source: josm/trunk/src/org/openstreetmap/josm/gui/MapView.java@ 4067

Last change on this file since 4067 was 3896, checked in by bastiK, 13 years ago

allow a stylesource to override the background color. This may not be the ideal solution yet, but has to do for now.
  • Property svn:eol-style set to native
File size: 27.9 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 OsmDataLayer layer = getEditLayer();
215 if (layer != null) {
216 if (!zoomToDataSetBoundingBox(layer.data)) {
217 // no bounding box defined
218 AutoScaleAction.autoScale("data");
219 }
220 } else {
221 AutoScaleAction.autoScale("layer");
222 }
223
224 new MapMover(MapView.this, contentPane);
225 }
226 });
227
228 // listend to selection changes to redraw the map
229 DataSet.addSelectionListener(repaintSelectionChangedListener);
230
231 //store the last mouse action
232 this.addMouseMotionListener(new MouseMotionListener() {
233 public void mouseDragged(MouseEvent e) {
234 mouseMoved(e);
235 }
236 public void mouseMoved(MouseEvent e) {
237 lastMEvent = e;
238 }
239 });
240 }
241
242 /**
243 * Adds a GPX layer. A GPX layer is added below the lowest data layer.
244 *
245 * @param layer the GPX layer
246 */
247 protected void addGpxLayer(GpxLayer layer) {
248 if (layers.isEmpty()) {
249 layers.add(layer);
250 return;
251 }
252 for (int i=layers.size()-1; i>= 0; i--) {
253 if (layers.get(i) instanceof OsmDataLayer) {
254 if (i == layers.size()-1) {
255 layers.add(layer);
256 } else {
257 layers.add(i+1, layer);
258 }
259 return;
260 }
261 }
262 layers.add(0, layer);
263 }
264
265 /**
266 * Add a layer to the current MapView. The layer will be added at topmost
267 * position.
268 */
269 public void addLayer(Layer layer) {
270 if (layer instanceof MarkerLayer && playHeadMarker == null) {
271 playHeadMarker = PlayHeadMarker.create();
272 }
273
274 if (layer instanceof GpxLayer) {
275 addGpxLayer((GpxLayer)layer);
276 } else if (layer.isBackgroundLayer() || layers.isEmpty()) {
277 layers.add(layer);
278 } else {
279 layers.add(0, layer);
280 }
281 fireLayerAdded(layer);
282 if (layer instanceof OsmDataLayer || activeLayer == null) {
283 // autoselect the new layer
284 setActiveLayer(layer);
285 }
286 layer.addPropertyChangeListener(this);
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 fireLayerRemoved(layer);
362 layer.removePropertyChangeListener(this);
363 layer.destroy();
364 AudioPlayer.reset();
365 repaint();
366 }
367
368 private boolean virtualNodesEnabled = false;
369
370 public void setVirtualNodesEnabled(boolean enabled) {
371 if(virtualNodesEnabled != enabled) {
372 virtualNodesEnabled = enabled;
373 repaint();
374 }
375 }
376 public boolean isVirtualNodesEnabled() {
377 return virtualNodesEnabled;
378 }
379
380 /**
381 * Moves the layer to the given new position. No event is fired, but repaints
382 * according to the new Z-Order of the layers.
383 *
384 * @param layer The layer to move
385 * @param pos The new position of the layer
386 */
387 public void moveLayer(Layer layer, int pos) {
388 int curLayerPos = layers.indexOf(layer);
389 if (curLayerPos == -1)
390 throw new IllegalArgumentException(tr("Layer not in list."));
391 if (pos == curLayerPos)
392 return; // already in place.
393 layers.remove(curLayerPos);
394 if (pos >= layers.size()) {
395 layers.add(layer);
396 } else {
397 layers.add(pos, layer);
398 }
399 setEditLayer(layers);
400 AudioPlayer.reset();
401 repaint();
402 }
403
404 public int getLayerPos(Layer layer) {
405 int curLayerPos = layers.indexOf(layer);
406 if (curLayerPos == -1)
407 throw new IllegalArgumentException(tr("Layer not in list."));
408 return curLayerPos;
409 }
410
411 /**
412 * Creates a list of the visible layers in Z-Order, the layer with the lowest Z-Order
413 * first, layer with the highest Z-Order last.
414 *
415 * @return a list of the visible in Z-Order, the layer with the lowest Z-Order
416 * first, layer with the highest Z-Order last.
