public virtual void ShowModal(
Type view,
MvxModalPresentationAttribute attribute,
MvxViewModelRequest request)
{
ClosePlatformViews?.Invoke();
var page = CreatePage(view, request, attribute);
if (FormsApplication.MainPage == null)
{
FormsApplication.MainPage = new MvxNavigationPage(new MvxContentPage()
{
Title = nameof(MvxContentPage)
});
}
if (FormsApplication.MainPage is MvxNavigationPage navigationPage)
{
if (attribute.WrapInNavigationPage && navigationPage?.Navigation?.ModalStack?.LastOrDefault() is MvxNavigationPage modalNavigationPage)
{
PushOrReplacePage(modalNavigationPage, page, attribute);
}
else if (attribute.WrapInNavigationPage)
{
navigationPage.Navigation.PushModalAsync(new MvxNavigationPage(page), attribute.Animated);
}
else
{
navigationPage.Navigation.PushModalAsync(page, attribute.Animated);
}
}
else
{
if (attribute.WrapInNavigationPage && FormsApplication.MainPage?.Navigation?.ModalStack?.LastOrDefault() is MvxNavigationPage modalNavigationPage)
{
PushOrReplacePage(modalNavigationPage, page, attribute);
}
else if (attribute.WrapInNavigationPage && FormsApplication.MainPage?.Navigation != null)
{
FormsApplication?.MainPage?.Navigation?.PushModalAsync(new MvxNavigationPage(page), attribute.Animated);
}
else
{
FormsApplication?.MainPage?.Navigation?.PushModalAsync(page, attribute.Animated);
}
}
}
public virtual void ShowModal(
Type view,
MvxModalPresentationAttribute attribute,
MvxViewModelRequest request)
{
var page = CreatePage(view, request, attribute);
if (FormsApplication.MainPage is MvxNavigationPage navigationPage)
{
if (attribute.WrapInNavigationPage && navigationPage?.Navigation?.ModalStack?.LastOrDefault() is MvxNavigationPage modalNavigationPage)
{
if (attribute.NoHistory)
{
modalNavigationPage.PopToRootAsync(attribute.Animated);
}
modalNavigationPage.PushAsync(page, attribute.Animated);
}
else if (attribute.WrapInNavigationPage)
{
navigationPage.Navigation.PushModalAsync(new MvxNavigationPage(page), attribute.Animated);
}
else
{
navigationPage.Navigation.PushModalAsync(page, attribute.Animated);
}
}
else
{
if (attribute.WrapInNavigationPage && FormsApplication.MainPage?.Navigation?.ModalStack?.LastOrDefault() is MvxNavigationPage modalNavigationPage)
{
modalNavigationPage.PushAsync(page, attribute.Animated);
}
else if (attribute.WrapInNavigationPage && FormsApplication.MainPage?.Navigation != null)
{
FormsApplication.MainPage.Navigation.PushModalAsync(new MvxNavigationPage(page), attribute.Animated);
}
else
{
if (FormsApplication.MainPage?.Navigation == null)
{
FormsApplication.MainPage = new MvxNavigationPage(new MvxPage());
}
FormsApplication.MainPage.Navigation.PushModalAsync(page, attribute.Animated);
}
}
}
private Task <bool> ShowAlertView(
Type viewType,
MvxAlertPresentationAttribute attribute,
MvxViewModelRequest request
)
{
var viewController = this.CreateViewControllerFor(request);
if (!(viewController is IMvxAlertViewController alertViewController))
{
return(Task.FromResult(false));
}
var alertController = alertViewController.Wrap(attribute, this);
var modalPresentationAttribute = new MvxModalPresentationAttribute
{
WrapInNavigationController = false
};
return(ShowModalViewController(alertController, modalPresentationAttribute, request));
}
public virtual async Task <bool> ShowModal(
Type view,
MvxModalPresentationAttribute attribute,
MvxViewModelRequest request)
{
var page = await CloseAndCreatePage(view, request, attribute, closeModal : false);
if (FormsApplication.MainPage == null)
{
FormsApplication.MainPage = CreateNavigationPage(CreateContentPage().Build(cp => cp.Title = nameof(ContentPage)));
}
if (attribute.WrapInNavigationPage)
{
if (GetModalPageOfType <NavigationPage>() is NavigationPage modalNavigation)
{
// There's already a navigation page, so use existing logic
// to work out whether the nav stack should be cleared (eg No History)
await PushOrReplacePage(modalNavigation, page, attribute);
}
else
{
// Either last isn't a nav page, or there is no last page
// So, wrap the current page in a nav page and push onto stack
var navigationPage = CreateNavigationPage(page);
navigationPage.SetModalPagePresentationStyle(attribute.PresentationStyle);
await FormsApplication.MainPage.Navigation.PushModalAsync(navigationPage);
}
}
else
{
page.SetModalPagePresentationStyle(attribute.PresentationStyle);
// No navigation page required, so just push onto modal stack
