.josm.gui.progress.PleaseWaitProgressMonitor;
082    import org.openstreetmap.josm.gui.progress.ProgressMonitor;
083    import org.openstreetmap.josm.gui.util.GuiHelper;
084    import org.openstreetmap.josm.tools.DateUtils;
085    import org.openstreetmap.josm.tools.FilteredCollection;
086    import org.openstreetmap.josm.tools.GBC;
087    import org.openstreetmap.josm.tools.ImageProvider;
088    
089    /**
090     * A layer that holds OSM data from a specific dataset.
091     * The data can be fully edited.
092     *
093     * @author imi
094     */
095    public class OsmDataLayer extends Layer implements Listener, SelectionChangedListener {
096        static public final String REQUIRES_SAVE_TO_DISK_PROP = OsmDataLayer.class.getName() + ".requiresSaveToDisk";
097        static public final String REQUIRES_UPLOAD_TO_SERVER_PROP = OsmDataLayer.class.getName() + ".requiresUploadToServer";
098    
099        private boolean requiresSaveToFile = false;
100        private boolean requiresUploadToServer = false;
101        private boolean isChanged = true;
102        private int highlightUpdateCount;
103    
104        public List<TestError> validationErrors = new ArrayList<TestError>();
105    
106        protected void setRequiresSaveToFile(boolean newValue) {
107            boolean oldValue = requiresSaveToFile;
108            requiresSaveToFile = newValue;
109            if (oldValue != newValue) {
110                propertyChangeSupport.firePropertyChange(REQUIRES_SAVE_TO_DISK_PROP, oldValue, newValue);
111            }
112        }
113    
114        protected void setRequiresUploadToServer(boolean newValue) {
115            boolean oldValue = requiresUploadToServer;
116            requiresUploadToServer = newValue;
117            if (oldValue != newValue) {
118                propertyChangeSupport.firePropertyChange(REQUIRES_UPLOAD_TO_SERVER_PROP, oldValue, newValue);
119            }
120        }
121    
122        /** the global counter for created data layers */
123        static private int dataLayerCounter = 0;
124    
125        /**
126         * Replies a new unique name for a data layer
127         *
128         * @return a new unique name for a data layer
129         */
130        static public String createNewName() {
131            dataLayerCounter++;
132            return tr("Data Layer {0}", dataLayerCounter);
133        }
134    
135        public final static class DataCountVisitor extends AbstractVisitor {
136            public int nodes;
137            public int ways;
138            public int relations;
139            public int deletedNodes;
140            public int deletedWays;
141            public int deletedRelations;
142    
143            public void visit(final Node n) {
144                nodes++;
145                if (n.isDeleted()) {
146                    deletedNodes++;
147                }
148            }
149    
150            public void visit(final Way w) {
151                ways++;
152                if (w.isDeleted()) {
153                    deletedWays++;
154                }
155            }
156    
157            public void visit(final Relation r) {
158                relations++;
159                if (r.isDeleted()) {
160                    deletedRelations++;
161                }
162            }
163        }
164    
165        public interface CommandQueueListener {
166            void commandChanged(int queueSize, int redoSize);
167        }
168        
169        /**
170         * Listener called when a state of this layer has changed.
171         */
172        public interface LayerStateChangeListener {
173            /**
174             * Notifies that the "upload discouraged" (upload=no) state has changed.
175             * @param layer The layer that has been modified
176             * @param newValue The new value of the state
177             */
178            void uploadDiscouragedChanged(OsmDataLayer layer, boolean newValue);
179        }
180        
181        private final CopyOnWriteArrayList<LayerStateChangeListener> layerStateChangeListeners = new CopyOnWriteArrayList<LayerStateChangeListener>();
182        
183        /**
184         * Adds a layer state change listener
185         *
186         * @param listener the listener. Ignored if null or already registered.
187         * @since 5519
188         */
189        public void addLayerStateChangeListener(LayerStateChangeListener listener) {
190            if (listener != null) {
191                layerStateChangeListeners.addIfAbsent(listener);
192            }
193        }
194        
195        /**
196         * Removes a layer property change listener
197         *
198         * @param listener the listener. Ignored if null or already registered.
