source: josm/trunk/src/org/openstreetmap/josm/gui/MapView.java@ 3144

Last change on this file since 3144 was 3144, checked in by jttt, 14 years ago

Fix #4740 Map view sometimes turns black
  • Property svn:eol-style set to native
File size: 27.7 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.Preferences.PreferenceChangeEvent;
42import org.openstreetmap.josm.data.Preferences.PreferenceChangedListener;
43import org.openstreetmap.josm.data.coor.LatLon;
44import org.openstreetmap.josm.data.osm.DataSet;
45import org.openstreetmap.josm.data.osm.DataSource;
46import org.openstreetmap.josm.data.osm.OsmPrimitive;
47import org.openstreetmap.josm.data.osm.visitor.BoundingXYVisitor;
48import org.openstreetmap.josm.data.osm.visitor.paint.PaintColors;
49import org.openstreetmap.josm.gui.layer.GpxLayer;
50import org.openstreetmap.josm.gui.layer.Layer;
51import org.openstreetmap.josm.gui.layer.MapViewPaintable;
52import org.openstreetmap.josm.gui.layer.OsmDataLayer;
53import org.openstreetmap.josm.gui.layer.markerlayer.MarkerLayer;
54import org.openstreetmap.josm.gui.layer.markerlayer.PlayHeadMarker;
55import org.openstreetmap.josm.tools.AudioPlayer;
56
57/**
58 * This is a component used in the MapFrame for browsing the map. It use is to
59 * provide the MapMode's enough capabilities to operate.
60 *
61 * MapView hold meta-data about the data set currently displayed, as scale level,
62 * center point viewed, what scrolling mode or editing mode is selected or with
63 * what projection the map is viewed etc..
64 *
65 * MapView is able to administrate several layers.
66 *
67 * @author imi
68 */
69public class MapView extends NavigatableComponent implements PropertyChangeListener, PreferenceChangedListener {
70
71 /**
72 * Interface to notify listeners of the change of the active layer.
73 * @author imi
74 */
75 public interface LayerChangeListener {
76 void activeLayerChange(Layer oldLayer, Layer newLayer);
77 void layerAdded(Layer newLayer);
78 void layerRemoved(Layer oldLayer);
79 }
80
81 public interface EditLayerChangeListener {
82 void editLayerChanged(OsmDataLayer oldLayer, OsmDataLayer newLayer);
83 }
84
85 /**
86 * the layer listeners
87 */
88 private static final CopyOnWriteArrayList<MapView.LayerChangeListener> layerChangeListeners = new CopyOnWriteArrayList<MapView.LayerChangeListener>();
89 private static final CopyOnWriteArrayList<EditLayerChangeListener> editLayerChangeListeners = new CopyOnWriteArrayList<EditLayerChangeListener>();
90
91 /**
92 * Removes a layer change listener
93 *
94 * @param listener the listener. Ignored if null or already registered.
95 */
96 public static void removeLayerChangeListener(MapView.LayerChangeListener listener) {
97 layerChangeListeners.remove(listener);
98 }
99
100 public static void removeEditLayerChangeListener(EditLayerChangeListener listener) {
101 editLayerChangeListeners.remove(listener);
102 }
103
104 /**
105 * Adds a layer change listener
106 *
107 * @param listener the listener. Ignored if null or already registered.
108 */
109 public static void addLayerChangeListener(MapView.LayerChangeListener listener) {
110 if (listener != null) {
111 layerChangeListeners.addIfAbsent(listener);
112 }
113 }
114
115 /**
116 * Adds a edit layer change listener
117 *
118 * @param listener the listener. Ignored if null or already registered.
119 * @param initialFire Fire an edit-layer-changed-event right after adding the listener.
