/// <summary>
/// Navigates to the target page type without playing any animations
/// </summary>
/// <param name="pageType">The type of the target page</param>
/// <param name="parameter">The optional parameter</param>
public bool NavigateWithoutAnimations(Type pageType, [Optional] object parameter)
{
bool eventPending = IsEmpty;
bool result = base.Navigate(pageType, parameter);
if (eventPending)
{
EmptyContentStateChanged?.Invoke(this, false);
}
return(result);
}
/// <summary>
/// Clears the Frame content and its navigation stack without any animation
/// </summary>
public void ResetFrame()
{
BackStack.Clear();
if (Content != null)
{
try
{
// This call causes the current page to execute the OnNavigatedFrom method
GetNavigationState();
}
catch
{
// Doesn't matter
}
}
Content = null;
EmptyContentStateChanged?.Invoke(this, true);
}
/// <summary>
/// Navigates to the target page type
/// </summary>
/// <param name="pageType">The type of the target page</param>
/// <param name="parameter">The optional parameter</param>
public new async Task <bool> Navigate(Type pageType, [Optional] object parameter)
{
// Avoid accidental inputs while the Frame is navigating
IsHitTestVisible = false;
// Create the TaskCompletionSource to await the end of the async method
TaskCompletionSource <bool> tcs = new TaskCompletionSource <bool>();
// Prepare the action that will call the base navigation method and finish the animations
Action <bool> finishNavigation = async empty =>
{
// Set the CustomFrame up before the navigation
Opacity = 0;
bool navResult = base.Navigate(pageType, parameter);
if (empty)
{
BackStack.Clear();
}
FrameworkContent.SetVisualOpacity(0);
Opacity = 1;
// Setup the right animation
await GetContentForwardInStoryboard();
IsHitTestVisible = true;
tcs.SetResult(navResult);
};
// If the current content is not null, animate the fade out for the current page
if (Content != null)
{
await GetContentForwardOutStoryboard();
finishNavigation(false);
}
else
{
EmptyContentStateChanged?.Invoke(this, false);
finishNavigation(true);
}
// Wait for all the animations to finish and then return the navigation result
return(await tcs.Task);
}
