source: josm/trunk/src/org/openstreetmap/josm/gui/MapView.java@ 6019

Last change on this file since 6019 was 6019, checked in by akks, 11 years ago

see #8652: do not shift the map on screen when toggling panels by Tab [idea by andygol]
  • Property svn:eol-style set to native
File size: 31.9 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.Dimension;
9import java.awt.Graphics;
10import java.awt.Graphics2D;
11import java.awt.Point;
12import java.awt.Rectangle;
13import java.awt.event.ComponentAdapter;
14import java.awt.event.ComponentEvent;
15import java.awt.event.KeyEvent;
16import java.awt.event.MouseAdapter;
17import java.awt.event.MouseEvent;
18import java.awt.geom.Area;
19import java.awt.geom.GeneralPath;
20import java.awt.image.BufferedImage;
21import java.beans.PropertyChangeEvent;
22import java.beans.PropertyChangeListener;
23import java.util.ArrayList;
24import java.util.Collection;
25import java.util.Collections;
26import java.util.Comparator;
27import java.util.LinkedList;
28import java.util.List;
29import java.util.concurrent.CopyOnWriteArrayList;
30
31import javax.swing.AbstractButton;
32import javax.swing.ActionMap;
33import javax.swing.InputMap;
34import javax.swing.JOptionPane;
35import javax.swing.JPanel;
36
37import org.openstreetmap.josm.Main;
38import org.openstreetmap.josm.actions.AutoScaleAction;
39import org.openstreetmap.josm.actions.mapmode.MapMode;
40import org.openstreetmap.josm.data.Bounds;
41import org.openstreetmap.josm.data.Preferences.PreferenceChangeEvent;
42import org.openstreetmap.josm.data.Preferences.PreferenceChangedListener;
43import org.openstreetmap.josm.data.SelectionChangedListener;
44import org.openstreetmap.josm.data.coor.EastNorth;
45import org.openstreetmap.josm.data.coor.LatLon;
46import org.openstreetmap.josm.data.osm.DataSet;
47import org.openstreetmap.josm.data.osm.DataSource;
48import org.openstreetmap.josm.data.osm.OsmPrimitive;
49import org.openstreetmap.josm.data.osm.visitor.BoundingXYVisitor;
50import org.openstreetmap.josm.data.osm.visitor.paint.PaintColors;
51import org.openstreetmap.josm.data.osm.visitor.paint.relations.MultipolygonCache;
52import org.openstreetmap.josm.gui.layer.GpxLayer;
53import org.openstreetmap.josm.gui.layer.Layer;
54import org.openstreetmap.josm.gui.layer.MapViewPaintable;
55import org.openstreetmap.josm.gui.layer.OsmDataLayer;
56import org.openstreetmap.josm.gui.layer.markerlayer.MarkerLayer;
57import org.openstreetmap.josm.gui.layer.markerlayer.PlayHeadMarker;
58import org.openstreetmap.josm.tools.AudioPlayer;
59import org.openstreetmap.josm.tools.BugReportExceptionHandler;
60import org.openstreetmap.josm.tools.Shortcut;
61
62/**
63 * This is a component used in the {@link MapFrame} for browsing the map. It use is to
64 * provide the MapMode's enough capabilities to operate.<br/><br/>
65 *
66 * {@code MapView} holds meta-data about the data set currently displayed, as scale level,
67 * center point viewed, what scrolling mode or editing mode is selected or with
68 * what projection the map is viewed etc..<br/><br/>
69 *
70 * {@code MapView} is able to administrate several layers.
71 *
72 * @author imi
73 */
74public class MapView extends NavigatableComponent implements PropertyChangeListener, PreferenceChangedListener, OsmDataLayer.LayerStateChangeListener {
75
76 /**
77 * Interface to notify listeners of a layer change.
78 * @author imi
79 */
80 public interface LayerChangeListener {
81
82 /**
83 * Notifies this listener that the active layer has changed.
84 * @param oldLayer The previous active layer
85 * @param newLayer The new activer layer
86 */
87 void activeLayerChange(Layer oldLayer, Layer newLayer);
88
89 /**
90 * Notifies this listener that a layer has been added.
91 * @param newLayer The new added layer
92 */
93 void layerAdded(Layer newLayer);
94
95 /**
96 * Notifies this listener that a layer has been removed.
