public override void ReplacePageRoot(Page existingPage, Page page, MvxPagePresentationAttribute attribute)
{
if (existingPage == this.FormsApplication.MainPage)
{
FormsApplication.MainPage = page;
}
}
protected virtual Task <bool> ShowPageViewController(
UIViewController viewController,
MvxPagePresentationAttribute attribute,
MvxViewModelRequest request)
{
if (PageViewController == null)
{
throw new MvxException("Trying to show a page without a PageViewController, this is not possible!");
}
/*if (viewController is IMvxTabBarItemViewController tabBarItem)
* {
* attribute.TabName = tabBarItem.TabName;
* attribute.TabIconName = tabBarItem.TabIconName;
* attribute.TabSelectedIconName = tabBarItem.TabSelectedIconName;
* }*/
if (attribute.WrapInNavigationController)
{
viewController = CreateNavigationController(viewController);
}
PageViewController.AddPage(
viewController,
attribute);
return(Task.FromResult(true));
}
public override ValueTask <MvxBasePresentationAttribute?> CreatePresentationAttribute(Type?viewModelType, Type?viewType)
{
MvxLog.Instance.Trace($"PresentationAttribute not found for {viewType?.Name}. Assuming new page presentation");
var attribute = new MvxPagePresentationAttribute()
{
ViewType = viewType, ViewModelType = viewModelType
};
return(new ValueTask <MvxBasePresentationAttribute?>(attribute));
}
public virtual void AddPage(UIViewController viewController, MvxPagePresentationAttribute attribute)
{
// add Page
Pages.Add(viewController);
// Start the ui page view controller when we add the first page
if (Pages.Count == 1)
{
SetViewControllers(Pages.ToArray(), UIPageViewControllerNavigationDirection.Forward, true, null);
}
}
protected virtual Page CloseAndCreatePage(Type view,
MvxViewModelRequest request,
MvxPagePresentationAttribute attribute,
bool closeModal = true,
bool closePlatformViews = true,
bool showPlatformViews = true)
{
if (closeModal)
{
CloseAllModals();
}
if (closePlatformViews)
{
ClosePlatformViews?.Invoke();
}
if (showPlatformViews)
{
ShowPlatformHost?.Invoke(attribute.HostViewModelType);
}
return(CreatePage(view, request, attribute));
}
protected virtual async Task <Page> CloseAndCreatePage(Type view,
MvxViewModelRequest request,
MvxPagePresentationAttribute attribute,
bool closeModal = true,
bool closePlatformViews = true,
bool showPlatformViews = true)
{
if (closeModal)
{
await CloseAllModals();
}
if (closePlatformViews)
{
PlatformPresenter.ClosePlatformViews();
}
if (showPlatformViews)
{
PlatformPresenter.ShowPlatformHost(attribute.HostViewModelType);
}
return(CreatePage(view, request, attribute));
}
protected virtual Task <bool> ClosePageViewController(IMvxViewModel viewModel, MvxPagePresentationAttribute attribute)
{
if (PageViewController != null && PageViewController.RemovePage(viewModel))
{
return(Task.FromResult(true));
}
return(Task.FromResult(false));
}
private MvxPagePresentationAttribute GetPresenterAttribue(Type type)
{
return(_presenterAttribute = (MvxPagePresentationAttribute)type.GetCustomAttributes(true).First(a => a.GetType().Namespace.StartsWith("MvvmCross", StringComparison.OrdinalIgnoreCase)));
}
public override void ReplacePageRoot(Xamarin.Forms.Page existingPage, Xamarin.Forms.Page page, MvxPagePresentationAttribute attribute)
{
try
{
base.ReplacePageRoot(existingPage, page, attribute);
}
catch (Exception e)
{
Logger.Log(MvxLogLevel.Debug, () => e.ToString());
}
}
