protected void NavigateBack(Action done = null, BackBehaviour behaviour = BackBehaviour.CloseLastSubView)
{
Mvvm.Api.Resolver.Resolve <INavigation>().NavigateBack(() =>
{
done?.Invoke();
},
behaviour);
}
protected void NavigateBack(IPayload payload, Action done = null, BackBehaviour behaviour = BackBehaviour.CloseLastSubView)
{
if (CallbackAction == null)
{
return;
}
// Set payload id
var payloadId = Guid.NewGuid();
// Add payload
var payloads = Mvvm.Api.Resolver.Resolve <IPayloads>();
payloads.Add(payloadId, payload);
Mvvm.Api.Resolver.Resolve <INavigation>().NavigateBack(CallbackAction,
payloadId,
() => done?.Invoke(),
behaviour);
}
public void NavigateBack(Action <Guid> callbackAction, Guid payloadId, Action done = null, BackBehaviour behaviour = BackBehaviour.CloseLastSubView)
{
_appNavigation.NavigateBack(callbackAction, payloadId, done, behaviour);
}
public void NavigateBack(Action done = null, BackBehaviour behaviour = BackBehaviour.CloseLastSubView)
{
_appNavigation.NavigateBack(done, behaviour);
}
public void NavigateBack(Action <Guid> callbackAction, Guid payloadId, Action done = null, BackBehaviour behaviour = BackBehaviour.CloseLastSubView)
{
NavigateBack(() =>
{
callbackAction.Invoke(payloadId);
done?.Invoke();
}, behaviour);
}
public void NavigateBack(Action done = null, BackBehaviour behaviour = BackBehaviour.CloseLastSubView)
{
// Check the navigation controller
if (GetNavigationController()?.VisibleViewController == null)
{
System.Diagnostics.Debug.WriteLine("AppNavigation.NavigateBack: Could not find a navigation controller or a visible VC!");
return;
}
// Get the current VC
var currentVC = GetNavigationController().VisibleViewController as IViewControllerBase;
if (currentVC == null)
{
throw new Exception("The current VC does not implement IViewControllerBase!");
}
// Check if we have SubViews
int subViewCountThreshold = 0;
switch (behaviour)
{
case BackBehaviour.CloseLastSubView:
subViewCountThreshold = 0;
break;
case BackBehaviour.SkipFromLastSubView:
subViewCountThreshold = 1;
break;
case BackBehaviour.FullViewsOnly:
subViewCountThreshold = int.MaxValue;
break;
}
if (SubViewNavigationStack?.Count > subViewCountThreshold)
{
// Remove the current subview from the stack
var subView = SubViewNavigationStack.Pop();
subView?.RemoveFromParentViewController();
subView = null;
if (SubViewNavigationStack.Count > 0)
{
// Subviews left -> Inflate the next one
InflateSubView(SubViewNavigationStack.Pop());
done?.Invoke();
return;
}
RemoveAllSubViews();
done?.Invoke();
return;
}
// Remove all subviews
RemoveAllSubViews();
SubViewNavigationStack?.Clear();
// Dismiss the VC
if (currentVC.AsModal)
{
GetNavigationController()?.DismissViewController(true, () =>
{
done?.Invoke();
});
}
else
{
GetNavigationController()?.PopViewController(true);
done?.Invoke();
}
}
private void NavigateBackInternal(Action callbackListener, Action done = null, BackBehaviour behaviour = BackBehaviour.CloseLastSubView)
{
if (GetContext() is AppCompatActivity activity)
{
int subViewCountThreshold = 0;
switch (behaviour)
{
case BackBehaviour.CloseLastSubView:
subViewCountThreshold = 0;
break;
case BackBehaviour.SkipFromLastSubView:
subViewCountThreshold = 1;
break;
case BackBehaviour.FullViewsOnly:
subViewCountThreshold = int.MaxValue;
break;
}
if (activity.SupportFragmentManager?.BackStackEntryCount <= subViewCountThreshold)
{
callbackListener?.Invoke();
if (CanUseActivityTransitions)
{
activity.FinishAfterTransition();
}
else
{
activity.Finish();
}
}
else
{
try
{
activity.SupportFragmentManager?.PopBackStackImmediate();
}
catch
{
// swallow exceptions, there's a bug in FragmentManager.java
}
callbackListener?.Invoke();
}
done?.Invoke();
}
else
{
System.Diagnostics.Debug.WriteLine("AppNavigation.NavigateBack: Context is null or not an activity!");
}
}
public void NavigateBack(Action done = null, BackBehaviour behaviour = BackBehaviour.CloseLastSubView)
{
NavigateBackInternal(null, done, behaviour);
}
