Application: gvSIG desktop » gvSIG raster

/* 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.raster.tools.app.basic.tool.layerdatatype;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.Icon;

import org.gvsig.andami.IconThemeHelper;

import org.gvsig.app.project.documents.view.toc.AbstractTocContextMenuAction;

import org.gvsig.app.project.documents.view.toc.ITocItem;

import org.gvsig.fmap.dal.coverage.dataset.Buffer;

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

import org.gvsig.gui.beans.buttonspanel.ButtonsPanel;

import org.gvsig.gui.beans.defaultbuttonspanel.DefaultButtonsPanel;

import org.gvsig.i18n.Messages;

import org.gvsig.raster.algorithm.BasicAPISwingPanel;

import org.gvsig.raster.algorithm.process.DataProcess;

import org.gvsig.raster.fmap.layers.FLyrRaster;

import org.gvsig.raster.fmap.layers.ILayerState;

import org.gvsig.raster.fmap.layers.IRasterLayerActions;

import org.gvsig.raster.tools.algorithm.swing.AlgorithmSwingLocator;

import org.gvsig.raster.tools.app.basic.MainWindow;

import org.gvsig.raster.tools.app.basic.RasterToolsUtil;

import org.gvsig.raster.tools.app.basic.raster.gui.IGenericToolBarMenuItem;

/**

 * <code>LayerDatatypeMenuEntry</code> entry point to change the data type of a layer

 *

 * @author Nacho Brodin (nachobrodin@gmail.com)

 */

public class LayerDatatypeTocMenuEntry extends AbstractTocContextMenuAction 

        implements IGenericToolBarMenuItem, ActionListener {

        static private LayerDatatypeTocMenuEntry       singleton              = null;

        private MainWindow                             window                 = null;

        private BasicAPISwingPanel                     panel                  = null;

        private FLyrRaster                             inputLayer             = null;

        /**

         * Nobody can instantiate this object. It's necessary to use getSingleton method

         */

        private LayerDatatypeTocMenuEntry() {}

        /**

         * Gets a unique instance of this class

         * @return

         */

        public static LayerDatatypeTocMenuEntry getSingleton() {

                if (singleton == null)

                        singleton = new LayerDatatypeTocMenuEntry();

                return singleton;

        }

        public String getGroup() {

                return "RasterExport";

        }

        public int getGroupOrder() {

                return 50;

        }

        public int getOrder() {

                return 2;

        }

        public String getText() {

                return Messages.getText("change_datatype");

        }

        public boolean isEnabled(ITocItem item, FLayer[] selectedItems) {

                if ((selectedItems == null) || (selectedItems.length != 1))

                        return false;

                if (!(selectedItems[0] instanceof ILayerState))

                        return false;

                if (!((ILayerState) selectedItems[0]).isOpen())

                        return false;

                return true;

        }

        public boolean isVisible(ITocItem item, FLayer[] selectedItems) {

                if ((selectedItems == null) || (selectedItems.length != 1))

                        return false;

                if (!(selectedItems[0] instanceof IRasterLayerActions))

                        return false;

                return ((IRasterLayerActions) selectedItems[0]).isActionEnabled(IRasterLayerActions.CLIPPING);

        }

        public void execute(ITocItem item, FLayer[] selectedItems) {

                FLayer fLayer = null;

                if (selectedItems.length != 1)

                        return;

                fLayer = selectedItems[0];

                if (!(fLayer instanceof FLyrRaster))

                        return;

                inputLayer = (FLyrRaster)fLayer;

                panel = AlgorithmSwingLocator.getSwingManager().createLayerDatatypePanel(

                                inputLayer.getDataStore(), 

                                getDataType(inputLayer),

                                inputLayer.getName());

                window = new MainWindow(panel.getComponent(), 

                                null, 

                                Messages.getText("change_datatype"), 

                                350, 290, 

                                this);

                RasterToolsUtil.addWindow(window);

        }

        /**

         * Gets the data type of the input layer as String

         * @param fLayer

         * @return

         */

        private String getDataType(FLyrRaster fLayer) {

                int dt = fLayer.getDataStore().getDataType()[0];

                if(dt == Buffer.TYPE_BYTE)

                        return "BYTE";

                if(dt == Buffer.TYPE_SHORT)

                        return "SHORT";

                if(dt == Buffer.TYPE_INT)

                        return "INTEGER";

                if(dt == Buffer.TYPE_FLOAT)

                        return "FLOAT";

                if(dt == Buffer.TYPE_DOUBLE)

                        return "DOUBLE";

                return "";

        }

        public void actionPerformed(ActionEvent e) {

                if( e.getSource() == ((DefaultButtonsPanel)window).getButtonsPanel().getButton(ButtonsPanel.BUTTON_APPLY) ||

                                e.getSource() == ((DefaultButtonsPanel)window).getButtonsPanel().getButton(ButtonsPanel.BUTTON_ACCEPT)) {

                        DataProcess task = null;

                        try {

                                task = (DataProcess)panel.getResult();

                        } catch (Exception e1) {

                                Messages.getText("error_getting_process");

                        }

                        task.setActions(new ProcessEndActions(window, inputLayer));

                        task.init();

                        task.start();

                }

        }

        public Icon getIcon() {

                return IconThemeHelper.getImageIcon("datatype-icon");

        }

}