source: osm/applications/editors/josm/plugins/cadastre-fr/src/cadastre_fr/CadastreInterface.java@ 29801

Last change on this file since 29801 was 29801, checked in by pieren, 11 years ago

Fix transparency issue on new raster images. Temporary disable georeferences parsing not working on new cadastre WMS. Workaround on address help tool when switching to full screen.
  • Property svn:eol-style set to native
File size: 26.2 KB
Line 
1// License: GPL. v2 and later. Copyright 2008-2009 by Pieren <pieren3@gmail.com> and others
2package cadastre_fr;
3
4import static org.openstreetmap.josm.tools.I18n.tr;
5
6import java.awt.GridBagLayout;
7import java.io.BufferedReader;
8import java.io.IOException;
9import java.io.InputStreamReader;
10import java.io.OutputStream;
11import java.net.HttpURLConnection;
12import java.net.MalformedURLException;
13import java.net.URL;
14import java.util.Date;
15import java.util.Vector;
16
17import javax.swing.JComboBox;
18import javax.swing.JDialog;
19import javax.swing.JOptionPane;
20import javax.swing.JPanel;
21
22import org.openstreetmap.josm.Main;
23import org.openstreetmap.josm.data.coor.EastNorth;
24import org.openstreetmap.josm.gui.layer.Layer;
25import org.openstreetmap.josm.tools.GBC;
26
27public class CadastreInterface {
28 public boolean downloadCanceled = false;
29 public HttpURLConnection urlConn = null;
30
31 private String cookie;
32 private String interfaceRef = null;
33 private String lastWMSLayerName = null;
34 private URL searchFormURL;
35 private Vector<String> listOfCommunes = new Vector<String>();
36 private Vector<String> listOfTA = new Vector<String>();
37 class PlanImage {
38 String name;
39 String ref;
40 PlanImage(String name, String ref) {
41 this.name = name;
42 this.ref = ref;
43 }
44 }
45 private Vector<PlanImage> listOfFeuilles = new Vector<PlanImage>();
46 private long cookieTimestamp;
47
48 final String baseURL = "http://www.cadastre.gouv.fr";
49 final String cImageFormat = "Cette commune est au format ";
50 final String cCommuneListStart = "<select name=\"codeCommune\"";
51 final String cCommuneListEnd = "</select>";
52 final String c0ptionListStart = "<option value=\"";
53 final String cOptionListEnd = "</option>";
54 final String cBBoxCommunStart = "new GeoBox(";
55 final String cBBoxCommunEnd = ")";
56
57 final String cInterfaceVector = "afficherCarteCommune.do";
58 final String cInterfaceRasterTA = "afficherCarteTa.do";
59 final String cInterfaceRasterFeuille = "afficherCarteFeuille.do";
60 final String cImageLinkStart = "<a href=\"#\" class=\"raster\" onClick=\"popup('afficherCarteFeuille.do?f=";
61 final String cTAImageLinkStart = "<a href=\"#\" class=\"raster\" onClick=\"popup('afficherCarteTa.do?f=";
62 final String cImageNameStart = ">Feuille ";
63 final String cTAImageNameStart = "Tableau d'assemblage <strong>";
64
65 final static long cCookieExpiration = 30 * 60 * 1000; // 30 minutes expressed in milliseconds
66
67 final int cRetriesGetCookie = 10; // 10 times every 3 seconds means 30 seconds trying to get a cookie
68
69 public boolean retrieveInterface(WMSLayer wmsLayer) throws DuplicateLayerException, WMSException {
70 if (wmsLayer.getName().equals(""))
71 return false;
72 boolean isCookieExpired = isCookieExpired();
73 if (wmsLayer.getName().equals(lastWMSLayerName) && !isCookieExpired)
74 return true;
75 if (!wmsLayer.getName().equals(lastWMSLayerName))
76 interfaceRef = null;
77 // open the session with the French Cadastre web front end
78 downloadCanceled = false;
79 try {
80 if (cookie == null || isCookieExpired) {
81 getCookie();
82 interfaceRef = null;
83 }
84 if (cookie == null)
85 throw new WMSException(tr("Cannot open a new client session.\nServer in maintenance or temporary overloaded."));
86 if (interfaceRef == null) {
87 getInterface(wmsLayer);
88 this.lastWMSLayerName = wmsLayer.getName();
89 }
90 openInterface();
91 } catch (IOException e) {
92 JOptionPane.showMessageDialog(Main.parent,
93 tr("Town/city {0} not found or not available\n" +