417 */
418 protected List<Layer> getVisibleLayersInZOrder() {
419 ArrayList<Layer> ret = new ArrayList<Layer>();
420 for (Layer l: layers) {
421 if (l.isVisible()) {
422 ret.add(l);
423 }
424 }
425 // sort according to position in the list of layers, with one exception:
426 // an active data layer always becomes a higher Z-Order than all other
427 // data layers
428 //
429 Collections.sort(
430 ret,
431 new Comparator<Layer>() {
432 public int compare(Layer l1, Layer l2) {
433 if (l1 instanceof OsmDataLayer && l2 instanceof OsmDataLayer) {
434 if (l1 == getActiveLayer()) return -1;
435 if (l2 == getActiveLayer()) return 1;
436 return Integer.valueOf(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
437 } else
438 return Integer.valueOf(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
439 }
440 }
441 );
442 Collections.reverse(ret);
443 return ret;
444 }
445
446 private void paintLayer(Layer layer, Graphics2D g, Bounds box) {
447 if (layer.getOpacity() < 1) {
448 g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,(float)layer.getOpacity()));
449 }
450 layer.paint(g, this, box);
451 g.setPaintMode();
452 }
453
454 /**
455 * Draw the component.
456 */
457 @Override public void paint(Graphics g) {
458 if (BugReportExceptionHandler.exceptionHandlingInProgress())
459 return;
460
461 if (center == null)
462 return; // no data loaded yet.
463
464 List<Layer> visibleLayers = getVisibleLayersInZOrder();
465
466 int nonChangedLayersCount = 0;
467 for (Layer l: visibleLayers) {
468 if (l.isChanged() || l == changedLayer) {
469 break;
470 } else {
471 nonChangedLayersCount++;
472 }
473 }
474
475 boolean canUseBuffer = !paintPreferencesChanged && nonChangedLayers.size() <= nonChangedLayersCount &&
476 lastViewID == getViewID() && lastClipBounds.contains(g.getClipBounds());
477 if (canUseBuffer) {
478 for (int i=0; i<nonChangedLayers.size(); i++) {
479 if (visibleLayers.get(i) != nonChangedLayers.get(i)) {
480 canUseBuffer = false;
481 break;
482 }
483 }
484 }
485
486 if (null == offscreenBuffer || offscreenBuffer.getWidth() != getWidth() || offscreenBuffer.getHeight() != getHeight()) {
487 offscreenBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR);
488 }
489
490 Graphics2D tempG = offscreenBuffer.createGraphics();
491 tempG.setClip(g.getClip());
492 Bounds box = getLatLonBounds(g.getClipBounds());
493
494 if (!canUseBuffer || nonChangedLayersBuffer == null) {
495 if (null == nonChangedLayersBuffer || nonChangedLayersBuffer.getWidth() != getWidth() || nonChangedLayersBuffer.getHeight() != getHeight()) {
496 nonChangedLayersBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR);
497 }
498 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
499 g2.setClip(g.getClip());
500 g2.setColor(PaintColors.getBackgroundColor());
501 g2.fillRect(0, 0, getWidth(), getHeight());
502
503 for (int i=0; i<nonChangedLayersCount; i++) {
504 paintLayer(visibleLayers.get(i),g2, box);
505 }
506 } else {
507 // Maybe there were more unchanged layers then last time - draw them to buffer
508 if (nonChangedLayers.size() != nonChangedLayersCount) {
509 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
510 g2.setClip(g.getClip());
511 for (int i=nonChangedLayers.size(); i<nonChangedLayersCount; i++) {
512 paintLayer(visibleLayers.get(i),g2, box);
513 }
514 }
515 }
516
517 nonChangedLayers.clear();
518 changedLayer = null;
519 for (int i=0; i<nonChangedLayersCount; i++) {
520 nonChangedLayers.add(visibleLayers.get(i));
521 }
522 lastViewID = getViewID();
523 paintPreferencesChanged = false;
524 lastClipBounds = g.getClipBounds();
525
526 tempG.drawImage(nonChangedLayersBuffer, 0, 0, null);
527
528 for (int i=nonChangedLayersCount; i<visibleLayers.size(); i++) {
529 paintLayer(visibleLayers.get(i),tempG, box);
530 }
531
532 for (MapViewPaintable mvp : temporaryLayers) {
533 mvp.paint(tempG, this, box);
534 }
535
536 // draw world borders
537 tempG.setColor(Color.WHITE);
538 Bounds b = getProjection().getWorldBoundsLatLon();
539 double lat = b.getMin().lat();
540 double lon = b.getMin().lon();
541
542 Point p = getPoint(b.getMin());
543
544 GeneralPath path = new GeneralPath();
545
546 path.moveTo(p.x, p.y);
547 double max = b.getMax().lat();
548 for(; lat <= max; lat += 1.0)
549 {
550 p = getPoint(new LatLon(lat >= max ? max : lat, lon));
551 path.lineTo(p.x, p.y);
552 }
553 lat = max; max = b.getMax().lon();
554 for(; lon <= max; lon += 1.0)
555 {
556 p = getPoint(new LatLon(lat, lon >= max ? max : lon));
557 path.lineTo(p.x, p.y);
558 }
559 lon = max; max = b.getMin().lat();
560 for(; lat >= max; lat -= 1.0)
561 {
562 p = getPoint(new LatLon(lat <= max ? max : lat, lon));
563 path.lineTo(p.x, p.y);
564 }
565 lat = max; max = b.getMin().lon();
566 for(; lon >= max; lon -= 1.0)
567 {
568 p = getPoint(new LatLon(lat, lon <= max ? max : lon));
569 path.lineTo(p.x, p.y);
570 }
571
572 int w = getWidth();
573 int h = getHeight();
574
575 // Work around OpenJDK having problems when drawing out of bounds
576 final Area border = new Area(path);
577 // Make the viewport 1px larger in every direction to prevent an
578 // additional 1px border when zooming in
579 final Area viewport = new Area(new Rectangle(-1, -1, w + 2, h + 2));
580 border.intersect(viewport);
581 tempG.draw(border);
582
583 if (Main.map.filterDialog != null) {
584 Main.map.filterDialog.drawOSDText(tempG);
585 }
586
587 if (playHeadMarker != null) {
588 playHeadMarker.paint(tempG, this);
589 }
590
591 g.drawImage(offscreenBuffer, 0, 0, null);
592 super.paint(g);
593 }
594
595 /**
596 * Set the new dimension to the view.
