git.gag.com Git - debian/openrocket/blob - src/net/sf/openrocket/util/SaveCSVWorker.java

   1 package net.sf.openrocket.util;
   2
   3 import java.awt.Window;
   4 import java.io.BufferedOutputStream;
   5 import java.io.File;
   6 import java.io.FileOutputStream;
   7 import java.io.IOException;
   8 import java.util.concurrent.ExecutionException;
   9
  10 import javax.swing.JOptionPane;
  11 import javax.swing.SwingWorker;
  12
  13 import net.sf.openrocket.document.Simulation;
  14 import net.sf.openrocket.file.CSVExport;
  15 import net.sf.openrocket.gui.dialogs.SwingWorkerDialog;
  16 import net.sf.openrocket.gui.main.ExceptionHandler;
  17 import net.sf.openrocket.simulation.FlightDataBranch;
  18 import net.sf.openrocket.simulation.FlightDataBranch.Type;
  19 import net.sf.openrocket.unit.Unit;
  20
  21
  22 public class SaveCSVWorker extends SwingWorker<Void, Void> {
  23
  24         private static final int BYTES_PER_FIELD_PER_POINT = 7;
  25
  26         private final File file;
  27         private final Simulation simulation;
  28         private final FlightDataBranch branch;
  29         private final FlightDataBranch.Type[] fields;
  30         private final Unit[] units;
  31         private final String fieldSeparator;
  32         private final String commentStarter;
  33         private final boolean simulationComments;
  34         private final boolean fieldComments;
  35         private final boolean eventComments;
  36
  37
  38         public SaveCSVWorker(File file, Simulation simulation, FlightDataBranch branch,
  39                         Type[] fields, Unit[] units, String fieldSeparator, String commentStarter,
  40                         boolean simulationComments, boolean fieldComments, boolean eventComments) {
  41                 this.file = file;
  42                 this.simulation = simulation;
  43                 this.branch = branch;
  44                 this.fields = fields;
  45                 this.units = units;
  46                 this.fieldSeparator = fieldSeparator;
  47                 this.commentStarter = commentStarter;
  48                 this.simulationComments = simulationComments;
  49                 this.fieldComments = fieldComments;
  50                 this.eventComments = eventComments;
  51         }
  52
  53
  54         @Override
  55         protected Void doInBackground() throws Exception {
  56
  57                 int estimate = BYTES_PER_FIELD_PER_POINT * fields.length * branch.getLength();
  58                 estimate = Math.max(estimate, 1000);
  59
  60                 // Create the ProgressOutputStream that provides progress estimates
  61                 ProgressOutputStream os = new ProgressOutputStream(
  62                                 new BufferedOutputStream(new FileOutputStream(file)),
  63                                 estimate, this) {
  64
  65                         @Override
  66                         protected void setProgress(int progress) {
  67                                 SaveCSVWorker.this.setProgress(progress);
  68                         }
  69
  70                 };
  71
  72                 try {
  73                         CSVExport.exportCSV(os, simulation, branch, fields, units, fieldSeparator,
  74                                         commentStarter, simulationComments, fieldComments, eventComments);
  75                 } finally {
  76                         try {
  77                                 os.close();
  78                         } catch (Exception e) {
  79                                 ExceptionHandler.handleErrorCondition("Error closing file", e);
  80                         }
  81                 }
  82                 return null;
  83         }
  84
  85
  86
  87         /**
  88          * Exports a CSV file using a progress dialog if necessary.
  89          *
  90          * @return      <code>true</code> if the save was successful, <code>false</code> otherwise.
  91          */
  92         public static boolean export(File file, Simulation simulation, FlightDataBranch branch,
  93                         Type[] fields, Unit[] units, String fieldSeparator, String commentStarter,
  94                         boolean simulationComments, boolean fieldComments, boolean eventComments,
  95                         Window parent) {
  96
  97
  98                 SaveCSVWorker worker = new SaveCSVWorker(file, simulation, branch, fields, units,
  99                                 fieldSeparator, commentStarter, simulationComments, fieldComments,
 100                                 eventComments);
 101
 102             if (!SwingWorkerDialog.runWorker(parent, "Exporting flight data",
 103                         "Writing " + file.getName() + "...", worker)) {
 104
 105                 // User cancelled the save
 106                 file.delete();
 107                 return false;
 108             }
 109
 110             try {
 111                         worker.get();
 112                 } catch (ExecutionException e) {
 113                         Throwable cause = e.getCause();
 114
 115                         if (cause instanceof IOException) {
 116                         JOptionPane.showMessageDialog(parent, new String[] {
 117                                         "An I/O error occurred while saving:",
 118                                         e.getMessage() }, "Saving failed", JOptionPane.ERROR_MESSAGE);
 119                         return false;
 120                         } else {
 121                                 throw new BugException("Unknown error when saving file", e);
 122                         }
 123
 124                 } catch (InterruptedException e) {
 125                         throw new BugException("EDT was interrupted", e);
 126                 }
 127
 128                 return true;
 129         }
 130 }