/// <summary>
/// Initializes a new instance of the MainViewModel class.
/// </summary>
public MainViewModel()
{
this.AddPlaceholderTabCommand = new RelayCommand(() => this.Tabs.Add(new PlaceholderTab(this)));
PeopleViewModel peopleViewModel = new PeopleViewModel(this);
this.Tabs = new ObservableCollection <TabViewModel>();
this.Tabs.Add(peopleViewModel);
this.Tabs.Add(new PlaceholderTab(this));
this.Tabs.Add(new PlaceholderTab(this));
//if (IsInDesignMode)
//{
// // Code runs in Blend --> create design time data.
//}
//else
//{
// // Code runs "for real"
//}
}
public PersonViewModel(PeopleViewModel peopleViewModel)
{
if (peopleViewModel == null)
{
throw new ArgumentNullException("peopleViewModel");
}
this.PeopleViewModel = peopleViewModel;
React.To(() => this.Age - PeopleViewModel.AverageAge)
.Select(diff =>
{
if (diff > 0)
{
return("above average");
}
else if (diff == 0)
{
return("exact average");
}
else
{
return("below average");
}
})
.SetAndNotify(() => ComparedToAverageAge);
//TODO: SetAndNotify usually has no equality check on the new value.
//Put such logic in SetAndNotify itself.
React.To(() => this.Age - PeopleViewModel.AverageAge)
.Select(diff =>
{
if (diff > 0)
{
return(new RotateTransform(-90.0));
}
else if (diff == 0)
{
return(new RotateTransform(0.0));
}
else
{
return(new RotateTransform(90.0));
}
})
.SetAndNotify(() => ArrowIndicatorRotation);
React.To(() => this.Age - PeopleViewModel.AverageAge)
.Select(diff =>
{
if (diff > 0)
{
return(Brushes.Green);
}
else if (diff == 0)
{
return(Brushes.Blue);
}
else
{
return(Brushes.Red);
}
})
.SetAndNotify(() => ArrowIndicatorColor);
}
