Source Code Cross Referenced for MapFactory.java in  » GIS » udig-1.1 » net » refractions » udig » project » ui » internal » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » GIS » udig 1.1 » net.refractions.udig.project.ui.internal 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *    uDig - User Friendly Desktop Internet GIS client
003:         *    http://udig.refractions.net
004:         *    (C) 2004, Refractions Research Inc.
005:         *
006:         *    This library is free software; you can redistribute it and/or
007:         *    modify it under the terms of the GNU Lesser General Public
008:         *    License as published by the Free Software Foundation;
009:         *    version 2.1 of the License.
010:         *
011:         *    This library is distributed in the hope that it will be useful,
012:         *    but WITHOUT ANY WARRANTY; without even the implied warranty of
013:         *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014:         *    Lesser General Public License for more details.
015:         *
016:         */
017:        package net.refractions.udig.project.ui.internal;
018:
019:        import java.awt.Color;
020:        import java.io.File;
021:        import java.io.IOException;
022:        import java.net.MalformedURLException;
023:        import java.net.URL;
024:        import java.security.InvalidParameterException;
025:        import java.util.ArrayList;
026:        import java.util.Collections;
027:        import java.util.List;
028:
029:        import net.refractions.udig.catalog.CatalogPlugin;
030:        import net.refractions.udig.catalog.IGeoResource;
031:        import net.refractions.udig.catalog.IResolve;
032:        import net.refractions.udig.catalog.IService;
033:        import net.refractions.udig.catalog.IServiceFactory;
034:        import net.refractions.udig.catalog.internal.ui.ResourceSelectionPage;
035:        import net.refractions.udig.project.ProjectBlackboardConstants;
036:        import net.refractions.udig.project.internal.Layer;
037:        import net.refractions.udig.project.internal.LayerFactory;
038:        import net.refractions.udig.project.internal.Map;
039:        import net.refractions.udig.project.internal.Project;
040:        import net.refractions.udig.project.internal.ProjectFactory;
041:        import net.refractions.udig.project.internal.ProjectPlugin;
042:        import net.refractions.udig.project.preferences.PreferenceConstants;
043:        import net.refractions.udig.project.ui.ApplicationGIS;
044:        import net.refractions.udig.project.ui.UDIGEditorInput;
045:        import net.refractions.udig.ui.ExceptionDisplayer;
046:        import net.refractions.udig.ui.PlatformGIS;
047:
048:        import org.eclipse.core.runtime.IProgressMonitor;
049:        import org.eclipse.core.runtime.IStatus;
050:        import org.eclipse.core.runtime.NullProgressMonitor;
051:        import org.eclipse.core.runtime.Status;
052:        import org.eclipse.core.runtime.jobs.Job;
053:        import org.eclipse.jface.preference.IPreferenceStore;
054:        import org.eclipse.jface.preference.PreferenceConverter;
055:        import org.eclipse.jface.wizard.Wizard;
056:        import org.eclipse.jface.wizard.WizardDialog;
057:        import org.eclipse.swt.graphics.RGB;
058:        import org.eclipse.swt.widgets.Display;
059:        import org.eclipse.ui.PlatformUI;
060:
061:        /**
062:         * A Factory for creating maps from different types of resources.
063:         * 
064:         * @author jeichar
065:         * @since 0.9.0
066:         * 
067:         * @deprecated use {@link ApplicationGIS}
068:         */
069:        public class MapFactory {
070:
071:            /**
072:             * The maximum number of resources per service that can be added to a map without asking the
073:             * user for permission. TODO expose this as a preference
074:             */
075:            public static final int MAX_RESOURCES_IN_SERVICE = 1;
076:
077:            private static final MapFactory INSTANCE = new MapFactory();
078:
079:            private MapFactory() {
080:                // do nothing
081:            }
082:
083:            /**
084:             * For each URL in <code>resources</code>, load the services at that location and access
085:             * their layers. Then add the layers to the current map, or a new one if it doesn't exist. The
086:             * new map will be created in the current project.