await FormsApplication.MainPage.Navigation.PushModalAsync(page, attribute.Animated);
}
return(true);
}
public virtual void ShowModal(
Type view,
MvxModalPresentationAttribute attribute,
MvxViewModelRequest request)
{
var page = CloseAndCreatePage(view, request, attribute, closeModal: false);
if (FormsApplication.MainPage == null)
{
FormsApplication.MainPage = new MvxNavigationPage(new MvxContentPage()
{
Title = nameof(ContentPage)
});
}
var last = FormsApplication.MainPage.Navigation.ModalStack.LastOrDefault();
if (attribute.WrapInNavigationPage)
{
if (last is NavigationPage navPage)
{
// There's already a navigation page, so use existing logic
// to work out whether the nav stack should be cleared (eg No History)
PushOrReplacePage(navPage, page, attribute);
}
else
{
// Either last isn't a nav page, or there is no last page
// So, wrap the current page in a nav page and push onto stack
FormsApplication.MainPage.Navigation.PushModalAsync(new MvxNavigationPage(page));
}
}
else
{
// No navigation page required, so just push onto modal stack
FormsApplication.MainPage.Navigation.PushModalAsync(page, attribute.Animated);
}
}
public virtual void ShowModal(
Type view,
MvxModalPresentationAttribute attribute,
MvxViewModelRequest request)
{
var page = CreatePage(view, request);
if (FormsApplication.MainPage is MvxNavigationPage navigationPage)
{
if (attribute.WrapInNavigationPage && navigationPage.Navigation.ModalStack.LastOrDefault() is MvxNavigationPage modalNavigationPage)
{
modalNavigationPage.PushAsync(page);
}
else if (attribute.WrapInNavigationPage)
{
navigationPage.Navigation.PushModalAsync(new MvxNavigationPage(page));
}
else
{
navigationPage.Navigation.PushModalAsync(page);
}
}
else
{
if (attribute.WrapInNavigationPage && FormsApplication.MainPage.Navigation.ModalStack.LastOrDefault() is MvxNavigationPage modalNavigationPage)
{
modalNavigationPage.PushAsync(page);
}
else if (attribute.WrapInNavigationPage)
{
FormsApplication.MainPage.Navigation.PushModalAsync(new MvxNavigationPage(page));
}
else
{
FormsApplication.MainPage.Navigation.PushModalAsync(page);
}
}
}
protected virtual bool CloseModalViewController(IMvxViewModel toClose, MvxModalPresentationAttribute attribute)
{
if (ModalViewControllers == null || !ModalViewControllers.Any())
{
return(false);
}
// check for plain modals
var modalToClose = ModalViewControllers.FirstOrDefault(v => v is IMvxIosView && v.GetIMvxIosView().ViewModel == toClose);
if (modalToClose != null)
{
CloseModalViewController(modalToClose, attribute);
return(true);
}
// check for modal navigation stacks
UIViewController controllerToClose = null;
foreach (var vc in ModalViewControllers.Where(v => v is UINavigationController))
{
var root = ((UINavigationController)vc).ViewControllers.FirstOrDefault();
if (root != null && root.GetIMvxIosView().ViewModel == toClose)
{
controllerToClose = vc;
break;
}
}
if (controllerToClose != null)
{
CloseModalViewController(controllerToClose, attribute);
return(true);
}
return(false);
}
protected virtual bool CloseModalViewController(IMvxViewModel viewModel, MvxModalPresentationAttribute attribute)
{
return(CloseModalViewController(viewModel));
}
public virtual async Task <bool> CloseModalViewController(UIViewController viewController, MvxModalPresentationAttribute attribute)
{
if (viewController == null)
{
return(true);
}
if (viewController is UINavigationController modalNavController)
{
foreach (var item in modalNavController.ViewControllers)
{
item.DidMoveToParentViewController(null);
}
}
await viewController.DismissViewControllerAsync(attribute.Animated);
ModalViewControllers.Remove(viewController);
return(true);
}
public virtual void CloseModalViewController(UIViewController viewController, MvxModalPresentationAttribute attribute)
{
if (viewController == null)
{
return;
}
if (viewController is UINavigationController modalNavController)
{
foreach (var item in modalNavController.ViewControllers)
{
item.DidMoveToParentViewController(null);
}
}
viewController.DismissViewController(attribute.Animated, null);
ModalViewControllers.Remove(viewController);
}
public MvxModalPresentationControllerDelegate(IMvxIosViewPresenter presenter, UIViewController viewController, MvxModalPresentationAttribute attribute)
{
_presenter = presenter;
_viewController = viewController;
_attribute = attribute;
}