94 "or action canceled", wmsLayer.getLocation()));
95 return false;
96 }
97 return true;
98 }
99
100 /**
101 *
102 * @return true if a cookie is delivered by WMS and false is WMS is not opening a client session
103 * (too many clients or in maintenance)
104 * @throws IOException
105 */
106 private void getCookie() throws IOException {
107 boolean cookied = false;
108 int retries = cRetriesGetCookie;
109 try {
110 searchFormURL = new URL(baseURL + "/scpc/accueil.do");
111 while (cookied == false && retries > 0) {
112 urlConn = (HttpURLConnection)searchFormURL.openConnection();
113 urlConn.setRequestProperty("Connection", "close");
114 urlConn.setRequestMethod("GET");
115 urlConn.connect();
116 if (urlConn.getResponseCode() == HttpURLConnection.HTTP_OK) {
117 System.out.println("GET "+searchFormURL);
118 BufferedReader in = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
119 while(in.readLine() != null) {} // read the buffer otherwise we sent POST too early
120 String headerName=null;
121 for (int i=1; (headerName = urlConn.getHeaderFieldKey(i))!=null; i++) {
122 if (headerName.equals("Set-Cookie")) {
123 cookie = urlConn.getHeaderField(i);
124 cookie = cookie.substring(0, cookie.indexOf(";"));
125 cookieTimestamp = new Date().getTime();
126 System.out.println("received cookie=" + cookie + " at " + new Date(cookieTimestamp));
127 cookied = true;
128 }
129 }
130 } else {
131 System.out.println("Request to home page failed. Http error:"+urlConn.getResponseCode()+". Try again "+retries+" times");
132 CadastrePlugin.safeSleep(3000);
133 retries --;
134 }
135 }
136 } catch (MalformedURLException e) {
137 throw (IOException) new IOException(
138 "Illegal url.").initCause(e);
139 }
140 }
141
142 public void resetCookie() {
143 lastWMSLayerName = null;
144 cookie = null;
145 }
146
147 public boolean isCookieExpired() {
148 long now = new Date().getTime();
149 if ((now - cookieTimestamp) > cCookieExpiration) {
150 System.out.println("cookie received at "+new Date(cookieTimestamp)+" expired (now is "+new Date(now)+")");
151 return true;
152 }
153 return false;
154 }
155
156 public void resetInterfaceRefIfNewLayer(String newWMSLayerName) {
157 if (!newWMSLayerName.equals(lastWMSLayerName)) {
158 interfaceRef = null;
159 cookie = null; // new since WMS server requires that we come back to the main form
160 }
161 }
162
163 public void setCookie() {
164 this.urlConn.setRequestProperty("Cookie", this.cookie);
165 }
166
167 public void setCookie(HttpURLConnection urlConn) {
168 urlConn.setRequestProperty("Cookie", this.cookie);
169 }
170
171 private void getInterface(WMSLayer wmsLayer) throws IOException, DuplicateLayerException {
172 // first attempt : search for given name without codeCommune
173 interfaceRef = postForm(wmsLayer, "");
174 // second attempt either from known codeCommune (e.g. from cache) or from ComboBox
175 if (interfaceRef == null) {
176 if (!wmsLayer.getCodeCommune().equals("")) {
177 // codeCommune is already known (from previous request or from cache on disk)
178 interfaceRef = postForm(wmsLayer, wmsLayer.getCodeCommune());
179 } else {
180 if (listOfCommunes.size() > 1) {
181 // commune unknown, prompt the list of communes from
182 // server and try with codeCommune
183 String selected = selectMunicipalityDialog(wmsLayer);
184 if (selected != null) {
185 String newCodeCommune = selected.substring(1, selected.indexOf(">")-2);
186 String newLocation = selected.substring(selected.indexOf(">")+1, selected.lastIndexOf(" - "));
187 wmsLayer.setCodeCommune(newCodeCommune);
188 wmsLayer.setLocation(newLocation);
189 Main.pref.put("cadastrewms.codeCommune", newCodeCommune);
190 Main.pref.put("cadastrewms.location", newLocation);
191 }
192 checkLayerDuplicates(wmsLayer);
193 interfaceRef = postForm(wmsLayer, wmsLayer.getCodeCommune());
194 }
195 if (listOfCommunes.size() == 1 && wmsLayer.isRaster()) {
196 // commune known but raster format. Select "Feuille" (non-georeferenced image) from list.