97 * @param oldLayer The old removed layer
98 */
99 void layerRemoved(Layer oldLayer);
100 }
101
102 public interface EditLayerChangeListener {
103 void editLayerChanged(OsmDataLayer oldLayer, OsmDataLayer newLayer);
104 }
105
106 public boolean viewportFollowing = false;
107
108 /**
109 * the layer listeners
110 */
111 private static final CopyOnWriteArrayList<LayerChangeListener> layerChangeListeners = new CopyOnWriteArrayList<LayerChangeListener>();
112 private static final CopyOnWriteArrayList<EditLayerChangeListener> editLayerChangeListeners = new CopyOnWriteArrayList<EditLayerChangeListener>();
113
114 /**
115 * Removes a layer change listener
116 *
117 * @param listener the listener. Ignored if null or already registered.
118 */
119 public static void removeLayerChangeListener(LayerChangeListener listener) {
120 layerChangeListeners.remove(listener);
121 }
122
123 public static void removeEditLayerChangeListener(EditLayerChangeListener listener) {
124 editLayerChangeListeners.remove(listener);
125 }
126
127 /**
128 * Adds a layer change listener
129 *
130 * @param listener the listener. Ignored if null or already registered.
131 */
132 public static void addLayerChangeListener(LayerChangeListener listener) {
133 if (listener != null) {
134 layerChangeListeners.addIfAbsent(listener);
135 }
136 }
137
138 /**
139 * Adds an edit layer change listener
140 *
141 * @param listener the listener. Ignored if null or already registered.
142 * @param initialFire Fire an edit-layer-changed-event right after adding
143 * the listener in case there is an edit layer present
144 */
145 public static void addEditLayerChangeListener(EditLayerChangeListener listener, boolean initialFire) {
146 addEditLayerChangeListener(listener);
147 if (initialFire) {
148 if (Main.isDisplayingMapView() && Main.map.mapView.getEditLayer() != null) {
149 fireEditLayerChanged(null, Main.map.mapView.getEditLayer());
150 }
151 }
152 }
153
154 /**
155 * Adds an edit layer change listener
156 *
157 * @param listener the listener. Ignored if null or already registered.
158 */
159 public static void addEditLayerChangeListener(EditLayerChangeListener listener) {
160 if (listener != null) {
161 editLayerChangeListeners.addIfAbsent(listener);
162 }
163 }
164
165 protected static void fireActiveLayerChanged(Layer oldLayer, Layer newLayer) {
166 for (LayerChangeListener l : layerChangeListeners) {
167 l.activeLayerChange(oldLayer, newLayer);
168 }
169 }
170
171 protected static void fireLayerAdded(Layer newLayer) {
172 for (MapView.LayerChangeListener l : MapView.layerChangeListeners) {
173 l.layerAdded(newLayer);
174 }
175 }
176
177 protected static void fireLayerRemoved(Layer layer) {
178 for (MapView.LayerChangeListener l : MapView.layerChangeListeners) {
179 l.layerRemoved(layer);
180 }
181 }
182
183 protected static void fireEditLayerChanged(OsmDataLayer oldLayer, OsmDataLayer newLayer) {
184 for (EditLayerChangeListener l : editLayerChangeListeners) {
185 l.editLayerChanged(oldLayer, newLayer);
186 }
187 }
188
189 /**
190 * A list of all layers currently loaded.
191 */
192 private final List<Layer> layers = new ArrayList<Layer>();
193 /**
194 * The play head marker: there is only one of these so it isn't in any specific layer
195 */
196 public PlayHeadMarker playHeadMarker = null;
197
198 /**
199 * The layer from the layers list that is currently active.
200 */
201 private Layer activeLayer;
202
203 private OsmDataLayer editLayer;
204
205 /**
206 * The last event performed by mouse.
