source: josm/trunk/src/org/openstreetmap/josm/actions/AutoScaleAction.java@ 8510

Last change on this file since 8510 was 8510, checked in by Don-vip, 11 years ago

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1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.actions;
3
4import static org.openstreetmap.josm.gui.help.HelpUtil.ht;
5import static org.openstreetmap.josm.tools.I18n.marktr;
6import static org.openstreetmap.josm.tools.I18n.tr;
7
8import java.awt.event.ActionEvent;
9import java.awt.event.KeyEvent;
10import java.util.ArrayList;
11import java.util.Arrays;
12import java.util.Collection;
13import java.util.Collections;
14import java.util.HashSet;
15import java.util.List;
16
17import javax.swing.JOptionPane;
18import javax.swing.event.ListSelectionEvent;
19import javax.swing.event.ListSelectionListener;
20import javax.swing.event.TreeSelectionEvent;
21import javax.swing.event.TreeSelectionListener;
22
23import org.openstreetmap.josm.Main;
24import org.openstreetmap.josm.data.Bounds;
25import org.openstreetmap.josm.data.DataSource;
26import org.openstreetmap.josm.data.conflict.Conflict;
27import org.openstreetmap.josm.data.osm.DataSet;
28import org.openstreetmap.josm.data.osm.OsmPrimitive;
29import org.openstreetmap.josm.data.osm.visitor.BoundingXYVisitor;
30import org.openstreetmap.josm.data.validation.TestError;
31import org.openstreetmap.josm.gui.MapFrame;
32import org.openstreetmap.josm.gui.MapFrameListener;
33import org.openstreetmap.josm.gui.MapView;
34import org.openstreetmap.josm.gui.dialogs.LayerListDialog;
35import org.openstreetmap.josm.gui.dialogs.ValidatorDialog.ValidatorBoundingXYVisitor;
36import org.openstreetmap.josm.gui.layer.Layer;
37import org.openstreetmap.josm.tools.Shortcut;
38
39/**
40 * Toggles the autoScale feature of the mapView
41 * @author imi
42 */
43public class AutoScaleAction extends JosmAction {
44
45 public static final Collection<String> MODES = Collections.unmodifiableList(Arrays.asList(
46 marktr(/* ICON(dialogs/autoscale/) */ "data"),
47 marktr(/* ICON(dialogs/autoscale/) */ "layer"),
48 marktr(/* ICON(dialogs/autoscale/) */ "selection"),
49 marktr(/* ICON(dialogs/autoscale/) */ "conflict"),
50 marktr(/* ICON(dialogs/autoscale/) */ "download"),
51 marktr(/* ICON(dialogs/autoscale/) */ "problem"),
52 marktr(/* ICON(dialogs/autoscale/) */ "previous"),
53 marktr(/* ICON(dialogs/autoscale/) */ "next")));
54
55 private final String mode;
56
57 protected transient ZoomChangeAdapter zoomChangeAdapter;
58 protected transient MapFrameAdapter mapFrameAdapter;
59 /** Time of last zoom to bounds action */
60 protected long lastZoomTime = -1;
61 /** Last zommed bounds */
62 protected int lastZoomArea = -1;
63
64 /**
65 * Zooms the current map view to the currently selected primitives.
66 * Does nothing if there either isn't a current map view or if there isn't a current data
67 * layer.
68 *
69 */
70 public static void zoomToSelection() {
71 if (Main.main == null || !Main.main.hasEditLayer())
72 return;
73 Collection<OsmPrimitive> sel = Main.main.getEditLayer().data.getSelected();
74 if (sel.isEmpty()) {
75 JOptionPane.showMessageDialog(
76 Main.parent,
77 tr("Nothing selected to zoom to."),
78 tr("Information"),
79 JOptionPane.INFORMATION_MESSAGE);
80 return;
81 }
82 zoomTo(sel);
83 }
84
85 public static void zoomTo(Collection<OsmPrimitive> sel) {
86 BoundingXYVisitor bboxCalculator = new BoundingXYVisitor();
87 bboxCalculator.computeBoundingBox(sel);
88 // increase bbox by 0.001 degrees on each side. this is required
89 // especially if the bbox contains one single node, but helpful
90 // in most other cases as well.
