public EntryFieldExpandedMessage(EntryFieldViewModel item)
{
if (item == null)
throw new ArgumentNullException("item");
_item = item;
}
public EntryFieldExpandedMessage(EntryFieldViewModel item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
_item = item;
}
public void Should_update_IsExpanded_state_of_items()
{
var parent = new Screen();
var events = new EventAggregator();
ScreenExtensions.TryActivate(parent);
var item1 = new EntryFieldViewModel(parent, events);
var item2 = new EntryFieldViewModel(parent, events);
ViewModel.Items.Add(item1);
ViewModel.Items.Add(item2);
item1.Expand();
ViewModel.Handle(new EntryFieldExpandedMessage(item1));
Assert.True(item1.IsExpanded);
Assert.False(item2.IsExpanded);
item2.Expand();
ViewModel.Handle(new EntryFieldExpandedMessage(item2));
Assert.False(item1.IsExpanded);
Assert.True(item2.IsExpanded);
}