197 int res = selectFeuilleDialog();
198 if (res != -1) {
199 wmsLayer.setCodeCommune(listOfFeuilles.elementAt(res).name);
200 checkLayerDuplicates(wmsLayer);
201 interfaceRef = buildRasterFeuilleInterfaceRef(wmsLayer.getCodeCommune());
202 }
203 }
204 }
205 }
206
207 if (interfaceRef == null)
208 throw new IOException("Town/city " + wmsLayer.getLocation() + " not found.");
209 }
210
211 private void openInterface() throws IOException {
212 try {
213 // finally, open the interface on server side giving access to the wms server
214 String lines = null;
215 String ln = null;
216 URL interfaceURL = new URL(baseURL + "/scpc/"+interfaceRef);
217 urlConn = (HttpURLConnection)interfaceURL.openConnection();
218 urlConn.setRequestMethod("GET");
219 setCookie();
220 urlConn.connect();
221 if (urlConn.getResponseCode() != HttpURLConnection.HTTP_OK) {
222 throw new IOException("Cannot open Cadastre interface. GET response:"+urlConn.getResponseCode());
223 }
224 System.out.println("GET "+interfaceURL);
225 BufferedReader in = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
226 // read the buffer otherwise we sent POST too early
227 while ((ln = in.readLine()) != null) {
228 lines += ln;
229 }
230 } catch (MalformedURLException e) {
231 throw (IOException) new IOException(
232 "CadastreGrabber: Illegal url.").initCause(e);
233 }
234 }
235
236 /**
237 * Post the form with the commune name and check the returned answer which is embedded
238 * in HTTP XML packets. This function doesn't use an XML parser yet but that would be a good idea
239 * for the next releases.
240 * Two possibilities :
241 * - either the commune name matches and we receive an URL starting with "afficherCarteCommune.do" or
242 * - we don't receive a single answer but a list of possible values. This answer looks like:
243 * <select name="codeCommune" class="long erreur" id="codeCommune">
244 * <option value="">Choisir</option>
245 * <option value="50061" >COLMARS - 04370</option>
246 * <option value="QK066" >COLMAR - 68000</option>
247 * </select>
248 * The returned string is the interface name used in further requests, e.g. "afficherCarteCommune.do?c=QP224"
249 * where QP224 is the code commune known by the WMS (or "afficherCarteTa.do?c=..." for raster images).
250 *
251 * @param location
252 * @param codeCommune
253 * @return retURL url to available code commune in the cadastre; "" if not found
254 * @throws IOException
255 */
256 private String postForm(WMSLayer wmsLayer, String codeCommune) throws IOException {
257 try {
258 String ln = null;
259 String lines = null;
260 listOfCommunes.clear();
261 listOfTA.clear();
262 // send a POST request with a city/town/village name
263 String content = "numerovoie=";
264 content += "&indiceRepetition=";
265 content += "&nomvoie=";
266 content += "&lieuDit=";
267 if (codeCommune == "") {
268 content += "&ville=" + new String(java.net.URLEncoder.encode(wmsLayer.getLocation(), "UTF-8"));
269 content += "&codePostal=";
270 } else {
271 content += "&codeCommune=" + codeCommune;
272 }
273 content += "&codeDepartement=";
274 content += wmsLayer.getDepartement();
275 content += "&nbResultatParPage=10";
276 content += "&x=0&y=0";
277 searchFormURL = new URL(baseURL + "/scpc/rechercherPlan.do");
278 urlConn = (HttpURLConnection)searchFormURL.openConnection();
279 urlConn.setRequestMethod("POST");
280 urlConn.setDoOutput(true);
281 urlConn.setDoInput(true);
282 setCookie();
283 OutputStream wr = urlConn.getOutputStream();
284 wr.write(content.getBytes());
285 System.out.println("POST "+content);
286 wr.flush();
287 wr.close();
288 BufferedReader rd = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