199         * @since 5519
200         */
201        public void removeLayerPropertyChangeListener(LayerStateChangeListener listener) {
202            layerStateChangeListeners.remove(listener);
203        }
204    
205        /**
206         * The data behind this layer.
207         */
208        public final DataSet data;
209    
210        /**
211         * the collection of conflicts detected in this layer
212         */
213        private ConflictCollection conflicts;
214    
215        /**
216         * a paint texture for non-downloaded area
217         */
218        private static TexturePaint hatched;
219    
220        static {
221            createHatchTexture();
222        }
223    
224        public static Color getBackgroundColor() {
225            return Main.pref.getColor(marktr("background"), Color.BLACK);
226        }
227    
228        public static Color getOutsideColor() {
229            return Main.pref.getColor(marktr("outside downloaded area"), Color.YELLOW);
230        }
231    
232        /**
233         * Initialize the hatch pattern used to paint the non-downloaded area
234         */
235        public static void createHatchTexture() {
236            BufferedImage bi = new BufferedImage(15, 15, BufferedImage.TYPE_INT_ARGB);
237            Graphics2D big = bi.createGraphics();
238            big.setColor(getBackgroundColor());
239            Composite comp = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.3f);
240            big.setComposite(comp);
241            big.fillRect(0,0,15,15);
242            big.setColor(getOutsideColor());
243            big.drawLine(0,15,15,0);
244            Rectangle r = new Rectangle(0, 0, 15,15);
245            hatched = new TexturePaint(bi, r);
246        }
247    
248        /**
249         * Construct a OsmDataLayer.
250         */
251        public OsmDataLayer(final DataSet data, final String name, final File associatedFile) {
252            super(name);
253            this.data = data;
254            this.setAssociatedFile(associatedFile);
255            conflicts = new ConflictCollection();
256            data.addDataSetListener(new DataSetListenerAdapter(this));
257            data.addDataSetListener(MultipolygonCache.getInstance());
258            DataSet.addSelectionListener(this);
259        }
260    
261        protected Icon getBaseIcon() {
262            return ImageProvider.get("layer", "osmdata_small");
263        }
264        
265        /**
266         * TODO: @return Return a dynamic drawn icon of the map data. The icon is
267         *         updated by a background thread to not disturb the running programm.
268         */
269        @Override public Icon getIcon() {
270            Icon baseIcon = getBaseIcon();
271            if (isUploadDiscouraged()) {
272                return ImageProvider.overlay(baseIcon,
273                        new ImageIcon(ImageProvider.get("warning-small").getImage().getScaledInstance(8, 8, Image.SCALE_SMOOTH)),
274                        ImageProvider.OverlayPosition.SOUTHEAST);
275            } else {
276                return baseIcon;
277            }
278        }
279    
280        /**
281         * Draw all primitives in this layer but do not draw modified ones (they
282         * are drawn by the edit layer).
283         * Draw nodes last to overlap the ways they belong to.