597 */
598 public void recalculateCenterScale(BoundingXYVisitor box) {
599 if (box == null) {
600 box = new BoundingXYVisitor();
601 }
602 if (box.getBounds() == null) {
603 box.visit(getProjection().getWorldBoundsLatLon());
604 }
605 if (!box.hasExtend()) {
606 box.enlargeBoundingBox();
607 }
608
609 zoomTo(box.getBounds());
610 }
611
612 /**
613 * @return An unmodifiable collection of all layers
614 */
615 public Collection<Layer> getAllLayers() {
616 return Collections.unmodifiableCollection(layers);
617 }
618
619 /**
620 * @return An unmodifiable ordered list of all layers
621 */
622 public List<Layer> getAllLayersAsList() {
623 return Collections.unmodifiableList(layers);
624 }
625
626 /**
627 * Replies an unmodifiable list of layers of a certain type.
628 *
629 * Example:
630 * <pre>
631 * List<WMSLayer> wmsLayers = getLayersOfType(WMSLayer.class);
632 * </pre>
633 *
634 * @return an unmodifiable list of layers of a certain type.
635 */
636 public <T> List<T> getLayersOfType(Class<T> ofType) {
637 ArrayList<T> ret = new ArrayList<T>();
638 for (Layer layer : getAllLayersAsList()) {
639 if (ofType.isInstance(layer)) {
640 ret.add(ofType.cast(layer));
641 }
642 }
643 return ret;
644 }
645
646 /**
647 * Replies the number of layers managed by this mav view
648 *
649 * @return the number of layers managed by this mav view
650 */
651 public int getNumLayers() {
652 return layers.size();
653 }
654
655 /**
656 * Replies true if there is at least one layer in this map view
657 *
658 * @return true if there is at least one layer in this map view
659 */
660 public boolean hasLayers() {
661 return getNumLayers() > 0;
662 }
663
664 private void setEditLayer(List<Layer> layersList) {
665 OsmDataLayer newEditLayer = layersList.contains(editLayer)?editLayer:null;
666 OsmDataLayer oldEditLayer = editLayer;
667
668 // Find new edit layer
669 if (activeLayer != editLayer || !layersList.contains(editLayer)) {
670 if (activeLayer instanceof OsmDataLayer && layersList.contains(activeLayer)) {
671 newEditLayer = (OsmDataLayer) activeLayer;
672 } else {
673 for (Layer layer:layersList) {
674 if (layer instanceof OsmDataLayer) {
675 newEditLayer = (OsmDataLayer) layer;
676 break;
677 }
678 }
679 }
680 }
681
682 // Set new edit layer
683 if (newEditLayer != editLayer) {
684 if (newEditLayer == null) {
685 getCurrentDataSet().setSelected();
686 }
687
688 editLayer = newEditLayer;
689 fireEditLayerChanged(oldEditLayer, newEditLayer);
690 refreshTitle();
691 }
692
693 }
694
695 /**
696 * Sets the active layer to <code>layer</code>. If <code>layer</code> is an instance
697 * of {@see OsmDataLayer} also sets {@see #editLayer} to <code>layer</code>.
