source: josm/trunk/src/org/openstreetmap/josm/gui/MapView.java@ 3125

Last change on this file since 3125 was 3125, checked in by jttt, 14 years ago

Fix #4723 Error on load, on zoom
  • Property svn:eol-style set to native
File size: 26.7 KB
Line 
1// License: GPL. See LICENSE file for details.
2
3package org.openstreetmap.josm.gui;
4
5import static org.openstreetmap.josm.tools.I18n.tr;
6
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.JComponent;
32import javax.swing.JOptionPane;
33
34import org.openstreetmap.josm.Main;
35import org.openstreetmap.josm.actions.AutoScaleAction;
36import org.openstreetmap.josm.actions.JosmAction;
37import org.openstreetmap.josm.actions.MoveAction;
38import org.openstreetmap.josm.actions.mapmode.MapMode;
39import org.openstreetmap.josm.data.Bounds;
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;
54
55/**
56 * This is a component used in the MapFrame for browsing the map. It use is to
57 * provide the MapMode's enough capabilities to operate.
58 *
59 * MapView hold meta-data about the data set currently displayed, as scale level,
60 * center point viewed, what scrolling mode or editing mode is selected or with
61 * what projection the map is viewed etc..
62 *
63 * MapView is able to administrate several layers.
64 *
65 * @author imi
66 */
67public class MapView extends NavigatableComponent implements PropertyChangeListener {
68
69 /**
70 * Interface to notify listeners of the change of the active layer.
71 * @author imi
72 */
73 public interface LayerChangeListener {
74 void activeLayerChange(Layer oldLayer, Layer newLayer);
75 void layerAdded(Layer newLayer);
76 void layerRemoved(Layer oldLayer);
77 }
78
79 public interface EditLayerChangeListener {
80 void editLayerChanged(OsmDataLayer oldLayer, OsmDataLayer newLayer);
81 }
82
83 /**
84 * the layer listeners
85 */
86 private static final CopyOnWriteArrayList<MapView.LayerChangeListener> layerChangeListeners = new CopyOnWriteArrayList<MapView.LayerChangeListener>();
87 private static final CopyOnWriteArrayList<EditLayerChangeListener> editLayerChangeListeners = new CopyOnWriteArrayList<EditLayerChangeListener>();
88
89 /**
90 * Removes a layer change listener
91 *
92 * @param listener the listener. Ignored if null or already registered.
93 */
94 public static void removeLayerChangeListener(MapView.LayerChangeListener listener) {
95 layerChangeListeners.remove(listener);
96 }
97
98 public static void removeEditLayerChangeListener(EditLayerChangeListener listener) {
99 editLayerChangeListeners.remove(listener);
100 }
101
102 /**
103 * Adds a layer change listener
104 *
105 * @param listener the listener. Ignored if null or already registered.
106 */
107 public static void addLayerChangeListener(MapView.LayerChangeListener listener) {
108 if (listener != null) {
109 layerChangeListeners.addIfAbsent(listener);
110 }
111 }
112
113 /**
114 * Adds a edit layer change listener
115 *
116 * @param listener the listener. Ignored if null or already registered.
117 * @param initialFire Fire an edit-layer-changed-event right after adding the listener.
118 */
119 public static void addEditLayerChangeListener(EditLayerChangeListener listener, boolean initialFire) {
120 addEditLayerChangeListener(listener);
121 if (initialFire) {
122 if (Main.map != null && Main.map.mapView != null && Main.map.mapView.getEditLayer() != null) {
123 fireEditLayerChanged(null, Main.map.mapView.getEditLayer());
124 }
125 }
126 }
127
128 public static void addEditLayerChangeListener(EditLayerChangeListener listener) {
129 if (listener != null) {
130 editLayerChangeListeners.addIfAbsent(listener);
131 }
132 }
133
134 protected static void fireActiveLayerChanged(Layer oldLayer, Layer newLayer) {
135 for (LayerChangeListener l : layerChangeListeners) {
136 l.activeLayerChange(oldLayer, newLayer);
137 }
138 }
139
140 protected static void fireLayerAdded(Layer newLayer) {
141 for (MapView.LayerChangeListener l : MapView.layerChangeListeners) {
142 l.layerAdded(newLayer);
143 }
144 }
145
146 protected static void fireLayerRemoved(Layer layer) {
147 for (MapView.LayerChangeListener l : MapView.layerChangeListeners) {
148 l.layerRemoved(layer);
149 }
150 }
151
152 protected static void fireEditLayerChanged(OsmDataLayer oldLayer, OsmDataLayer newLayer) {
153 for (EditLayerChangeListener l : editLayerChangeListeners) {
154 l.editLayerChanged(oldLayer, newLayer);
155 }
156 }
157
158 /**
159 * A list of all layers currently loaded.
