internal static ChangeArgs ItemsAdded(
IVMCollection collection,
IEnumerable <IViewModel> newItems,
IChangeReason reason = null
)
{
Check.NotNull(collection, nameof(collection));
Check.NotNull(newItems, nameof(newItems));
Check.NotEmpty(newItems, nameof(newItems));
return(new ChangeArgs(
ChangeType.AddedToCollection,
ValueStage.ValidatedValue,
Path.Empty.Append(collection),
newItems: newItems,
reason: reason
));
}
internal static ChangeArgs CollectionPopulated(
IVMCollection collection,
IEnumerable <IViewModel> oldItems,
IChangeReason reason = null
)
{
Check.NotNull(collection, nameof(collection));
var newItems = (IEnumerable <IViewModel>)collection;
return(new ChangeArgs(
ChangeType.CollectionPopulated,
ValueStage.ValidatedValue,
Path.Empty.Append(collection),
newItems: newItems,
oldItems: oldItems,
reason: reason
));
}
private void Repopulate(IBehaviorContext context, IVMCollection <TItemVM> collection, IChangeReason reason)
{
var sourceItems = GetSourceItems(context);
IEnumerable <TItemVM> newItems = sourceItems
.Select(s => CreateAndInitializeItem(context, s));
collection.ReplaceItems(newItems, reason);
}
public virtual void ReplaceItems(IEnumerable <TItemVM> newItems, IChangeReason reason)
{
Clear();
newItems.ForEach(Add);
}
public override void ReplaceItems(IEnumerable <ItemVM> newItems, IChangeReason reason)
{
_log.Append(ReplaceItemsLog);
base.ReplaceItems(newItems, reason);
}
internal static ChangeArgs PropertyChanged(IVMPropertyDescriptor property, ValueStage stage, IChangeReason reason = null)
{
Check.NotNull(property, nameof(property));
return(new ChangeArgs(
ChangeType.PropertyChanged,
stage,
Path.Empty.Append(property),
reason: reason
)
{
ChangedProperty = property
}); // TODO: Remove
}
private void Repopulate(IBehaviorContext context, IVMCollection <TItemVM> collection, IChangeReason reason)
{
var sourceItems = this.GetValueNext <IEnumerable <TItemSource> >(context);
var items = sourceItems
.Select(sourceItem => GetItemVM(context, sourceItem));
collection.ReplaceItems(items, reason);
}
