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/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2016 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.exportto.swing.panel;

import java.awt.Color;

import java.awt.GridBagConstraints;

import java.awt.GridBagLayout;

import java.awt.Insets;

import javax.swing.BorderFactory;

import javax.swing.ButtonGroup;

import javax.swing.JPanel;

import javax.swing.JRadioButton;

import org.cresques.cts.ICoordTrans;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.exception.CreateEnvelopeException;

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

import org.gvsig.fmap.mapcontext.MapContext;

import org.gvsig.gui.beans.coordinatespanel.CoordinatesPanel;

import org.gvsig.tools.ToolsLocator;

import org.gvsig.tools.i18n.I18nManager;

import org.gvsig.tools.locator.LocatorException;

/**

 * A panel to select an envelope from different options:

 * - original data source envelope

 * - visible extent of the provided View (MapContext)

 * - user defined Envelope

 */

public class SelectEnvelopePanel extends JPanel {

        I18nManager trans = ToolsLocator.getI18nManager();

        private JRadioButton btnOriginalEnvelope = null;

        private JRadioButton btnViewEnvelope = null;

        private JRadioButton btnUserDefinedEnvelope = null;

        private ButtonGroup group = null;

        private CoordinatesPanel btnPnlDefinedEnvelope;

        private MapContext mapContext = null;

        private ICoordTrans viewTolayerCT = null;

        private static final long serialVersionUID = 4179360502906000062L;

        /**

         * When using this constructor, the View extent will not be

         * available.

         */

        public SelectEnvelopePanel() {

                initComponents();

        }

    /**

     * Preferred constructor.

     * 

     * @param mapcontext The MapContext to get the View envelope

     * @param viewTolayerCT A coordinate transform to transform the

     * view envelope from view projection coordinates to layer

     * projection coordinates. Can be set to null if layer and view

     * have the same projection.

     */

        public SelectEnvelopePanel(MapContext mapContext, ICoordTrans viewTolayerCT) {

                this.mapContext = mapContext;

                this.viewTolayerCT = viewTolayerCT;

                initComponents();

        }

        private void initComponents() {

                this.setLayout(new GridBagLayout());

                group = new ButtonGroup();

                GridBagConstraints constraints = new GridBagConstraints();

                constraints.gridx = 0;

                constraints.gridy = 0;

                constraints.anchor = GridBagConstraints.WEST;

                constraints.fill = GridBagConstraints.HORIZONTAL;

                constraints.insets = new Insets(5, 5, 5, 5);

                this.add(getBtnOriginalEnvelope(), constraints);

                getBtnOriginalEnvelope().setSelected(true);

                if (mapContext!=null) {

                        constraints.gridy++;

                        this.add(getBtnViewEnvelope(), constraints);

                }

                constraints.gridy++;

                this.add(getBtnUserDefinedEnvelope(), constraints);

                constraints.gridy++;

                constraints.ipadx = 30;

                this.add(getPnlUserDefinedEnvelope(), constraints);

        }

        private JRadioButton getBtnOriginalEnvelope() {

                if (btnOriginalEnvelope==null) {

                        String text = trans.getTranslation("Do_not_filter_by_envelope");

                        btnOriginalEnvelope  = new JRadioButton(text);

                        group.add(btnOriginalEnvelope);

                }

                return btnOriginalEnvelope;

        }

        private JRadioButton getBtnViewEnvelope() {

                if (btnViewEnvelope==null) {

                        String text = trans.getTranslation("Use_View_envelope");

                        btnViewEnvelope  = new JRadioButton(text);

                        group.add(btnViewEnvelope);

                }

                return btnViewEnvelope;

        }

        private JRadioButton getBtnUserDefinedEnvelope() {

                if (btnUserDefinedEnvelope==null) {

                        String text = trans.getTranslation("Use_custom_envelope_(coordinates_using_data_source_projection)");

                        btnUserDefinedEnvelope  = new JRadioButton(text);

                        group.add(btnUserDefinedEnvelope);

                }

                return btnUserDefinedEnvelope;

        }

        private CoordinatesPanel getPnlUserDefinedEnvelope() {

                if (btnPnlDefinedEnvelope==null) {

                        btnPnlDefinedEnvelope = new CoordinatesPanel();

                }

                return btnPnlDefinedEnvelope;

        }

        public Envelope getEnvelope() {

                if (getBtnViewEnvelope().isSelected()) {

                        if (this.mapContext!=null) {

                                Envelope envelope = this.mapContext.getViewPort().getEnvelope();

                                if (viewTolayerCT!=null) {

                                        envelope = envelope.convert(viewTolayerCT);

                                }

                                return envelope;

                        }

                }

                else if (getBtnUserDefinedEnvelope().isSelected()){

                    double minX = string2double(getPnlUserDefinedEnvelope().getValue11());

                    double minY = string2double(getPnlUserDefinedEnvelope().getValue22());

                    double maxX = string2double(getPnlUserDefinedEnvelope().getValue21());

                    double maxY = string2double(getPnlUserDefinedEnvelope().getValue12());

                    try {

                                return GeometryLocator.getGeometryManager().createEnvelope(minX, minY, maxX, maxY, Geometry.SUBTYPES.GEOM2D);

                        } catch (LocatorException e) {

                                // TODO Auto-generated catch block

                                e.printStackTrace();

                        } catch (CreateEnvelopeException e) {

                                // TODO Auto-generated catch block

                                e.printStackTrace();

                        }

                }

            return null;

    }

    /**

     * Tries to parse a string as a double 

     * @return

     */

    public double string2double(String strDouble) {

            try {

                    return Double.valueOf(strDouble).doubleValue();

            }

            catch (Exception e) {}

            // assume comma was used as decimal separator

            String replaced = strDouble.replaceAll(".", "");

            replaced = replaced.replaceAll(",", ".");

            try {

                    return Double.valueOf(strDouble).doubleValue();

            }

            catch (Exception e) {}

            // return 0.0 if no valid number could be decoded

            return 0.0d;

    }

}