207 */
208 public MouseEvent lastMEvent = new MouseEvent(this, 0, 0, 0, 0, 0, 0, false); // In case somebody reads it before first mouse move
209
210 private LinkedList<MapViewPaintable> temporaryLayers = new LinkedList<MapViewPaintable>();
211
212 private BufferedImage nonChangedLayersBuffer;
213 private BufferedImage offscreenBuffer;
214 // Layers that wasn't changed since last paint
215 private final List<Layer> nonChangedLayers = new ArrayList<Layer>();
216 private Layer changedLayer;
217 private int lastViewID;
218 private boolean paintPreferencesChanged = true;
219 private Rectangle lastClipBounds = new Rectangle();
220 private MapMover mapMover;
221
222 /**
223 * Constructs a new {@code MapView}.
224 * @param contentPane The content pane used to register shortcuts in its
225 * {@link InputMap} and {@link ActionMap}
226 * @param viewportData the initial viewport of the map. Can be null, then
227 * the viewport is derived from the layer data.
228 */
229 public MapView(final JPanel contentPane, final ViewportData viewportData) {
230 Main.pref.addPreferenceChangeListener(this);
231
232 addComponentListener(new ComponentAdapter(){
233 @Override public void componentResized(ComponentEvent e) {
234 removeComponentListener(this);
235
236 MapSlider zoomSlider = new MapSlider(MapView.this);
237 add(zoomSlider);
238 zoomSlider.setBounds(3, 0, 114, 30);
239
240 MapScaler scaler = new MapScaler(MapView.this);
241 add(scaler);
242 scaler.setLocation(10,30);
243
244 mapMover = new MapMover(MapView.this, contentPane);
245 if (viewportData != null) {
246 zoomTo(viewportData.getCenter(), viewportData.getScale());
247 } else {
248 OsmDataLayer layer = getEditLayer();
249 if (layer != null) {
250 if (!zoomToDataSetBoundingBox(layer.data)) {
251 // no bounding box defined
252 AutoScaleAction.autoScale("data");
253 }
254 } else {
255 AutoScaleAction.autoScale("layer");
256 }
257 }
258 }
259 });
260
261 // listend to selection changes to redraw the map
262 DataSet.addSelectionListener(repaintSelectionChangedListener);
263
264 //store the last mouse action
265 this.addMouseListener(new MouseAdapter() {
266 @Override public void mouseDragged(MouseEvent e) {
267 mouseMoved(e);
268 }
269 @Override public void mouseMoved(MouseEvent e) {
270 lastMEvent = e;
271 }
272 @Override
273 public void mousePressed(MouseEvent me) {
274 // focus the MapView component when mouse is pressed inside it
275 requestFocus();
276 }
277 });
278
279 if (Shortcut.findShortcut(KeyEvent.VK_TAB, 0)!=null)
280 {
281 setFocusTraversalKeysEnabled(false);
282 }
283 }
284
285 // remebered geometry of the component
286 private Dimension oldSize = null;
287 private Point oldLoc = null;
288
289 /*
290 * Call this method to keep map position on screen during next repaint
291 */
292 public void rememberLastPositionOnScreen() {
293 oldSize = getSize();
294 oldLoc = getLocationOnScreen();
295 }
296
297 /**
298 * Adds a GPX layer. A GPX layer is added below the lowest data layer.
299 *
300 * @param layer the GPX layer
301 */
302 protected void addGpxLayer(GpxLayer layer) {
303 if (layers.isEmpty()) {
304 layers.add(layer);
305 return;
306 }
307 for (int i=layers.size()-1; i>= 0; i--) {
308 if (layers.get(i) instanceof OsmDataLayer) {
309 if (i == layers.size()-1) {
310 layers.add(layer);
311 } else {
312 layers.add(i+1, layer);
313 }
314 return;
315 }
316 }
317 layers.add(0, layer);
318 }
319
320 /**
321 * Add a layer to the current MapView. The layer will be added at topmost
322 * position.