91 bboxCalculator.enlargeBoundingBox();
92 if (bboxCalculator.getBounds() != null) {
93 Main.map.mapView.zoomTo(bboxCalculator);
94 }
95 }
96
97 public static void autoScale(String mode) {
98 new AutoScaleAction(mode, false).autoScale();
99 }
100
101 private static int getModeShortcut(String mode) {
102 int shortcut = -1;
103
104 // TODO: convert this to switch/case and make sure the parsing still works
105 /* leave as single line for shortcut overview parsing! */
106 if (mode.equals("data")) { shortcut = KeyEvent.VK_1; }
107 else if (mode.equals("layer")) { shortcut = KeyEvent.VK_2; }
108 else if (mode.equals("selection")) { shortcut = KeyEvent.VK_3; }
109 else if (mode.equals("conflict")) { shortcut = KeyEvent.VK_4; }
110 else if (mode.equals("download")) { shortcut = KeyEvent.VK_5; }
111 else if (mode.equals("problem")) { shortcut = KeyEvent.VK_6; }
112 else if (mode.equals("previous")) { shortcut = KeyEvent.VK_8; }
113 else if (mode.equals("next")) { shortcut = KeyEvent.VK_9; }
114
115 return shortcut;
116 }
117
118 /**
119 * Constructs a new {@code AutoScaleAction}.
120 * @param mode The autoscale mode (one of {@link AutoScaleAction#MODES})
121 * @param marker Used only to differentiate from default constructor
122 */
123 private AutoScaleAction(String mode, boolean marker) {
124 super(false);
125 this.mode = mode;
126 }
127
128 /**
129 * Constructs a new {@code AutoScaleAction}.
130 * @param mode The autoscale mode (one of {@link AutoScaleAction#MODES})
131 */
132 public AutoScaleAction(final String mode) {
133 super(tr("Zoom to {0}", tr(mode)), "dialogs/autoscale/" + mode, tr("Zoom the view to {0}.", tr(mode)),
134 Shortcut.registerShortcut("view:zoom" + mode, tr("View: {0}", tr("Zoom to {0}", tr(mode))),
135 getModeShortcut(mode), Shortcut.DIRECT), true, null, false);
136 String modeHelp = Character.toUpperCase(mode.charAt(0)) + mode.substring(1);
137 putValue("help", "Action/AutoScale/" + modeHelp);
138 this.mode = mode;
139 switch (mode) {
140 case "data":
141 putValue("help", ht("/Action/ZoomToData"));
142 break;
143 case "layer":
144 putValue("help", ht("/Action/ZoomToLayer"));
145 break;
146 case "selection":
147 putValue("help", ht("/Action/ZoomToSelection"));
148 break;
149 case "conflict":
150 putValue("help", ht("/Action/ZoomToConflict"));
151 break;
152 case "problem":
153 putValue("help", ht("/Action/ZoomToProblem"));
154 break;
155 case "download":
156 putValue("help", ht("/Action/ZoomToDownload"));
157 break;
158 case "previous":
159 putValue("help", ht("/Action/ZoomToPrevious"));
160 break;
161 case "next":
162 putValue("help", ht("/Action/ZoomToNext"));
163 break;
164 default:
165 throw new IllegalArgumentException("Unknown mode: " + mode);
166 }
167 installAdapters();
168 }
169
170 public void autoScale() {
171 if (Main.isDisplayingMapView()) {
172 switch (mode) {
173 case "previous":
174 Main.map.mapView.zoomPrevious();
175 break;
176 case "next":
177 Main.map.mapView.zoomNext();
178 break;
179 default:
180 BoundingXYVisitor bbox = getBoundingBox();
181 if (bbox != null && bbox.getBounds() != null) {
182 Main.map.mapView.zoomTo(bbox);
183 }
184 }
185 }
186 putValue("active", true);
187 }
188
189 @Override
190 public void actionPerformed(ActionEvent e) {
191 autoScale();
192 }
193
194 /**
195 * Replies the first selected layer in the layer list dialog. null, if no
196 * such layer exists, either because the layer list dialog is not yet created
197 * or because no layer is selected.
