source: josm/trunk/src/org/openstreetmap/josm/gui/MapView.java@ 4339

Last change on this file since 4339 was 4244, checked in by stoecker, 13 years ago

zoom to layer also when loading NMEA files
  • Property svn:eol-style set to native
File size: 28.0 KB
Line 
1// License: GPL. See LICENSE file for details.
2package org.openstreetmap.josm.gui;
3
4import static org.openstreetmap.josm.tools.I18n.tr;
5
6import java.awt.AlphaComposite;
7import java.awt.Color;
8import java.awt.Graphics;
9import java.awt.Graphics2D;
10import java.awt.Point;
11import java.awt.Rectangle;
12import java.awt.event.ComponentAdapter;
13import java.awt.event.ComponentEvent;
14import java.awt.event.MouseEvent;
15import java.awt.event.MouseMotionListener;
16import java.awt.geom.Area;
17import java.awt.geom.GeneralPath;
18import java.awt.image.BufferedImage;
19import java.beans.PropertyChangeEvent;
20import java.beans.PropertyChangeListener;
21import java.util.ArrayList;
22import java.util.Collection;
23import java.util.Collections;
24import java.util.Comparator;
25import java.util.Enumeration;
26import java.util.LinkedList;
27import java.util.List;
28import java.util.concurrent.CopyOnWriteArrayList;
29
30import javax.swing.AbstractButton;
31import javax.swing.JOptionPane;
32import javax.swing.JPanel;
33
34import org.openstreetmap.josm.Main;
35import org.openstreetmap.josm.actions.AutoScaleAction;
36import org.openstreetmap.josm.actions.mapmode.MapMode;
37import org.openstreetmap.josm.data.Bounds;
38import org.openstreetmap.josm.data.Preferences.PreferenceChangeEvent;
39import org.openstreetmap.josm.data.Preferences.PreferenceChangedListener;
40import org.openstreetmap.josm.data.SelectionChangedListener;
41import org.openstreetmap.josm.data.coor.LatLon;
42import org.openstreetmap.josm.data.osm.DataSet;
43import org.openstreetmap.josm.data.osm.DataSource;
44import org.openstreetmap.josm.data.osm.OsmPrimitive;
45import org.openstreetmap.josm.data.osm.visitor.BoundingXYVisitor;
46import org.openstreetmap.josm.data.osm.visitor.paint.PaintColors;
47import org.openstreetmap.josm.gui.layer.GpxLayer;
48import org.openstreetmap.josm.gui.layer.Layer;
49import org.openstreetmap.josm.gui.layer.MapViewPaintable;
50import org.openstreetmap.josm.gui.layer.OsmDataLayer;
51import org.openstreetmap.josm.gui.layer.markerlayer.MarkerLayer;
52import org.openstreetmap.josm.gui.layer.markerlayer.PlayHeadMarker;
53import org.openstreetmap.josm.tools.AudioPlayer;
54import org.openstreetmap.josm.tools.BugReportExceptionHandler;
55
56/**
57 * This is a component used in the MapFrame for browsing the map. It use is to
58 * provide the MapMode's enough capabilities to operate.
59 *
60 * MapView hold meta-data about the data set currently displayed, as scale level,
61 * center point viewed, what scrolling mode or editing mode is selected or with
62 * what projection the map is viewed etc..
63 *
64 * MapView is able to administrate several layers.
65 *
66 * @author imi
67 */
68public class MapView extends NavigatableComponent implements PropertyChangeListener, PreferenceChangedListener {
69
70 /**
71 * Interface to notify listeners of the change of the active layer.
72 * @author imi
73 */
74 public interface LayerChangeListener {
75 void activeLayerChange(Layer oldLayer, Layer newLayer);
76 void layerAdded(Layer newLayer);
77 void layerRemoved(Layer oldLayer);
78 }
79
80 public interface EditLayerChangeListener {
81 void editLayerChanged(OsmDataLayer oldLayer, OsmDataLayer newLayer);
82 }
83
84 public boolean viewportFollowing = false;
85
86 /**
87 * the layer listeners
88 */
89 private static final CopyOnWriteArrayList<MapView.LayerChangeListener> layerChangeListeners = new CopyOnWriteArrayList<MapView.LayerChangeListener>();
90 private static final CopyOnWriteArrayList<EditLayerChangeListener> editLayerChangeListeners = new CopyOnWriteArrayList<EditLayerChangeListener>();
91
92 /**
93 * Removes a layer change listener
94 *
95 * @param listener the listener. Ignored if null or already registered.