323 * @param layer The layer to add
324 */
325 public void addLayer(Layer layer) {
326 if (layer instanceof MarkerLayer && playHeadMarker == null) {
327 playHeadMarker = PlayHeadMarker.create();
328 }
329
330 if (layer instanceof GpxLayer) {
331 addGpxLayer((GpxLayer)layer);
332 } else if (layers.isEmpty()) {
333 layers.add(layer);
334 } else if (layer.isBackgroundLayer()) {
335 int i = 0;
336 for (; i < layers.size(); i++) {
337 if (layers.get(i).isBackgroundLayer()) {
338 break;
339 }
340 }
341 layers.add(i, layer);
342 } else {
343 layers.add(0, layer);
344 }
345 fireLayerAdded(layer);
346 boolean isOsmDataLayer = layer instanceof OsmDataLayer;
347 if (isOsmDataLayer) {
348 ((OsmDataLayer)layer).addLayerStateChangeListener(this);
349 }
350 boolean callSetActiveLayer = isOsmDataLayer || activeLayer == null;
351 if (callSetActiveLayer) {
352 // autoselect the new layer
353 setActiveLayer(layer); // also repaints this MapView
354 }
355 layer.addPropertyChangeListener(this);
356 Main.addProjectionChangeListener(layer);
357 AudioPlayer.reset();
358 if (!callSetActiveLayer) {
359 repaint();
360 }
361 }
362
363 @Override
364 protected DataSet getCurrentDataSet() {
365 if (editLayer != null)
366 return editLayer.data;
367 else
368 return null;
369 }
370
371 /**
372 * Replies true if the active layer is drawable.
373 *
374 * @return true if the active layer is drawable, false otherwise
375 */
376 public boolean isActiveLayerDrawable() {
377 return editLayer != null;
378 }
379
380 /**
381 * Replies true if the active layer is visible.
382 *
383 * @return true if the active layer is visible, false otherwise
384 */
385 public boolean isActiveLayerVisible() {
386 return isActiveLayerDrawable() && editLayer.isVisible();
387 }
388
389 /**
390 * Determines the next active data layer according to the following
391 * rules:
392 * <ul>
393 * <li>if there is at least one {@link OsmDataLayer} the first one
394 * becomes active</li>
395 * <li>otherwise, the top most layer of any type becomes active</li>
396 * </ul>
397 *
398 * @return the next active data layer
399 */
400 protected Layer determineNextActiveLayer(List<Layer> layersList) {
401 // First look for data layer
402 for (Layer layer:layersList) {
403 if (layer instanceof OsmDataLayer)
404 return layer;
405 }
406
407 // Then any layer
408 if (!layersList.isEmpty())
409 return layersList.get(0);
410
411 // and then give up
412 return null;
413
414 }
415
416 /**
417 * Remove the layer from the mapview. If the layer was in the list before,
418 * an LayerChange event is fired.
419 * @param layer The layer to remove
420 */
421 public void removeLayer(Layer layer) {
422 List<Layer> layersList = new ArrayList<Layer>(layers);
423
424 if (!layersList.remove(layer))
425 return;
426
427 setEditLayer(layersList);
428
429 if (layer == activeLayer) {
430 setActiveLayer(determineNextActiveLayer(layersList), false);
431 }
432
433 if (layer instanceof OsmDataLayer) {
434 ((OsmDataLayer)layer).removeLayerPropertyChangeListener(this);
435 }
436
437 layers.remove(layer);
438 Main.removeProjectionChangeListener(layer);
439 fireLayerRemoved(layer);
440 layer.removePropertyChangeListener(this);
441 layer.destroy();
442 AudioPlayer.reset();
443 repaint();
444 }
445
446 private boolean virtualNodesEnabled = false;
447
448 public void setVirtualNodesEnabled(boolean enabled) {
449 if(virtualNodesEnabled != enabled) {
450 virtualNodesEnabled = enabled;
451 repaint();
452 }
453 }
454 public boolean isVirtualNodesEnabled() {
455 return virtualNodesEnabled;
456 }
457
458 /**
459 * Moves the layer to the given new position. No event is fired, but repaints
460 * according to the new Z-Order of the layers.
461 *
462 * @param layer The layer to move
463 * @param pos The new position of the layer
464 */
465 public void moveLayer(Layer layer, int pos) {
466 int curLayerPos = layers.indexOf(layer);
467 if (curLayerPos == -1)
468 throw new IllegalArgumentException(tr("Layer not in list."));
469 if (pos == curLayerPos)
470 return; // already in place.
471 layers.remove(curLayerPos);
472 if (pos >= layers.size()) {
473 layers.add(layer);
474 } else {
475 layers.add(pos, layer);
476 }
477 setEditLayer(layers);
478 AudioPlayer.reset();
479 repaint();
480 }
481
482 public int getLayerPos(Layer layer) {
483 int curLayerPos = layers.indexOf(layer);
484 if (curLayerPos == -1)
485 throw new IllegalArgumentException(tr("Layer not in list."));
486 return curLayerPos;
487 }
488
489 /**
490 * Creates a list of the visible layers in Z-Order, the layer with the lowest Z-Order
491 * first, layer with the highest Z-Order last.