198 *
199 * @return the first selected layer in the layer list dialog
200 */
201 protected Layer getFirstSelectedLayer() {
202 List<Layer> layers = LayerListDialog.getInstance().getModel().getSelectedLayers();
203 if (layers.isEmpty())
204 return null;
205 return layers.get(0);
206 }
207
208 private BoundingXYVisitor getBoundingBox() {
209 BoundingXYVisitor v = "problem".equals(mode) ? new ValidatorBoundingXYVisitor() : new BoundingXYVisitor();
210
211 switch (mode) {
212 case "problem":
213 TestError error = Main.map.validatorDialog.getSelectedError();
214 if (error == null)
215 return null;
216 ((ValidatorBoundingXYVisitor) v).visit(error);
217 if (v.getBounds() == null)
218 return null;
219 v.enlargeBoundingBox(Main.pref.getDouble("validator.zoom-enlarge-bbox", 0.0002));
220 break;
221 case "data":
222 for (Layer l : Main.map.mapView.getAllLayers()) {
223 l.visitBoundingBox(v);
224 }
225 break;
226 case "layer":
227 if (Main.main.getActiveLayer() == null)
228 return null;
229 // try to zoom to the first selected layer
230 Layer l = getFirstSelectedLayer();
231 if (l == null)
232 return null;
233 l.visitBoundingBox(v);
234 break;
235 case "selection":
236 case "conflict":
237 Collection<OsmPrimitive> sel = new HashSet<>();
238 if ("selection".equals(mode)) {
239 sel = getCurrentDataSet().getSelected();
240 } else {
241 Conflict<? extends OsmPrimitive> c = Main.map.conflictDialog.getSelectedConflict();
242 if (c != null) {
243 sel.add(c.getMy());
244 } else if (Main.map.conflictDialog.getConflicts() != null) {
245 sel = Main.map.conflictDialog.getConflicts().getMyConflictParties();
246 }
247 }
248 if (sel.isEmpty()) {
249 JOptionPane.showMessageDialog(
250 Main.parent,
251 "selection".equals(mode) ? tr("Nothing selected to zoom to.") : tr("No conflicts to zoom to"),
252 tr("Information"),
253 JOptionPane.INFORMATION_MESSAGE);
254 return null;
255 }
256 for (OsmPrimitive osm : sel) {
257 osm.accept(v);
258 }
259
260 // Increase the bounding box by up to 100% to give more context.
261 v.enlargeBoundingBoxLogarithmically(100);
262 // Make the bounding box at least 100 meter wide to
263 // ensure reasonable zoom level when zooming onto single nodes.