087:             * <p>
088:             * This is equivalent to calling <code>processURLs(resources, null)</code>.
089:             * </p>
090:             * 
091:             * @param resources a List of URLs pointing to services (WMS, Shapefile, etc)
092:             * @deprecated use {@link ApplicationGIS#createAndOpenMap(List)}
093:             */
094:            public void processURLs(List<URL> resources) {
095:                processURLs(resources, null);
096:            }
097:
098:            /**
099:             * For each URL in <code>resources</code>, load the services at that location and access
100:             * their layers.
101:             * <p>
102:             * The layers will then be added to the current map, if it exists, otherwise, a new map will be
103:             * created in the project designated by <code>target</code>.
104:             * </p>
105:             * <p>
106:             * This is equivalent to calling <code>processURLs(resources, target, false)</code>.
107:             * </p>
108:             * 
109:             * @param resources a List of URLs pointing to services (WMS, Shapefile, etc)
110:             * @param target Project to use if a new map is going to be created
111:             * @deprecated use {@link ApplicationGIS#createAndOpenMap(List, net.refractions.udig.project.IProject)}
112:             */
113:            public void processURLs(List<URL> resources, Project target) {
114:                processURLs(resources, target, false);
115:            }
116:
117:            /**
118:             * For each URL in <code>resources</code>, load the services at that location and access
119:             * their layers.
120:             * <p>
121:             * If <code>newMap</code> is set to <code>true</code> or there is no current map, the layers
122:             * will be added to a new map, contained in the project designated by <code>target</code>, or
123:             * the current project if <code>target</code> is null.
124:             * </p>
125:             * 
126:             * @param resources a List of URLs pointing to services (WMS, Shapefile, etc)
127:             * @param target Project to use if a new map is going to be created
128:             * @param newMap if true, a new map will be created even if there is one already open
129:             * @deprecated use {@link ApplicationGIS#addLayersToMap(net.refractions.udig.project.IProject, List)} or {@link ApplicationGIS#createAndOpenMap(List, net.refractions.udig.project.IProject)}
130:             * 
131:             */
132:            public void processURLs(List<URL> resources, Project target,
133:                    boolean newMap) {
134:                process(target, resources, newMap);
135:            }
136:
137:            /**
138:             * For each IResolve in <code>resources</code>, load the services at that location and access
139:             * their layers.
140:             * <p>
141:             * If <code>newMap</code> is set to <code>true</code> or there is no current map, the layers
142:             * will be added to a new map, contained in the project designated by <code>target</code>, or
143:             * the current project if <code>target</code> is null.
144:             * </p>
145:             * 
146:             * @param resources a List of IResolves to load onto a map
147:             * @param target Project to use if a new map is going to be created
148:             * @param newMap if true, a new map will be created even if there is one already open
149:             */
150:            public void processResolves(List<IResolve> resources,
151:                    Project target, boolean newMap) {
152:                process(target, resources, newMap);
153:            }
154:
155:            /**
156:             * This method will perform all of its work in a Job and will not block.