160 */
161 private final List<Layer> layers = new ArrayList<Layer>();
162 /**
163 * The play head marker: there is only one of these so it isn't in any specific layer
164 */
165 public PlayHeadMarker playHeadMarker = null;
166
167 /**
168 * The layer from the layers list that is currently active.
169 */
170 private Layer activeLayer;
171
172 private OsmDataLayer editLayer;
173
174 /**
175 * The last event performed by mouse.
176 */
177 public MouseEvent lastMEvent;
178
179 private LinkedList<MapViewPaintable> temporaryLayers = new LinkedList<MapViewPaintable>();
180
181 private BufferedImage offscreenBuffer;
182 // Layers that wasn't changed since last paint
183 private final List<Layer> nonChangedLayers = new ArrayList<Layer>();
184 private int lastViewID;
185
186 public MapView() {
187 addComponentListener(new ComponentAdapter(){
188 @Override public void componentResized(ComponentEvent e) {
189 removeComponentListener(this);
190
191 MapSlider zoomSlider = new MapSlider(MapView.this);
192 add(zoomSlider);
193 zoomSlider.setBounds(3, 0, 114, 30);
194
195 MapScaler scaler = new MapScaler(MapView.this);
196 add(scaler);
197 scaler.setLocation(10,30);
198
199 OsmDataLayer layer = getEditLayer();
200 if (layer != null) {
201 if (!zoomToDataSetBoundingBox(layer.data)) {
202 // no bounding box defined
203 new AutoScaleAction("data").actionPerformed(null);
204 }
205 } else {
206 new AutoScaleAction("layer").actionPerformed(null);
207 }
208
209 new MapMover(MapView.this, Main.contentPane);
210 JosmAction mv;
211 mv = new MoveAction(MoveAction.Direction.UP);
212 if (mv.getShortcut() != null) {
213 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "UP");
214 Main.contentPane.getActionMap().put("UP", mv);
215 }
216 mv = new MoveAction(MoveAction.Direction.DOWN);
217 if (mv.getShortcut() != null) {
218 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "DOWN");
219 Main.contentPane.getActionMap().put("DOWN", mv);
220 }
221 mv = new MoveAction(MoveAction.Direction.LEFT);
222 if (mv.getShortcut() != null) {
223 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "LEFT");
224 Main.contentPane.getActionMap().put("LEFT", mv);
225 }
226 mv = new MoveAction(MoveAction.Direction.RIGHT);
227 if (mv.getShortcut() != null) {
228 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "RIGHT");
229 Main.contentPane.getActionMap().put("RIGHT", mv);
230 }
231 }
232 });
233
234 // listend to selection changes to redraw the map
235 DataSet.selListeners.add(new SelectionChangedListener(){
236 public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
237 repaint();
238 }
239 });
240
241 //store the last mouse action
242 this.addMouseMotionListener(new MouseMotionListener() {
243 public void mouseDragged(MouseEvent e) {
244 mouseMoved(e);
245 }
246 public void mouseMoved(MouseEvent e) {
247 lastMEvent = e;
248 }
249 });
250 }
251
252 /**
253 * Adds a GPX layer. A GPX layer is added below the lowest data layer.
254 *
255 * @param layer the GPX layer
256 */
257 protected void addGpxLayer(GpxLayer layer) {
258 if (layers.isEmpty()) {
259 layers.add(layer);
260 return;
261 }
262 for (int i=layers.size()-1; i>= 0; i--) {
263 if (layers.get(i) instanceof OsmDataLayer) {
264 if (i == layers.size()-1) {
265 layers.add(layer);
266 } else {
267 layers.add(i+1, layer);
268 }
269 return;
270 }
271 }
272 layers.add(layer);
273 }
274
275 /**
276 * Add a layer to the current MapView. The layer will be added at topmost
277 * position.