96 */
97 public static void removeLayerChangeListener(MapView.LayerChangeListener listener) {
98 layerChangeListeners.remove(listener);
99 }
100
101 public static void removeEditLayerChangeListener(EditLayerChangeListener listener) {
102 editLayerChangeListeners.remove(listener);
103 }
104
105 /**
106 * Adds a layer change listener
107 *
108 * @param listener the listener. Ignored if null or already registered.
109 */
110 public static void addLayerChangeListener(MapView.LayerChangeListener listener) {
111 if (listener != null) {
112 layerChangeListeners.addIfAbsent(listener);
113 }
114 }
115
116 /**
117 * Adds an edit layer change listener
118 *
119 * @param listener the listener. Ignored if null or already registered.
120 * @param initialFire Fire an edit-layer-changed-event right after adding
121 * the listener in case there is an edit layer present
122 */
123 public static void addEditLayerChangeListener(EditLayerChangeListener listener, boolean initialFire) {
124 addEditLayerChangeListener(listener);
125 if (initialFire) {
126 if (Main.map != null && Main.map.mapView != null && Main.map.mapView.getEditLayer() != null) {
127 fireEditLayerChanged(null, Main.map.mapView.getEditLayer());
128 }
129 }
130 }
131
132 public static void addEditLayerChangeListener(EditLayerChangeListener listener) {
133 if (listener != null) {
134 editLayerChangeListeners.addIfAbsent(listener);
135 }
136 }
137
138 protected static void fireActiveLayerChanged(Layer oldLayer, Layer newLayer) {
139 for (LayerChangeListener l : layerChangeListeners) {
140 l.activeLayerChange(oldLayer, newLayer);
141 }
142 }
143
144 protected static void fireLayerAdded(Layer newLayer) {
145 for (MapView.LayerChangeListener l : MapView.layerChangeListeners) {
146 l.layerAdded(newLayer);
147 }
148 }
149
150 protected static void fireLayerRemoved(Layer layer) {
151 for (MapView.LayerChangeListener l : MapView.layerChangeListeners) {
152 l.layerRemoved(layer);
153 }
154 }
155
156 protected static void fireEditLayerChanged(OsmDataLayer oldLayer, OsmDataLayer newLayer) {
157 for (EditLayerChangeListener l : editLayerChangeListeners) {
158 l.editLayerChanged(oldLayer, newLayer);
159 }
160 }
161
162 /**
163 * A list of all layers currently loaded.
164 */
165 private final List<Layer> layers = new ArrayList<Layer>();
166 /**
167 * The play head marker: there is only one of these so it isn't in any specific layer
168 */
169 public PlayHeadMarker playHeadMarker = null;
170
171 /**
172 * The layer from the layers list that is currently active.
173 */
174 private Layer activeLayer;
175
176 private OsmDataLayer editLayer;
177
178 /**
179 * The last event performed by mouse.
