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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.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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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 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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import java.util.ArrayList;
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import java.util.BitSet;
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import java.util.Iterator;
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/**
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 * Representa un nodo interno en el ?rbol de capas
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 */
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public class FLayers extends FLyrDefault implements VectorialData,
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        LayerCollection {
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        //ArrayList de Listener registrados.
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        private ArrayList layerListeners = new ArrayList();
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        private ArrayList layers = new ArrayList(4);
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        private FMap fmap;
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        /**
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         * Crea un nuevo FLayers.
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         *
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         * @param fmap
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         * @param parent
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         */
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        public FLayers(FMap fmap, FLayers parent) {
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                setParentLayer(parent);
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                this.fmap = fmap;
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        }
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        /**
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         * A?ade un listener de los eventos de la colecci?n de capas
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         *
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         * @param listener
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         */
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        public void addLayerCollectionListener(LayerCollectionListener listener) {
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                layerListeners.add(listener);
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        }
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        /**
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         * @see com.iver.cit.gvsig.fmap.layers.layerOperations.LayerCollection#setAllVisibles(boolean)
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         */
104
        public void setAllVisibles(boolean visible) {
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                FLayer lyr;
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                for (int i = 0; i < layers.size(); i++) {
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                        lyr = ((FLayer) layers.get(i));
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                        lyr.setVisible(visible);
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111
                        if (lyr instanceof LayerCollection) {
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                                ((LayerCollection) lyr).setAllVisibles(visible);
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                        }
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                }
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        }
116

    
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        /**
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         * Elimina un listener de los eventos de la colecci?n de capas
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         *
120
         * @param listener
121
         */
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        public void removeLayerCollectionListener(LayerCollectionListener listener) {
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                layerListeners.remove(listener);
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        }
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        /**
127
         * A?ade una capa.
128
         *
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         * @param layer
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         */
131
        private void doAddLayer(FLayer layer) {
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                layers.add(layer);
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                layer.setParentLayer(this);
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        }
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        /**
137
         * A?ade una capa al final de la lista de subcapas
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         *
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         * @param layer
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         *
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         * @throws CancelationException
142
         */
143
        public void addLayer(FLayer layer) throws CancelationException {
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                callLayerAdding(LayerCollectionEvent.createLayerAddingEvent(layer));
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                doAddLayer(layer);
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                callLayerAdded(LayerCollectionEvent.createLayerAddedEvent(layer));
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        }
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        /**
152
         * Mueve una capa de la posici?n from a la posici?n to. (Se supone que
153
         * est?n dentro del mismo nivel). Para mover entre niveles, usar otro
154
         * m?todo (por hacer)
155
         *
156
         * @param from origen.
157
         * @param to destino.
158
         *
159
         * @throws CancelationException
160
         */
161
        public void moveTo(int from, int to) throws CancelationException {
162
                FLayer aux = (FLayer) layers.get(from);
163
                callLayerMoving(LayerPositionEvent.createLayerMovingEvent(aux, from, to));
164
                layers.remove(from);
165
                layers.add(to, aux);
166
                callLayerMoved(LayerPositionEvent.createLayerMovedEvent(aux, from, to));
167
        }
168

    
169
        /**
170
         * Borra una capa del ArrayList que contiene a las capas.
171
         *
172
         * @param lyr FLayer.
173
         */
174
        private void doRemoveLayer(FLayer lyr) {
175
                layers.remove(lyr);
176
        }
177

    
178
        /**
179
         * Borra una capa de la colecci?n de capas.
180
         *
181
         * @param lyr FLayer
182
         *
183
         * @throws CancelationException
184
         */
185
        public void removeLayer(FLayer lyr) throws CancelationException {
186
                callLayerRemoving(LayerCollectionEvent.createLayerRemovingEvent(lyr));
187
                doRemoveLayer(lyr);
188
                callLayerRemoved(LayerCollectionEvent.createLayerRemovedEvent(lyr));
189
        }
190

    
191
        /**
192
         * Borra una FLayer del vector a partir del identificador.
193
         *
194
         * @param idLayer
195
         */
196
        public void removeLayer(int idLayer) {
197
                FLayer lyr = (FLayer) layers.get(idLayer);
198
                callLayerRemoving(LayerCollectionEvent.createLayerRemovingEvent(lyr));
199
                layers.remove(idLayer);
200
                callLayerRemoved(LayerCollectionEvent.createLayerRemovedEvent(lyr));
201
        }
202