278 */
279 public void addLayer(Layer layer) {
280 if (layer instanceof MarkerLayer && playHeadMarker == null) {
281 playHeadMarker = PlayHeadMarker.create();
282 }
283
284 if (layer instanceof GpxLayer) {
285 addGpxLayer((GpxLayer)layer);
286 } else if (layer.isBackgroundLayer() || layers.isEmpty()) {
287 layers.add(layer);
288 } else {
289 layers.add(0, layer);
290 }
291 fireLayerAdded(layer);
292 if (layer instanceof OsmDataLayer || activeLayer == null) {
293 // autoselect the new layer
294 setActiveLayer(layer);
295 }
296 layer.addPropertyChangeListener(this);
297 AudioPlayer.reset();
298 repaint();
299 }
300
301 @Override
302 protected DataSet getCurrentDataSet() {
303 if (editLayer != null)
304 return editLayer.data;
305 else
306 return null;
307 }
308
309 /**
310 * Replies true if the active layer is drawable.
311 *
312 * @return true if the active layer is drawable, false otherwise
313 */
314 public boolean isActiveLayerDrawable() {
315 return editLayer != null;
316 }
317
318 /**
319 * Replies true if the active layer is visible.
320 *
321 * @return true if the active layer is visible, false otherwise
322 */
323 public boolean isActiveLayerVisible() {
324 return isActiveLayerDrawable() && editLayer.isVisible();
325 }
326
327 /**
328 * Determines the next active data layer according to the following
329 * rules:
330 * <ul>
331 * <li>if there is at least one {@see OsmDataLayer} the first one
332 * becomes active</li>
333 * <li>otherwise, the top most layer of any type becomes active</li>
334 * </ul>
335 *
336 * @return the next active data layer
337 */
338 protected Layer determineNextActiveLayer(List<Layer> layersList) {
339 // First look for data layer
340 for (Layer layer:layersList) {
341 if (layer instanceof OsmDataLayer)
342 return layer;
343 }
344
345 // Then any layer
346 if (!layersList.isEmpty())
347 return layersList.get(0);
348
349 // and then give up
350 return null;
351
352 }
353
354 /**
355 * Remove the layer from the mapview. If the layer was in the list before,
356 * an LayerChange event is fired.
357 */
358 public void removeLayer(Layer layer) {
359 List<Layer> layersList = new ArrayList<Layer>(layers);
360
361 if (!layersList.remove(layer))
362 return;
363
364 setEditLayer(layersList);
365
366 if (layer == activeLayer) {
367 setActiveLayer(determineNextActiveLayer(layersList), false);
368 }
369
370 layers.remove(layer);
371 fireLayerRemoved(layer);
372 layer.removePropertyChangeListener(this);
373 layer.destroy();
374 AudioPlayer.reset();
375 repaint();
376 }
377
378 private boolean virtualNodesEnabled = false;
379
380 public void setVirtualNodesEnabled(boolean enabled) {
381 if(virtualNodesEnabled != enabled) {
382 virtualNodesEnabled = enabled;
383 repaint();
384 }
385 }
386 public boolean isVirtualNodesEnabled() {
387 return virtualNodesEnabled;
388 }
389
390 /**
391 * Moves the layer to the given new position. No event is fired, but repaints
392 * according to the new Z-Order of the layers.
393 *
394 * @param layer The layer to move
395 * @param pos The new position of the layer
396 */
397 public void moveLayer(Layer layer, int pos) {
398 int curLayerPos = layers.indexOf(layer);
399 if (curLayerPos == -1)
400 throw new IllegalArgumentException(tr("Layer not in list."));
401 if (pos == curLayerPos)
402 return; // already in place.
403 layers.remove(curLayerPos);
404 if (pos >= layers.size()) {
405 layers.add(layer);
406 } else {
407 layers.add(pos, layer);
408 }
409 setEditLayer(layers);
410 AudioPlayer.reset();
411 repaint();
412 }
413
414 public int getLayerPos(Layer layer) {
415 int curLayerPos = layers.indexOf(layer);
416 if (curLayerPos == -1)
417 throw new IllegalArgumentException(tr("Layer not in list."));
418 return curLayerPos;
419 }
420
421 /**
422 * Creates a list of the visible layers in Z-Order, the layer with the lowest Z-Order
423 * first, layer with the highest Z-Order last.
424 *
425 * @return a list of the visible in Z-Order, the layer with the lowest Z-Order
426 * first, layer with the highest Z-Order last.
