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.Config;
  11 import tim.prune.I18nManager;
  12 import tim.prune.load.xml.XmlFileLoader;
  13
  14
  15 /**
  16  * Generic FileLoader class to select a file
  17  * and pass handling on to appropriate loader
  18  */
  19 public class FileLoader
  20 {
  21         private JFileChooser _fileChooser = null;
  22         private JFrame _parentFrame;
  23         private TextFileLoader _textFileLoader = null;
  24         private XmlFileLoader _xmlFileLoader = null;
  25
  26
  27         /**
  28          * Constructor
  29          * @param inApp Application object to inform of track load
  30          * @param inParentFrame parent frame to reference for dialogs
  31          */
  32         public FileLoader(App inApp, JFrame inParentFrame)
  33         {
  34                 _parentFrame = inParentFrame;
  35                 _textFileLoader = new TextFileLoader(inApp, inParentFrame);
  36                 _xmlFileLoader = new XmlFileLoader(inApp, inParentFrame);
  37         }
  38
  39
  40         /**
  41          * Select an input file and open the GUI frame
  42          * to select load options
  43          */
  44         public void openFile()
  45         {
  46                 // Construct file chooser if necessary
  47                 if (_fileChooser == null)
  48                 {
  49                         _fileChooser = new JFileChooser();
  50                         _fileChooser.addChoosableFileFilter(new GenericFileFilter("filetype.txt", new String[] {"txt", "text"}));
  51                         _fileChooser.addChoosableFileFilter(new GenericFileFilter("filetype.gpx", new String[] {"gpx"}));
  52                         _fileChooser.addChoosableFileFilter(new GenericFileFilter("filetype.kml", new String[] {"kml"}));
  53                         _fileChooser.setAcceptAllFileFilterUsed(true);
  54                         // start from directory in config if already set (by load jpegs)
  55                         File configDir = Config.getWorkingDirectory();
  56                         if (configDir != null) {_fileChooser.setCurrentDirectory(configDir);}
  57                 }
  58                 // Show the open dialog
  59                 if (_fileChooser.showOpenDialog(_parentFrame) == JFileChooser.APPROVE_OPTION)
  60                 {
  61                         File file = _fileChooser.getSelectedFile();
  62                         // Check file exists and is readable
  63                         if (file != null && file.exists() && file.canRead())
  64                         {
  65                                 // Store directory in config for later
  66                                 Config.setWorkingDirectory(file.getParentFile());
  67                                 // Check file type to see if it's xml or just normal text
  68                                 String fileExtension = file.getName().toLowerCase();
  69                                 if (fileExtension.length() > 4)
  70                                         {fileExtension = fileExtension.substring(fileExtension.length() - 4);}
  71                                 if (fileExtension.equals(".kml") || fileExtension.equals(".gpx")
  72                                         || fileExtension.equals(".xml"))
  73                                 {
  74                                         // Use xml loader for kml, gpx and xml filenames
  75                                         _xmlFileLoader.openFile(file);
  76                                 }
  77                                 else
  78                                 {
  79                                         // Use text loader for everything else
  80                                         _textFileLoader.openFile(file);
  81                                 }
  82                         }
  83                         else
  84                         {
  85                                 // couldn't read file - show error message
  86                                 JOptionPane.showMessageDialog(_parentFrame, I18nManager.getText("error.load.noread"),
  87                                         I18nManager.getText("error.load.dialogtitle"), JOptionPane.ERROR_MESSAGE);
  88                         }
  89                 }
  90         }
  91
  92         /**
  93          * @return the last delimiter character used for a text file load
  94          */
  95         public char getLastUsedDelimiter()
  96         {
  97                 return _textFileLoader.getLastUsedDelimiter();
  98         }
  99 }