private void DoUpdate(ISortedChangeSet <TObject, TKey> updates, IObservableCollection <TObject> list)
{
foreach (var update in updates)
{
switch (update.Reason)
{
case ChangeReason.Add:
list.Insert(update.CurrentIndex, update.Current);
break;
case ChangeReason.Remove:
list.RemoveAt(update.CurrentIndex);
break;
case ChangeReason.Moved:
list.Move(update.PreviousIndex, update.CurrentIndex);
break;
case ChangeReason.Update:
if (update.PreviousIndex != update.CurrentIndex)
{
list.RemoveAt(update.PreviousIndex);
list.Insert(update.CurrentIndex, update.Current);
}
else
{
list.Replace(update.Previous.Value, update.Current);
}
break;
}
}
}
public void ReplaceWithRange(T from, T to)
{
var iFrom = _allItems.IndexOf(from);
var iTo = _allItems.IndexOf(to);
if (iFrom < 0 || iTo < 0)
{
return; //normally unreachable code
}
if (iFrom > iTo)
{
var tmp = iFrom;
iFrom = iTo;
iTo = tmp;
}
_selectedItems.Replace(
_allItems.Skip(iFrom).Take(iTo - iFrom + 1));
}
public void Replace()
{
//NB: the following is a replace bcause the hash code of user is calculated from the user name
var person = new Person("Adult1", 50);
var replaced = new Person("Adult1", 50);
_collection.Add(person);
_collection.Replace(person, replaced);
Assert.AreEqual(2, _results.Messages.Count, "Should be 1 updates");
Assert.AreEqual(1, _results.Data.Count, "Should be 1 item in the cache");
Assert.AreEqual(1, _results.Messages.First().Adds, "First message should be an add");
Assert.AreEqual(1, _results.Messages.Skip(1).First().Updates, "First message should be an update");
}
public MasterDetailsProgram(ISomeService someService)
{
_fetchData = new RemoteActionsCallerForm(x => {
x.Add(someService.FetchHeaders, y => _headerItems.Replace(y));
x.Add(someService.FetchDetails, y => _detailItems.Replace(y));
});
_headers = new HeadersForm();
_details = new DetailsForm();
_headerItems.Changed += (_, __, ___) => {
_headers.Headers.Items.Replace(_headerItems);
};
_layoutChoice = new EnumChoiceForm <LayoutChoice>(
"Choose screen layout", true, LayoutChoice.Horizontal, x => x.ToString(),
x => x.Choice.Widget.ClassList.Add("horizontalOrVerticalChoice"));
}
public static void Replace <T>(this IObservableCollection <T> self, IEnumerable <T> items)
{
self.Replace(items.ToArray());
}