157:             * <p>
158:             * TODO fix this Process a list of X, try and make
159:             * 
160:             * @param resources a List of IResolves
161:             * @param newMap forces a new map to be created
162:             */
163:            public void process(final Project target, final List resources,
164:                    final boolean newMap) {
165:                if (resources == null) {
166:                    throw new InvalidParameterException(
167:                            "Parameter 'resources' cannot be null."); //$NON-NLS-1$
168:                }
169:
170:                Job job = new Job(
171:                        Messages.ProjectUIPlugin_loadingServices_title) {
172:                    @SuppressWarnings("unchecked")
173:                    protected IStatus run(final IProgressMonitor monitor) {
174:
175:                        List<Throwable> exceptions = new ArrayList<Throwable>();
176:
177:                        List<IResolve> services = new ArrayList<IResolve>();
178:                        List<IGeoResource> geoResources = new ArrayList<IGeoResource>();
179:                        List<Layer> layers = new ArrayList<Layer>();
180:
181:                        for (Object object : resources) {
182:                            if (monitor.isCanceled()) {
183:                                return Status.CANCEL_STATUS;
184:                            }
185:                            monitor.beginTask(Messages.MapFactory_taskSorting,
186:                                    resources.size());
187:                            try {
188:                                if (object instanceof  URL) {
189:                                    services.addAll(handleURL((URL) object,
190:                                            monitor));
191:                                } else if (object instanceof  File) {
192:                                    try {
193:                                        services.addAll(handleURL(
194:                                                ((File) object).toURL(),
195:                                                monitor));
196:                                    } catch (MalformedURLException e) {
197:                                        // ignore non-URL strings
198:                                    }
199:                                } else if (object instanceof  String) {
200:                                    try {
201:                                        services.addAll(handleURL(new URL(
202:                                                (String) object), monitor));
203:                                    } catch (MalformedURLException e) {
204:                                        // ignore non-URL strings
205:                                    }
206:                                } else if (object instanceof  IService) {
207:                                    services.add((IService) object);
208:                                } else if (object instanceof  IGeoResource) {
209:                                    geoResources.add((IGeoResource) object);
210:                                } else if (object instanceof  Layer) {
211:                                    layers.add((Layer) object);
212:                                } else if (object instanceof  java.util.Map) {
213:                                    services.addAll(CatalogPlugin.getDefault()
214:                                            .getServiceFactory().acquire(
215:                                                    (java.util.Map) object));
216:                                }
217:                            } catch (IOException e) {
218:                                exceptions.add(e);
219:                                ProjectUIPlugin.log(null, e);
220:                            }
221:
222:                            monitor.worked(1);
223:                        }
224:
225:                        List<IResolve> unChosenServices = new ArrayList<IResolve>();
226:
227:                        for (IResolve resolve : services) {
228:                            monitor
229:                                    .beginTask(
230:                                            Messages.ProjectUIPlugin_loadingServices_task,
231:                                            services.size());
232:                            if (monitor.isCanceled()) {
233:                                return Status.CANCEL_STATUS;
234:                            }
235:                            try {
236:                                List<IGeoResource> resources = handleResolve(
237:                                        resolve, monitor);
238:
239:                                if (resources.size() > MAX_RESOURCES_IN_SERVICE) {
240:                                    unChosenServices.add(resolve);
241:                                } else {
242:                                    geoResources.addAll(resources);
243:                                }
244:                            } catch (IOException e) {
245:                                exceptions.add(e);
246:                                ProjectUIPlugin.log(null, e);
247:                            }
248:                            monitor.worked(1);
249:                        }
250:
251:                        if (unChosenServices.size() > 0) {
252:                            geoResources
253:                                    .addAll(getResourcesFromUser(unChosenServices));
254:                        }
255:
256:                        if (monitor.isCanceled()) {
257:                            return Status.CANCEL_STATUS;
258:                        }
259:
260:                        Map map = new CurrentMapFinder().getCurrentMap();
261:                        boolean mapExists = (map != null); // this is used later, and I don't understand
262:                        // what for!
