Application: gvSIG desktop » gvSIG tools: ToolBox

package es.unex.sextante.gui.algorithm;

import info.clearthought.layout.TableLayout;

import info.clearthought.layout.TableLayoutConstants;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.geom.Point2D;

import javax.swing.JButton;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextField;

import es.unex.sextante.core.Sextante;

import es.unex.sextante.gui.core.NamedPoint;

import es.unex.sextante.gui.core.SextanteGUI;

import java.util.List;

/**

 * A panel with two text fields, to introduce point coordinates. It also features a button to access pre-stored coordinates

 * 

 * @author volaya

 * 

 */

public class PointSelectionPanel

         extends

            JPanel {

   private JTextField textFieldX;

   private JButton    jButton;

   private JTextField textFieldY;

   private JLabel     labelX;

   private JLabel     labelY;

   PointSelectionPanel() {

      super();

      initGUI();

   }

   private void initGUI() {

      textFieldX = new JTextField("0");

      textFieldY = new JTextField("0");

      labelX = new JLabel(" X:");

      labelY = new JLabel(" Y:");

      jButton = new JButton();

      jButton.setText("...");

      final TableLayout thisLayout = new TableLayout(new double[][] {

               { 25.0, TableLayoutConstants.FILL, 25.0, TableLayoutConstants.FILL, 5.0, 25.0, 5.0 },

               { TableLayoutConstants.FILL } });

      this.setLayout(thisLayout);

      this.setPreferredSize(new java.awt.Dimension(128, 22));

      this.add(labelX, "0,  0");

      this.add(textFieldX, "1,  0");

      this.add(labelY, "2,  0");

      this.add(textFieldY, "3,  0");

      this.add(jButton, "5, 0");

      jButton.addActionListener(new ActionListener() {

         public void actionPerformed(final ActionEvent evt) {

            showPointSelector();

         }

      });

   }

   protected void showPointSelector() {

      final List<NamedPoint> coordsList = SextanteGUI.getGUIFactory().getCoordinatesList();

      if (!coordsList.isEmpty()) {

         final NamedPoint[] pts = coordsList.toArray(new NamedPoint[0]);

         final NamedPoint pt = (NamedPoint) JOptionPane.showInputDialog(this, Sextante.getText("Select_coordinates"),

                  Sextante.getText("Coordinates"), JOptionPane.PLAIN_MESSAGE, null, pts, null);

         if (pt != null) {

            textFieldX.setText(Double.toString(pt.getPoint().getX()));

            textFieldY.setText(Double.toString(pt.getPoint().getY()));

         }

      }

   }

   /**

    * Returns the selected point

    * 

    * @return the point introduced using this panel

    */

   public Point2D getPoint() {

      try {

         final Point2D pt = new Point2D.Double(Double.parseDouble(textFieldX.getText()), Double.parseDouble(textFieldY.getText()));

         return pt;

      }

      catch (final Exception e) {

         return null;

      }

   }

   /**

    * Sets the current point

    * 

    * @param point

    *                the new point to set

    */

   public void setPoint(final Point2D point) {

      textFieldX.setText(Double.toString(Math.floor(point.getX() * 10000.) / 10000.));

      textFieldY.setText(Double.toString(Math.floor(point.getY() * 10000.) / 10000.));

   }

}