protected virtual async Task <bool> ShowMasterDetailSplitViewController(
UIViewController viewController,
MvxMasterDetailPresentationAttribute attribute,
MvxViewModelRequest request)
{
if (SplitViewController != null && attribute.Position == MasterDetailPosition.Master)
{
return(await ShowMasterView(viewController, attribute.WrapInNavigationController));
}
else if (SplitViewController != null && attribute.Position == MasterDetailPosition.Detail)
{
return(await ShowDetailView(viewController, attribute.WrapInNavigationController));
}
else if (viewController is MvxSplitViewController && attribute.Position == MasterDetailPosition.Root)
{
SplitViewController = (MvxSplitViewController)viewController;
// set root
await SetupSplitViewWindowRootNavigation(viewController, attribute);
await CloseModalViewControllers();
await CloseTabBarViewController();
}
else
{
throw new MvxException("Trying to show a master page without a SplitViewController, this is not possible!");
}
return(true);
}
protected void SetupSplitViewWindowRootNavigation(UIViewController viewController,
MvxMasterDetailPresentationAttribute attribute)
{
if (attribute.WrapInNavigationController)
{
MasterNavigationController = CreateNavigationController(viewController);
SetWindowRootViewController(MasterNavigationController);
}
else
{
SetWindowRootViewController(viewController);
CloseMasterNavigationController();
}
}
protected ValueTask <bool> SetupSplitViewWindowRootNavigation(UIViewController viewController,
MvxMasterDetailPresentationAttribute attribute)
{
if (attribute.WrapInNavigationController)
{
MasterNavigationController = CreateNavigationController(viewController);
SetWindowRootViewController(MasterNavigationController);
}
else
{
SetWindowRootViewController(viewController);
return(CloseMasterNavigationController());
}
return(new ValueTask <bool>(true));
}
protected virtual async Task <bool> CloseDetailSplitViewController(IMvxViewModel viewModel, MvxMasterDetailPresentationAttribute attribute)
{
if (SplitViewController != null && await CloseChildViewModel(viewModel).ConfigureAwait(false))
{
return(true);
}
return(true);
}
protected virtual async Task <bool> CloseMasterSplitViewController(IMvxViewModel viewModel, MvxMasterDetailPresentationAttribute attribute)
{
if (SplitViewController != null &&
attribute.Position != MasterDetailPosition.Root &&
await CloseChildViewModel(viewModel))
{
return(true);
}
else if (attribute.Position == MasterDetailPosition.Root)
{
return(false);
}
return(true);
}
protected virtual bool CloseDetailSplitViewController(IMvxViewModel viewModel, MvxMasterDetailPresentationAttribute attribute)
{
if (SplitViewController != null && CloseChildViewModel(viewModel))
{
return(true);
}
return(true);
}