427 */
428 protected List<Layer> getVisibleLayersInZOrder() {
429 ArrayList<Layer> ret = new ArrayList<Layer>();
430 for (Layer l: layers) {
431 if (l.isVisible()) {
432 ret.add(l);
433 }
434 }
435 // sort according to position in the list of layers, with one exception:
436 // an active data layer always becomes a higher Z-Order than all other
437 // data layers
438 //
439 Collections.sort(
440 ret,
441 new Comparator<Layer>() {
442 public int compare(Layer l1, Layer l2) {
443 if (l1 instanceof OsmDataLayer && l2 instanceof OsmDataLayer) {
444 if (l1 == getActiveLayer()) return -1;
445 if (l2 == getActiveLayer()) return 1;
446 return Integer.valueOf(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
447 } else
448 return Integer.valueOf(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
449 }
450 }
451 );
452 Collections.reverse(ret);
453 return ret;
454 }
455
456 /**
457 * Draw the component.
458 */
459 @Override public void paint(Graphics g) {
460 if (center == null)
461 return; // no data loaded yet.
462
463 List<Layer> visibleLayers = getVisibleLayersInZOrder();
464
465 int nonChangedLayersCount = 0;
466 for (Layer l: visibleLayers) {
467 if (l.isChanged()) {
468 break;
469 } else {
470 nonChangedLayersCount++;
471 }
472 }
473
474 boolean canUseBuffer = nonChangedLayers.size() <= nonChangedLayersCount && lastViewID == getViewID();
475 if (canUseBuffer) {
476 for (int i=0; i<nonChangedLayers.size(); i++) {
477 if (visibleLayers.get(i) != nonChangedLayers.get(i)) {
478 canUseBuffer = false;
479 break;
480 }
481 }
482 }
483
484 Graphics2D tempG = (Graphics2D) g;
485 Bounds box = getLatLonBounds(g.getClipBounds());
486
487 if (!canUseBuffer || offscreenBuffer == null) {
488 if (null == offscreenBuffer || offscreenBuffer.getWidth() != getWidth() || offscreenBuffer.getHeight() != getHeight()) {
489 offscreenBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR);
490 }
491 Graphics2D g2 = offscreenBuffer.createGraphics();
492 g2.setClip(g.getClip());
493 g2.setColor(PaintColors.BACKGROUND.get());
494 g2.fillRect(0, 0, getWidth(), getHeight());
495
496 for (int i=0; i<nonChangedLayersCount; i++) {
497 visibleLayers.get(i).paint(g2, this, box);
498 }
499 } else {
500 // Maybe there were more unchanged layers then last time - draw them to buffer
501 if (nonChangedLayers.size() != nonChangedLayersCount) {
502 Graphics2D g2 = offscreenBuffer.createGraphics();
503 g2.setClip(g.getClip());
504 for (int i=nonChangedLayers.size(); i<nonChangedLayersCount; i++) {
505 visibleLayers.get(i).paint(g2, this, box);
506 }
507 }
508 }
509
510 nonChangedLayers.clear();
511 for (int i=0; i<nonChangedLayersCount; i++) {
512 nonChangedLayers.add(visibleLayers.get(i));
513 }
514 lastViewID = getViewID();
515
516 tempG.drawImage(offscreenBuffer, 0, 0, null);
517
518 for (int i=nonChangedLayersCount; i<visibleLayers.size(); i++) {
519 visibleLayers.get(i).paint(tempG, this, box);
520 }
521
522 for (MapViewPaintable mvp : temporaryLayers) {
523 mvp.paint(tempG, this, box);
524 }
525
526 // draw world borders
527 tempG.setColor(Color.WHITE);
528 Bounds b = getProjection().getWorldBoundsLatLon();
529 double lat = b.getMin().lat();
530 double lon = b.getMin().lon();
531
532 Point p = getPoint(b.getMin());
533
534 GeneralPath path = new GeneralPath();
535
536 path.moveTo(p.x, p.y);
537 double max = b.getMax().lat();
538 for(; lat <= max; lat += 1.0)
539 {
540 p = getPoint(new LatLon(lat >= max ? max : lat, lon));
541 path.lineTo(p.x, p.y);
542 }
543 lat = max; max = b.getMax().lon();
544 for(; lon <= max; lon += 1.0)
545 {
546 p = getPoint(new LatLon(lat, lon >= max ? max : lon));
547 path.lineTo(p.x, p.y);
548 }
549 lon = max; max = b.getMin().lat();
550 for(; lat >= max; lat -= 1.0)
551 {
552 p = getPoint(new LatLon(lat <= max ? max : lat, lon));
553 path.lineTo(p.x, p.y);
554 }
555 lat = max; max = b.getMin().lon();
556 for(; lon >= max; lon -= 1.0)
557 {
558 p = getPoint(new LatLon(lat, lon <= max ? max : lon));
559 path.lineTo(p.x, p.y);
560 }
561
562 int w = getWidth();
563 int h = getHeight();
564
565 // Work around OpenJDK having problems when drawing out of bounds
566 final Area border = new Area(path);
567 // Make the viewport 1px larger in every direction to prevent an
568 // additional 1px border when zooming in
569 final Area viewport = new Area(new Rectangle(-1, -1, w + 2, h + 2));
570 border.intersect(viewport);
571 tempG.draw(border);
572
573 if (playHeadMarker != null) {
574 playHeadMarker.paint(tempG, this);
575 }
576
577 super.paint(g);
578 }
579
580 /**
581 * Set the new dimension to the view.
