srcjar/fr/orsay/lri/varna/views/VueLoadColorMapValues.java

   1 package fr.orsay.lri.varna.views;
   2
   3 import java.awt.CardLayout;
   4 import java.awt.Dimension;
   5 import java.awt.GridLayout;
   6 import java.awt.event.ActionEvent;
   7 import java.awt.event.ActionListener;
   8 import java.io.FileNotFoundException;
   9 import java.io.FileReader;
  10 import java.io.IOException;
  11 import java.io.InputStream;
  12 import java.io.InputStreamReader;
  13 import java.io.Reader;
  14 import java.net.MalformedURLException;
  15 import java.net.URL;
  16 import java.net.URLConnection;
  17
  18 import javax.swing.ButtonGroup;
  19 import javax.swing.JButton;
  20 import javax.swing.JCheckBox;
  21 import javax.swing.JFileChooser;
  22 import javax.swing.JLabel;
  23 import javax.swing.JPanel;
  24 import javax.swing.JRadioButton;
  25 import javax.swing.JTextField;
  26
  27 import fr.orsay.lri.varna.VARNAPanel;
  28
  29 public class VueLoadColorMapValues extends JPanel implements ActionListener {
  30         /**
  31          *
  32          */
  33         private static final long serialVersionUID = -1648400107478203724L;
  34         VARNAPanel _vp;
  35
  36   public VueLoadColorMapValues(VARNAPanel vp)
  37   {
  38           _vp = vp;
  39           init();
  40   }
  41   JRadioButton urlCB = new JRadioButton("URL");
  42   JRadioButton fileCB = new JRadioButton("File");
  43   JPanel urlAux = new JPanel();
  44   JPanel fileAux = new JPanel();
  45   CardLayout l = new CardLayout();
  46   JPanel input = new JPanel();
  47   JTextField urlTxt = new JTextField();
  48   JTextField fileTxt = new JTextField();
  49   JButton load = new JButton("Choose file");
  50
  51   private void init()
  52   {
  53           setLayout(new GridLayout(2,1));
  54           JPanel choice = new JPanel();
  55           urlCB.addActionListener(this);
  56           fileCB.addActionListener(this);
  57           ButtonGroup group = new ButtonGroup();
  58           group.add(urlCB);
  59           group.add(fileCB);
  60           choice.add(new JLabel("Choose input source:"));
  61           choice.add(urlCB);
  62           choice.add(fileCB);
  63           input.setLayout(l);
  64           urlTxt.setPreferredSize(new Dimension(300,30));
  65           fileTxt.setPreferredSize(new Dimension(300,30));
  66           urlAux.add(urlTxt);
  67           fileAux.add(fileTxt);
  68           fileAux.add(load);
  69           input.add(fileAux,"file");
  70           input.add(urlAux,"url");
  71           group.setSelected(fileCB.getModel(), true);
  72           load.addActionListener(this);
  73           this.add(choice);
  74           this.add(input);
  75   }
  76
  77 public void actionPerformed(ActionEvent e) {
  78         if (e.getSource() instanceof JRadioButton)
  79         {
  80                 if (urlCB.isSelected())
  81                 {
  82                         l.show(input, "url");
  83                 }
  84                 else
  85                 {
  86                         l.show(input, "file");
  87                 }
  88         }
  89         else if (e.getSource() instanceof JButton)
  90         {
  91                 JFileChooser fc = new JFileChooser();
  92                 if (fc.showOpenDialog(_vp) == JFileChooser.APPROVE_OPTION)
  93                 {
  94                         this.fileTxt.setText(fc.getSelectedFile().getAbsolutePath());
  95                 }
  96         }
  97 }
  98
  99 public Reader getReader() throws IOException
 100 {
 101         if (urlCB.isSelected())
 102         {
 103                 URL url = new URL(urlTxt.getText());
 104                 URLConnection connexion = url.openConnection();
 105                 connexion.setUseCaches(false);
 106                 InputStream r = connexion.getInputStream();
 107                 return new InputStreamReader(r);
 108         }
 109         else
 110         {
 111           return new FileReader(fileTxt.getText());
 112         }
 113
 114 }
 115
 116 }