/// <summary>
/// If possible, discards the current page and displays the previous page
/// on the navigation stack.
/// </summary>
public void GoBack()
{
CheckFrame();
if (_stack.Count >= 2)
{
// Remove current content
var oldContent = _stack.Pop();
(oldContent as INavigable)?.OnNavigatingFrom();
if (_animationManager == null)
{
// Add the last entry in the stack to the UI
_frame.Content = _stack.Peek();
(_frame.Content as INavigable)?.OnNavigatedTo();
}
else
{
var newContent = _stack.Peek();
_animationManager.Animate(
newContent,
old =>
{
(newContent as INavigable)?.OnNavigatedTo();
});
}
}
}
