private void NavigationLogic(ShowViewEvent evt)
{
if (CurrentView != null && CurrentView.ID == evt.ID)
{
return;
}
if (evt.ID == ViewList.Views.Back && PreviousView != null)
{
if (PreviousView.Count() > 0)
{
CurrentView = PreviousView.Pop();
if (CurrentView != null && !CurrentView.IsOverLay)
{
PreviousView.Clear();
}
}
return;
}
if (AvalableViews.ContainsKey(evt.ID))
{
PreviousView.Push(CurrentView);
CurrentView = AvalableViews[evt.ID];
if (!CurrentView.IsOverLay)
{
PreviousView.Clear();
}
}
FocusManager.SetIsFocusScope((DependencyObject)CurrentView.View, true);
CommandManager.InvalidateRequerySuggested();
}
/// <summary>
/// Navigates the back.
/// </summary>
public void NavigateBack()
{
ContentHost.Children.Clear();
if (PreviousView.Peek() != null)
{
CurrentView = PreviousView.Pop();
}
ContentHost.Children.Add(CurrentView);
}
/// <summary>
/// Navigates to the target view without saving previous page.
/// </summary>
/// <param name="view">The view.</param>
public void NavigateWithoutBackTo(UIElement view)
{
CurrentView = null;
CurrentView = view;
ContentHost.Children.Clear();
ContentHost.Children.Add(CurrentView);
if (PreviousView.Count > 0)
{
PreviousView.Pop();
}
}
/// <summary>
/// Navigates to the target view.
/// </summary>
/// <param name="view">The view.</param>
public void NavigateTo(UIElement view)
{
if (CurrentView == null)
{
CurrentView = ContentHost.Children.Count > 0 ? ContentHost.Children[0] : null;
}
PreviousView.Push(CurrentView);
CurrentView = null;
CurrentView = view;
ContentHost.Children.Clear();
ContentHost.Children.Add(CurrentView);
}