289 while ((ln = rd.readLine()) != null) {
290 lines += ln;
291 }
292 rd.close();
293 urlConn.disconnect();
294 if (lines != null) {
295 if (lines.indexOf(cImageFormat) != -1) {
296 int i = lines.indexOf(cImageFormat);
297 int j = lines.indexOf(".", i);
298 wmsLayer.setRaster(lines.substring(i+cImageFormat.length(), j).equals("image"));
299 }
300 if (!wmsLayer.isRaster() && lines.indexOf(cInterfaceVector) != -1) { // "afficherCarteCommune.do"
301 // shall be something like: interfaceRef = "afficherCarteCommune.do?c=X2269";
302 lines = lines.substring(lines.indexOf(cInterfaceVector),lines.length());
303 lines = lines.substring(0, lines.indexOf("'"));
304 System.out.println("interface ref.:"+lines);
305 return lines;
306 } else if (wmsLayer.isRaster() && lines.indexOf(cInterfaceRasterTA) != -1) { // "afficherCarteTa.do"
307 // list of values parsed in listOfFeuilles (list all non-georeferenced images)
308 lines = getFeuillesList();
309 if (!downloadCanceled) {
310 parseFeuillesList(lines);
311 if (listOfFeuilles.size() > 0) {
312 int res = selectFeuilleDialog();
313 if (res != -1) {
314 wmsLayer.setCodeCommune(listOfFeuilles.elementAt(res).name);
315 checkLayerDuplicates(wmsLayer);
316 interfaceRef = buildRasterFeuilleInterfaceRef(wmsLayer.getCodeCommune());
317 wmsLayer.setCodeCommune(listOfFeuilles.elementAt(res).ref);
318 lines = buildRasterFeuilleInterfaceRef(listOfFeuilles.elementAt(res).ref);
319 System.out.println("interface ref.:"+lines);
320 return lines;
321 }
322 }
323 }
324 return null;
325 } else if (lines.indexOf(cCommuneListStart) != -1 && lines.indexOf(cCommuneListEnd) != -1) {
326 // list of values parsed in listOfCommunes
327 int i = lines.indexOf(cCommuneListStart);
328 int j = lines.indexOf(cCommuneListEnd, i);
329 parseCommuneList(lines.substring(i, j));
330 }
331 }
332 } catch (MalformedURLException e) {
333 throw (IOException) new IOException(
334 "Illegal url.").initCause(e);
335 } catch (Exception e){
336 e.printStackTrace();
337 }
338 return null;
339 }
340
341 private void parseCommuneList(String input) {
342 if (input.indexOf(c0ptionListStart) != -1) {
343 while (input.indexOf("<option value=\"") != -1) {
344 int i = input.indexOf(c0ptionListStart);
345 int j = input.indexOf(cOptionListEnd, i+c0ptionListStart.length());
346 int k = input.indexOf("\"", i+c0ptionListStart.length());
347 if (j != -1 && k > (i + c0ptionListStart.length())) {
348 String lov = new String(input.substring(i+c0ptionListStart.length()-1, j));
349 if (lov.indexOf(">") != -1) {
350 System.out.println("parse "+lov);
351 listOfCommunes.add(lov);
352 } else
353 System.err.println("unable to parse commune string:"+lov);
354 }
355 input = input.substring(j+cOptionListEnd.length());
356 }
357 }
358 }
359
360 private String getFeuillesList() {
361 // get all images in one html page
362 String ln = null;
363 String lines = null;
364 HttpURLConnection urlConn2 = null;
365 try {
366 URL getAllImagesURL = new URL(baseURL + "/scpc/listerFeuillesParcommune.do?keepVolatileSession=&offset=2000");
367 urlConn2 = (HttpURLConnection)getAllImagesURL.openConnection();
368 setCookie(urlConn2);
369 urlConn2.connect();
370 System.out.println("GET "+getAllImagesURL);
371 BufferedReader rd = new BufferedReader(new InputStreamReader(urlConn2.getInputStream()));
372 while ((ln = rd.readLine()) != null) {
373 lines += ln;
374 }
375 rd.close();
376 urlConn2.disconnect();
377 //System.out.println("GET="+lines);
378 } catch (IOException e) {
379 listOfFeuilles.clear();
380 e.printStackTrace();
381 }
382 return lines;
383 }
384
385 private void parseFeuillesList(String input) {
