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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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 *
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 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2
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 * of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.
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 *
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 * For more information, contact:
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 *
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 *  Generalitat Valenciana
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 *   Conselleria d'Infraestructures i Transport
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 *   Av. Blasco Ib??ez, 50
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 *   46010 VALENCIA
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 *   SPAIN
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 *
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 *      +34 963862235
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 *   gvsig@gva.es
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 *      www.gvsig.gva.es
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 *
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 *    or
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 *
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 *   IVER T.I. S.A
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 *   Salamanca 50
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 *   46005 Valencia
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 *   Spain
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 *
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 *   +34 963163400
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 *   dac@iver.es
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 */
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package com.iver.cit.gvsig.fmap.layers;
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import com.iver.cit.gvsig.fmap.DriverException;
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import com.iver.cit.gvsig.fmap.FMap;
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import com.iver.cit.gvsig.fmap.ViewPort;
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import com.iver.cit.gvsig.fmap.drivers.DriverIOException;
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import com.iver.cit.gvsig.fmap.layers.layerOperations.LayerCollection;
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import com.iver.cit.gvsig.fmap.layers.layerOperations.VectorialData;
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import com.iver.cit.gvsig.fmap.operations.Cancellable;
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import com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor;
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import com.iver.cit.gvsig.fmap.operations.strategies.VisitException;
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53
import com.iver.utiles.StringUtilities;
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import com.iver.utiles.XMLEntity;
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import org.cresques.cts.ICoordTrans;
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import org.cresques.cts.IProjection;
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import org.cresques.cts.gt2.CoordSys;
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import org.cresques.cts.gt2.CoordTrans;
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import java.awt.Graphics2D;
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import java.awt.geom.Rectangle2D;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.net.MalformedURLException;
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import java.net.URL;
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70
import java.util.ArrayList;
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import java.util.BitSet;
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import java.util.Iterator;
73

    
74
import javax.swing.JOptionPane;
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76

    
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/**
78
 * Representa un nodo interno en el ?rbol de capas
79
 */
80
public class FLayers extends FLyrDefault implements VectorialData,
81
        LayerCollection {
82
        //ArrayList de Listener registrados.
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        private ArrayList layerListeners = new ArrayList();
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        private ArrayList layers = new ArrayList(4);
85
        private FMap fmap;
86

    
87
        /**
88
         * Crea un nuevo FLayers.
89
         *
90
         * @param fmap
91
         * @param parent
92
         */
93
        public FLayers(FMap fmap, FLayers parent) {
94
                setParentLayer(parent);
95
                this.fmap = fmap;
96
        }
97

    
98
        /**
99
         * A?ade un listener de los eventos de la colecci?n de capas
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         *
101
         * @param listener
102
         */
103
        public void addLayerCollectionListener(LayerCollectionListener listener) {
104
                layerListeners.add(listener);
105
        }
106

    
107
        /**
108
         * @see com.iver.cit.gvsig.fmap.layers.layerOperations.LayerCollection#setAllVisibles(boolean)
109
         */
110
        public void setAllVisibles(boolean visible) {
111
                FLayer lyr;
112

    
113
                for (int i = 0; i < layers.size(); i++) {
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                        lyr = ((FLayer) layers.get(i));
115
                        lyr.setVisible(visible);
116

    
117
                        if (lyr instanceof LayerCollection) {
118
                                ((LayerCollection) lyr).setAllVisibles(visible);
119
                        }
120
                }
121
        }
122

    
123
        /**
124
         * Elimina un listener de los eventos de la colecci?n de capas
125
         *
126
         * @param listener
127
         */
128
        public void removeLayerCollectionListener(LayerCollectionListener listener) {
129
                layerListeners.remove(listener);
130
        }
131

    
132
        /**
133
         * A?ade una capa.
134
         *
135
         * @param layer
136
         */
137
        private void doAddLayer(FLayer layer) {
138
                layers.add(layer);
139
                layer.setParentLayer(this);
140
        }
141

    
142
        /**
143
         * A?ade una capa al final de la lista de subcapas
144
         *
145
         * @param layer
146
         *
147
         * @throws CancelationException
148
         */
149
        public void addLayer(FLayer layer) throws CancelationException {
150
                callLayerAdding(LayerCollectionEvent.createLayerAddingEvent(layer));
151

    
152
                doAddLayer(layer);
153

    
154
                callLayerAdded(LayerCollectionEvent.createLayerAddedEvent(layer));
155
        }
156

