| gvSIG desktop 1

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * 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 2

 * 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.

 * 

 */

package org.gvsig.app.extension;

import java.beans.PropertyChangeEvent;

import java.beans.PropertyChangeListener;

import org.gvsig.andami.IconThemeHelper;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.plugins.Extension;

import org.gvsig.app.ApplicationLocator;

import org.gvsig.app.ApplicationManager;

import org.gvsig.app.project.ProjectManager;

import org.gvsig.app.project.documents.table.TableDocument;

import org.gvsig.app.project.documents.table.TableManager;

import org.gvsig.app.project.documents.table.gui.FeatureTableDocumentPanel;

import org.gvsig.app.project.documents.view.ViewDocument;

import org.gvsig.app.project.documents.view.ViewManager;

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

import org.gvsig.fmap.dal.feature.FeatureStore;

import org.gvsig.fmap.mapcontext.layers.vectorial.GraphicLayer;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * Opens a table document of the current view's graphic layer.

 * 

 * @author gvSIG team

 */

public class ShowGraphicsLayerTable extends Extension implements

                PropertyChangeListener {

        private static final Logger LOG = LoggerFactory

                        .getLogger(ShowGraphicsLayerTable.class);

        private ApplicationManager appManager = ApplicationLocator.getManager();

        /**

         * @see org.gvsig.andami.plugins.IExtension#isEnabled()

         */

        public boolean isEnabled() {

                return getCurrentViewDocument() != null;

        }

        private ViewDocument getCurrentViewDocument() {

                return (ViewDocument) appManager

                                .getActiveDocument(ViewManager.TYPENAME);

        }

        /**

         * @see org.gvsig.andami.plugins.IExtension#isVisible()

         */

        public boolean isVisible() {

                try {

                        ViewDocument document = getCurrentViewDocument();

                        if (document == null) {

                                return false;

                        }

                        GraphicLayer graphicsLayer = document.getMapContext()

                                        .getGraphicsLayer();

                        TableManager tableManager = getTableManager();

                        TableDocument tableDocument = tableManager

                                        .getTableDocument(graphicsLayer);

                        return tableDocument != null

                                        || document.getMapContext().getGraphicsLayer()

                                                        .getFeatureStore().getFeatureCount() > 0;

                } catch (DataException e) {

                        LOG.error("Error checking if the current document is a "

                                        + "view and has data in the graphics layer", e);

                        return false;

                }

        }

        /**

         * @see com.iver.mdiApp.plugins.IExtension#updateUI(java.lang.String)

         */

        public void execute(String action) {

                ViewDocument document = getCurrentViewDocument();

                GraphicLayer graphicsLayer = document.getMapContext()

                                .getGraphicsLayer();

                ProjectManager projectManager = getProjectManager();

                TableManager tableManager = getTableManager();

                TableDocument tableDocument = tableManager

                                .getTableDocument(graphicsLayer);

                FeatureStore fs = graphicsLayer.getFeatureStore();

                if (tableDocument == null) {

                        tableDocument = (TableDocument) projectManager.createDocument(

                                        TableManager.TYPENAME,

                                        PluginServices.getText(this, "Tabla_de_Atributos") + ": "

                                                        + graphicsLayer.getName());

                        tableDocument.setStore(fs);

                        tableDocument.setAssociatedLayer(graphicsLayer);

                        projectManager.getCurrentProject().add(tableDocument);

                }

                tableDocument.setModified(true);

                FeatureTableDocumentPanel featureTableDocumentPanel = (FeatureTableDocumentPanel) tableManager

                                .getMainWindow(tableDocument);

                appManager.getUIManager().addWindow(featureTableDocumentPanel);

        }

        private ProjectManager getProjectManager() {

                return ProjectManager.getInstance();

        }

        private TableManager getTableManager() {

                TableManager tableManager = (TableManager) getProjectManager()

                                .getDocumentManager(TableManager.TYPENAME);

                return tableManager;

        }

        /**

         * @see org.gvsig.andami.plugins.IExtension#initialize()

         */

        public void initialize() {

                registerIcons();

        }

        public void postInitialize() {

                // Listen just in case a view document is removed, to remove also

                // the related graphics layer table document, if any

                getProjectManager().getCurrentProject().addPropertyChangeListener(this);

        }

        private void registerIcons() {

                IconThemeHelper.registerIcon("action", "layer-show-attributes-table", this);

        }

        public void propertyChange(PropertyChangeEvent evt) {

                if ("delDocument".equals(evt.getPropertyName())) {

                        if (evt.getOldValue() != null

                                        && evt.getOldValue() instanceof ViewDocument) {

                                ViewDocument viewDocument = (ViewDocument) evt.getOldValue();

                                getTableManager().removeTableDocument(

                                                viewDocument.getMapContext().getGraphicsLayer());

                        }

                }

        }

}