386 listOfFeuilles.clear();
387 // get "Tableau d'assemblage"
388 String inputTA = input;
389 if (Main.pref.getBoolean("cadastrewms.useTA", false)) {
390 while (inputTA.indexOf(cTAImageLinkStart) != -1) {
391 inputTA = inputTA.substring(inputTA.indexOf(cTAImageLinkStart) + cTAImageLinkStart.length());
392 String refTA = inputTA.substring(0, inputTA.indexOf("'"));
393 String nameTA = inputTA.substring(inputTA.indexOf(cTAImageNameStart) + cTAImageNameStart.length());
394 nameTA = nameTA.substring(0, nameTA.indexOf("<"));
395 listOfFeuilles.add(new PlanImage(nameTA, refTA));
396 }
397 }
398 // get "Feuilles"
399 while (input.indexOf(cImageLinkStart) != -1) {
400 input = input.substring(input.indexOf(cImageLinkStart)+cImageLinkStart.length());
401 String refFeuille = input.substring(0, input.indexOf("'"));
402 String nameFeuille = input.substring(
403 input.indexOf(cImageNameStart)+cImageNameStart.length(),
404 input.indexOf(" -"));
405 listOfFeuilles.add(new PlanImage(nameFeuille, refFeuille));
406 }
407 }
408
409 private String selectMunicipalityDialog(WMSLayer wmsLayer) {
410 JPanel p = new JPanel(new GridBagLayout());
411 String[] communeList = new String[listOfCommunes.size() + 1];
412 communeList[0] = tr("Choose from...");
413 for (int i = 0; i < listOfCommunes.size(); i++) {
414 communeList[i + 1] = listOfCommunes.elementAt(i).substring(listOfCommunes.elementAt(i).indexOf(">")+1);
415 }
416 JComboBox inputCommuneList = new JComboBox(communeList);
417 p.add(inputCommuneList, GBC.eol().fill(GBC.HORIZONTAL).insets(10, 0, 0, 0));
418 JOptionPane pane = new JOptionPane(p, JOptionPane.INFORMATION_MESSAGE, JOptionPane.OK_CANCEL_OPTION, null) {
419 private static final long serialVersionUID = 1L;
420 };
421 //pane.createDialog(Main.parent, tr("Select commune")).setVisible(true);
422 // this below is a temporary workaround to fix the "always on top" issue
423 JDialog dialog = pane.createDialog(Main.parent, tr("Select commune"));
424 CadastrePlugin.prepareDialog(dialog);
425 dialog.setVisible(true);
426 // till here
427 if (!Integer.valueOf(JOptionPane.OK_OPTION).equals(pane.getValue()))
428 return null;
429 return listOfCommunes.elementAt(inputCommuneList.getSelectedIndex()-1);
430 }
431
432 private int selectFeuilleDialog() {
433 JPanel p = new JPanel(new GridBagLayout());
434 Vector<String> ImageNames = new Vector<String>();
435 for (PlanImage src : listOfFeuilles) {
436 ImageNames.add(src.name);
437 }
438 JComboBox inputFeuilleList = new JComboBox(ImageNames);
439 p.add(inputFeuilleList, GBC.eol().fill(GBC.HORIZONTAL).insets(10, 0, 0, 0));
440 JOptionPane pane = new JOptionPane(p, JOptionPane.INFORMATION_MESSAGE, JOptionPane.OK_CANCEL_OPTION, null);
441 //pane.createDialog(Main.parent, tr("Select Feuille")).setVisible(true);
442 // this below is a temporary workaround to fix the "always on top" issue
443 JDialog dialog = pane.createDialog(Main.parent, tr("Select Feuille"));
444 CadastrePlugin.prepareDialog(dialog);
445 dialog.setVisible(true);
446 // till here
447 if (!Integer.valueOf(JOptionPane.OK_OPTION).equals(pane.getValue()))
448 return -1;
449 int result = inputFeuilleList.getSelectedIndex();
450 return result;
451 }
452
453 private String buildRasterFeuilleInterfaceRef(String codeCommune) {
454 return cInterfaceRasterFeuille + "?f=" + codeCommune;
455 }
456
457 /**
458 * Retrieve the bounding box size in pixels of the whole commune (point 0,0 at top, left corner)
459 * and store it in given wmsLayer
460 * In case of raster image, we also check in the same http request if the image is already georeferenced
461 * and store the result in the wmsLayer as well.