120 */
121 public static void addEditLayerChangeListener(EditLayerChangeListener listener, boolean initialFire) {
122 addEditLayerChangeListener(listener);
123 if (initialFire) {
124 if (Main.map != null && Main.map.mapView != null && Main.map.mapView.getEditLayer() != null) {
125 fireEditLayerChanged(null, Main.map.mapView.getEditLayer());
126 }
127 }
128 }
129
130 public static void addEditLayerChangeListener(EditLayerChangeListener listener) {
131 if (listener != null) {
132 editLayerChangeListeners.addIfAbsent(listener);
133 }
134 }
135
136 protected static void fireActiveLayerChanged(Layer oldLayer, Layer newLayer) {
137 for (LayerChangeListener l : layerChangeListeners) {
138 l.activeLayerChange(oldLayer, newLayer);
139 }
140 }
141
142 protected static void fireLayerAdded(Layer newLayer) {
143 for (MapView.LayerChangeListener l : MapView.layerChangeListeners) {
144 l.layerAdded(newLayer);
145 }
146 }
147
148 protected static void fireLayerRemoved(Layer layer) {
149 for (MapView.LayerChangeListener l : MapView.layerChangeListeners) {
150 l.layerRemoved(layer);
151 }
152 }
153
154 protected static void fireEditLayerChanged(OsmDataLayer oldLayer, OsmDataLayer newLayer) {
155 for (EditLayerChangeListener l : editLayerChangeListeners) {
156 l.editLayerChanged(oldLayer, newLayer);
157 }
158 }
159
160 /**
161 * A list of all layers currently loaded.
162 */
163 private final List<Layer> layers = new ArrayList<Layer>();
164 /**
165 * The play head marker: there is only one of these so it isn't in any specific layer
166 */
167 public PlayHeadMarker playHeadMarker = null;
168
169 /**
170 * The layer from the layers list that is currently active.
171 */
172 private Layer activeLayer;
173
174 private OsmDataLayer editLayer;
175
176 /**
177 * The last event performed by mouse.
178 */
179 public MouseEvent lastMEvent;
180
181 private LinkedList<MapViewPaintable> temporaryLayers = new LinkedList<MapViewPaintable>();
182
183 private BufferedImage nonChangedLayersBuffer;
184 private BufferedImage offscreenBuffer;
185 // Layers that wasn't changed since last paint
186 private final List<Layer> nonChangedLayers = new ArrayList<Layer>();
187 private int lastViewID;
188 private boolean paintPreferencesChanged = true;
189 private Rectangle lastClipBounds = new Rectangle();
190
191 public MapView() {
192 Main.pref.addPreferenceChangeListener(this);
193 addComponentListener(new ComponentAdapter(){
194 @Override public void componentResized(ComponentEvent e) {
195 removeComponentListener(this);
196
197 MapSlider zoomSlider = new MapSlider(MapView.this);
198 add(zoomSlider);
199 zoomSlider.setBounds(3, 0, 114, 30);
200
201 MapScaler scaler = new MapScaler(MapView.this);
202 add(scaler);
203 scaler.setLocation(10,30);
204
205 OsmDataLayer layer = getEditLayer();
206 if (layer != null) {
207 if (!zoomToDataSetBoundingBox(layer.data)) {
208 // no bounding box defined
209 new AutoScaleAction("data").actionPerformed(null);
210 }
211 } else {
212 new AutoScaleAction("layer").actionPerformed(null);
213 }
214
215 new MapMover(MapView.this, Main.contentPane);
216 JosmAction mv;
217 mv = new MoveAction(MoveAction.Direction.UP);
218 if (mv.getShortcut() != null) {
219 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "UP");
220 Main.contentPane.getActionMap().put("UP", mv);
221 }
222 mv = new MoveAction(MoveAction.Direction.DOWN);
223 if (mv.getShortcut() != null) {
224 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "DOWN");
225 Main.contentPane.getActionMap().put("DOWN", mv);
226 }
227 mv = new MoveAction(MoveAction.Direction.LEFT);
228 if (mv.getShortcut() != null) {
229 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "LEFT");
230 Main.contentPane.getActionMap().put("LEFT", mv);
231 }
232 mv = new MoveAction(MoveAction.Direction.RIGHT);
233 if (mv.getShortcut() != null) {
234 Main.contentPane.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(mv.getShortcut().getKeyStroke(), "RIGHT");
235 Main.contentPane.getActionMap().put("RIGHT", mv);
236 }
237 }
238 });
239
240 // listend to selection changes to redraw the map
241 DataSet.selListeners.add(new SelectionChangedListener(){
242 public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
243 repaint();
244 }
245 });
246
247 //store the last mouse action
248 this.addMouseMotionListener(new MouseMotionListener() {
249 public void mouseDragged(MouseEvent e) {
250 mouseMoved(e);
251 }
252 public void mouseMoved(MouseEvent e) {
253 lastMEvent = e;
254 }
255 });
256 }
257
258 /**
259 * Adds a GPX layer. A GPX layer is added below the lowest data layer.