492 *
493 * @return a list of the visible in Z-Order, the layer with the lowest Z-Order
494 * first, layer with the highest Z-Order last.
495 */
496 protected List<Layer> getVisibleLayersInZOrder() {
497 ArrayList<Layer> ret = new ArrayList<Layer>();
498 for (Layer l: layers) {
499 if (l.isVisible()) {
500 ret.add(l);
501 }
502 }
503 // sort according to position in the list of layers, with one exception:
504 // an active data layer always becomes a higher Z-Order than all other
505 // data layers
506 //
507 Collections.sort(
508 ret,
509 new Comparator<Layer>() {
510 @Override public int compare(Layer l1, Layer l2) {
511 if (l1 instanceof OsmDataLayer && l2 instanceof OsmDataLayer) {
512 if (l1 == getActiveLayer()) return -1;
513 if (l2 == getActiveLayer()) return 1;
514 return Integer.valueOf(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
515 } else
516 return Integer.valueOf(layers.indexOf(l1)).compareTo(layers.indexOf(l2));
517 }
518 }
519 );
520 Collections.reverse(ret);
521 return ret;
522 }
523
524 private void paintLayer(Layer layer, Graphics2D g, Bounds box) {
525 if (layer.getOpacity() < 1) {
526 g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,(float)layer.getOpacity()));
527 }
528 layer.paint(g, this, box);
529 g.setPaintMode();
530 }
531
532 /**
533 * Draw the component.
534 */
535 @Override public void paint(Graphics g) {
536 if (BugReportExceptionHandler.exceptionHandlingInProgress())
537 return;
538
539 if (center == null)
540 return; // no data loaded yet.
541
542 // if the position was remembered, we need to adjust center once before repainting
543 if (oldLoc != null && oldSize != null) {
544 Point l1 = getLocationOnScreen();
545 final EastNorth newCenter = new EastNorth(
546 center.getX()+ (l1.x-oldLoc.x - (oldSize.width-getWidth())/2.0)*getScale(),
547 center.getY()+ (oldLoc.y-l1.y + (oldSize.height-getHeight())/2.0)*getScale()
548 );
549 oldLoc = null; oldSize = null;
550 zoomTo(newCenter);
551 }
552
553 List<Layer> visibleLayers = getVisibleLayersInZOrder();
554
555 int nonChangedLayersCount = 0;
556 for (Layer l: visibleLayers) {
557 if (l.isChanged() || l == changedLayer) {
558 break;
559 } else {
560 nonChangedLayersCount++;
561 }
562 }
563
564 boolean canUseBuffer;
565
566 synchronized (this) {
567 canUseBuffer = !paintPreferencesChanged;
568 paintPreferencesChanged = false;
569 }
570 canUseBuffer = canUseBuffer && nonChangedLayers.size() <= nonChangedLayersCount &&
571 lastViewID == getViewID() && lastClipBounds.contains(g.getClipBounds());
572 if (canUseBuffer) {
573 for (int i=0; i<nonChangedLayers.size(); i++) {
574 if (visibleLayers.get(i) != nonChangedLayers.get(i)) {
575 canUseBuffer = false;
576 break;
577 }
578 }
579 }
580
581 if (null == offscreenBuffer || offscreenBuffer.getWidth() != getWidth() || offscreenBuffer.getHeight() != getHeight()) {
582 offscreenBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR);
583 }
584
585 Graphics2D tempG = offscreenBuffer.createGraphics();
586 tempG.setClip(g.getClip());
587 Bounds box = getLatLonBounds(g.getClipBounds());
588
589 if (!canUseBuffer || nonChangedLayersBuffer == null) {
590 if (null == nonChangedLayersBuffer || nonChangedLayersBuffer.getWidth() != getWidth() || nonChangedLayersBuffer.getHeight() != getHeight()) {
591 nonChangedLayersBuffer = new BufferedImage(getWidth(), getHeight(), BufferedImage.TYPE_3BYTE_BGR);
592 }
593 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
594 g2.setClip(g.getClip());
595 g2.setColor(PaintColors.getBackgroundColor());
596 g2.fillRect(0, 0, getWidth(), getHeight());
