Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.app.project.documents.view;

import javax.swing.JOptionPane;

import org.gvsig.andami.PluginsLocator;

import org.gvsig.andami.PluginsManager;

import org.gvsig.app.ApplicationLocator;

import org.gvsig.app.ApplicationManager;

import org.gvsig.app.extension.AddLayer;

import org.gvsig.app.gui.preferencespage.LayerOrderPage;

import org.gvsig.app.project.ProjectPreferences;

import org.gvsig.app.project.documents.DocumentManager;

import org.gvsig.fmap.dal.exception.ReadException;

import org.gvsig.fmap.geom.primitive.Envelope;

import org.gvsig.fmap.mapcontext.MapContext;

import org.gvsig.fmap.mapcontext.MapContextLocator;

import org.gvsig.fmap.mapcontext.ViewPort;

import org.gvsig.fmap.mapcontext.layers.BaseLayerCollectionListener;

import org.gvsig.fmap.mapcontext.layers.FLayer;

import org.gvsig.fmap.mapcontext.layers.LayerCollectionEvent;

import org.gvsig.fmap.mapcontext.layers.order.LayerOrderManager;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.dynobject.DynObject;

import org.gvsig.tools.i18n.I18nManager;

import org.gvsig.tools.persistence.PersistentState;

import org.gvsig.tools.persistence.exception.PersistenceException;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * Clase que representa una vista del proyecto

 *

 */

public class DefaultViewDocument extends BaseViewDocument {

    private static Logger logger = LoggerFactory.getLogger(DefaultViewDocument.class);

    /**

     *

     */

    private static final long serialVersionUID = 676711512482334764L;

    public static final String PERSISTENCE_DEFINITION_NAME = "DefaultViewDocument";

    private class SetViewPortExtentWhenAddLayerListener extends BaseLayerCollectionListener {

        private Thread th = null;

        private final ViewPort viewPort;

        public SetViewPortExtentWhenAddLayerListener(ViewPort viewPort) {

            this.viewPort = viewPort;

        }

        @Override

        public synchronized void layerAdded(LayerCollectionEvent e) {

            if (th != null) {

                return;

            }

            if (viewPort.getEnvelope() == null) {

                final FLayer layer = e.getAffectedLayer();

                if (layer.isAvailable()) {

                    th = new Thread(new Runnable() {

                        @Override

                        public void run() {

                            try {

                                ApplicationManager application = ApplicationLocator.getManager();

                                I18nManager i18n = ToolsLocator.getI18nManager();

                                application.message(

                                        i18n.getTranslation("_Calculating_envelope"),

                                        JOptionPane.INFORMATION_MESSAGE

                                );

                                Envelope envelope = layer.getFullEnvelope();

                                // Si nadie le ha asignado un envelope mientras se

                                // calculaba el inicial le asignamos el calculado.

                                if (viewPort.getEnvelope() == null) {

                                    viewPort.setEnvelope(envelope);

                                }

                                application.message(

                                        "",

                                        JOptionPane.INFORMATION_MESSAGE

                                );

                            } catch (ReadException ex) {

                            }

                        }

                    }, "AddLayerToView");

                    th.start();

                    // Forzamos a salir del scheduler para dar paso al nuevo 

                    // thread que acabamos de crear. Prefiero el sleep al yield

                    // ya que este ultimo puede ser ignorado por el scheduler.

                    try {

                        Thread.sleep(1);

                    } catch (InterruptedException ex) {

                    }

                }

            }

        }

    }

    public DefaultViewDocument() {

        this(null);

    }

    public DefaultViewDocument(DocumentManager factory) {

        super(factory);

        ViewPort vp;

        ProjectPreferences preferences = (ProjectPreferences) ApplicationLocator.getManager().getPreferences("project");

        MapContext viewMapContext = new MapContext(

                new ViewPort(preferences.getDefaultProjection())

        );

        vp = viewMapContext.getViewPort();

        vp.setBackColor(preferences.getDefaultViewBackColor());

        vp.setDistanceUnits(preferences.getDefaultDistanceUnits());

        vp.setDistanceArea(preferences.getDefaultDistanceArea());

        /*

                 * Another user preference: the order manager

         */

        LayerOrderManager lom = getCurrentOrderManager();

        viewMapContext.setOrderManager(lom);

        /*

                 * Not very elegant but we are forcing meters if projected

         */

        if (viewMapContext.getProjection().isProjected()) {

            vp.setMapUnits(1);

        } else {

            vp.setMapUnits(8);

        }

        this.setMapContext(viewMapContext);

        MapContext overviewMapContext = new MapContext(

                new ViewPort(viewMapContext.getProjection())

        );

        vp = viewMapContext.getViewPort();

        vp.setBackColor(preferences.getDefaultViewBackColor());

        this.setMapOverViewContext(overviewMapContext);

        this.getMapContext().getLayers().addLayerCollectionListener(

                new SetViewPortExtentWhenAddLayerListener(this.getMapContext().getViewPort())

        );

        this.getMapOverViewContext().getLayers().addLayerCollectionListener(

                new SetViewPortExtentWhenAddLayerListener(this.getMapOverViewContext().getViewPort())

        );

    }

    /**

     * Get current order manager from persistence

     *

     * @return

     */

    private LayerOrderManager getCurrentOrderManager() {

        DynObject props = this.getPluginProperties();

        // current_layer_order_manager

        Object val_obj = null;

        if (props.hasDynValue(LayerOrderPage.PREFERENCES_ID)) {

            val_obj = props.getDynValue(LayerOrderPage.PREFERENCES_ID);

        }

        if (val_obj != null && val_obj instanceof LayerOrderManager) {

            LayerOrderManager lom = (LayerOrderManager) val_obj;

            return lom;

        } else {

            logger.info("No order manager found in persistence.");

            return MapContextLocator.getDefaultOrderManager();

        }

    }

    private DynObject getPluginProperties() {

        PluginsManager pluginsManager = PluginsLocator.getManager();

        return pluginsManager.getPlugin(AddLayer.class).getPluginProperties();

    }

    public void saveToState(PersistentState state) throws PersistenceException {

        super.saveToState(state);

    }

    public void loadFromState(PersistentState state) throws PersistenceException {

        super.loadFromState(state);

    }

    public String exportDocumentAsText() {

        // FIXME: jjdc PersistentManager getStateAsText o similar

//                 PersistenceManager manager = ToolsLocator.getPersistenceManager();

//                 PersistentState state = manager.getState(this);

//                 return manager.getStateAsText(state);

        return null;

    }

    public void setStateFromText(String text) {

        // FIXME: jjdc PersistentManager getStateFromText o similar

//                 PersistenceManager manager = ToolsLocator.getPersistenceManager();

//                 PersistentState state = manager.getStateFromText(text);

//                 this.loadFromState(state);

    }

}