260 *
261 * @param layer the GPX layer
262 */
263 protected void addGpxLayer(GpxLayer layer) {
264 if (layers.isEmpty()) {
265 layers.add(layer);
266 return;
267 }
268 for (int i=layers.size()-1; i>= 0; i--) {
269 if (layers.get(i) instanceof OsmDataLayer) {
270 if (i == layers.size()-1) {
271 layers.add(layer);
272 } else {
273 layers.add(i+1, layer);
274 }
275 return;
276 }
277 }
278 layers.add(layer);
279 }
280
281 /**
282 * Add a layer to the current MapView. The layer will be added at topmost
283 * position.
284 */
285 public void addLayer(Layer layer) {
286 if (layer instanceof MarkerLayer && playHeadMarker == null) {
287 playHeadMarker = PlayHeadMarker.create();
288 }
289
290 if (layer instanceof GpxLayer) {
291 addGpxLayer((GpxLayer)layer);
292 } else if (layer.isBackgroundLayer() || layers.isEmpty()) {
293 layers.add(layer);
294 } else {
295 layers.add(0, layer);
296 }
297 fireLayerAdded(layer);
298 if (layer instanceof OsmDataLayer || activeLayer == null) {
299 // autoselect the new layer
300 setActiveLayer(layer);
301 }
302 layer.addPropertyChangeListener(this);
303 AudioPlayer.reset();
304 repaint();
305 }
306
307 @Override
308 protected DataSet getCurrentDataSet() {
309 if (editLayer != null)
310 return editLayer.data;
311 else
312 return null;
313 }
314
315 /**
316 * Replies true if the active layer is drawable.
317 *
318 * @return true if the active layer is drawable, false otherwise
319 */
320 public boolean isActiveLayerDrawable() {
321 return editLayer != null;
322 }
323
324 /**
325 * Replies true if the active layer is visible.
326 *
327 * @return true if the active layer is visible, false otherwise
328 */
329 public boolean isActiveLayerVisible() {
330 return isActiveLayerDrawable() && editLayer.isVisible();
331 }
332
333 /**
334 * Determines the next active data layer according to the following
335 * rules:
336 * <ul>
337 * <li>if there is at least one {@see OsmDataLayer} the first one
338 * becomes active</li>
339 * <li>otherwise, the top most layer of any type becomes active</li>
340 * </ul>
341 *
342 * @return the next active data layer
343 */
344 protected Layer determineNextActiveLayer(List<Layer> layersList) {
345 // First look for data layer
346 for (Layer layer:layersList) {
347 if (layer instanceof OsmDataLayer)
348 return layer;
349 }
350
351 // Then any layer
352 if (!layersList.isEmpty())
353 return layersList.get(0);
354
355 // and then give up
356 return null;
357
358 }
359
360 /**
361 * Remove the layer from the mapview. If the layer was in the list before,
362 * an LayerChange event is fired.
363 */
364 public void removeLayer(Layer layer) {
365 List<Layer> layersList = new ArrayList<Layer>(layers);
366
367 if (!layersList.remove(layer))
368 return;
369
370 setEditLayer(layersList);
371
372 if (layer == activeLayer) {
373 setActiveLayer(determineNextActiveLayer(layersList), false);
374 }
375
376 layers.remove(layer);
377 fireLayerRemoved(layer);
378 layer.removePropertyChangeListener(this);
379 layer.destroy();
380 AudioPlayer.reset();
381 repaint();
382 }
383
384 private boolean virtualNodesEnabled = false;
385
386 public void setVirtualNodesEnabled(boolean enabled) {
387 if(virtualNodesEnabled != enabled) {
388 virtualNodesEnabled = enabled;
389 repaint();
390 }
391 }
392 public boolean isVirtualNodesEnabled() {
393 return virtualNodesEnabled;
394 }
395
396 /**
397 * Moves the layer to the given new position. No event is fired, but repaints
398 * according to the new Z-Order of the layers.