180 */
181 public MouseEvent lastMEvent = new MouseEvent(this, 0, 0, 0, 0, 0, 0, false); // In case somebody reads it before first mouse move
182
183 private LinkedList<MapViewPaintable> temporaryLayers = new LinkedList<MapViewPaintable>();
184
185 private BufferedImage nonChangedLayersBuffer;
186 private BufferedImage offscreenBuffer;
187 // Layers that wasn't changed since last paint
188 private final List<Layer> nonChangedLayers = new ArrayList<Layer>();
189 private Layer changedLayer;
190 private int lastViewID;
191 private boolean paintPreferencesChanged = true;
192 private Rectangle lastClipBounds = new Rectangle();
193
194 public MapView(final JPanel contentPane) {
195 Main.pref.addPreferenceChangeListener(this);
196
197 // new MoveAction(MoveAction.Direction.UP);
198 // new MoveAction(MoveAction.Direction.DOWN);
199 // new MoveAction(MoveAction.Direction.LEFT);
200 // new MoveAction(MoveAction.Direction.RIGHT);
201
202 addComponentListener(new ComponentAdapter(){
203 @Override public void componentResized(ComponentEvent e) {
204 removeComponentListener(this);
205
206 MapSlider zoomSlider = new MapSlider(MapView.this);
207 add(zoomSlider);
208 zoomSlider.setBounds(3, 0, 114, 30);
209
210 MapScaler scaler = new MapScaler(MapView.this);
211 add(scaler);
212 scaler.setLocation(10,30);
213
214 new MapMover(MapView.this, contentPane);
215 OsmDataLayer layer = getEditLayer();
216 if (layer != null) {
217 if (!zoomToDataSetBoundingBox(layer.data)) {
218 // no bounding box defined
219 AutoScaleAction.autoScale("data");
220 }
221 } else {
222 AutoScaleAction.autoScale("layer");
223 }
224 }
225 });
226
227 // listend to selection changes to redraw the map
228 DataSet.addSelectionListener(repaintSelectionChangedListener);
229
230 //store the last mouse action
231 this.addMouseMotionListener(new MouseMotionListener() {
232 public void mouseDragged(MouseEvent e) {
233 mouseMoved(e);
234 }
235 public void mouseMoved(MouseEvent e) {
236 lastMEvent = e;
237 }
238 });
239 }
240
241 /**
242 * Adds a GPX layer. A GPX layer is added below the lowest data layer.
243 *
244 * @param layer the GPX layer
245 */
246 protected void addGpxLayer(GpxLayer layer) {
247 if (layers.isEmpty()) {
248 layers.add(layer);
249 return;
250 }
251 for (int i=layers.size()-1; i>= 0; i--) {
252 if (layers.get(i) instanceof OsmDataLayer) {
253 if (i == layers.size()-1) {
254 layers.add(layer);
255 } else {
256 layers.add(i+1, layer);
257 }
258 return;
259 }
260 }
261 layers.add(0, layer);
262 }
263
264 /**
265 * Add a layer to the current MapView. The layer will be added at topmost
266 * position.
267 */
268 public void addLayer(Layer layer) {
269 if (layer instanceof MarkerLayer && playHeadMarker == null) {
270 playHeadMarker = PlayHeadMarker.create();
271 }
272
273 if (layer instanceof GpxLayer) {
274 addGpxLayer((GpxLayer)layer);
275 } else if (layer.isBackgroundLayer() || layers.isEmpty()) {
276 layers.add(layer);
277 } else {
278 layers.add(0, layer);
279 }
280 fireLayerAdded(layer);
281 if (layer instanceof OsmDataLayer || activeLayer == null) {
282 // autoselect the new layer
283 setActiveLayer(layer);
284 }
285 layer.addPropertyChangeListener(this);
286 Main.addProjectionChangeListener(layer);
287 AudioPlayer.reset();
288 repaint();
289 }
290
291 @Override
292 protected DataSet getCurrentDataSet() {
293 if (editLayer != null)
294 return editLayer.data;
295 else
296 return null;
297 }
298
299 /**
300 * Replies true if the active layer is drawable.
301 *
302 * @return true if the active layer is drawable, false otherwise
303 */
304 public boolean isActiveLayerDrawable() {
305 return editLayer != null;
306 }
307
308 /**
309 * Replies true if the active layer is visible.
310 *
311 * @return true if the active layer is visible, false otherwise
312 */
313 public boolean isActiveLayerVisible() {
314 return isActiveLayerDrawable() && editLayer.isVisible();
315 }
316
317 /**
318 * Determines the next active data layer according to the following
319 * rules:
320 * <ul>
321 * <li>if there is at least one {@see OsmDataLayer} the first one
322 * becomes active</li>
323 * <li>otherwise, the top most layer of any type becomes active</li>
324 * </ul>
325 *
326 * @return the next active data layer
327 */
328 protected Layer determineNextActiveLayer(List<Layer> layersList) {
329 // First look for data layer
330 for (Layer layer:layersList) {
331 if (layer instanceof OsmDataLayer)
332 return layer;
333 }
334
335 // Then any layer
336 if (!layersList.isEmpty())
337 return layersList.get(0);
338
339 // and then give up
340 return null;
341
342 }
343
344 /**
345 * Remove the layer from the mapview. If the layer was in the list before,
346 * an LayerChange event is fired.