284         */
285        @Override public void paint(final Graphics2D g, final MapView mv, Bounds box) {
286            isChanged = false;
287            highlightUpdateCount = data.getHighlightUpdateCount();
288    
289            boolean active = mv.getActiveLayer() == this;
290            boolean inactive = !active && Main.pref.getBoolean("draw.data.inactive_color", true);
291            boolean virtual = !inactive && mv.isVirtualNodesEnabled();
292    
293            // draw the hatched area for non-downloaded region. only draw if we're the active
294            // and bounds are defined; don't draw for inactive layers or loaded GPX files etc
295            if (active && Main.pref.getBoolean("draw.data.downloaded_area", true) && !data.dataSources.isEmpty()) {
296                // initialize area with current viewport
297                Rectangle b = mv.getBounds();
298                // on some platforms viewport bounds seem to be offset from the left,
299                // over-grow it just to be sure
300                b.grow(100, 100);
301                Area a = new Area(b);
302    
303                // now successively subtract downloaded areas
304                for (Bounds bounds : data.getDataSourceBounds()) {
305                    if (bounds.isCollapsed()) {
306                        continue;
307                    }
308                    Point p1 = mv.getPoint(bounds.getMin());
309                    Point p2 = mv.getPoint(bounds.getMax());
310                    Rectangle r = new Rectangle(Math.min(p1.x, p2.x),Math.min(p1.y, p2.y),Math.abs(p2.x-p1.x),Math.abs(p2.y-p1.y));
311                    a.subtract(new Area(r));
312                }
313    
314                // paint remainder
315                g.setPaint(hatched);
316                g.fill(a);
317            }
318    
319            Rendering painter = MapRendererFactory.getInstance().createActiveRenderer(g, mv, inactive);
320            painter.render(data, virtual, box);
321            Main.map.conflictDialog.paintConflicts(g, mv);
322        }
323    
324        @Override public String getToolTipText() {
325            int nodes = new FilteredCollection<Node>(data.getNodes(), OsmPrimitive.nonDeletedPredicate).size();
326            int ways = new FilteredCollection<Way>(data.getWays(), OsmPrimitive.nonDeletedPredicate).size();
327    
328            String tool = trn("{0} node", "{0} nodes", nodes, nodes)+", ";
329            tool += trn("{0} way", "{0} ways", ways, ways);
330    
331            if (data.getVersion() != null) {
332                tool += ", " + tr("version {0}", data.getVersion());
333            }
334            File f = getAssociatedFile();
335            if (f != null) {
336                tool = "<html>"+tool+"<br>"+f.getPath()+"</html>";
337            }
338            return tool;
339        }
340    
341        @Override public void mergeFrom(final Layer from) {
342            final PleaseWaitProgressMonitor monitor = new PleaseWaitProgressMonitor(tr("Merging layers"));
343            monitor.setCancelable(false);
344            if (from instanceof OsmDataLayer && ((OsmDataLayer)from).isUploadDiscouraged()) {
345                setUploadDiscouraged(true);
346            }
347            mergeFrom(((OsmDataLayer)from).data, monitor);
348            monitor.close();
349        }
350    
351        /**
352         * merges the primitives in dataset <code>from</code> into the dataset of
353         * this layer
354         *
355         * @param from  the source data set
356         */
357        public void mergeFrom(final DataSet from) {
358            mergeFrom(from, null);
359        }
360        
361        /**
362         * merges the primitives in dataset <code>from</code> into the dataset of
363         * this layer
364         *
365         * @param from  the source data set
366         */
367        public void mergeFrom(final DataSet from, ProgressMonitor progressMonitor) {
368            final DataSetMerger visitor = new DataSetMerger(data,from);
369            try {
370                visitor.merge(progressMonitor);
371            } catch (DataIntegrityProblemException e) {
372                JOptionPane.showMessageDialog(
373                        Main.parent,
374                        e.getHtmlMessage() != null ? e.getHtmlMessage() : e.getMessage(),
375                        tr("Error"),
376                        JOptionPane.ERROR_MESSAGE
377                );
378                return;
379    
380            }
381    
382            Area a = data.getDataSourceArea();
383    
384            // copy the merged layer's data source info;
385            // only add source rectangles if they are not contained in the
386            // layer already.
387            for (DataSource src : from.dataSources) {
388                if (a == null || !a.contains(src.bounds.asRect())) {
389                    data.dataSources.add(src);
390                }
391            }
392    
393            // copy the merged layer's API version, downgrade if required
394            if (data.getVersion() == null) {
395                data.setVersion(from.getVersion());
396            } else if ("0.5".equals(data.getVersion()) ^ "0.5".equals(from.getVersion())) {
397                System.err.println(tr("Warning: mixing 0.6 and 0.5 data results in version 0.5"));
398                data.setVersion("0.5");
399            }
400    
401            int numNewConflicts = 0;
402            for (Conflict<?> c : visitor.getConflicts()) {
403                if (!conflicts.hasConflict(c)) {
404                    numNewConflicts++;
405                    conflicts.add(c);
406                }
407            }
408            // repaint to make sure new data is displayed properly.
