Java tutorial
/** * * geo-platform * Rich webgis framework * http://geo-platform.org * ==================================================================== * * Copyright (C) 2008-2019 geoSDI Group (CNR IMAA - Potenza - ITALY). * * This program is free software: you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. This program is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY; without * even the implied warranty of MERCHANTABILITY or FITNESS FOR * A PARTICULAR PURPOSE. See the GNU General Public License * for more details. You should have received a copy of the GNU General * Public License along with this program. If not, see http://www.gnu.org/licenses/ * * ==================================================================== * * Linking this library statically or dynamically with other modules is * making a combined work based on this library. Thus, the terms and * conditions of the GNU General Public License cover the whole combination. * * As a special exception, the copyright holders of this library give you permission * to link this library with independent modules to produce an executable, regardless * of the license terms of these independent modules, and to copy and distribute * the resulting executable under terms of your choice, provided that you also meet, * for each linked independent module, the terms and conditions of the license of * that module. An independent module is a module which is not derived from or * based on this library. If you modify this library, you may extend this exception * to your version of the library, but you are not obligated to do so. If you do not * wish to do so, delete this exception statement from your version. */ package org.geosdi.geoplatform.gui.client.widget.wfs.initializer; import com.google.gwt.event.shared.HandlerRegistration; import com.google.gwt.user.client.Timer; import org.geosdi.geoplatform.gui.client.model.binder.ILayerSchemaBinder; import org.geosdi.geoplatform.gui.client.puregwt.observer.event.ResetToolbarObserverEvent; import org.geosdi.geoplatform.gui.client.puregwt.wfs.event.FeatureStatusBarEvent; import org.geosdi.geoplatform.gui.client.puregwt.wfs.event.InjectGetFeatureModelEvent; import org.geosdi.geoplatform.gui.client.widget.wfs.builder.FeatureMapLayerBuilder; import org.geosdi.geoplatform.gui.client.widget.wfs.map.control.getfeature.WFSGetFeatureControl; import org.geosdi.geoplatform.gui.client.widget.wfs.toolbar.button.WFSButtonKeyProvider; import org.geosdi.geoplatform.gui.client.widget.wfs.toolbar.button.WFSToggleButton; import org.geosdi.geoplatform.gui.model.GPLayerBean; import org.geosdi.geoplatform.gui.puregwt.GPEventBus; import org.gwtopenmaps.openlayers.client.Bounds; import org.gwtopenmaps.openlayers.client.LonLat; import org.gwtopenmaps.openlayers.client.MapWidget; import org.gwtopenmaps.openlayers.client.layer.Layer; import org.gwtopenmaps.openlayers.client.layer.Vector; import org.gwtopenmaps.openlayers.client.layer.WMS; import javax.inject.Inject; import java.util.List; import java.util.logging.Logger; import static org.geosdi.geoplatform.gui.client.widget.wfs.statusbar.FeatureStatusBar.FeatureStatusBarType.STATUS_OK; /** * @author Giuseppe La Scaleia - CNR IMAA geoSDI Group * @email giuseppe.lascaleia@geosdi.org */ public class FeatureMapInitializer implements IFeatureMapInitializer { private static final Logger logger = Logger.getLogger("FeatureMapInitializer"); private static final ResetToolbarObserverEvent resetToolbarObserver = new ResetToolbarObserverEvent(); private static final int WMS_Z_INDEX = 1000; private static final int VECTOR_LAYER_Z_INDEX = 1001; private final GPEventBus bus; // @Inject private MapWidget mapWidget; @Inject private FeatureMapLayerBuilder mapLayerBuilder; @Inject private Vector vectorLayer; @Inject private LonLat italyLonLat; @Inject private ILayerSchemaBinder layerSchemaBinder; @Inject private InjectGetFeatureModelEvent injectGetFeatureModelEvent; private Layer wms; private List<GPLayerBean> layers; private List<Layer> wmsLayers; private Bounds bb; /** * @param theBus */ @Inject public FeatureMapInitializer(GPEventBus theBus) { this.bus = theBus; addFeatureMapInitializerHandler(); } @Override public void bindLayerSchema() { final GPLayerBean layer = layerSchemaBinder.getSelectedLayer(); this.wms = this.mapLayerBuilder.buildLayer(layer); this.injectGetFeatureModelEvent.setWms(wms); WFSGetFeatureControl.fireInjectGetFeatureModelEvent(injectGetFeatureModelEvent); Timer t = new Timer() { @Override public void run() { loadLayerOnMap(); notifyStatus(); } }; t.schedule(1000); } @Override public void resetMapWidget() { this.bus.fireEvent(resetToolbarObserver); this.vectorLayer.destroyFeatures(); if ((this.wmsLayers != null) && !(this.wmsLayers.isEmpty())) { for (Layer layer : this.wmsLayers) { this.mapWidget.getMap().removeLayer(layer); } this.layers = null; this.wmsLayers = null; } if (wms != null) { this.mapWidget.getMap().removeLayer(wms); } this.mapWidget.getMap().removeLayer(vectorLayer); this.initMapWidget(); } @Override public void initMapWidget() { this.mapWidget.getMap().setCenter(italyLonLat, 4); } @Override public final HandlerRegistration addFeatureMapInitializerHandler() { return this.bus.addHandler(TYPE, this); } @Override public void redrawWMSLayer() { ((WMS) this.wms).redraw(true); } @Override public void bindLayers(List<GPLayerBean> theLayers) { this.layers = theLayers; } protected void loadLayerOnMap() { this.mapWidget.getMap().addLayer(wms); this.mapWidget.getMap().addLayer(vectorLayer); this.wms.setZIndex(WMS_Z_INDEX); this.vectorLayer.setZIndex(VECTOR_LAYER_Z_INDEX); ((WMS) wms).redraw(true); this.bb = ((WMS) this.wms).getOptions().getMaxExtent(); this.mapWidget.getMap().zoomToExtent(this.bb); WFSToggleButton.fireToggleStateEvent(WFSButtonKeyProvider.GET_FEATURE.name()); } public void zoomOnBounds() { this.mapWidget.getMap().zoomToExtent(this.bb); } protected void notifyStatus() { this.bus.fireEvent(new FeatureStatusBarEvent("WFS Layer loaded", STATUS_OK)); } }