347 */
348 public void removeLayer(Layer layer) {
349 List<Layer> layersList = new ArrayList<Layer>(layers);
350
351 if (!layersList.remove(layer))
352 return;
353
354 setEditLayer(layersList);
355
356 if (layer == activeLayer) {
357 setActiveLayer(determineNextActiveLayer(layersList), false);
358 }
359
360 layers.remove(layer);
361 Main.removeProjectionChangeListener(layer);
362 fireLayerRemoved(layer);
363 layer.removePropertyChangeListener(this);
364 layer.destroy();
365 AudioPlayer.reset();
366 repaint();
367 }
368
369 private boolean virtualNodesEnabled = false;
370
371 public void setVirtualNodesEnabled(boolean enabled) {
372 if(virtualNodesEnabled != enabled) {
373 virtualNodesEnabled = enabled;
374 repaint();
375 }
376 }
377 public boolean isVirtualNodesEnabled() {
378 return virtualNodesEnabled;
379 }
380
381 /**
382 * Moves the layer to the given new position. No event is fired, but repaints
383 * according to the new Z-Order of the layers.
384 *
385 * @param layer The layer to move
386 * @param pos The new position of the layer
387 */
388 public void moveLayer(Layer layer, int pos) {
389 int curLayerPos = layers.indexOf(layer);
390 if (curLayerPos == -1)
391 throw new IllegalArgumentException(tr("Layer not in list."));
392 if (pos == curLayerPos)
393 return; // already in place.
394 layers.remove(curLayerPos);
395 if (pos >= layers.size()) {
396 layers.add(layer);
397 } else {
398 layers.add(pos, layer);
399 }
400 setEditLayer(layers);
401 AudioPlayer.reset();
402 repaint();
403 }
404
405 public int getLayerPos(Layer layer) {
406 int curLayerPos = layers.indexOf(layer);
407 if (curLayerPos == -1)
408 throw new IllegalArgumentException(tr("Layer not in list."));
409 return curLayerPos;
410 }
411
412 /**
413 * Creates a list of the visible layers in Z-Order, the layer with the lowest Z-Order
414 * first, layer with the highest Z-Order last.
415 *
416 * @return a list of the visible in Z-Order, the layer with the lowest Z-Order
417 * first, layer with the highest Z-Order last.
418 */
419 protected List<Layer> getVisibleLayersInZOrder() {
420 ArrayList<Layer> ret = new ArrayList<Layer>();
421 for (Layer l: layers) {
422 if (l.isVisible()) {
423 ret.add(l);
424 }
425 }
426 // sort according to position in the list of layers, with one exception:
427 // an active data layer always becomes a higher Z-Order than all other
428 // data layers
429 //
430 Collections.sort(
431 ret,
432 new Comparator<Layer>() {
433 public int compare(Layer l1, Layer l2) {
434 if (l1 instanceof OsmDataLayer && l2 instanceof OsmDataLayer) {
435 if (l1 == getActiveLayer()) return -1;
436 if (l2 == getActiveLayer()) return 1;
437 return Integer.valueOf(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
438 } else
439 return Integer.valueOf(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
440 }
441 }
442 );
443 Collections.reverse(ret);
444 return ret;
445 }
446
447 private void paintLayer(Layer layer, Graphics2D g, Bounds box) {
448 if (layer.getOpacity() < 1) {
449 g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,(float)layer.getOpacity()));
450 }
451 layer.paint(g, this, box);
452 g.setPaintMode();
453 }
454
455 /**
456 * Draw the component.
457 */
458 @Override public void paint(Graphics g) {
459 if (BugReportExceptionHandler.exceptionHandlingInProgress())
460 return;
461
462 if (center == null)
463 return; // no data loaded yet.