409            Main.map.mapView.repaint();
410            warnNumNewConflicts(numNewConflicts);
411        }
412    
413        /**
414         * Warns the user about the number of detected conflicts
415         *
416         * @param numNewConflicts the number of detected conflicts
417         */
418        protected void warnNumNewConflicts(int numNewConflicts) {
419            if (numNewConflicts == 0) return;
420    
421            String msg1 = trn(
422                    "There was {0} conflict detected.",
423                    "There were {0} conflicts detected.",
424                    numNewConflicts,
425                    numNewConflicts
426            );
427    
428            final StringBuffer sb = new StringBuffer();
429            sb.append("<html>").append(msg1).append("</html>");
430            if (numNewConflicts > 0) {
431                final ButtonSpec[] options = new ButtonSpec[] {
432                        new ButtonSpec(
433                                tr("OK"),
434                                ImageProvider.get("ok"),
435                                tr("Click to close this dialog and continue editing"),
436                                null /* no specific help */
437                        )
438                };
439                GuiHelper.runInEDT(new Runnable() {
440                    @Override
441                    public void run() {
442                        HelpAwareOptionPane.showOptionDialog(
443                                Main.parent,
444                                sb.toString(),
445                                tr("Conflicts detected"),
446                                JOptionPane.WARNING_MESSAGE,
447                                null, /* no icon */
448                                options,
449                                options[0],
450                                ht("/Concepts/Conflict#WarningAboutDetectedConflicts")
451                        );
452                        Main.map.conflictDialog.unfurlDialog();
453                        Main.map.repaint();
454                    }
455                });
456            }
457        }
458    
459    
460        @Override public boolean isMergable(final Layer other) {
461            // isUploadDiscouraged commented to allow merging between normal layers and discouraged layers with a warning (see #7684) 
462            return other instanceof OsmDataLayer;// && (isUploadDiscouraged() == ((OsmDataLayer)other).isUploadDiscouraged());
463        }
464    
465        @Override public void visitBoundingBox(final BoundingXYVisitor v) {
466            for (final Node n: data.getNodes()) {
467                if (n.isUsable()) {
468                    v.visit(n);
469                }
470            }
471        }
472    
473        /**
474         * Clean out the data behind the layer. This means clearing the redo/undo lists,
475         * really deleting all deleted objects and reset the modified flags. This should
476         * be done after an upload, even after a partial upload.
477         *
478         * @param processed A list of all objects that were actually uploaded.
479         *         May be <code>null</code>, which means nothing has been uploaded
480         */
481        public void cleanupAfterUpload(final Collection<IPrimitive> processed) {
482            // return immediately if an upload attempt failed
483            if (processed == null || processed.isEmpty())
484                return;
485    
486            Main.main.undoRedo.clean(this);
487    
488            // if uploaded, clean the modified flags as well
489            data.cleanupDeletedPrimitives();
490            for (OsmPrimitive p: data.allPrimitives()) {
491                if (processed.contains(p)) {
492                    p.setModified(false);
493                }
494            }
495        }
496    
497    
498        @Override public Object getInfoComponent() {
499            final DataCountVisitor counter = new DataCountVisitor();
500            for (final OsmPrimitive osm : data.allPrimitives()) {
501                osm.visit(counter);
502            }
503            final JPanel p = new JPanel(new GridBagLayout());
504    
505            String nodeText = trn("{0} node", "{0} nodes", counter.nodes, counter.nodes);
506            if (counter.deletedNodes > 0) {