263:                        if (map == null || newMap) {
264:                            map = getMap(monitor, target, newMap);
265:                        }
266:
267:                        if (map
268:                                .getBlackboard()
269:                                .get(
270:                                        ProjectBlackboardConstants.MAP__BACKGROUND_COLOR) == null) {
271:                            IPreferenceStore store = ProjectPlugin.getPlugin()
272:                                    .getPreferenceStore();
273:                            RGB background = PreferenceConverter.getColor(
274:                                    store, PreferenceConstants.P_BACKGROUND);
275:                            map
276:                                    .getBlackboard()
277:                                    .put(
278:                                            ProjectBlackboardConstants.MAP__BACKGROUND_COLOR,
279:                                            new Color(background.red,
280:                                                    background.green,
281:                                                    background.blue));
282:                        }
283:
284:                        if (monitor.isCanceled()) {
285:                            return Status.CANCEL_STATUS;
286:                        }
287:
288:                        LayerFactory factory = map.getLayerFactory();
289:                        if (factory == null) {
290:                            factory = ProjectFactory.eINSTANCE
291:                                    .createLayerFactory();
292:                        }
293:
294:                        if (monitor.isCanceled()) {
295:                            return Status.CANCEL_STATUS;
296:                        }
297:
298:                        for (IGeoResource resource : geoResources) {
299:                            monitor.beginTask(Messages.MapFactory_retrieveTask,
300:                                    geoResources.size());
301:                            if (monitor.isCanceled()) {
302:                                return Status.CANCEL_STATUS;
303:                            }
304:
305:                            try {
306:                                IService service = resource.service(monitor);
307:                                CatalogPlugin.getDefault().getLocalCatalog()
308:                                        .add(service);
309:
310:                                Layer layer = factory.createLayer(resource);
311:                                if (layer != null) {
312:                                    layers.add(layer);
313:                                }
314:                            } catch (IOException e) {
315:                                exceptions.add(e);
316:                                ProjectUIPlugin.log(null, e);
317:                            }
318:                            monitor.worked(1);
319:                        }
320:                        if (!layers.isEmpty())
321:                            map.getLayersInternal().addAll(layers);
322:                        if (map.getLayersInternal().size() > 0
323:                                || newMap == true) {
324:                            ProjectExplorer.getProjectExplorer().open(map);
325:                        } else if (!mapExists) {
326:                            // this is very ambigious? what is going on here?
327:                            map.getProjectInternal().getElementsInternal()
328:                                    .remove(map);
329:                        }
330:
331:                        if (exceptions.size() != 0) {
332:                            String message = null;
333:                            if (exceptions.size() > 1) {
334:                                message = Messages.MapFactory_multiError;
335:                            } else {
336:                                message = Messages.MapFactory_error;
337:                            }
338:
339:                            ExceptionDisplayer.displayExceptions(exceptions,
340:                                    message, ProjectUIPlugin.ID);
341:                        }
342:                        monitor.done();
343:
344:                        return new Status(IStatus.OK, ProjectUIPlugin.ID,
345:                                IStatus.OK, Messages.ProjectUIPlugin_success,
346:                                null);
347:                    }
348:                };
349:                job.schedule();
350:            }
351:
352:            private List<IGeoResource> getResourcesFromUser(
353:                    List<IResolve> unChosenServices) {
354:                final ResourceSelectionPage page = new ResourceSelectionPage(
355:                        Messages.ProjectUIPlugin_resourceSelectionPage_title,
356:                        null);
357:                page.setResources(unChosenServices, null);
358:                final List<IGeoResource> chosenResources = new ArrayList<IGeoResource>();
359:
360:                PlatformGIS.syncInDisplayThread(new Runnable() {
361:                    public void run() {
362:                        Wizard wizard = new Wizard() {