464
465 List<Layer> visibleLayers = getVisibleLayersInZOrder();
466
467 int nonChangedLayersCount = 0;
468 for (Layer l: visibleLayers) {
469 if (l.isChanged() || l == changedLayer) {
470 break;
471 } else {
472 nonChangedLayersCount++;
473 }
474 }
475
476 boolean canUseBuffer = !paintPreferencesChanged && nonChangedLayers.size() <= nonChangedLayersCount &&
477 lastViewID == getViewID() && lastClipBounds.contains(g.getClipBounds());
478 if (canUseBuffer) {
479 for (int i=0; i<nonChangedLayers.size(); i++) {
480 if (visibleLayers.get(i) != nonChangedLayers.get(i)) {
481 canUseBuffer = false;
482 break;
483 }
484 }
485 }
486
487 if (null == offscreenBuffer || offscreenBuffer.getWidth() != getWidth() || offscreenBuffer.getHeight() != getHeight()) {
488 offscreenBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR);
489 }
490
491 Graphics2D tempG = offscreenBuffer.createGraphics();
492 tempG.setClip(g.getClip());
493 Bounds box = getLatLonBounds(g.getClipBounds());
494
495 if (!canUseBuffer || nonChangedLayersBuffer == null) {
496 if (null == nonChangedLayersBuffer || nonChangedLayersBuffer.getWidth() != getWidth() || nonChangedLayersBuffer.getHeight() != getHeight()) {
497 nonChangedLayersBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR);
498 }
499 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
500 g2.setClip(g.getClip());
501 g2.setColor(PaintColors.getBackgroundColor());
502 g2.fillRect(0, 0, getWidth(), getHeight());
503
504 for (int i=0; i<nonChangedLayersCount; i++) {
505 paintLayer(visibleLayers.get(i),g2, box);
506 }
507 } else {
508 // Maybe there were more unchanged layers then last time - draw them to buffer
509 if (nonChangedLayers.size() != nonChangedLayersCount) {
510 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
511 g2.setClip(g.getClip());
512 for (int i=nonChangedLayers.size(); i<nonChangedLayersCount; i++) {
513 paintLayer(visibleLayers.get(i),g2, box);
514 }
515 }
516 }
517
518 nonChangedLayers.clear();
519 changedLayer = null;
520 for (int i=0; i<nonChangedLayersCount; i++) {
521 nonChangedLayers.add(visibleLayers.get(i));
522 }
523 lastViewID = getViewID();
524 paintPreferencesChanged = false;
525 lastClipBounds = g.getClipBounds();
526
527 tempG.drawImage(nonChangedLayersBuffer, 0, 0, null);
528
529 for (int i=nonChangedLayersCount; i<visibleLayers.size(); i++) {
530 paintLayer(visibleLayers.get(i),tempG, box);
531 }
532
533 for (MapViewPaintable mvp : temporaryLayers) {
534 mvp.paint(tempG, this, box);
535 }
536
537 // draw world borders
538 tempG.setColor(Color.WHITE);
539 Bounds b = getProjection().getWorldBoundsLatLon();
540 double lat = b.getMin().lat();
541 double lon = b.getMin().lon();
542
543 Point p = getPoint(b.getMin());
544
545 GeneralPath path = new GeneralPath();
546
547 path.moveTo(p.x, p.y);
548 double max = b.getMax().lat();
549 for(; lat <= max; lat += 1.0)
550 {
551 p = getPoint(new LatLon(lat >= max ? max : lat, lon));
552 path.lineTo(p.x, p.y);
553 }
554 lat = max; max = b.getMax().lon();
555 for(; lon <= max; lon += 1.0)
556 {
557 p = getPoint(new LatLon(lat, lon >= max ? max : lon));
558 path.lineTo(p.x, p.y);
559 }
560 lon = max; max = b.getMin().lat();
561 for(; lat >= max; lat -= 1.0)
562 {
563 p = getPoint(new LatLon(lat <= max ? max : lat, lon));
564 path.lineTo(p.x, p.y);
565 }
566 lat = max; max = b.getMin().lon();
567 for(; lon >= max; lon -= 1.0)
568 {
569 p = getPoint(new LatLon(lat, lon <= max ? max : lon));
570 path.lineTo(p.x, p.y);
571 }
572
573 int w = getWidth();
574 int h = getHeight();
575
576 // Work around OpenJDK having problems when drawing out of bounds
577 final Area border = new Area(path);
578 // Make the viewport 1px larger in every direction to prevent an
579 // additional 1px border when zooming in
580 final Area viewport = new Area(new Rectangle(-1, -1, w + 2, h + 2));
581 border.intersect(viewport);
582 tempG.draw(border);
583
584 if (Main.map.filterDialog != null) {
585 Main.map.filterDialog.drawOSDText(tempG);
586 }
587
588 if (playHeadMarker != null) {
589 playHeadMarker.paint(tempG, this);
590 }
591
592 g.drawImage(offscreenBuffer, 0, 0, null);
593 super.paint(g);
594 }
595
596 /**
597 * Set the new dimension to the view.
