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!7

sclass YouTubeDownloader extends DynModule {
  transient JTextArea ta;
  transient JTextField tfURL, tfDest;
  transient JButton btnGo;
  
  void start {
    doEvery(1000, r updateMe);
  }
  
  JComponent visualize() {
    tfURL = jtextfield();
    tfDest = jtextfield(desktopDir());
    onEnter(tfURL, r go);
    ret northAndCenterWithMargins(
      vstackWithSpacing(
        centerAndEast(withLabel("Video URL to download:", tfURL), btnGo = jbutton("Download", r go)),
        withLabel("Destination directory:", tfDest)),
      ta = typeWriterTextArea());
  }
  
  void unvisualize() { ta = null; }
  
  void update {
    if (ta != null) setText(ta, localPrintLog());
  }
  
  void go {
    thread "YouTube Download" {
      temp tempDisableButton(btnGo);
      installOrUpdateYouTubeDL();
      youtubeDownloadVideo(formatYouTubeURL(gtt(tfURL)), newFile(gtt(tfDest)));
    }
  }
}