/// <summary>
/// Injects the page.ContentViewModel into the
/// ShellViewModel, publishing event messages
/// along the way.
/// </summary>
public bool NavigateTo(IPage targetPage)
{
var navWasSuccessful = false;
//PUBLISH THE REQUEST EVENT MESSAGE
var navId = Guid.NewGuid();
var navInfo = new NavigationInfo(navId, targetPage);
NavigationRequestedEventMessage.Publish(navInfo);
//PUBLISH THE NAVIGATING EVENT MESSAGE
NavigatingEventMessage.Publish(navInfo);
try
{
//INJECT THE PAGE VIEWMODEL INTO THE SHELL
var shellVM = GetShellViewModel();
shellVM.Main = targetPage.ContentViewModel;
//PUBLISH THE NAVIGATED EVENT MESSAGE
NavigatedEventMessage.Publish(navInfo);
//ADD THE PAGE TO THE HISTORY
PageHistory.Add(targetPage);
//SET THE RETURN VARIABLE
navWasSuccessful = true;
}
catch
{
//PUBLISH THE FAILED EVENT MESSAGE
NavigationFailedEventMessage.Publish(navInfo);
//SET THE RETURN VARIABLE
navWasSuccessful = false;
}
//RETURN OUR SUCCESS
return(navWasSuccessful);
}
public void Handle(NavigationFailedEventMessage message)
{
NavPanelIsEnabled = true;
}
