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.extension.clipboard;

import javax.json.JsonArray;

import javax.swing.JOptionPane;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.andami.IconThemeHelper;

import org.gvsig.andami.plugins.Extension;

import org.gvsig.app.ApplicationLocator;

import org.gvsig.app.ApplicationManager;

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

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

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

import org.gvsig.fmap.mapcontext.MapContext;

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

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.i18n.I18nManager;

public class CopyFeaturesToClipboardExtension extends Extension {

    private static final Logger LOGGER = LoggerFactory.getLogger(CopyFeaturesToClipboardExtension.class);

    public void initialize() {

        IconThemeHelper.registerIcon("action", "layer-modify-clipboard-copy", this);

    }

    public void execute(String actionCommand) {

        if (actionCommand.compareToIgnoreCase("layer-modify-clipboard-copy") != 0) {

            return;

        }

        ApplicationManager application = ApplicationLocator.getManager();

        ViewDocument viewdoc = (ViewDocument) application.getActiveDocument(ViewManager.TYPENAME);

        if( viewdoc == null ) {

            return;

        }

        MapContext mapContext = viewdoc.getMapContext();

        FLyrVect layer = mapContext.getLayers().getFirstActiveVectorLayer();

        if( layer==null ) {

            return;

        }

        try {

            FeatureSelection selection = layer.getFeatureStore().getFeatureSelection();

            JsonArray json = selection.toJSON();

            application.putInClipboard(json.toString());

            I18nManager i18n = ToolsLocator.getI18nManager();

            application.messageDialog(

                    i18n.getTranslation("_Number_of_features_copied_to_clipboard")

                        + ":   " + selection.getSize(),

                    null, 

                    i18n.getTranslation("_Copy_selected_features_to_clipboard"),

                    JOptionPane.INFORMATION_MESSAGE, 

                    "CopyFeaturesToClipboard"

            );

        } catch (Exception e) {

            LOGGER.warn("Can't get the selection as JSON.", e);

        }

    }

    public boolean isEnabled() {

        // it's enabled if there is exactly one vector layer in the active view

        // and it has a selection

        ApplicationManager application = ApplicationLocator.getManager();

        ViewDocument viewdoc = (ViewDocument) application.getActiveDocument(ViewManager.TYPENAME);

        if( viewdoc == null ) {

            return false;

        }

        MapContext mapContext = viewdoc.getMapContext();

        FLyrVect layer = mapContext.getLayers().getFirstActiveVectorLayer();

        if( layer==null ) {

            return false;

        }

        if (!layer.isAvailable()) {

            // This can happen when opening a persisted project

            // and there is a "slow" layer (GeoDB)

            return false;

        }

        try {

            FeatureSelection selection = layer.getFeatureStore().getFeatureSelection();

            return !selection.isEmpty();

        } catch (Exception ex) {

            LOGGER.warn("Can't get selection from layer '"+layer.getName()+"'.", ex);

            return false;

        }

    }

    public boolean isVisible() {

        ApplicationManager application = ApplicationLocator.getManager();

        return application.getActiveDocument(ViewManager.TYPENAME)!=null;

    }

}