507                nodeText += " ("+trn("{0} deleted", "{0} deleted", counter.deletedNodes, counter.deletedNodes)+")";
508            }
509    
510            String wayText = trn("{0} way", "{0} ways", counter.ways, counter.ways);
511            if (counter.deletedWays > 0) {
512                wayText += " ("+trn("{0} deleted", "{0} deleted", counter.deletedWays, counter.deletedWays)+")";
513            }
514    
515            String relationText = trn("{0} relation", "{0} relations", counter.relations, counter.relations);
516            if (counter.deletedRelations > 0) {
517                relationText += " ("+trn("{0} deleted", "{0} deleted", counter.deletedRelations, counter.deletedRelations)+")";
518            }
519    
520            p.add(new JLabel(tr("{0} consists of:", getName())), GBC.eol());
521            p.add(new JLabel(nodeText, ImageProvider.get("data", "node"), JLabel.HORIZONTAL), GBC.eop().insets(15,0,0,0));
522            p.add(new JLabel(wayText, ImageProvider.get("data", "way"), JLabel.HORIZONTAL), GBC.eop().insets(15,0,0,0));
523            p.add(new JLabel(relationText, ImageProvider.get("data", "relation"), JLabel.HORIZONTAL), GBC.eop().insets(15,0,0,0));
524            p.add(new JLabel(tr("API version: {0}", (data.getVersion() != null) ? data.getVersion() : tr("unset"))), GBC.eop().insets(15,0,0,0));
525            if (isUploadDiscouraged()) {
526                p.add(new JLabel(tr("Upload is discouraged")), GBC.eop().insets(15,0,0,0));
527            }
528    
529            return p;
530        }
531    
532        @Override public Action[] getMenuEntries() {
533            if (Main.applet)
534                return new Action[]{
535                    LayerListDialog.getInstance().createActivateLayerAction(this),
536                    LayerListDialog.getInstance().createShowHideLayerAction(),
537                    LayerListDialog.getInstance().createDeleteLayerAction(),
538                    SeparatorLayerAction.INSTANCE,
539                    LayerListDialog.getInstance().createMergeLayerAction(this),
540                    SeparatorLayerAction.INSTANCE,
541                    new RenameLayerAction(getAssociatedFile(), this),
542                    new ConsistencyTestAction(),
543                    SeparatorLayerAction.INSTANCE,
544                    new LayerListPopup.InfoAction(this)};
545            ArrayList<Action> actions = new ArrayList<Action>();
546            actions.addAll(Arrays.asList(new Action[]{
547                    LayerListDialog.getInstance().createActivateLayerAction(this),
548                    LayerListDialog.getInstance().createShowHideLayerAction(),
549                    LayerListDialog.getInstance().createDeleteLayerAction(),
550                    SeparatorLayerAction.INSTANCE,
551                    LayerListDialog.getInstance().createMergeLayerAction(this),
552                    new LayerSaveAction(this),
553                    new LayerSaveAsAction(this),
554                    new LayerGpxExportAction(this),
555                    new ConvertToGpxLayerAction(),
556                    SeparatorLayerAction.INSTANCE,
557                    new RenameLayerAction(getAssociatedFile(), this)}));
558            if (ExpertToggleAction.isExpert() && Main.pref.getBoolean("data.layer.upload_discouragement.menu_item", false)) {
559                actions.add(new ToggleUploadDiscouragedLayerAction(this));
560            }
561            actions.addAll(Arrays.asList(new Action[]{
562                    new ConsistencyTestAction(),
563                    SeparatorLayerAction.INSTANCE,
564                    new LayerListPopup.InfoAction(this)}));
565            return actions.toArray(new Action[0]);
566        }
567    
568        public static GpxData toGpxData(DataSet data, File file) {
569            GpxData gpxData = new GpxData();
570            gpxData.storageFile = file;
571            HashSet<Node> doneNodes = new HashSet<Node>();
572            for (Way w : data.getWays()) {
573                if (!w.isUsable()) {
574                    continue;
575                }
576                Collection<Collection<WayPoint>> trk = new ArrayList<Collection<WayPoint>>();
577                Map<String, Object> trkAttr = new HashMap<String, Object>();
578    
579                if (w.get("name") != null) {
580                    trkAttr.put("name", w.get("name"));
