/// <summary>
/// Pushes a navigation page onto the modal stack.
/// </summary>
/// <param name="modal">A page view model.</param>
/// <param name="contract">A page contract.</param>
/// <returns>An observable that signals the completion of this action.</returns>
public IObservable <Unit> PushModal(INavigationPageViewModel modal, string contract = null)
{
if (modal == null)
{
throw new NullReferenceException("The modal you tried to insert is null.");
}
if (modal.PageStack.Value.Count <= 0)
{
throw new InvalidOperationException("Can't push an empty navigation page.");
}
return(_viewShell
.PushModal(modal.PageStack.Value[0], contract, true)
.Do(
_ =>
{
AddToStackAndTick(_modalPageStack, modal, false);
}));
}
public IObservable <Unit> PushModal(INavigationPageViewModel modal, string contract = null)
{
if (modal == null)
{
throw new NullReferenceException("The modal you tried to insert is null.");
}
if (modal.PageStack.Value.Count <= 0)
{
throw new InvalidOperationException("Can't push an empty navigation page.");
}
return
(View
.PushModal(modal.PageStack.Value[0], contract, true)
.Do(
_ =>
{
AddToStackAndTick(_ModalPageStack, modal, false);
this.Log().Debug("Added modal '{0}' (contract '{1}') to stack.", modal.Title, contract);
}));
}
