tim/prune/load/FileLoader.java

   1 package tim.prune.load;
   2
   3 import java.io.File;
   4
   5 import javax.swing.JFileChooser;
   6 import javax.swing.JFrame;
   7 import javax.swing.JOptionPane;
   8
   9 import tim.prune.App;
  10 import tim.prune.I18nManager;
  11 import tim.prune.load.xml.XmlFileLoader;
  12
  13
  14 /**
  15  * Generic FileLoader class to select a file
  16  * and pass handling on to appropriate loader
  17  */
  18 public class FileLoader
  19 {
  20         private JFileChooser _fileChooser = null;
  21         private JFrame _parentFrame;
  22         private TextFileLoader _textFileLoader = null;
  23         private XmlFileLoader _xmlFileLoader = null;
  24
  25
  26         /**
  27          * Constructor
  28          * @param inApp Application object to inform of track load
  29          * @param inParentFrame parent frame to reference for dialogs
  30          */
  31         public FileLoader(App inApp, JFrame inParentFrame)
  32         {
  33                 _parentFrame = inParentFrame;
  34                 _textFileLoader = new TextFileLoader(inApp, inParentFrame);
  35                 _xmlFileLoader = new XmlFileLoader(inApp, inParentFrame);
  36         }
  37
  38
  39         /**
  40          * Select an input file and open the GUI frame
  41          * to select load options
  42          */
  43         public void openFile()
  44         {
  45                 if (_fileChooser == null)
  46                         _fileChooser = new JFileChooser();
  47                 if (_fileChooser.showOpenDialog(_parentFrame) == JFileChooser.APPROVE_OPTION)
  48                 {
  49                         File file = _fileChooser.getSelectedFile();
  50                         // Check file exists and is readable
  51                         if (file != null && file.exists() && file.canRead())
  52                         {
  53                                 // Check file type to see if it's xml or just normal text
  54                                 String fileExtension = file.getName().toLowerCase();
  55                                 if (fileExtension.length() > 4)
  56                                         {fileExtension = fileExtension.substring(fileExtension.length() - 4);}
  57                                 if (fileExtension.equals(".kml") || fileExtension.equals(".gpx")
  58                                         || fileExtension.equals(".xml"))
  59                                 {
  60                                         // Use xml loader for kml, gpx and xml filenames
  61                                         _xmlFileLoader.openFile(file);
  62                                 }
  63                                 else
  64                                 {
  65                                         // Use text loader for everything else
  66                                         _textFileLoader.openFile(file);
  67                                 }
  68                         }
  69                         else
  70                         {
  71                                 // couldn't read file - show error message
  72                                 JOptionPane.showMessageDialog(_parentFrame, I18nManager.getText("error.load.noread"),
  73                                         I18nManager.getText("error.load.dialogtitle"), JOptionPane.ERROR_MESSAGE);
  74                         }
  75                 }
  76         }
  77
  78         /**
  79          * @return the last delimiter character used for a text file load
  80          */
  81         public char getLastUsedDelimiter()
  82         {
  83                 return _textFileLoader.getLastUsedDelimiter();
  84         }
  85 }