264 v.enlargeToMinSize(Main.pref.getDouble("zoom_to_selection_min_size_in_meter", 100));
265 break;
266 case "download":
267
268 if (lastZoomTime > 0 && System.currentTimeMillis() - lastZoomTime > Main.pref.getLong("zoom.bounds.reset.time", 10*1000)) {
269 lastZoomTime = -1;
270 }
271 DataSet dataset = Main.main.getCurrentDataSet();
272 if (dataset != null) {
273 List<DataSource> dataSources = new ArrayList<>(dataset.getDataSources());
274 int s = dataSources.size();
275 if (s > 0) {
276 if (lastZoomTime == -1 || lastZoomArea == -1 || lastZoomArea > s) {
277 lastZoomArea = s-1;
278 v.visit(dataSources.get(lastZoomArea).bounds);
279 } else if (lastZoomArea > 0) {
280 lastZoomArea -= 1;
281 v.visit(dataSources.get(lastZoomArea).bounds);
282 } else {
283 lastZoomArea = -1;
284 v.visit(new Bounds(Main.main.getCurrentDataSet().getDataSourceArea().getBounds2D()));
285 }
286 lastZoomTime = System.currentTimeMillis();
287 } else {
288 lastZoomTime = -1;
289 lastZoomArea = -1;
290 }
291 }
292 break;
293 }
294 return v;
295 }
296
297 @Override
298 protected void updateEnabledState() {
299 switch (mode) {
300 case "selection":
301 setEnabled(getCurrentDataSet() != null && !getCurrentDataSet().getSelected().isEmpty());
302 break;
303 case "layer":
304 if (!Main.isDisplayingMapView() || Main.map.mapView.getAllLayersAsList().isEmpty()) {
305 setEnabled(false);
306 } else {
307 // FIXME: should also check for whether a layer is selected in the layer list dialog
308 setEnabled(true);
309 }
310 break;
311 case "conflict":
312 setEnabled(Main.map != null && Main.map.conflictDialog.getSelectedConflict() != null);
313 break;
314 case "problem":
315 setEnabled(Main.map != null && Main.map.validatorDialog.getSelectedError() != null);
316 break;
317 case "previous":
318 setEnabled(Main.isDisplayingMapView() && Main.map.mapView.hasZoomUndoEntries());
319 break;
320 case "next":
321 setEnabled(Main.isDisplayingMapView() && Main.map.mapView.hasZoomRedoEntries());
322 break;
323 default:
324 setEnabled(Main.isDisplayingMapView() && Main.map.mapView.hasLayers());
325 }
326 }
327
328 @Override
329 protected void updateEnabledState(Collection<? extends OsmPrimitive> selection) {
330 if ("selection".equals(mode)) {
331 setEnabled(selection != null && !selection.isEmpty());
332 }
333 }
334
335 @Override
336 protected final void installAdapters() {
337 super.installAdapters();
338 // make this action listen to zoom and mapframe change events
339 //
340 MapView.addZoomChangeListener(zoomChangeAdapter = new ZoomChangeAdapter());
341 Main.addMapFrameListener(mapFrameAdapter = new MapFrameAdapter());
342 initEnabledState();
343 }
344
345 /**
346 * Adapter for zoom change events
347 */
348 private class ZoomChangeAdapter implements MapView.ZoomChangeListener {
349 @Override
350 public void zoomChanged() {
351 updateEnabledState();
352 }
353 }
354
355 /**
356 * Adapter for MapFrame change events
357 */
358 private class MapFrameAdapter implements MapFrameListener {
359 private ListSelectionListener conflictSelectionListener;
360 private TreeSelectionListener validatorSelectionListener;
361
362 public MapFrameAdapter() {
363 if ("conflict".equals(mode)) {
364 conflictSelectionListener = new ListSelectionListener() {
365 @Override
366 public void valueChanged(ListSelectionEvent e) {
367 updateEnabledState();
368 }
369 };
370 } else if ("problem".equals(mode)) {
371 validatorSelectionListener = new TreeSelectionListener() {
372 @Override
373 public void valueChanged(TreeSelectionEvent e) {
374 updateEnabledState();
375 }
376 };
377 }
378 }
379
380 @Override
381 public void mapFrameInitialized(MapFrame oldFrame, MapFrame newFrame) {
382 if (conflictSelectionListener != null) {
383 if (newFrame != null) {
384 newFrame.conflictDialog.addListSelectionListener(conflictSelectionListener);
385 } else if (oldFrame != null) {
386 oldFrame.conflictDialog.removeListSelectionListener(conflictSelectionListener);
387 }
388 } else if (validatorSelectionListener != null) {
389 if (newFrame != null) {
390 newFrame.validatorDialog.addTreeSelectionListener(validatorSelectionListener);
391 } else if (oldFrame != null) {
392 oldFrame.validatorDialog.removeTreeSelectionListener(validatorSelectionListener);
393 }
394 }
395 }
396 }
397}
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