tim/prune/load/FileLoader.java

   1 package tim.prune.load;
   2
   3 import java.io.File;
   4 import java.util.ArrayList;
   5 import java.util.TreeSet;
   6
   7 import javax.swing.JFileChooser;
   8 import javax.swing.JFrame;
   9
  10 import tim.prune.App;
  11 import tim.prune.config.Config;
  12 import tim.prune.data.Photo;
  13 import tim.prune.load.xml.GzipFileLoader;
  14 import tim.prune.load.xml.XmlFileLoader;
  15 import tim.prune.load.xml.ZipFileLoader;
  16
  17
  18 /**
  19  * Generic FileLoader class to select a file
  20  * and pass handling on to appropriate loader
  21  */
  22 public class FileLoader
  23 {
  24         private App _app;
  25         private JFileChooser _fileChooser = null;
  26         private JFrame _parentFrame;
  27         private TextFileLoader _textFileLoader = null;
  28         private NmeaFileLoader _nmeaFileLoader = null;
  29         private XmlFileLoader _xmlFileLoader = null;
  30         private ZipFileLoader _zipFileLoader = null;
  31         private GzipFileLoader _gzipFileLoader = null;
  32
  33
  34         /**
  35          * Constructor
  36          * @param inApp Application object to inform of track load
  37          * @param inParentFrame parent frame to reference for dialogs
  38          */
  39         public FileLoader(App inApp, JFrame inParentFrame)
  40         {
  41                 _app = inApp;
  42                 _parentFrame = inParentFrame;
  43                 _textFileLoader = new TextFileLoader(inApp, inParentFrame);
  44                 _nmeaFileLoader = new NmeaFileLoader(inApp);
  45                 _xmlFileLoader = new XmlFileLoader(inApp);
  46                 _zipFileLoader = new ZipFileLoader(inApp, _xmlFileLoader);
  47                 _gzipFileLoader = new GzipFileLoader(inApp, _xmlFileLoader);
  48         }
  49
  50
  51         /**
  52          * Select an input file and open the GUI frame
  53          * to select load options
  54          */
  55         public void openFile()
  56         {
  57                 // Construct file chooser if necessary
  58                 if (_fileChooser == null)
  59                 {
  60                         _fileChooser = new JFileChooser();
  61                         _fileChooser.addChoosableFileFilter(new GenericFileFilter("filetype.txt", new String[] {"txt", "text"}));
  62                         _fileChooser.addChoosableFileFilter(new GenericFileFilter("filetype.gpx", new String[] {"gpx"}));
  63                         _fileChooser.addChoosableFileFilter(new GenericFileFilter("filetype.kml", new String[] {"kml"}));
  64                         _fileChooser.addChoosableFileFilter(new GenericFileFilter("filetype.kmz", new String[] {"kmz"}));
  65                         _fileChooser.setAcceptAllFileFilterUsed(true);
  66                         // start from directory in config if already set (by load jpegs)
  67                         String configDir = Config.getConfigString(Config.KEY_TRACK_DIR);
  68                         if (configDir == null) {configDir = Config.getConfigString(Config.KEY_PHOTO_DIR);}
  69                         if (configDir != null) {_fileChooser.setCurrentDirectory(new File(configDir));}
  70                         _fileChooser.setMultiSelectionEnabled(true); // Allow multiple selections
  71                 }
  72                 // Show the open dialog
  73                 if (_fileChooser.showOpenDialog(_parentFrame) == JFileChooser.APPROVE_OPTION)
  74                 {
  75                         File[] files = _fileChooser.getSelectedFiles();
  76                         // Loop through files looking for files which exist and are readable
  77                         ArrayList<File> dataFiles = new ArrayList<File>();
  78                         if (files != null)
  79                         {
  80                                 for (int i=0; i<files.length; i++)
  81                                 {
  82                                         File file = files[i];
  83                                         if (file.exists() && file.isFile() && file.canRead())
  84                                         {
  85                                                 dataFiles.add(file);
  86                                         }
  87                                 }
  88                         }
  89                         if (dataFiles.size() > 0) {
  90                                 _app.loadDataFiles(dataFiles);
  91                         }
  92                         else
  93                         {
  94                                 // couldn't find any files to load - show error message
  95                                 _app.showErrorMessage("error.load.dialogtitle", "error.load.noread");
  96                         }
  97                 }
  98         }
  99
 100         /**
 101          * Open the selected input file
 102          * @param inFile file to open
 103          */
 104         public void openFile(File inFile)
 105         {
 106                 // Store directory in config for later
 107                 File parent = inFile.getParentFile();
 108                 if (parent != null) {
 109                         Config.setConfigString(Config.KEY_TRACK_DIR, parent.getAbsolutePath());
 110                 }
 111                 // Check file type to see if it's xml or just normal text
 112                 String fileExtension = inFile.getName().toLowerCase();
 113                 if (fileExtension.length() > 4) {
 114                         fileExtension = fileExtension.substring(fileExtension.length() - 4);
 115                 }
 116                 if (fileExtension.equals(".kml") || fileExtension.equals(".gpx")
 117                         || fileExtension.equals(".xml"))
 118                 {
 119                         // Use xml loader for kml, gpx and xml filenames
 120                         _xmlFileLoader.openFile(inFile);
 121                 }
 122                 else if (fileExtension.equals(".kmz") || fileExtension.equals(".zip"))
 123                 {
 124                         // Use zip loader for zipped kml (or zipped gpx)
 125                         _zipFileLoader.openFile(inFile);
 126                 }
 127                 else if (fileExtension.endsWith(".gz") || fileExtension.equals("gzip"))
 128                 {
 129                         // Use gzip loader for gzipped xml
 130                         _gzipFileLoader.openFile(inFile);
 131                 }
 132                 else if (fileExtension.equals("nmea"))
 133                 {
 134                         _nmeaFileLoader.openFile(inFile);
 135                 }
 136                 else if (fileExtension.equals(".jpg") || fileExtension.equals("jpeg"))
 137                 {
 138                         Photo photo = JpegLoader.createPhoto(inFile);
 139                         TreeSet<Photo> photoSet = new TreeSet<Photo>();
 140                         photoSet.add(photo);
 141                         _app.informPhotosLoaded(photoSet);
 142                         _app.informNoDataLoaded(); // To trigger load of next file if any
 143                 }
 144                 else
 145                 {
 146                         // Use text loader for everything else
 147                         _textFileLoader.openFile(inFile);
 148                 }
 149         }
 150
 151         /**
 152          * @return the last delimiter character used for a text file load
 153          */
 154         public char getLastUsedDelimiter()
 155         {
 156                 return _textFileLoader.getLastUsedDelimiter();
 157         }
 158 }