public override UIViewController PopViewController(bool animated)
{
var c = ViewControllers.LastOrDefault();
Router.BackAsync();
return(c);
}
public override UIViewController PopViewController(bool animated)
{
if (ViewControllers.Length <= 2)
{
var vc = ViewControllers.LastOrDefault();
DismissViewController(animated, () => base.PopViewController(false));
return(vc);
}
return(base.PopViewController(animated));
}
public override void PushViewController(UIViewController viewController, bool animated)
{
if (ViewControllers.Length <= 0)
{
// NOTE: pushViewController is called by init(rootViewController: UIViewController)
// so we must perform the normal super method in this case.
base.PushViewController(viewController, animated: true);
return;
}
UINavigationController presentingViewController = null;
if (PresentingViewController is UINavigationController)
{
presentingViewController = PresentingViewController as UINavigationController;
}
else if (PresentingViewController is UITabBarController)
{
presentingViewController = ((UITabBarController)PresentingViewController).SelectedViewController as UINavigationController;
}
if (presentingViewController == null)
{
PresentViewController(viewController, animated, null);
System.Diagnostics.Debug.WriteLine("SideMenu Warning: cannot push a ViewController from a ViewController without a NavigationController. It will be presented it instead.");
return;
}
// to avoid overlapping dismiss & pop/push calls, create a transaction block where the menu
// is dismissed after showing the appropriate screen
CATransaction.Begin();
CATransaction.CompletionBlock = () =>
{
if (SideMenuManager.MenuPushStyle != SideMenuManager.MenuPushStyleType.NoNavigation)
{
this.DismissViewController(true, null);
}
this.VisibleViewController?.ViewWillAppear(false); // Hack: force selection to get cleared on UITableViewControllers when reappearing using custom transitions
};
UIView.Animate(SideMenuManager.AnimationDismissDuration, animation: () => SideMenuManager.SideMenuTransition.HideMenuStart());
if (!SideMenuManager.AllowPushOfSameClassTwice)
{
//TODO: Review this
var lastView = ViewControllers.LastOrDefault();
if (lastView != null && lastView.GetType() == viewController.GetType()) //if presentingViewController.viewControllers.last?.dynamicType == viewController.dynamicType {
{
CATransaction.Commit();
return;
}
}
switch (SideMenuManager.MenuPushStyle)
{
case SideMenuManager.MenuPushStyleType.SubMenu:
case SideMenuManager.MenuPushStyleType.DefaultBehavior:
break;
case SideMenuManager.MenuPushStyleType.PopWhenPossible:
foreach (var subViewController in presentingViewController.ViewControllers.Reverse())
{
if (subViewController.GetType() == viewController.GetType())
{
presentingViewController.PopToViewController(subViewController, animated: animated);
CATransaction.Commit();
return;
}
}
break;
case SideMenuManager.MenuPushStyleType.Preserve:
case SideMenuManager.MenuPushStyleType.PreserveAndHideBackButton:
var viewControllers = presentingViewController.ViewControllers;
var preservedViewController = viewControllers.Where(x => x.GetType() == viewController.GetType()).LastOrDefault();
if (preservedViewController != null)
{
if (SideMenuManager.MenuPushStyle == SideMenuManager.MenuPushStyleType.PreserveAndHideBackButton)
{
preservedViewController.NavigationItem.SetHidesBackButton(true, false);
}
viewControllers.Append(preservedViewController);
presentingViewController.SetViewControllers(viewControllers, animated: animated);
CATransaction.Commit();
return;
}
if (SideMenuManager.MenuPushStyle == SideMenuManager.MenuPushStyleType.PreserveAndHideBackButton)
{
viewController.NavigationItem.SetHidesBackButton(true, false);
}
break;
case SideMenuManager.MenuPushStyleType.Replace:
case SideMenuManager.MenuPushStyleType.NoNavigation:
if (SideMenuManager.MenuPushStyle != SideMenuManager.MenuPushStyleType.NoNavigation)
{
viewController.NavigationItem.LeftBarButtonItem = SideMenuManager.LeftNavigationController.NavigationItem.LeftBarButtonItem;
viewController.NavigationItem.RightBarButtonItem = SideMenuManager.LeftNavigationController.NavigationItem.RightBarButtonItem;
}
else
{
viewController.NavigationItem.SetHidesBackButton(true, false);
}
UIViewController[] viewctrl = { viewController };
presentingViewController.SetViewControllers(viewctrl, true);
CATransaction.Commit();
return;
default:
break;
}
presentingViewController.PushViewController(viewController, animated: animated);
CATransaction.Commit();
}