public NavigationRenderer() : base(typeof(FormsNavigationBar), null)
{
MessagingCenter.Subscribe<IVisualElementRenderer>(this, UpdateToolbarButtons, sender =>
{
if (!ViewControllers.Any())
return;
var parentingViewController = (ParentingViewController)ViewControllers.Last();
parentingViewController?.UpdateLeftBarButtonItem();
});
}
public NavigationRenderer()
{
MessagingCenter.Subscribe <IVisualElementRenderer>(this, UpdateToolbarButtons, sender =>
{
if (!ViewControllers.Any())
{
return;
}
var parentingViewController = (ParentingViewController)ViewControllers.Last();
UpdateLeftBarButtonItem(parentingViewController);
});
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
if (!ViewControllers.Any())
{
return;
}
var parentingViewController = ViewControllers.Last();
UpdateLeftBarButton(parentingViewController);
}
public virtual bool CloseChildViewModel(IMvxViewModel viewModel, MvxBasePresentationAttribute attribute)
{
if (!ViewControllers.Any())
{
return(false);
}
var toClose = ViewControllers.ToList()
.Select(v => v.GetIMvxIosView())
.FirstOrDefault(mvxView => mvxView.ViewModel == viewModel);
if (toClose != null)
{
var newStack = ViewControllers.Where(v => v.GetIMvxIosView() != toClose);
ViewControllers = newStack.ToArray();
return(true);
}
return(false);
}
public virtual bool CloseTabViewModel(IMvxViewModel viewModel)
{
if (ViewControllers == null || !ViewControllers.Any())
{
return(false);
}
// loop through plain Tabs
var plainToClose = ViewControllers.Where(v => !(v is UINavigationController))
.Select(v => v.GetIMvxTvosView())
.FirstOrDefault(mvxView => mvxView.ViewModel == viewModel);
if (plainToClose != null)
{
RemoveTabController((UIViewController)plainToClose);
return(true);
}
// loop through nav stack Tabs
UIViewController toClose = null;
foreach (var vc in ViewControllers.Where(v => v is UINavigationController))
{
var root = ((UINavigationController)vc).ViewControllers.FirstOrDefault();
var vcFromRoot = root.GetIMvxTvosView();
if (root != null && vcFromRoot.ViewModel == viewModel)
{
toClose = root;
break;
}
}
if (toClose != null)
{
RemoveTabController((UIViewController)toClose);
return(true);
}
return(false);
}
private void ReloadViewControllers()
{
if (DataSource == null)
{
throw new NullReferenceException("DataSource cannot be null");
}
else
{
ViewControllers = DataSource.ViewControllersForPagerTabStrip(this);
// viewControllers
if (!ViewControllers.Any())
{
throw new Exception("ViewControllersForPagerTabStrip should provide at least one child view controller");
}
foreach (UIViewController childController in ViewControllers)
{
if (!(childController is IIndicatorInfoProvider))
{
throw new Exception("Every view controller provided by PagerTabStripDataSource's viewControllersForPagerTabStrip method must conform to InfoProvider");
}
}
}
}
public virtual void PushView(IMXView view)
{
PushViewController(TouchFactory.GetNativeObject <UIViewController>(view, "view"), ViewControllers.Any(vc => !(vc is VanityView)));
}