filter((w)=>{
    let bounds = w.bounds();
    let left = Math.min(bounds.left,bounds.right);
    let right = Math.max(bounds.left,bounds.right);
    let top = Math.min(bounds.top,bounds.bottom);
    let bottom = Math.max(bounds.top,bounds.bottom);
    let screen = new android.graphics.Rect(0,0,device.width,device.height);
    return screen.contains(new android.graphics.Rect(left,top,right,bottom));
  })