reader/TuiReader.java

   1 package be.nikiroo.fanfix.reader;
   2
   3 import java.io.IOException;
   4
   5 import jexer.TApplication;
   6 import jexer.TApplication.BackendType;
   7 import be.nikiroo.fanfix.Instance;
   8
   9 /**
  10  * This {@link Reader}is based upon the TUI widget library 'jexer'
  11  * (https://github.com/klamonte/jexer/) and offer, as its name suggest, a Text
  12  * User Interface.
  13  * <p>
  14  * It is expected to be on par with the GUI version.
  15  *
  16  * @author niki
  17  */
  18 class TuiReader extends BasicReader {
  19         /**
  20          * Will detect the backend to use.
  21          * <p>
  22          * Swing is the default backend on Windows and MacOS while evreything else
  23          * will use XTERM unless explicitly overridden by <tt>jexer.Swing</tt> =
  24          * <tt>true</tt> or <tt>false</tt>.
  25          *
  26          * @return the backend to use
  27          */
  28         private static BackendType guessBackendType() {
  29                 // TODO: allow a config option to force one or the other?
  30                 TApplication.BackendType backendType = TApplication.BackendType.XTERM;
  31                 if (System.getProperty("os.name").startsWith("Windows")) {
  32                         backendType = TApplication.BackendType.SWING;
  33                 }
  34
  35                 if (System.getProperty("os.name").startsWith("Mac")) {
  36                         backendType = TApplication.BackendType.SWING;
  37                 }
  38
  39                 if (System.getProperty("jexer.Swing") != null) {
  40                         if (System.getProperty("jexer.Swing", "false").equals("true")) {
  41                                 backendType = TApplication.BackendType.SWING;
  42                         } else {
  43                                 backendType = TApplication.BackendType.XTERM;
  44                         }
  45                 }
  46
  47                 return backendType;
  48         }
  49
  50         @Override
  51         public void read() throws IOException {
  52                 try {
  53                         TuiReaderApplication app = new TuiReaderApplication(this,
  54                                         guessBackendType());
  55                         new Thread(app).start();
  56                 } catch (Exception e) {
  57                         Instance.syserr(e);
  58                 }
  59         }
  60
  61         @Override
  62         public void browse(String source) {
  63                 try {
  64                         TuiReaderApplication app = new TuiReaderApplication(this, source,
  65                                         guessBackendType());
  66                         new Thread(app).start();
  67                 } catch (Exception e) {
  68                         Instance.syserr(e);
  69                 }
  70         }
  71 }