698 *
699 * @param layer the layer to be activate; must be one of the layers in the list of layers
700 * @exception IllegalArgumentException thrown if layer is not in the lis of layers
701 */
702 public void setActiveLayer(Layer layer) {
703 setActiveLayer(layer, true);
704 }
705
706 private void setActiveLayer(Layer layer, boolean setEditLayer) {
707 if (layer != null && !layers.contains(layer))
708 throw new IllegalArgumentException(tr("Layer ''{0}'' must be in list of layers", layer.toString()));
709
710 if (layer == activeLayer)
711 return;
712
713 Layer old = activeLayer;
714 activeLayer = layer;
715 if (setEditLayer) {
716 setEditLayer(layers);
717 }
718 fireActiveLayerChanged(old, layer);
719
720 /* This only makes the buttons look disabled. Disabling the actions as well requires
721 * the user to re-select the tool after i.e. moving a layer. While testing I found
722 * that I switch layers and actions at the same time and it was annoying to mind the
723 * order. This way it works as visual clue for new users */
724 for (Enumeration<AbstractButton> e = Main.map.toolGroup.getElements() ; e.hasMoreElements() ;) {
725 AbstractButton x=e.nextElement();
726 x.setEnabled(((MapMode)x.getAction()).layerIsSupported(layer));
727 }
728 AudioPlayer.reset();
729 repaint();
730 }
731
732 /**
733 * Replies the currently active layer
734 *
735 * @return the currently active layer (may be null)
736 */
737 public Layer getActiveLayer() {
738 return activeLayer;
739 }
740
741 /**
742 * Replies the current edit layer, if any
743 *
744 * @return the current edit layer. May be null.
745 */
746 public OsmDataLayer getEditLayer() {
747 return editLayer;
748 }
749
750 /**
751 * replies true if the list of layers managed by this map view contain layer
752 *
753 * @param layer the layer
754 * @return true if the list of layers managed by this map view contain layer
755 */
756 public boolean hasLayer(Layer layer) {
757 return layers.contains(layer);
758 }
759
760 /**
761 * Tries to zoom to the download boundingbox[es] of the current edit layer
762 * (aka {@link OsmDataLayer}). If the edit layer has multiple download bounding
763 * boxes it zooms to a large virtual bounding box containing all smaller ones.
764 *
765 * @return <code>true</code> if a zoom operation has been performed
766 */
767 public boolean zoomToDataSetBoundingBox(DataSet ds) {
768 // In case we already have an existing data layer ...
769 OsmDataLayer layer= getEditLayer();
770 if (layer == null)
771 return false;
772 Collection<DataSource> dataSources = ds.dataSources;
773 // ... with bounding box[es] of data loaded from OSM or a file...
774 BoundingXYVisitor bbox = new BoundingXYVisitor();
775 for (DataSource source : dataSources) {
776 bbox.visit(source.bounds);
777 }
778 if (bbox.hasExtend()) {
779 // ... we zoom to it's bounding box
780 recalculateCenterScale(bbox);
781 return true;
782 }
783 return false;
784 }
785
786 public boolean addTemporaryLayer(MapViewPaintable mvp) {
787 if (temporaryLayers.contains(mvp)) return false;
788 return temporaryLayers.add(mvp);
789 }
790
791 public boolean removeTemporaryLayer(MapViewPaintable mvp) {
792 return temporaryLayers.remove(mvp);
793 }
794
795 public void propertyChange(PropertyChangeEvent evt) {
796 if (evt.getPropertyName().equals(Layer.VISIBLE_PROP)) {
797 repaint();
798 } else if (evt.getPropertyName().equals(Layer.OPACITY_PROP)) {
799 Layer l = (Layer)evt.getSource();
800 if (l.isVisible()) {
801 changedLayer = l;
802 repaint();
803 }
804 } else if (evt.getPropertyName().equals(OsmDataLayer.REQUIRES_SAVE_TO_DISK_PROP)
805 || evt.getPropertyName().equals(OsmDataLayer.REQUIRES_UPLOAD_TO_SERVER_PROP)) {
806 OsmDataLayer layer = (OsmDataLayer)evt.getSource();
807 if (layer == getEditLayer()) {
808 refreshTitle();
809 }
810 }
811 }
812
813 protected void refreshTitle() {
814 boolean dirty = editLayer != null && (editLayer.requiresSaveToFile() || editLayer.requiresUploadToServer());
815 if (dirty) {
816 JOptionPane.getFrameForComponent(Main.parent).setTitle("* " + tr("Java OpenStreetMap Editor"));
817 } else {
818 JOptionPane.getFrameForComponent(Main.parent).setTitle(tr("Java OpenStreetMap Editor"));
819 }
820 }
821
822 public void preferenceChanged(PreferenceChangeEvent e) {
823 paintPreferencesChanged = true;
824 }
825
826 private SelectionChangedListener repaintSelectionChangedListener = new SelectionChangedListener(){
827 public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
828 repaint();
829 }
830 };
831
832 public void destroy() {
833 Main.pref.removePreferenceChangeListener(this);
834 DataSet.removeSelectionListener(repaintSelectionChangedListener);
835 }
836
837}
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