597
598 for (int i=0; i<nonChangedLayersCount; i++) {
599 paintLayer(visibleLayers.get(i),g2, box);
600 }
601 } else {
602 // Maybe there were more unchanged layers then last time - draw them to buffer
603 if (nonChangedLayers.size() != nonChangedLayersCount) {
604 Graphics2D g2 = nonChangedLayersBuffer.createGraphics();
605 g2.setClip(g.getClip());
606 for (int i=nonChangedLayers.size(); i<nonChangedLayersCount; i++) {
607 paintLayer(visibleLayers.get(i),g2, box);
608 }
609 }
610 }
611
612 nonChangedLayers.clear();
613 changedLayer = null;
614 for (int i=0; i<nonChangedLayersCount; i++) {
615 nonChangedLayers.add(visibleLayers.get(i));
616 }
617 lastViewID = getViewID();
618 lastClipBounds = g.getClipBounds();
619
620 tempG.drawImage(nonChangedLayersBuffer, 0, 0, null);
621
622 for (int i=nonChangedLayersCount; i<visibleLayers.size(); i++) {
623 paintLayer(visibleLayers.get(i),tempG, box);
624 }
625
626 for (MapViewPaintable mvp : temporaryLayers) {
627 mvp.paint(tempG, this, box);
628 }
629
630 // draw world borders
631 tempG.setColor(Color.WHITE);
632 Bounds b = getProjection().getWorldBoundsLatLon();
633 double lat = b.getMin().lat();
634 double lon = b.getMin().lon();
635
636 Point p = getPoint(b.getMin());
637
638 GeneralPath path = new GeneralPath();
639
640 path.moveTo(p.x, p.y);
641 double max = b.getMax().lat();
642 for(; lat <= max; lat += 1.0)
643 {
644 p = getPoint(new LatLon(lat >= max ? max : lat, lon));
645 path.lineTo(p.x, p.y);
646 }
647 lat = max; max = b.getMax().lon();
648 for(; lon <= max; lon += 1.0)
649 {
650 p = getPoint(new LatLon(lat, lon >= max ? max : lon));
651 path.lineTo(p.x, p.y);
652 }
653 lon = max; max = b.getMin().lat();
654 for(; lat >= max; lat -= 1.0)
655 {
656 p = getPoint(new LatLon(lat <= max ? max : lat, lon));
657 path.lineTo(p.x, p.y);
658 }
659 lat = max; max = b.getMin().lon();
660 for(; lon >= max; lon -= 1.0)
661 {
662 p = getPoint(new LatLon(lat, lon <= max ? max : lon));
663 path.lineTo(p.x, p.y);
664 }
665
666 int w = getWidth();
667 int h = getHeight();
668
669 // Work around OpenJDK having problems when drawing out of bounds
670 final Area border = new Area(path);
671 // Make the viewport 1px larger in every direction to prevent an
672 // additional 1px border when zooming in
673 final Area viewport = new Area(new Rectangle(-1, -1, w + 2, h + 2));
674 border.intersect(viewport);
675 tempG.draw(border);
676
677 if (Main.isDisplayingMapView() && Main.map.filterDialog != null) {
678 Main.map.filterDialog.drawOSDText(tempG);
679 }
680
681 if (playHeadMarker != null) {
682 playHeadMarker.paint(tempG, this);
683 }
684
685 g.drawImage(offscreenBuffer, 0, 0, null);
686 super.paint(g);
687 }
688
689 /**
690 * Set the new dimension to the view.
691 */
692 public void recalculateCenterScale(BoundingXYVisitor box) {
693 if (box == null) {
694 box = new BoundingXYVisitor();
695 }
696 if (box.getBounds() == null) {
697 box.visit(getProjection().getWorldBoundsLatLon());
698 }
699 if (!box.hasExtend()) {
700 box.enlargeBoundingBox();
701 }
702
703 zoomTo(box.getBounds());
704 }
705
706 /**
707 * @return An unmodifiable collection of all layers
708 */
709 public Collection<Layer> getAllLayers() {
710 return Collections.unmodifiableCollection(new ArrayList<Layer>(layers));
711 }
712
713 /**
714 * @return An unmodifiable ordered list of all layers
715 */
716 public List<Layer> getAllLayersAsList() {
717 return Collections.unmodifiableList(new ArrayList<Layer>(layers));
718 }
719
720 /**
721 * Replies an unmodifiable list of layers of a certain type.