363:                            public void addPages() {
364:                                addPage(page);
365:                            }
366:
367:                            @Override
368:                            public boolean performFinish() {
369:                                List<Object> list = page.getCheckedElements();
370:                                for (Object object : list) {
371:                                    if (object instanceof  IGeoResource)
372:                                        chosenResources
373:                                                .add((IGeoResource) object);
374:                                }
375:                                return true;
376:                            }
377:
378:                        };
379:                        WizardDialog dialog = new WizardDialog(Display
380:                                .getDefault().getActiveShell(), wizard);
381:                        dialog.setBlockOnOpen(true);
382:                        dialog.open();
383:                    }
384:                });
385:
386:                return chosenResources;
387:            }
388:
389:            private List<IGeoResource> handleResolve(IResolve resolve,
390:                    IProgressMonitor monitor) throws IOException {
391:                return resources(resolve.members(monitor));
392:            }
393:
394:            private List<IService> handleURL(URL url, IProgressMonitor monitor)
395:                    throws IOException {
396:                if (url.getFile().toLowerCase().endsWith(".udig")) { //$NON-NLS-1$
397:                    handleProjectURL(url, monitor);
398:                    return Collections.<IService> emptyList();
399:                }
400:
401:                // Process URL (we are expecting a IService)
402:                List<IService> goodServices = acquireGoodServices(url, monitor);
403:                if (goodServices.isEmpty()) {
404:                    throw new IOException("No service available for " + url); //$NON-NLS-1$
405:                } else {
406:                    return goodServices;
407:                }
408:            }
409:
410:            private void handleProjectURL(URL url, IProgressMonitor monitor) {
411:                monitor = validateMonitor(monitor);
412:                monitor.subTask(Messages.ProjectUIPlugin_loadingProject_task);
413:
414:                ProjectPlugin.getPlugin().getProjectRegistry().getProject(
415:                        url.getPath());
416:                return;
417:            }
418:
419:            /**
420:             * Same as processResources(monitor, resources, null);
421:             * 
422:             * @param monitor
423:             * @param resources
424:             * @return
425:             */
426:            public List<Layer> processResources(IProgressMonitor monitor,
427:                    List<Object> resources) {
428:                return processResources(monitor, resources, null);
429:            }
430:
431:            /**
432:             * Will acquire services for a single URL, as long as one service works we don't have an error.
433:             * <p>
434:             * If no servies work we will just punt out the exception from the last entry.
435:             * </p>
436:             * 
437:             * @param url
438:             * @return
439:             * @throws IOException
440:             */
441:            List<IService> acquireGoodServices(URL url, IProgressMonitor monitor)
442:                    throws IOException {
443:                if (url == null)
444:                    return Collections.<IService> emptyList();
445:                IServiceFactory factory = CatalogPlugin.getDefault()
446:                        .getServiceFactory();
447:                List<IService> result = factory.acquire(url);
448:                if (result.isEmpty()) {
449:                    throw new IOException(
450:                            "Could not acquire a working service for " + url); //$NON-NLS-1$
451:                }
452:                List<IService> good = new ArrayList<IService>();
453:                IOException notGood = null;
454:                for (IService service : result) {
455:
456:                    try {
457:                        if (service.members(monitor) != null) {
458:                            good.add(service);
459:                        }
460:                    } catch (IOException bad) {
461:                        notGood = bad;
462:                    }
463:                }
464:                if (good.isEmpty()) {
465:                    if (notGood != null) {
466:                        throw notGood;
467:                    }
468:                    throw new IOException(
469:                            "Could not acquire a working service for " + url); //$NON-NLS-1$
470:                }
471:
472:                return good;
473:            }
474:
475:            /**
476:             * Processes each element within the list of resources and returns all the Layers that have been
477:             * discovered as a result. This is typically used to turn URLs, Files, IServices and
478:             * IGeoResources into Layers.