581                }
582    
583                List<WayPoint> trkseg = null;
584                for (Node n : w.getNodes()) {
585                    if (!n.isUsable()) {
586                        trkseg = null;
587                        continue;
588                    }
589                    if (trkseg == null) {
590                        trkseg = new ArrayList<WayPoint>();
591                        trk.add(trkseg);
592                    }
593                    if (!n.isTagged()) {
594                        doneNodes.add(n);
595                    }
596                    WayPoint wpt = new WayPoint(n.getCoor());
597                    if (!n.isTimestampEmpty()) {
598                        wpt.attr.put("time", DateUtils.fromDate(n.getTimestamp()));
599                        wpt.setTime();
600                    }
601                    trkseg.add(wpt);
602                }
603    
604                gpxData.tracks.add(new ImmutableGpxTrack(trk, trkAttr));
605            }
606    
607            for (Node n : data.getNodes()) {
608                if (n.isIncomplete() || n.isDeleted() || doneNodes.contains(n)) {
609                    continue;
610                }
611                String name = n.get("name");
612                if (name == null) {
613                    continue;
614                }
615                WayPoint wpt = new WayPoint(n.getCoor());
616                wpt.attr.put("name", name);
617                if (!n.isTimestampEmpty()) {
618                    wpt.attr.put("time", DateUtils.fromDate(n.getTimestamp()));
619                    wpt.setTime();
620                }
621                String desc = n.get("description");
622                if (desc != null) {
623                    wpt.attr.put("desc", desc);
624                }
625    
626                gpxData.waypoints.add(wpt);
627            }
628            return gpxData;
629        }
630    
631        public GpxData toGpxData() {
632            return toGpxData(data, getAssociatedFile());
633        }
634    
635        public class ConvertToGpxLayerAction extends AbstractAction {
636            public ConvertToGpxLayerAction() {
637                super(tr("Convert to GPX layer"), ImageProvider.get("converttogpx"));
638                putValue("help", ht("/Action/ConvertToGpxLayer"));
639            }
640            public void actionPerformed(ActionEvent e) {
641                Main.main.addLayer(new GpxLayer(toGpxData(), tr("Converted from: {0}", getName())));
642                Main.main.removeLayer(OsmDataLayer.this);
643            }
644        }
645    
646        public boolean containsPoint(LatLon coor) {
647            // we'll assume that if this has no data sources
648            // that it also has no borders
649            if (this.data.dataSources.isEmpty())
650                return true;
651    
652            boolean layer_bounds_point = false;
653            for (DataSource src : this.data.dataSources) {
654                if (src.bounds.contains(coor)) {
655                    layer_bounds_point = true;
656                    break;
657                }
658            }
659            return layer_bounds_point;
660        }
661    
662        /**
663         * replies the set of conflicts currently managed in this layer
664         *
665         * @return the set of conflicts currently managed in this layer
666         */
667        public ConflictCollection getConflicts() {
668            return conflicts;
669        }
670    
671        /**
672         * Replies true if the data managed by this layer needs to be uploaded to
673         * the server because it contains at least one modified primitive.
674         *
675         * @return true if the data managed by this layer needs to be uploaded to
676         * the server because it contains at least one modified primitive; false,
677         * otherwise
678         */
679        public boolean requiresUploadToServer() {
680            return requiresUploadToServer;
681        }
682    
683        /**
684         * Replies true if the data managed by this layer needs to be saved to
685         * a file. Only replies true if a file is assigned to this layer and
686         * if the data managed by this layer has been modified since the last
687         * save operation to the file.
