concept Screenshot {
  S pngPath; // optional, relative (program ID + "/" + file name)
  Rect r; // optional, rectangle that was shot
  
  *() {} // for persistance
  *(BufferedImage img) {
    savePNG(pngFile(), img);
  }

  File pngFile() {
    if (pngPath != null)
      ret prepareFile(new File(javaxDataDir(), pngPath));
    ret prepareProgramFile(_programID(), "screenshot" + id + ".png");
  }
  
  BufferedImage loadImage() {
    ret loadImage2(pngFile());
  }
  
  bool hasImage() {
    ret pngFile().exists();
  }
}

Screenshot > TransientScreenshot {
  transient BufferedImage img;
  
  *() {} // for persistance
  *(BufferedImage *img) {}
  
  bool hasImage() { ret img != null; }
  BufferedImage loadImage() { ret img; }
  
  void disposeImage() { img = null; }
}

Clip > MarkedClip {
  new Ref<Screenshot> screenshot;
  Rect positionInScreenshot;
}

concept Clip {
  long originalID; // ID in #1005389
  BWImage img;
  S description;
}

concept Found {
  new Ref<Screenshot> screenshot;
  new Ref<Clip> clip;
  FoundImg fi; // contains Rect r
}

concept FullySearched {
  new Ref<Screenshot> screenshot;
  new Ref<Clip> clip;
}