582 */
583 public void recalculateCenterScale(BoundingXYVisitor box) {
584 if (box == null) {
585 box = new BoundingXYVisitor();
586 }
587 if (box.getBounds() == null) {
588 box.visit(getProjection().getWorldBoundsLatLon());
589 }
590 if (!box.hasExtend()) {
591 box.enlargeBoundingBox();
592 }
593
594 zoomTo(box.getBounds());
595 }
596
597 /**
598 * @return An unmodifiable collection of all layers
599 */
600 public Collection<Layer> getAllLayers() {
601 return Collections.unmodifiableCollection(layers);
602 }
603
604 /**
605 * @return An unmodifiable ordered list of all layers
606 */
607 public List<Layer> getAllLayersAsList() {
608 return Collections.unmodifiableList(layers);
609 }
610
611 /**
612 * Replies an unmodifiable list of layers of a certain type.
613 *
614 * Example:
615 * <pre>
616 * List<WMSLayer> wmsLayers = getLayersOfType(WMSLayer.class);
617 * </pre>
618 *
619 * @return an unmodifiable list of layers of a certain type.
620 */
621 public <T> List<T> getLayersOfType(Class<T> ofType) {
622 ArrayList<T> ret = new ArrayList<T>();
623 for (Layer layer : getAllLayersAsList()) {
624 if (ofType.isInstance(layer)) {
625 ret.add(ofType.cast(layer));
626 }
627 }
628 return ret;
629 }
630
631 /**
632 * Replies the number of layers managed by this mav view
633 *
634 * @return the number of layers managed by this mav view
635 */
636 public int getNumLayers() {
637 return layers.size();
638 }
639
640 /**
641 * Replies true if there is at least one layer in this map view
642 *
643 * @return true if there is at least one layer in this map view
644 */
645 public boolean hasLayers() {
646 return getNumLayers() > 0;
647 }
648
649 private void setEditLayer(List<Layer> layersList) {
650 OsmDataLayer newEditLayer = layersList.contains(editLayer)?editLayer:null;
651 OsmDataLayer oldEditLayer = editLayer;
652
653 // Find new edit layer
654 if (activeLayer != editLayer || !layersList.contains(editLayer)) {
655 if (activeLayer instanceof OsmDataLayer && layersList.contains(activeLayer)) {
656 newEditLayer = (OsmDataLayer) activeLayer;
657 } else {
658 for (Layer layer:layersList) {
659 if (layer instanceof OsmDataLayer) {
660 newEditLayer = (OsmDataLayer) layer;
661 break;
662 }
663 }
664 }
665 }
666
667 // Set new edit layer
668 if (newEditLayer != editLayer) {
669 if (newEditLayer == null) {
670 getCurrentDataSet().setSelected();
671 }
672
673 editLayer = newEditLayer;
674 fireEditLayerChanged(oldEditLayer, newEditLayer);
675 refreshTitle();
676 }
677
678 }
679
680 /**
681 * Sets the active layer to <code>layer</code>. If <code>layer</code> is an instance
682 * of {@see OsmDataLayer} also sets {@see #editLayer} to <code>layer</code>.
