Use case: make positions depend on size of content of sheet

[GerdC]

I'd like to have positions of the sheet depend on the size of the content of the sheet.

There were some tweaks necessary, but it works for me now.

One problem I had to fix is this:
UBottomSheetCoordinator sets its private variables minSheetPosition and maxSheetPosition very early in the process, when it is impossible that the sheet had any chance to do a layout. So the height of the content of the sheet is 0 at this point of time.

my workaround is this:

    self.sheetCoordinator.addSheet(transitPlanViewController, to: self, didContainerCreate: { container in
        let f = self.view.frame
        let rect = CGRect(x: f.minX, y: f.minY, width: f.width, height: f.height)
        container.roundCorners(corners: [.topLeft, .topRight], radius: 10, rect: rect)
        self.sheetCoordinator.dataSource = dataSource // side effect: calculates private vars minSheetPosition + maxShetPosition from size of sheet after layout
    })

You might decide to do something similar in the library.
Maybe even a public method to recalculate minSheetPosition and maxSheetPosition after rotating the device.