598 */
599 public void recalculateCenterScale(BoundingXYVisitor box) {
600 if (box == null) {
601 box = new BoundingXYVisitor();
602 }
603 if (box.getBounds() == null) {
604 box.visit(getProjection().getWorldBoundsLatLon());
605 }
606 if (!box.hasExtend()) {
607 box.enlargeBoundingBox();
608 }
609
610 zoomTo(box.getBounds());
611 }
612
613 /**
614 * @return An unmodifiable collection of all layers
615 */
616 public Collection<Layer> getAllLayers() {
617 return Collections.unmodifiableCollection(layers);
618 }
619
620 /**
621 * @return An unmodifiable ordered list of all layers
622 */
623 public List<Layer> getAllLayersAsList() {
624 return Collections.unmodifiableList(layers);
625 }
626
627 /**
628 * Replies an unmodifiable list of layers of a certain type.
629 *
630 * Example:
631 * <pre>
632 * List<WMSLayer> wmsLayers = getLayersOfType(WMSLayer.class);
633 * </pre>
634 *
635 * @return an unmodifiable list of layers of a certain type.
636 */
637 public <T> List<T> getLayersOfType(Class<T> ofType) {
638 ArrayList<T> ret = new ArrayList<T>();
639 for (Layer layer : getAllLayersAsList()) {
640 if (ofType.isInstance(layer)) {
641 ret.add(ofType.cast(layer));
642 }
643 }
644 return ret;
645 }
646
647 /**
648 * Replies the number of layers managed by this mav view
649 *
650 * @return the number of layers managed by this mav view
651 */
652 public int getNumLayers() {
653 return layers.size();
654 }
655
656 /**
657 * Replies true if there is at least one layer in this map view
658 *
659 * @return true if there is at least one layer in this map view
660 */
661 public boolean hasLayers() {
662 return getNumLayers() > 0;
663 }
664
665 private void setEditLayer(List<Layer> layersList) {
666 OsmDataLayer newEditLayer = layersList.contains(editLayer)?editLayer:null;
667 OsmDataLayer oldEditLayer = editLayer;
668
669 // Find new edit layer
670 if (activeLayer != editLayer || !layersList.contains(editLayer)) {
671 if (activeLayer instanceof OsmDataLayer && layersList.contains(activeLayer)) {
672 newEditLayer = (OsmDataLayer) activeLayer;
673 } else {
674 for (Layer layer:layersList) {
675 if (layer instanceof OsmDataLayer) {
676 newEditLayer = (OsmDataLayer) layer;
677 break;
678 }
679 }
680 }
681 }
682
683 // Set new edit layer
684 if (newEditLayer != editLayer) {
685 if (newEditLayer == null) {
686 getCurrentDataSet().setSelected();
687 }
688
689 editLayer = newEditLayer;
690 fireEditLayerChanged(oldEditLayer, newEditLayer);
691 refreshTitle();
692 }
693
694 }
695
696 /**
697 * Sets the active layer to <code>layer</code>. If <code>layer</code> is an instance
698 * of {@see OsmDataLayer} also sets {@see #editLayer} to <code>layer</code>.
699 *
700 * @param layer the layer to be activate; must be one of the layers in the list of layers
701 * @exception IllegalArgumentException thrown if layer is not in the lis of layers
702 */
703 public void setActiveLayer(Layer layer) {
704 setActiveLayer(layer, true);
705 }
706
707 private void setActiveLayer(Layer layer, boolean setEditLayer) {
708 if (layer != null && !layers.contains(layer))
709 throw new IllegalArgumentException(tr("Layer ''{0}'' must be in list of layers", layer.toString()));
710
711 if (layer == activeLayer)
712 return;
713
714 Layer old = activeLayer;
715 activeLayer = layer;
716 if (setEditLayer) {
717 setEditLayer(layers);
718 }
719 fireActiveLayerChanged(old, layer);
720
721 /* This only makes the buttons look disabled. Disabling the actions as well requires
722 * the user to re-select the tool after i.e. moving a layer. While testing I found
723 * that I switch layers and actions at the same time and it was annoying to mind the
724 * order. This way it works as visual clue for new users */
725 for (Enumeration<AbstractButton> e = Main.map.toolGroup.getElements() ; e.hasMoreElements() ;) {
726 AbstractButton x=e.nextElement();
727 x.setEnabled(((MapMode)x.getAction()).layerIsSupported(layer));
728 }
729 AudioPlayer.reset();
730 repaint();
731 }
732
733 /**
734 * Replies the currently active layer
735 *
736 * @return the currently active layer (may be null)
737 */
738 public Layer getActiveLayer() {
739 return activeLayer;
740 }
741
742 /**
743 * Replies the current edit layer, if any
744 *
745 * @return the current edit layer. May be null.