683 *
684 * @param layer the layer to be activate; must be one of the layers in the list of layers
685 * @exception IllegalArgumentException thrown if layer is not in the lis of layers
686 */
687 public void setActiveLayer(Layer layer) {
688 setActiveLayer(layer, true);
689 }
690
691 private void setActiveLayer(Layer layer, boolean setEditLayer) {
692 if (layer != null && !layers.contains(layer))
693 throw new IllegalArgumentException(tr("Layer ''{0}'' must be in list of layers", layer.toString()));
694
695 if (layer == activeLayer)
696 return;
697
698 Layer old = activeLayer;
699 activeLayer = layer;
700 if (setEditLayer) {
701 setEditLayer(layers);
702 }
703 fireActiveLayerChanged(old, layer);
704
705 /* This only makes the buttons look disabled. Disabling the actions as well requires
706 * the user to re-select the tool after i.e. moving a layer. While testing I found
707 * that I switch layers and actions at the same time and it was annoying to mind the
708 * order. This way it works as visual clue for new users */
709 for (Enumeration<AbstractButton> e = Main.map.toolGroup.getElements() ; e.hasMoreElements() ;) {
710 AbstractButton x=e.nextElement();
711 x.setEnabled(((MapMode)x.getAction()).layerIsSupported(layer));
712 }
713 AudioPlayer.reset();
714 repaint();
715 }
716
717 /**
718 * Replies the currently active layer
719 *
720 * @return the currently active layer (may be null)
721 */
722 public Layer getActiveLayer() {
723 return activeLayer;
724 }
725
726 /**
727 * Replies the current edit layer, if any
728 *
729 * @return the current edit layer. May be null.
730 */
731 public OsmDataLayer getEditLayer() {
732 return editLayer;
733 }
734
735 /**
736 * replies true if the list of layers managed by this map view contain layer
737 *
738 * @param layer the layer
739 * @return true if the list of layers managed by this map view contain layer
740 */
741 public boolean hasLayer(Layer layer) {
742 return layers.contains(layer);
743 }
744
745 /**
746 * Tries to zoom to the download boundingbox[es] of the current edit layer
747 * (aka {@link OsmDataLayer}). If the edit layer has multiple download bounding
748 * boxes it zooms to a large virtual bounding box containing all smaller ones.
749 *
750 * @return <code>true</code> if a zoom operation has been performed
751 */
752 public boolean zoomToDataSetBoundingBox(DataSet ds) {
753 // In case we already have an existing data layer ...
754 OsmDataLayer layer= getEditLayer();
755 if (layer == null)
756 return false;
757 Collection<DataSource> dataSources = ds.dataSources;
758 // ... with bounding box[es] of data loaded from OSM or a file...
759 BoundingXYVisitor bbox = new BoundingXYVisitor();
760 for (DataSource source : dataSources) {
761 bbox.visit(source.bounds);
762 }
763 if (bbox.hasExtend()) {
764 // ... we zoom to it's bounding box
765 recalculateCenterScale(bbox);
766 return true;
767 }
768 return false;
769 }
770
771 public boolean addTemporaryLayer(MapViewPaintable mvp) {
772 if (temporaryLayers.contains(mvp)) return false;
773 return temporaryLayers.add(mvp);
774 }
775
776 public boolean removeTemporaryLayer(MapViewPaintable mvp) {
777 return temporaryLayers.remove(mvp);
778 }
779
780 public void propertyChange(PropertyChangeEvent evt) {
781 if (evt.getPropertyName().equals(Layer.VISIBLE_PROP)) {
782 repaint();
783 } else if (evt.getPropertyName().equals(OsmDataLayer.REQUIRES_SAVE_TO_DISK_PROP)
784 || evt.getPropertyName().equals(OsmDataLayer.REQUIRES_UPLOAD_TO_SERVER_PROP)) {
785 OsmDataLayer layer = (OsmDataLayer)evt.getSource();
786 if (layer == getEditLayer()) {
787 refreshTitle();
788 }
789 }
790 }
791
792 protected void refreshTitle() {
793 boolean dirty = editLayer != null && (editLayer.requiresSaveToFile() || editLayer.requiresUploadToServer());
794 if (dirty) {
795 JOptionPane.getFrameForComponent(Main.parent).setTitle("* " + tr("Java OpenStreetMap Editor"));
796 } else {
797 JOptionPane.getFrameForComponent(Main.parent).setTitle(tr("Java OpenStreetMap Editor"));
798 }
799 }
800
801}
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