    
157
        /**
158
         * Mueve una capa de la posici?n from a la posici?n to. (Se supone que
159
         * est?n dentro del mismo nivel). Para mover entre niveles, usar otro
160
         * m?todo (por hacer)
161
         *
162
         * @param from origen.
163
         * @param to destino.
164
         *
165
         * @throws CancelationException
166
         */
167
        public void moveTo(int from, int to) throws CancelationException {
168
                FLayer aux = (FLayer) layers.get(from);
169
                callLayerMoving(LayerPositionEvent.createLayerMovingEvent(aux, from, to));
170
                layers.remove(from);
171
                layers.add(to, aux);
172
                callLayerMoved(LayerPositionEvent.createLayerMovedEvent(aux, from, to));
173
        }
174

    
175
        /**
176
         * Borra una capa del ArrayList que contiene a las capas.
177
         *
178
         * @param lyr FLayer.
179
         */
180
        private void doRemoveLayer(FLayer lyr) {
181
                layers.remove(lyr);
182
        }
183

    
184
        /**
185
         * Borra una capa de la colecci?n de capas.
186
         *
187
         * @param lyr FLayer
188
         *
189
         * @throws CancelationException
190
         */
191
        public void removeLayer(FLayer lyr) throws CancelationException {
192
                callLayerRemoving(LayerCollectionEvent.createLayerRemovingEvent(lyr));
193
                doRemoveLayer(lyr);
194
                callLayerRemoved(LayerCollectionEvent.createLayerRemovedEvent(lyr));
195
        }
196

    
197
        /**
198
         * Borra una FLayer del vector a partir del identificador.
199
         *
200
         * @param idLayer
201
         */
202
        public void removeLayer(int idLayer) {
203
                FLayer lyr = (FLayer) layers.get(idLayer);
204
                callLayerRemoving(LayerCollectionEvent.createLayerRemovingEvent(lyr));
205
                layers.remove(idLayer);
206
                callLayerRemoved(LayerCollectionEvent.createLayerRemovedEvent(lyr));
207
        }
208

    
209
        /**
210
         * M?todo de conveniencia para borrar una capa con ese nombre
211
         *
212
         * @param layerName
213
         */
214
        public void removeLayer(String layerName) {
215
                FLayer lyr;
216

    
217
                for (int i = 0; i < layers.size(); i++) {
218
                        lyr = ((FLayer) layers.get(i));
219

    
220
                        if (lyr.getName().compareToIgnoreCase(layerName) == 0) {
221
                                removeLayer(i);
222

    
223
                                break;
224
                        }
225
                }
226
        }
227

    
228
        /**
229
         * Obtiene el array de capas visibles que penden del arbol cuya ra?z es
230
         * este nodo
231
         *
232
         * @return Vector de FLayer.
233
         */
234
        public FLayer[] getVisibles() {
235
                ArrayList array = new ArrayList();
236

    
237
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
238
                        if (((FLayer) iter.next()).isVisible()) {
239
                                array.add((FLayer) iter.next());
240
                        }
241
                }
242

    
243
                return (FLayer[]) array.toArray(new FLayer[0]);
244
        }
245

    
246
        /**
247
         * Obtiene el hijo i-?simo directo de esta colecci?n
248
         *
249
         * @param index ?ndice.
250
         *
251
         * @return capa seleccionada.
252
         */
253
        public FLayer getLayer(int index) {
254
                return (FLayer) layers.get(index);
255
        }
256

    
257
        /**
258
         * M?todo de conveniencia para buscar una capa por su nombre Es conveniente
259
         * usar getLayer(int) siempre que se pueda, es m?s directo.
260
         *
261
         * @param layerName nombre.
262
         *
263
         * @return capa seleccionada.
264
         */
265
        public FLayer getLayer(String layerName) {
266
                FLayer lyr;
267

    
268
                for (int i = 0; i < layers.size(); i++) {
269
                        lyr = ((FLayer) layers.get(i));
270

    
271
                        if (lyr.getName().compareToIgnoreCase(layerName) == 0) {
272
                                return lyr;
273
                        }
274
                }
275

    
276
                return null;
277
        }
278

    
279
        /**
280
         * Obtiene el n?mero de capas que hay en su mismo nivel Es decir, no cuenta
281
         * las subcapas de un FLayers
282
         *
283
         * @return n?mero de capas.
284
         */
285
        public int getLayersCount() {
286
                return layers.size();
287
        }
288