399 *
400 * @param layer The layer to move
401 * @param pos The new position of the layer
402 */
403 public void moveLayer(Layer layer, int pos) {
404 int curLayerPos = layers.indexOf(layer);
405 if (curLayerPos == -1)
406 throw new IllegalArgumentException(tr("Layer not in list."));
407 if (pos == curLayerPos)
408 return; // already in place.
409 layers.remove(curLayerPos);
410 if (pos >= layers.size()) {
411 layers.add(layer);
412 } else {
413 layers.add(pos, layer);
414 }
415 setEditLayer(layers);
416 AudioPlayer.reset();
417 repaint();
418 }
419
420 public int getLayerPos(Layer layer) {
421 int curLayerPos = layers.indexOf(layer);
422 if (curLayerPos == -1)
423 throw new IllegalArgumentException(tr("Layer not in list."));
424 return curLayerPos;
425 }
426
427 /**
428 * Creates a list of the visible layers in Z-Order, the layer with the lowest Z-Order
429 * first, layer with the highest Z-Order last.
430 *
431 * @return a list of the visible in Z-Order, the layer with the lowest Z-Order
432 * first, layer with the highest Z-Order last.
433 */
434 protected List<Layer> getVisibleLayersInZOrder() {
435 ArrayList<Layer> ret = new ArrayList<Layer>();
436 for (Layer l: layers) {
437 if (l.isVisible()) {
438 ret.add(l);
439 }
440 }
441 // sort according to position in the list of layers, with one exception:
442 // an active data layer always becomes a higher Z-Order than all other
443 // data layers
444 //
445 Collections.sort(
446 ret,
447 new Comparator<Layer>() {
448 public int compare(Layer l1, Layer l2) {
449 if (l1 instanceof OsmDataLayer && l2 instanceof OsmDataLayer) {
450 if (l1 == getActiveLayer()) return -1;
451 if (l2 == getActiveLayer()) return 1;
452 return Integer.valueOf(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
453 } else
454 return Integer.valueOf(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
455 }
456 }
457 );
458 Collections.reverse(ret);
459 return ret;
460 }
461
462 /**
463 * Draw the component.
464 */
465 @Override public void paint(Graphics g) {
466 if (center == null)
467 return; // no data loaded yet.
468
469 List<Layer> visibleLayers = getVisibleLayersInZOrder();
470
471 int nonChangedLayersCount = 0;
472 for (Layer l: visibleLayers) {
473 if (l.isChanged()) {
474 break;
475 } else {
476 nonChangedLayersCount++;
477 }
478 }
479
480 boolean canUseBuffer = !paintPreferencesChanged && nonChangedLayers.size() <= nonChangedLayersCount &&
481 lastViewID == getViewID() && lastClipBounds.contains(g.getClipBounds());
482 if (canUseBuffer) {
483 for (int i=0; i<nonChangedLayers.size(); i++) {
484 if (visibleLayers.get(i) != nonChangedLayers.get(i)) {
485 canUseBuffer = false;
486 break;
487 }
488 }
489 }
490
491 if (null == offscreenBuffer || offscreenBuffer.getWidth() != getWidth() || offscreenBuffer.getHeight() != getHeight()) {
492 offscreenBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR);
493 }
494
495 Graphics2D tempG = offscreenBuffer.createGraphics();
496 tempG.setClip(g.getClip());
497 Bounds box = getLatLonBounds(g.getClipBounds());
498
499 if (!canUseBuffer || nonChangedLayersBuffer == null) {
500 if (null == nonChangedLayersBuffer || nonChangedLayersBuffer.getWidth() != getWidth() || nonChangedLayersBuffer.getHeight() != getHeight()) {
501 nonChangedLayersBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR);
502 }
503 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