688         *
689         * @return true if the data managed by this layer needs to be saved to
690         * a file
691         */
692        public boolean requiresSaveToFile() {
693            return getAssociatedFile() != null && requiresSaveToFile;
694        }
695    
696        @Override
697        public void onPostLoadFromFile() {
698            setRequiresSaveToFile(false);
699            setRequiresUploadToServer(data.isModified());
700        }
701    
702        public void onPostDownloadFromServer() {
703            setRequiresSaveToFile(true);
704            setRequiresUploadToServer(data.isModified());
705        }
706    
707        @Override
708        public boolean isChanged() {
709            return isChanged || highlightUpdateCount != data.getHighlightUpdateCount();
710        }
711    
712        /**
713         * Initializes the layer after a successful save of OSM data to a file
714         *
715         */
716        public void onPostSaveToFile() {
717            setRequiresSaveToFile(false);
718            setRequiresUploadToServer(data.isModified());
719        }
720    
721        /**
722         * Initializes the layer after a successful upload to the server
723         *
724         */
725        public void onPostUploadToServer() {
726            setRequiresUploadToServer(data.isModified());
727            // keep requiresSaveToDisk unchanged
728        }
729    
730        private class ConsistencyTestAction extends AbstractAction {
731    
732            public ConsistencyTestAction() {
733                super(tr("Dataset consistency test"));
734            }
735    
736            public void actionPerformed(ActionEvent e) {
737                String result = DatasetConsistencyTest.runTests(data);
738                if (result.length() == 0) {
739                    JOptionPane.showMessageDialog(Main.parent, tr("No problems found"));
740                } else {
741                    JPanel p = new JPanel(new GridBagLayout());
742                    p.add(new JLabel(tr("Following problems found:")), GBC.eol());
743                    JTextArea info = new JTextArea(result, 20, 60);
744                    info.setCaretPosition(0);
745                    info.setEditable(false);
746                    p.add(new JScrollPane(info), GBC.eop());
747    
748                    JOptionPane.showMessageDialog(Main.parent, p, tr("Warning"), JOptionPane.WARNING_MESSAGE);
749                }
750            }
751        }
752    
753        @Override
754        public void destroy() {
755            DataSet.removeSelectionListener(this);
756        }
757    
758        public void processDatasetEvent(AbstractDatasetChangedEvent event) {
759            isChanged = true;
760            setRequiresSaveToFile(true);
761            setRequiresUploadToServer(true);
762        }
763    
764        public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
765            isChanged = true;
766        }
767    
768        @Override
769        public void projectionChanged(Projection oldValue, Projection newValue) {
770            /*
771             * No reprojection required. The dataset itself is registered as projection
772             * change listener and already got notified.
773             */
774        }
775    
776        public final boolean isUploadDiscouraged() {
777            return data.isUploadDiscouraged();
778        }
779    
780        public final void setUploadDiscouraged(boolean uploadDiscouraged) {
781            if (uploadDiscouraged ^ isUploadDiscouraged()) {
782                data.setUploadDiscouraged(uploadDiscouraged);
783                for (LayerStateChangeListener l : layerStateChangeListeners) {
784                    l.uploadDiscouragedChanged(this, uploadDiscouraged);
785                }
786            }
787        }
788    
789        @Override
790        public boolean isSavable() {
791            return true; // With OsmExporter
792        }
793    
794        @Override
795        public boolean checkSaveConditions() {
796            if (isDataSetEmpty()) {
797                ExtendedDialog dialog = new ExtendedDialog(
798                        Main.parent,
799                        tr("Empty document"),
800                        new String[] {tr("Save anyway"), tr("Cancel")}
801                );
802                dialog.setContent(tr("The document contains no data."));
803                dialog.setButtonIcons(new String[] {"save.png", "cancel.png"});
804                dialog.showDialog();
805                if (dialog.getValue() != 1) return false;
806            }
807    
808            ConflictCollection conflicts = getConflicts();
809            if (conflicts != null && !conflicts.isEmpty()) {
810                ExtendedDialog dialog = new ExtendedDialog(
811                        Main.parent,
812                        /* I18N: Display title of the window showing conflicts */
813                        tr("Conflicts"),
814                        new String[] {tr("Reject Conflicts and Save"), tr("Cancel")}
815                );
816                dialog.setContent(tr("There are unresolved conflicts. Conflicts will not be saved and handled as if you rejected all. Continue?"));
817                dialog.setButtonIcons(new String[] {"save.png", "cancel.png"});
818                dialog.showDialog();
819                if (dialog.getValue() != 1) return false;
820            }
821            return true;
822        }
823        
824        /**
825         * Check the data set if it would be empty on save. It is empty, if it contains
826         * no objects (after all objects that are created and deleted without being
827         * transferred to the server have been removed).
828         *
829         * @return <code>true</code>, if a save result in an empty data set.
830         */
831        private boolean isDataSetEmpty() {
832            if (data != null) {
833                for (OsmPrimitive osm : data.allNonDeletedPrimitives())
834                    if (!osm.isDeleted() || !osm.isNewOrUndeleted())
835                        return false;
836            }
837            return true;
838        }
839    
840        @Override
841        public File createAndOpenSaveFileChooser() {
842            return SaveActionBase.createAndOpenSaveFileChooser(tr("Save OSM file"), "osm");
843        }
844    }