    
289
        /**
290
         * @see com.iver.cit.gvsig.fmap.layers.FLayer#draw(java.awt.image.BufferedImage,
291
         *                 java.awt.Graphics2D, com.iver.cit.gvsig.fmap.ViewPort)
292
         */
293
        public void draw(BufferedImage image, Graphics2D g, ViewPort viewPort,
294
                Cancellable cancel) throws DriverException {
295
            double scale = getFMap().getScaleView();
296
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
297
                        FLayer lyr = (FLayer) iter.next();
298

    
299
                        if (lyr.isVisible()) {
300
                            if (lyr.isWithinScale())
301
                                lyr.draw(image, g, viewPort, cancel);
302
                        }
303
                }
304

    
305
                if (getVirtualLayers() != null) {
306
                        getVirtualLayers().draw(image, g, viewPort, cancel);
307
                }
308
        }
309

    
310
        /**
311
         * @see com.iver.cit.gvsig.fmap.layers.FLayer#print(java.awt.Graphics2D,
312
         *                 com.iver.cit.gvsig.fmap.ViewPort,
313
         *                 com.iver.cit.gvsig.fmap.operations.Cancellable)
314
         */
315
        public void print(Graphics2D g, ViewPort viewPort, Cancellable cancel)
316
                throws DriverException {
317
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
318
                        FLayer lyr = (FLayer) iter.next();
319

    
320
                        if (lyr.isVisible()) {
321
                                lyr.print(g, viewPort, cancel);
322
                        }
323
                }
324
        }
325

    
326
        /**
327
         * @see com.iver.cit.gvsig.fmap.layers.FLayer#getFullExtent()
328
         */
329
        public Rectangle2D getFullExtent() throws DriverException {
330
                Rectangle2D rAux = null;
331
                int i = 0;
332

    
333
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
334
                        FLayer capa = (FLayer) iter.next();
335

    
336
                        if (i == 0) {
337
                                rAux = capa.getFullExtent();
338
                        } else {
339
                                rAux.add(capa.getFullExtent());
340
                        }
341

    
342
                        i++;
343
                }
344

    
345
                return rAux;
346
        }
347

    
348
        /**
349
         * Llama al m?todo layerAdding de los listeners dados de alta.
350
         *
351
         * @param event
352
         *
353
         * @throws CancelationException
354
         */
355
        private void callLayerAdding(LayerCollectionEvent event)
356
                throws CancelationException {
357
                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {
358
                        ((LayerCollectionListener) iter.next()).layerAdding(event);
359
                }
360
        }
361

    
362
        /**
363
         * Llama al m?todo layerRemoving de los listeners dados de alta.
364
         *
365
         * @param event
366
         *
367
         * @throws CancelationException
368
         */
369
        private void callLayerRemoving(LayerCollectionEvent event)
370
                throws CancelationException {
371
                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {
372
                        ((LayerCollectionListener) iter.next()).layerRemoving(event);
373
                }
374
        }
375

    
376
        /**
377
         * Llama al m?todo layerMoving de los listeners dados de alta.
378
         *
379
         * @param event
380
         *
381
         * @throws CancelationException
382
         */
383
        private void callLayerMoving(LayerPositionEvent event)
384
                throws CancelationException {
385
                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {
386
                        ((LayerCollectionListener) iter.next()).layerMoving(event);
387
                }
388
        }
389

    
390
        /**
391
         * Llama al m?todo layerAdded de los listeners dados de alta.
392
         *
393
         * @param event
394
         */
395
        private void callLayerAdded(LayerCollectionEvent event) {
396
                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {
397
                        ((LayerCollectionListener) iter.next()).layerAdded(event);
398
                }
399
        }
400

    
401
        /**
402
         * Llama al m?todo layerRemoved de los listeners dados de alta.
403
         *
404
         * @param event
405
         */
406
        private void callLayerRemoved(LayerCollectionEvent event) {
407
                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {
408
                        ((LayerCollectionListener) iter.next()).layerRemoved(event);
409
                }
410
        }
411

    
412
        /**
413
         * Llama al m?todo layerMoved de los listeners dados de alta.
414
         *
415
         * @param event
416
         */
417
        private void callLayerMoved(LayerPositionEvent event) {
418
                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {
419
                        ((LayerCollectionListener) iter.next()).layerMoved(event);
420
                }
421
        }
422