    
203
        /**
204
         * M?todo de conveniencia para borrar una capa con ese nombre
205
         *
206
         * @param layerName
207
         */
208
        public void removeLayer(String layerName) {
209
                FLayer lyr;
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211
                for (int i = 0; i < layers.size(); i++) {
212
                        lyr = ((FLayer) layers.get(i));
213

    
214
                        if (lyr.getName().compareToIgnoreCase(layerName) == 0) {
215
                                removeLayer(i);
216

    
217
                                break;
218
                        }
219
                }
220
        }
221

    
222
        /**
223
         * Obtiene el array de capas visibles que penden del arbol cuya ra?z es
224
         * este nodo
225
         *
226
         * @return Vector de FLayer.
227
         */
228
        public FLayer[] getVisibles() {
229
                ArrayList array = new ArrayList();
230

    
231
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
232
                        if (((FLayer) iter.next()).isVisible()) {
233
                                array.add((FLayer) iter.next());
234
                        }
235
                }
236

    
237
                return (FLayer[]) array.toArray(new FLayer[0]);
238
        }
239

    
240
        /**
241
         * Obtiene el hijo i-?simo directo de esta colecci?n
242
         *
243
         * @param index ?ndice.
244
         *
245
         * @return capa seleccionada.
246
         */
247
        public FLayer getLayer(int index) {
248
                return (FLayer) layers.get(index);
249
        }
250

    
251
        /**
252
         * M?todo de conveniencia para buscar una capa por su nombre Es conveniente
253
         * usar getLayer(int) siempre que se pueda, es m?s directo.
254
         *
255
         * @param layerName nombre.
256
         *
257
         * @return capa seleccionada.
258
         */
259
        public FLayer getLayer(String layerName) {
260
                FLayer lyr;
261

    
262
                for (int i = 0; i < layers.size(); i++) {
263
                        lyr = ((FLayer) layers.get(i));
264

    
265
                        if (lyr.getName().compareToIgnoreCase(layerName) == 0) {
266
                                return lyr;
267
                        }
268
                }
269

    
270
                return null;
271
        }
272

    
273
        /**
274
         * Obtiene el n?mero de capas que hay en su mismo nivel Es decir, no cuenta
275
         * las subcapas de un FLayers
276
         *
277
         * @return n?mero de capas.
278
         */
279
        public int getLayersCount() {
280
                return layers.size();
281
        }
282

    
283
        /**
284
         * @see com.iver.cit.gvsig.fmap.layers.FLayer#draw(java.awt.image.BufferedImage,
285
         *                 java.awt.Graphics2D, com.iver.cit.gvsig.fmap.ViewPort)
286
         */
287
        public void draw(BufferedImage image, Graphics2D g, ViewPort viewPort,
288
                Cancellable cancel) throws DriverException {
289
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
290
                        FLayer lyr = (FLayer) iter.next();
291

    
292
                        if (lyr.isVisible()) {
293
                                lyr.draw(image, g, viewPort, cancel);
294
                        }
295
                }
296

    
297
                if (getVirtualLayers() != null) {
298
                        getVirtualLayers().draw(image, g, viewPort, cancel);
299
                }
300
        }
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302
        /**
303
         * @see com.iver.cit.gvsig.fmap.layers.FLayer#print(java.awt.Graphics2D,
304
         *                 com.iver.cit.gvsig.fmap.ViewPort,
305
         *                 com.iver.cit.gvsig.fmap.operations.Cancellable)
306
         */
307
        public void print(Graphics2D g, ViewPort viewPort, Cancellable cancel)
308
                throws DriverException {
309
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
310
                        FLayer lyr = (FLayer) iter.next();
311

    
312
                        if (lyr.isVisible()) {
313
                                lyr.print(g, viewPort, cancel);
314
                        }
315
                }
316
        }
317

    
318
        /**
319
         * @see com.iver.cit.gvsig.fmap.layers.FLayer#getFullExtent()
320
         */
321
        public Rectangle2D getFullExtent() throws DriverException {
322
                Rectangle2D rAux = null;
323
                int i = 0;
324

    
325
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
326
                        FLayer capa = (FLayer) iter.next();
327

    
328
                        if (i == 0) {
329
                                rAux = capa.getFullExtent();
330
                        } else {
331
                                rAux.add(capa.getFullExtent());
332
                        }
333