746 */
747 public OsmDataLayer getEditLayer() {
748 return editLayer;
749 }
750
751 /**
752 * replies true if the list of layers managed by this map view contain layer
753 *
754 * @param layer the layer
755 * @return true if the list of layers managed by this map view contain layer
756 */
757 public boolean hasLayer(Layer layer) {
758 return layers.contains(layer);
759 }
760
761 /**
762 * Tries to zoom to the download boundingbox[es] of the current edit layer
763 * (aka {@link OsmDataLayer}). If the edit layer has multiple download bounding
764 * boxes it zooms to a large virtual bounding box containing all smaller ones.
765 *
766 * @return <code>true</code> if a zoom operation has been performed
767 */
768 public boolean zoomToDataSetBoundingBox(DataSet ds) {
769 // In case we already have an existing data layer ...
770 OsmDataLayer layer= getEditLayer();
771 if (layer == null)
772 return false;
773 Collection<DataSource> dataSources = ds.dataSources;
774 // ... with bounding box[es] of data loaded from OSM or a file...
775 BoundingXYVisitor bbox = new BoundingXYVisitor();
776 for (DataSource source : dataSources) {
777 bbox.visit(source.bounds);
778 }
779 if (bbox.hasExtend()) {
780 // ... we zoom to it's bounding box
781 recalculateCenterScale(bbox);
782 return true;
783 }
784 return false;
785 }
786
787 public boolean addTemporaryLayer(MapViewPaintable mvp) {
788 if (temporaryLayers.contains(mvp)) return false;
789 return temporaryLayers.add(mvp);
790 }
791
792 public boolean removeTemporaryLayer(MapViewPaintable mvp) {
793 return temporaryLayers.remove(mvp);
794 }
795
796 public void propertyChange(PropertyChangeEvent evt) {
797 if (evt.getPropertyName().equals(Layer.VISIBLE_PROP)) {
798 repaint();
799 } else if (evt.getPropertyName().equals(Layer.OPACITY_PROP)) {
800 Layer l = (Layer)evt.getSource();
801 if (l.isVisible()) {
802 changedLayer = l;
803 repaint();
804 }
805 } else if (evt.getPropertyName().equals(OsmDataLayer.REQUIRES_SAVE_TO_DISK_PROP)
806 || evt.getPropertyName().equals(OsmDataLayer.REQUIRES_UPLOAD_TO_SERVER_PROP)) {
807 OsmDataLayer layer = (OsmDataLayer)evt.getSource();
808 if (layer == getEditLayer()) {
809 refreshTitle();
810 }
811 }
812 }
813
814 protected void refreshTitle() {
815 boolean dirty = editLayer != null && (editLayer.requiresSaveToFile() || editLayer.requiresUploadToServer());
816 if (dirty) {
817 JOptionPane.getFrameForComponent(Main.parent).setTitle("* " + tr("Java OpenStreetMap Editor"));
818 } else {
819 JOptionPane.getFrameForComponent(Main.parent).setTitle(tr("Java OpenStreetMap Editor"));
820 }
821 }
822
823 public void preferenceChanged(PreferenceChangeEvent e) {
824 paintPreferencesChanged = true;
825 }
826
827 private SelectionChangedListener repaintSelectionChangedListener = new SelectionChangedListener(){
828 public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
829 repaint();
830 }
831 };
832
833 public void destroy() {
834 Main.pref.removePreferenceChangeListener(this);
835 DataSet.removeSelectionListener(repaintSelectionChangedListener);
836 }
837
838}
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