722 *
723 * Example:
724 * <pre>
725 * List<WMSLayer> wmsLayers = getLayersOfType(WMSLayer.class);
726 * </pre>
727 *
728 * @return an unmodifiable list of layers of a certain type.
729 */
730 public <T> List<T> getLayersOfType(Class<T> ofType) {
731 ArrayList<T> ret = new ArrayList<T>();
732 for (Layer layer : getAllLayersAsList()) {
733 if (ofType.isInstance(layer)) {
734 ret.add(ofType.cast(layer));
735 }
736 }
737 return ret;
738 }
739
740 /**
741 * Replies the number of layers managed by this mav view
742 *
743 * @return the number of layers managed by this mav view
744 */
745 public int getNumLayers() {
746 return layers.size();
747 }
748
749 /**
750 * Replies true if there is at least one layer in this map view
751 *
752 * @return true if there is at least one layer in this map view
753 */
754 public boolean hasLayers() {
755 return getNumLayers() > 0;
756 }
757
758 private void setEditLayer(List<Layer> layersList) {
759 OsmDataLayer newEditLayer = layersList.contains(editLayer)?editLayer:null;
760 OsmDataLayer oldEditLayer = editLayer;
761
762 // Find new edit layer
763 if (activeLayer != editLayer || !layersList.contains(editLayer)) {
764 if (activeLayer instanceof OsmDataLayer && layersList.contains(activeLayer)) {
765 newEditLayer = (OsmDataLayer) activeLayer;
766 } else {
767 for (Layer layer:layersList) {
768 if (layer instanceof OsmDataLayer) {
769 newEditLayer = (OsmDataLayer) layer;
770 break;
771 }
772 }
773 }
774 }
775
776 // Set new edit layer
777 if (newEditLayer != editLayer) {
778 if (newEditLayer == null) {
779 getCurrentDataSet().setSelected();
780 }
781
782 editLayer = newEditLayer;
783 fireEditLayerChanged(oldEditLayer, newEditLayer);
784 refreshTitle();
785 }
786
787 }
788
789 /**
790 * Sets the active layer to <code>layer</code>. If <code>layer</code> is an instance
791 * of {@link OsmDataLayer} also sets {@link #editLayer} to <code>layer</code>.
792 *
793 * @param layer the layer to be activate; must be one of the layers in the list of layers
794 * @exception IllegalArgumentException thrown if layer is not in the lis of layers
795 */
796 public void setActiveLayer(Layer layer) {
797 setActiveLayer(layer, true);
798 }
799
800 private void setActiveLayer(Layer layer, boolean setEditLayer) {
801 if (layer != null && !layers.contains(layer))
802 throw new IllegalArgumentException(tr("Layer ''{0}'' must be in list of layers", layer.toString()));
803
804 if (layer == activeLayer)
805 return;
806
807 Layer old = activeLayer;
808 activeLayer = layer;
809 if (setEditLayer) {
810 setEditLayer(layers);
811 }
812 fireActiveLayerChanged(old, layer);
813
814 /* This only makes the buttons look disabled. Disabling the actions as well requires
815 * the user to re-select the tool after i.e. moving a layer. While testing I found
816 * that I switch layers and actions at the same time and it was annoying to mind the
817 * order. This way it works as visual clue for new users */
818 for (AbstractButton b: Main.map.allMapModeButtons) {
819 MapMode mode = (MapMode)b.getAction();
820 if (mode.layerIsSupported(layer)) {
821 Main.registerActionShortcut(mode, mode.getShortcut()); //fix #6876
822 b.setEnabled(true);
823 } else {
824 Main.unregisterShortcut(mode.getShortcut());
825 b.setEnabled(false);
826 }
827 }
828 AudioPlayer.reset();
829 repaint();
830 }
831
832 /**
833 * Replies the currently active layer
834 *
835 * @return the currently active layer (may be null)
836 */
837 public Layer getActiveLayer() {
838 return activeLayer;
839 }
840
841 /**
842 * Replies the current edit layer, if any
843 *
844 * @return the current edit layer. May be null.