    
423
        /**
424
         * @see com.iver.cit.gvsig.fmap.layers.FLayer#getProperties()
425
         */
426
        public XMLEntity getXMLEntity() {
427
                XMLEntity xml = super.getXMLEntity();
428
                xml.putProperty("numLayers", layers.size());
429

    
430
                String[] s = new String[layers.size()];
431

    
432
                for (int i = 0; i < layers.size(); i++) {
433
                        s[i] = ((FLayer) layers.get(i)).getName();
434
                }
435

    
436
                xml.putProperty("LayerNames", s);
437

    
438
                for (int i = 0; i < layers.size(); i++) {
439
                        xml.addChild(((FLayer) layers.get(i)).getXMLEntity());
440
                }
441

    
442
                return xml;
443
        }
444

    
445
        /**
446
         * DOCUMENT ME!
447
         *
448
         * @param xml DOCUMENT ME!
449
         *
450
         * @throws XMLException
451
         *
452
         * @see com.iver.cit.gvsig.fmap.layers.FLyrDefault#setXMLEntity(com.iver.utiles.XMLEntity)
453
         */
454
        public void setXMLEntity(XMLEntity xml) throws XMLException {
455
                super.setXMLEntity(xml);
456

    
457
                int numLayers = xml.getIntProperty("numLayers");
458

    
459
                String[] s = xml.getStringArrayProperty("LayerNames");
460
                try {
461
                        for (int i = 0; i < numLayers; i++) {
462
                                FLayer layer = null;
463
        
464
                                String className = xml.getChild(i).getStringProperty("className");
465
        
466
                                if (className.equals(FLyrVect.class.getName())) {
467
                                        if (xml.getChild(i).contains("file")) {
468
        
469
                                                        layer = LayerFactory.createLayer(s[i],
470
                                                                        xml.getChild(i).getStringProperty("driverName"),
471
                                                                        new File(xml.getChild(i).getStringProperty("file")),
472
                                                                        this.getFMap().getViewPort().getProjection());
473
                                                                                                                    
474
                                        } else if (true) {
475
                                                //TODO falta por implementar
476
                                        } else if (true) {
477
                                                //TODO falta por implementar
478
                                        }
479
        
480
                                        layer.setXMLEntity(xml.getChild(i));
481
                                        // Comprobar que la proyecci?n es la misma que la de FMap
482
                                        // Si no lo es, es una capa que est? reproyectada al vuelo 
483
                                        IProjection proj = layer.getProjection();
484
                                        if (proj != null)
485
                                            if (proj != fmap.getProjection())
486
                                            {
487
                                                        ICoordTrans ct = new CoordTrans((CoordSys) proj,
488
                                                                        (CoordSys) fmap.getProjection());
489
                                                        layer.setCoordTrans(ct);
490
                                                        System.err.println("coordTrans = " +
491
                                                                proj.getAbrev() + " " +
492
                                                                fmap.getProjection().getAbrev());
493
                                            }
494
                                        
495
                                } else if (className.equals(FLyrWMS.class.getName())) {
496
                                        try {
497
                                                layer = LayerFactory.createLayer(s[i],
498
                                                                StringUtilities.string2Rect(
499
                                                                        xml.getChild(i).getStringProperty("fullExtent")),
500
                                                                new URL(xml.getChild(i).getStringProperty("host")),
501
                                                                xml.getChild(i).getStringProperty("format"),
502
                                                                xml.getChild(i).getStringProperty("layerQuery"),
503
                                                                xml.getChild(i).getStringProperty("infoLayerQuery"),
504
                                                                xml.getChild(i).getStringProperty("srs"));
505
                                        } catch (MalformedURLException e) {
506
                                                throw new XMLException(e);
507
                                        }
508
                                } else if (className.equals((FLyrRaster.class.getName()))) {
509
                                        //if (xml.getChild(i).contains("file")) {
510
                                        /*layer = LayerFactory.createLayer(s[i],
511
                                                        xml.getChild(i).getStringProperty("driverName"),
512
                                                        new File(xml.getChild(i).getStringProperty("file")),
513
                                                        this.getFMap().getViewPort().getProjection());*/
514
                                        layer = new FLyrRaster();
515
                                        layer.setName(s[i]);
516
                                        layer.setXMLEntity(xml.getChild(i));
517
                                        ((FLyrRaster)layer).setProjection(this.getFMap().getViewPort().getProjection());
518
                                        try {
519
                                                layer.load();
520
                                        } catch (DriverIOException e) {
521
                                                throw new XMLException(e);
522
                                        }
523
        