462 * @param wmsLayer the WMSLayer where the commune data and images are stored
463 * @throws IOException
464 */
465 public void retrieveCommuneBBox(WMSLayer wmsLayer) throws IOException {
466 if (interfaceRef == null)
467 return;
468 String ln = null;
469 String line = null;
470 // send GET opening normally the small window with the commune overview
471 String content = baseURL + "/scpc/" + interfaceRef;
472 content += "&dontSaveLastForward&keepVolatileSession=";
473 searchFormURL = new URL(content);
474 urlConn = (HttpURLConnection)searchFormURL.openConnection();
475 urlConn.setRequestMethod("GET");
476 setCookie();
477 urlConn.connect();
478 if (urlConn.getResponseCode() != HttpURLConnection.HTTP_OK) {
479 throw new IOException("Cannot get Cadastre response.");
480 }
481 System.out.println("GET "+searchFormURL);
482 BufferedReader in = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
483 while ((ln = in.readLine()) != null) {
484 line += ln;
485 }
486 in.close();
487 urlConn.disconnect();
488 parseBBoxCommune(wmsLayer, line);
489 if (wmsLayer.isRaster() && !wmsLayer.isAlreadyGeoreferenced()) {
490 parseGeoreferences(wmsLayer, line);
491 }
492 }
493
494 private void parseBBoxCommune(WMSLayer wmsLayer, String input) {
495 if (input.indexOf(cBBoxCommunStart) != -1) {
496 input = input.substring(input.indexOf(cBBoxCommunStart));
497 int i = input.indexOf(",");
498 double minx = Double.parseDouble(input.substring(cBBoxCommunStart.length(), i));
499 int j = input.indexOf(",", i+1);
500 double miny = Double.parseDouble(input.substring(i+1, j));
501 int k = input.indexOf(",", j+1);
502 double maxx = Double.parseDouble(input.substring(j+1, k));
503 int l = input.indexOf(cBBoxCommunEnd, k+1);
504 double maxy = Double.parseDouble(input.substring(k+1, l));
505 wmsLayer.setCommuneBBox( new EastNorthBound(new EastNorth(minx,miny), new EastNorth(maxx,maxy)));
506 }
507 }
508
509 private void parseGeoreferences(WMSLayer wmsLayer, String input) {
510 /* commented since cadastre WMS changes mid july 2013
511 * until new GeoBox coordinates parsing is solved */
512// if (input.lastIndexOf(cBBoxCommunStart) != -1) {
513// input = input.substring(input.lastIndexOf(cBBoxCommunStart));
514// input = input.substring(input.indexOf(cBBoxCommunEnd)+cBBoxCommunEnd.length());
515// int i = input.indexOf(",");
516// int j = input.indexOf(",", i+1);
517// String str = input.substring(i+1, j);
518// double unknown_yet = tryParseDouble(str);
519// int j_ = input.indexOf(",", j+1);
520// double angle = Double.parseDouble(input.substring(j+1, j_));
521// int k = input.indexOf(",", j_+1);
522// double scale_origin = Double.parseDouble(input.substring(j_+1, k));
523// int l = input.indexOf(",", k+1);
524// double dpi = Double.parseDouble(input.substring(k+1, l));
525// int m = input.indexOf(",", l+1);
526// double fX = Double.parseDouble(input.substring(l+1, m));
527// int n = input.indexOf(",", m+1);
528// double fY = Double.parseDouble(input.substring(m+1, n));
529// int o = input.indexOf(",", n+1);
530// double X0 = Double.parseDouble(input.substring(n+1, o));
531// int p = input.indexOf(",", o+1);
532// double Y0 = Double.parseDouble(input.substring(o+1, p));
533// if (X0 != 0.0 && Y0 != 0) {
534// wmsLayer.setAlreadyGeoreferenced(true);
535// wmsLayer.fX = fX;
536// wmsLayer.fY = fY;
537// wmsLayer.angle = angle;
538// wmsLayer.X0 = X0;
539// wmsLayer.Y0 = Y0;
540// }
541// System.out.println("parse georef:"+unknown_yet+","+angle+","+scale_origin+","+dpi+","+fX+","+
542// fY+","+X0+","+Y0);
543// }
544 }
545
546 private double tryParseDouble(String str) {
547 try {
548 return Double.parseDouble(str);
549 } catch (NumberFormatException e) {
550 return 0;
551 }
552 }
553
554 private void checkLayerDuplicates(WMSLayer wmsLayer) throws DuplicateLayerException {
555 if (Main.map != null) {
556 for (Layer l : Main.map.mapView.getAllLayers()) {
557 if (l instanceof WMSLayer && l.getName().equals(wmsLayer.getName()) && (l != wmsLayer)) {
558 System.out.println("Try to grab into a new layer when "+wmsLayer.getName()+" is already opened.");
559 // remove the duplicated layer
560 Main.main.removeLayer(wmsLayer);
561 throw new DuplicateLayerException();
562 }
563 }
564 }
565 }
566
567 public void cancel() {
568 if (urlConn != null) {
569 urlConn.setConnectTimeout(1);
570 urlConn.setReadTimeout(1);
571 //urlConn.disconnect();
572 }
573 downloadCanceled = true;
574 lastWMSLayerName = null;
575 }
576
577}
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