    
334
                        i++;
335
                }
336

    
337
                return rAux;
338
        }
339

    
340
        /**
341
         * Llama al m?todo layerAdding de los listeners dados de alta.
342
         *
343
         * @param event
344
         *
345
         * @throws CancelationException
346
         */
347
        private void callLayerAdding(LayerCollectionEvent event)
348
                throws CancelationException {
349
                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {
350
                        ((LayerCollectionListener) iter.next()).layerAdding(event);
351
                }
352
        }
353

    
354
        /**
355
         * Llama al m?todo layerRemoving de los listeners dados de alta.
356
         *
357
         * @param event
358
         *
359
         * @throws CancelationException
360
         */
361
        private void callLayerRemoving(LayerCollectionEvent event)
362
                throws CancelationException {
363
                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {
364
                        ((LayerCollectionListener) iter.next()).layerRemoving(event);
365
                }
366
        }
367

    
368
        /**
369
         * Llama al m?todo layerMoving de los listeners dados de alta.
370
         *
371
         * @param event
372
         *
373
         * @throws CancelationException
374
         */
375
        private void callLayerMoving(LayerPositionEvent event)
376
                throws CancelationException {
377
                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {
378
                        ((LayerCollectionListener) iter.next()).layerMoving(event);
379
                }
380
        }
381

    
382
        /**
383
         * Llama al m?todo layerAdded de los listeners dados de alta.
384
         *
385
         * @param event
386
         */
387
        private void callLayerAdded(LayerCollectionEvent event) {
388
                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {
389
                        ((LayerCollectionListener) iter.next()).layerAdded(event);
390
                }
391
        }
392

    
393
        /**
394
         * Llama al m?todo layerRemoved de los listeners dados de alta.
395
         *
396
         * @param event
397
         */
398
        private void callLayerRemoved(LayerCollectionEvent event) {
399
                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {
400
                        ((LayerCollectionListener) iter.next()).layerRemoved(event);
401
                }
402
        }
403

    
404
        /**
405
         * Llama al m?todo layerMoved de los listeners dados de alta.
406
         *
407
         * @param event
408
         */
409
        private void callLayerMoved(LayerPositionEvent event) {
410
                for (Iterator iter = layerListeners.iterator(); iter.hasNext();) {
411
                        ((LayerCollectionListener) iter.next()).layerMoved(event);
412
                }
413
        }
414

    
415
        /**
416
         * @see com.iver.cit.gvsig.fmap.layers.FLayer#getProperties()
417
         */
418
        public XMLEntity getXMLEntity() {
419
                XMLEntity xml = super.getXMLEntity();
420
                xml.putProperty("numLayers", layers.size());
421

    
422
                String[] s = new String[layers.size()];
423

    
424
                for (int i = 0; i < layers.size(); i++) {
425
                        s[i] = ((FLayer) layers.get(i)).getName();
426
                }
427

    
428
                xml.putProperty("LayerNames", s);
429

    
430
                for (int i = 0; i < layers.size(); i++) {
431
                        xml.addChild(((FLayer) layers.get(i)).getXMLEntity());
432
                }
433

    
434
                return xml;
435
        }
436

    
437
        /**
438
         * DOCUMENT ME!
439
         *
440
         * @param xml DOCUMENT ME!
441
         *
442
         * @throws XMLException
443
         *
444
         * @see com.iver.cit.gvsig.fmap.layers.FLyrDefault#setXMLEntity(com.iver.utiles.XMLEntity)
445
         */
446
        public void setXMLEntity(XMLEntity xml) throws XMLException {
447
                super.setXMLEntity(xml);
448

    
449
                int numLayers = xml.getIntProperty("numLayers");
450

    
451
                String[] s = xml.getStringArrayProperty("LayerNames");
452
                try {
453
                        for (int i = 0; i < numLayers; i++) {
454
                                FLayer layer = null;
455
        
456
                                String className = xml.getChild(i).getStringProperty("className");
457
        
458
                                if (className.equals(FLyrVect.class.getName())) {
459
                                        if (xml.getChild(i).contains("file")) {
460
        
461
                                                        layer = LayerFactory.createLayer(s[i],
462
                                                                        xml.getChild(i).getStringProperty("driverName"),
463
                                                                        new File(xml.getChild(i).getStringProperty("file")),
464
                                                                        this.getFMap().getViewPort().getProjection());
465
                                        } else if (true) {
466
                                                //TODO falta por implementar
467
                                        } else if (true) {
468
                                                //TODO falta por implementar
469
                                        }
470
        