479:             * 
480:             * @param monitor a progress monitor to indicate a user of work, can be null
481:             * @param resources a list of objects to be processed
482:             * @param target a target indicating that this is being performed on some object, can be null
483:             * @return a List <Layer>containing all discovered layers
484:             */
485:            @SuppressWarnings("unchecked")
486:            public List<Layer> processResources(IProgressMonitor monitor,
487:                    List<Object> resources, Object target) {
488:
489:                monitor = validateMonitor(monitor);
490:
491:                List<Layer> layers = new ArrayList<Layer>();
492:                List<IResolve> services = new ArrayList<IResolve>();
493:                List<IGeoResource> georesources = new ArrayList<IGeoResource>();
494:
495:                if (resources.isEmpty())
496:                    return layers;
497:
498:                for (Object object : resources) {
499:                    if (monitor.isCanceled())
500:                        return null;
501:                    if (object instanceof  Layer) {
502:                        layers.add((Layer) object);
503:                    }
504:                    if (object instanceof  IService) {
505:                        services.add((IService) object);
506:                    } else if (object instanceof  IGeoResource) {
507:                        georesources.add((IGeoResource) object);
508:                    } else if (object instanceof  java.util.Map) {
509:                        services.addAll(CatalogPlugin.getDefault()
510:                                .getServiceFactory().acquire(
511:                                        (java.util.Map) object));
512:                    }
513:                }
514:
515:                return layers;
516:            }
517:
518:            List<IGeoResource> resources(List<? extends IResolve> resolveList)
519:                    throws IOException {
520:                List<IGeoResource> build = new ArrayList<IGeoResource>();
521:                for (IResolve resolve : resolveList) {
522:                    if (resolve instanceof  IGeoResource) {
523:                        build.add((IGeoResource) resolve);
524:                    } else {
525:                        build.addAll(resources(resolve.members(null)));
526:                    }
527:                }
528:                return build;
529:            }
530:
531:            public Map getMap(IProgressMonitor monitor, Project project2,
532:                    boolean createMap) {
533:
534:                Map map = null;
535:                if (!createMap) {
536:                    map = new CurrentMapFinder().getCurrentMap();
537:                }
538:                if (map != null) {
539:                    return map;
540:                }
541:                Project project = project2;
542:                if (project == null) {
543:                    project = ProjectPlugin.getPlugin().getProjectRegistry()
544:                            .getCurrentProject();
545:                }
546:                if (project == null) {
547:                    project = ProjectPlugin.getPlugin().getProjectRegistry()
548:                            .getDefaultProject();
549:                }
550:
551:                String mapName = getNewMapName(project);
552:
553:                Map newmap = ProjectFactory.eINSTANCE.createMap(project,
554:                        mapName, new ArrayList<Layer>());
555:
556:                return newmap;
557:
558:            }
559:
560:            private static class CurrentMapFinder implements  Runnable {
561:                Map map = null;
562:
563:                /**
564:                 * @return
565:                 */
566:                Map getCurrentMap() {
567:                    map = null;
568:                    PlatformGIS.syncInDisplayThread(this );
569:                    return map;
570:                }
571:
572:                /*
573:                 * (non-Javadoc)
574:                 * 
575:                 * @see java.lang.Runnable#run()
576:                 */
577:                public void run() {
578:                    // TODO Auto-generated method stub
579:                    if (isMapOpen()) {
580:                        UDIGEditorInput input = (UDIGEditorInput) PlatformUI
581:                                .getWorkbench().getActiveWorkbenchWindow()
582:                                .getActivePage().getActiveEditor()
583:                                .getEditorInput();
584:                        map = (Map) input.getProjectElement();
585:                    }
586:                }
587:
588:                boolean isMapOpen() {
589:
590:                    if (PlatformUI.getWorkbench().getActiveWorkbenchWindow()
591:                            .getActivePage().getActiveEditor() != null) {
592:                        if (PlatformUI.getWorkbench()
593:                                .getActiveWorkbenchWindow().getActivePage()
594:                                .getActiveEditor() instanceof  MapEditor) {
595:                            return true;
596:                        }
597:                    }
598:                    return false;
599:                }
600:            }
601:
602:            private String getNewMapName(Project currentProject) {
603:                String name = Messages.ProjectUIPlugin_newMap_name;
604:
605:                int count = currentProject.getElementsInternal().size() + 1;
606:
607:                return name + count;
608:            }
609:
610:            IProgressMonitor validateMonitor(IProgressMonitor monitor) {
611:                if (monitor == null) {
612:                    return new NullProgressMonitor();
613:                }
614:                return monitor;
615:            }
616:
617:            public static MapFactory instance() {
618:                return INSTANCE;
619:            }
620:        }
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