845 */
846 public OsmDataLayer getEditLayer() {
847 return editLayer;
848 }
849
850 /**
851 * replies true if the list of layers managed by this map view contain layer
852 *
853 * @param layer the layer
854 * @return true if the list of layers managed by this map view contain layer
855 */
856 public boolean hasLayer(Layer layer) {
857 return layers.contains(layer);
858 }
859
860 /**
861 * Tries to zoom to the download boundingbox[es] of the current edit layer
862 * (aka {@link OsmDataLayer}). If the edit layer has multiple download bounding
863 * boxes it zooms to a large virtual bounding box containing all smaller ones.
864 *
865 * @return <code>true</code> if a zoom operation has been performed
866 */
867 public boolean zoomToDataSetBoundingBox(DataSet ds) {
868 // In case we already have an existing data layer ...
869 OsmDataLayer layer= getEditLayer();
870 if (layer == null)
871 return false;
872 Collection<DataSource> dataSources = ds.dataSources;
873 // ... with bounding box[es] of data loaded from OSM or a file...
874 BoundingXYVisitor bbox = new BoundingXYVisitor();
875 for (DataSource source : dataSources) {
876 bbox.visit(source.bounds);
877 }
878 if (bbox.hasExtend()) {
879 // ... we zoom to it's bounding box
880 recalculateCenterScale(bbox);
881 return true;
882 }
883 return false;
884 }
885
886 public boolean addTemporaryLayer(MapViewPaintable mvp) {
887 if (temporaryLayers.contains(mvp)) return false;
888 return temporaryLayers.add(mvp);
889 }
890
891 public boolean removeTemporaryLayer(MapViewPaintable mvp) {
892 return temporaryLayers.remove(mvp);
893 }
894
895 @Override
896 public void propertyChange(PropertyChangeEvent evt) {
897 if (evt.getPropertyName().equals(Layer.VISIBLE_PROP)) {
898 repaint();
899 } else if (evt.getPropertyName().equals(Layer.OPACITY_PROP)) {
900 Layer l = (Layer)evt.getSource();
901 if (l.isVisible()) {
902 changedLayer = l;
903 repaint();
904 }
905 } else if (evt.getPropertyName().equals(OsmDataLayer.REQUIRES_SAVE_TO_DISK_PROP)
906 || evt.getPropertyName().equals(OsmDataLayer.REQUIRES_UPLOAD_TO_SERVER_PROP)) {
907 OsmDataLayer layer = (OsmDataLayer)evt.getSource();
908 if (layer == getEditLayer()) {
909 refreshTitle();
910 }
911 }
912 }
913
914 protected void refreshTitle() {
915 boolean dirty = editLayer != null && (editLayer.requiresSaveToFile() || (editLayer.requiresUploadToServer() && !editLayer.isUploadDiscouraged()));
916 if (dirty) {
917 JOptionPane.getFrameForComponent(Main.parent).setTitle("* " + tr("Java OpenStreetMap Editor"));
918 } else {
919 JOptionPane.getFrameForComponent(Main.parent).setTitle(tr("Java OpenStreetMap Editor"));
920 }
921 }
922
923 @Override
924 public void preferenceChanged(PreferenceChangeEvent e) {
925 synchronized (this) {
926 paintPreferencesChanged = true;
927 }
928 }
929
930 private SelectionChangedListener repaintSelectionChangedListener = new SelectionChangedListener(){
931 @Override public void selectionChanged(Collection<? extends OsmPrimitive> newSelection) {
932 repaint();
933 }
934 };
935
936 public void destroy() {
937 Main.pref.removePreferenceChangeListener(this);
938 DataSet.removeSelectionListener(repaintSelectionChangedListener);
939 MultipolygonCache.getInstance().clear(this);
940 if (mapMover != null) {
941 mapMover.destroy();
942 }
943 }
944
945 @Override
946 public void uploadDiscouragedChanged(OsmDataLayer layer, boolean newValue) {
947 if (layer == getEditLayer()) {
948 refreshTitle();
949 }
950 }
951}
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