504 g2.setClip(g.getClip());
505 g2.setColor(PaintColors.BACKGROUND.get());
506 g2.fillRect(0, 0, getWidth(), getHeight());
507
508 for (int i=0; i<nonChangedLayersCount; i++) {
509 visibleLayers.get(i).paint(g2, this, box);
510 }
511 } else {
512 // Maybe there were more unchanged layers then last time - draw them to buffer
513 if (nonChangedLayers.size() != nonChangedLayersCount) {
514 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
515 g2.setClip(g.getClip());
516 for (int i=nonChangedLayers.size(); i<nonChangedLayersCount; i++) {
517 visibleLayers.get(i).paint(g2, this, box);
518 }
519 }
520 }
521
522 nonChangedLayers.clear();
523 for (int i=0; i<nonChangedLayersCount; i++) {
524 nonChangedLayers.add(visibleLayers.get(i));
525 }
526 lastViewID = getViewID();
527 paintPreferencesChanged = false;
528 lastClipBounds = g.getClipBounds();
529
530 tempG.drawImage(nonChangedLayersBuffer, 0, 0, null);
531
532 for (int i=nonChangedLayersCount; i<visibleLayers.size(); i++) {
533 visibleLayers.get(i).paint(tempG, this, box);
534 }
535
536 for (MapViewPaintable mvp : temporaryLayers) {
537 mvp.paint(tempG, this, box);
538 }
539
540 // draw world borders
541 tempG.setColor(Color.WHITE);
542 Bounds b = getProjection().getWorldBoundsLatLon();
543 double lat = b.getMin().lat();
544 double lon = b.getMin().lon();
545
546 Point p = getPoint(b.getMin());
547
548 GeneralPath path = new GeneralPath();
549
550 path.moveTo(p.x, p.y);
551 double max = b.getMax().lat();
552 for(; lat <= max; lat += 1.0)
553 {
554 p = getPoint(new LatLon(lat >= max ? max : lat, lon));
555 path.lineTo(p.x, p.y);
556 }
557 lat = max; max = b.getMax().lon();
558 for(; lon <= max; lon += 1.0)
559 {
560 p = getPoint(new LatLon(lat, lon >= max ? max : lon));
561 path.lineTo(p.x, p.y);
562 }
563 lon = max; max = b.getMin().lat();
564 for(; lat >= max; lat -= 1.0)
565 {
566 p = getPoint(new LatLon(lat <= max ? max : lat, lon));
567 path.lineTo(p.x, p.y);
568 }
569 lat = max; max = b.getMin().lon();
570 for(; lon >= max; lon -= 1.0)
571 {
572 p = getPoint(new LatLon(lat, lon <= max ? max : lon));
573 path.lineTo(p.x, p.y);
574 }
575
576 int w = getWidth();
577 int h = getHeight();
578
579 // Work around OpenJDK having problems when drawing out of bounds
580 final Area border = new Area(path);
581 // Make the viewport 1px larger in every direction to prevent an
582 // additional 1px border when zooming in
583 final Area viewport = new Area(new Rectangle(-1, -1, w + 2, h + 2));
584 border.intersect(viewport);
585 tempG.draw(border);
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(OsmDataLayer.REQUIRES_SAVE_TO_DISK_PROP)
799 || evt.getPropertyName().equals(OsmDataLayer.REQUIRES_UPLOAD_TO_SERVER_PROP)) {
800 OsmDataLayer layer = (OsmDataLayer)evt.getSource();
801 if (layer == getEditLayer()) {
802 refreshTitle();
803 }
804 }
805 }
806
807 protected void refreshTitle() {
808 boolean dirty = editLayer != null && (editLayer.requiresSaveToFile() || editLayer.requiresUploadToServer());
809 if (dirty) {
810 JOptionPane.getFrameForComponent(Main.parent).setTitle("* " + tr("Java OpenStreetMap Editor"));
811 } else {
812 JOptionPane.getFrameForComponent(Main.parent).setTitle(tr("Java OpenStreetMap Editor"));
813 }
814 }
815
816 public void preferenceChanged(PreferenceChangeEvent e) {
817 paintPreferencesChanged = true;
818 }
819
820}
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