private async Task TurnPage(bool isRight)
{
_oldOffset = null;
await _event.WaitAsync();
AppBar.CancelPageSelectionMode();
if (isRight)
{
await _readController.ShowNextPage();
}
else
{
await _readController.ShowPrevPage();
}
ViewModel.TokenOffset = _readController.Offset;
AppBar.PageNumber = _readController.CurrentPage;
PageCanvas.Manipulator.IsFirstPage = _readController.IsFirst;
PageCanvas.Manipulator.IsLastPage = _readController.IsLast;
PageCanvas.Manipulator.UpdatePanelsVisibility();
_event.Release();
}
private async Task CreateController()
{
using (await BusyOverlay.Create())
{
_book = _bookRepository.Get(ViewModel.BookId);
if (_book == null)
{
return;
}
_readController = new ReadController(PageCanvas, ViewModel.BookId, _bookRepository, ViewModel.TokenOffset);
await _readController.ShowNextPage();
PageCanvas.Manipulator.UpdatePanelsVisibility();
PageCanvas.Manipulator.IsFirstPage = _readController.IsFirst;
PageCanvas.Manipulator.IsLastPage = _readController.IsLast;
AppBar.TotalPages = _readController.TotalPages;
AppBar.PageNumber = _readController.CurrentPage;
AppBar.MenuItems[2].IsEnabled = ViewModel.CanPinToDesktop;
if (_book.Trial)
{
AppBar.IconButtons = CreateAppBarIconsForTrial();
}
else
{
AppBar.IconButtons[2].IsEnabled = true;
UpdateIsFavouriteAppBarButton(_book.IsFavourite);
}
}
}