524
                                        //} else if (true) {
525
                                        //TODO falta por implementar
526
                                        //} else if (true) {
527
                                        //TODO falta por implementar
528
                                        //}
529
                                        //TODO Falta por implementar
530
                                }
531
        
532
                                fmap.getLayers().addLayer(layer);
533
                        }
534
                } catch (DriverException e) {
535
                        throw new XMLException(e);
536
                }
537
                
538
        }
539

    
540
        /**
541
         * @see com.iver.cit.gvsig.fmap.layers.layerOperations.VectorialData#process(com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor,
542
         *                 java.util.BitSet)
543
         */
544
        public void process(FeatureVisitor visitor, BitSet subset)
545
                throws DriverException, VisitException {
546
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
547
                        FLayer layer = (FLayer) iter.next();
548

    
549
                        if (layer instanceof VectorialData) {
550
                                ((VectorialData) layer).process(visitor, subset);
551
                        }
552
                }
553
        }
554

    
555
        /**
556
         * @see com.iver.cit.gvsig.fmap.layers.layerOperations.VectorialData#process(com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor)
557
         */
558
        public void process(FeatureVisitor visitor)
559
                throws DriverException, VisitException {
560
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
561
                        FLayer layer = (FLayer) iter.next();
562

    
563
                        if (layer.isActive()) {
564
                                if (layer instanceof VectorialData) {
565
                                        ((VectorialData) layer).process(visitor);
566
                                }
567
                        }
568
                }
569
        }
570

    
571
        /**
572
         * @see com.iver.cit.gvsig.fmap.layers.FLayer#getFMap()
573
         */
574
        public FMap getFMap() {
575
                return fmap;
576
        }
577

    
578
        /* (non-Javadoc)
579
         * @see com.iver.cit.gvsig.fmap.layers.FLayer#setCoordTrans(org.cresques.cts.ICoordTrans)
580
         */
581
        public void setCoordTrans(ICoordTrans ct) {
582
                super.setCoordTrans(ct);
583

    
584
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
585
                        FLayer layer = (FLayer) iter.next();
586
                        layer.setCoordTrans(ct);
587
                }
588
        }
589

    
590
        /**
591
         * @see com.iver.cit.gvsig.fmap.layers.layerOperations.LayerCollection#setAllActives(boolean)
592
         */
593
        public void setAllActives(boolean active) {
594
                FLayer lyr;
595

    
596
                for (int i = 0; i < layers.size(); i++) {
597
                        lyr = ((FLayer) layers.get(i));
598
                        lyr.setActive(active);
599

    
600
                        if (lyr instanceof LayerCollection) {
601
                                ((LayerCollection) lyr).setAllActives(active);
602
                        }
603
                }
604
        }
605

    
606
        /**
607
         * @see com.iver.cit.gvsig.fmap.layers.layerOperations.LayerCollection#getActives()
608
         */
609
        public FLayer[] getActives() {
610
                ArrayList ret = new ArrayList();
611

    
612
                for (int i = 0; i < layers.size(); i++) {
613
                        if (((FLayer) layers.get(i)).isActive()) {
614
                                ret.add(layers.get(i));
615
                        }
616
                }
617

    
618
                return (FLayer[]) ret.toArray(new FLayer[0]);
619
        }
620

    
621
    /* (non-Javadoc)
622
     * @see com.iver.cit.gvsig.fmap.layers.FLayer#getMinScale()
623
     */
624
    public double getMinScale() {
625
        return -1; // La visibilidad o no la controla cada capa
626
                // dentro de una colecci?n
627
    }
628

    
629
    /* (non-Javadoc)
630
     * @see com.iver.cit.gvsig.fmap.layers.FLayer#getMaxScale()
631
     */
632
    public double getMaxScale() {
633
        return -1;
634
    }
635
    public void setMinScale(double minScale)
636
    {
637
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
638
                        FLayer lyr = (FLayer) iter.next();
639
                        lyr.setMinScale(minScale);
640
                }
641
    }
642
    public void setMaxScale(double maxScale)
643
    {
644
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
645
                        FLayer lyr = (FLayer) iter.next();
646
                        lyr.setMinScale(maxScale);
647
                }
648
    }
649
    
650
}