471
                                        layer.setXMLEntity(xml.getChild(i));
472
                                } else if (className.equals(FLyrWMS.class.getName())) {
473
                                        try {
474
                                                layer = LayerFactory.createLayer(s[i],
475
                                                                StringUtilities.string2Rect(
476
                                                                        xml.getChild(i).getStringProperty("fullExtent")),
477
                                                                new URL(xml.getChild(i).getStringProperty("host")),
478
                                                                xml.getChild(i).getStringProperty("format"),
479
                                                                xml.getChild(i).getStringProperty("infoLayerQuery"),
480
                                                                xml.getChild(i).getStringProperty("layerQuery"),
481
                                                                xml.getChild(i).getStringProperty("srs"));
482
                                        } catch (MalformedURLException e) {
483
                                                throw new XMLException(e);
484
                                        }
485
                                } else if (className.equals((FLyrRaster.class.getName()))) {
486
                                        //if (xml.getChild(i).contains("file")) {
487
                                        layer = LayerFactory.createLayer(s[i],
488
                                                        xml.getChild(i).getStringProperty("driverName"),
489
                                                        new File(xml.getChild(i).getStringProperty("file")),
490
                                                        this.getFMap().getViewPort().getProjection());
491
        
492
                                        //} else if (true) {
493
                                        //TODO falta por implementar
494
                                        //} else if (true) {
495
                                        //TODO falta por implementar
496
                                        //}
497
                                        //TODO Falta por implementar
498
                                }
499
        
500
                                fmap.getLayers().addLayer(layer);
501
                        }
502
                } catch (DriverException e) {
503
                        throw new XMLException(e);
504
                }
505
                
506
        }
507

    
508
        /**
509
         * @see com.iver.cit.gvsig.fmap.layers.layerOperations.VectorialData#process(com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor,
510
         *                 java.util.BitSet)
511
         */
512
        public void process(FeatureVisitor visitor, BitSet subset)
513
                throws DriverException, VisitException {
514
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
515
                        FLayer layer = (FLayer) iter.next();
516

    
517
                        if (layer instanceof VectorialData) {
518
                                ((VectorialData) layer).process(visitor, subset);
519
                        }
520
                }
521
        }
522

    
523
        /**
524
         * @see com.iver.cit.gvsig.fmap.layers.layerOperations.VectorialData#process(com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor)
525
         */
526
        public void process(FeatureVisitor visitor)
527
                throws DriverException, VisitException {
528
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
529
                        FLayer layer = (FLayer) iter.next();
530

    
531
                        if (layer.isActive()) {
532
                                if (layer instanceof VectorialData) {
533
                                        ((VectorialData) layer).process(visitor);
534
                                }
535
                        }
536
                }
537
        }
538

    
539
        /**
540
         * @see com.iver.cit.gvsig.fmap.layers.FLayer#getFMap()
541
         */
542
        public FMap getFMap() {
543
                return fmap;
544
        }
545

    
546
        /* (non-Javadoc)
547
         * @see com.iver.cit.gvsig.fmap.layers.FLayer#setCoordTrans(org.cresques.cts.ICoordTrans)
548
         */
549
        public void setCoordTrans(ICoordTrans ct) {
550
                super.setCoordTrans(ct);
551

    
552
                for (Iterator iter = layers.iterator(); iter.hasNext();) {
553
                        FLayer layer = (FLayer) iter.next();
554
                        layer.setCoordTrans(ct);
555
                }
556
        }
557

    
558
        /**
559
         * @see com.iver.cit.gvsig.fmap.layers.layerOperations.LayerCollection#setAllActives(boolean)
560
         */
561
        public void setAllActives(boolean active) {
562
                FLayer lyr;
563

    
564
                for (int i = 0; i < layers.size(); i++) {
565
                        lyr = ((FLayer) layers.get(i));
566
                        lyr.setActive(active);
567

    
568
                        if (lyr instanceof LayerCollection) {
569
                                ((LayerCollection) lyr).setAllActives(active);
570
                        }
571
                }
572
        }
573

    
574
        /**
575
         * @see com.iver.cit.gvsig.fmap.layers.layerOperations.LayerCollection#getActives()
576
         */
577
        public FLayer[] getActives() {
578
                ArrayList ret = new ArrayList();
579

    
580
                for (int i = 0; i < layers.size(); i++) {
581
                        if (((FLayer) layers.get(i)).isActive()) {
582
                                ret.add(layers.get(i));
583
                        }
584
                }
585

    
586
                return (FLayer[]) ret.toArray(new FLayer[0]);
587
        }
588
}