/// <summary>
/// Aplica o filtro sobre a coleção.
/// </summary>
/// <typeparam name="T">Tipo que é armazenado na coleção.</typeparam>
/// <param name="collection">Coleção que será filtrada.</param>
/// <param name="filter">Predicato que será utilizado.</param>
public static Collections.FilteredObservableCollection <T> ApplyFilter <T>(this Collections.IObservableCollection <T> collection, Predicate <T> filter)
{
if (collection == null)
{
return(null);
}
return(new Collections.FilteredObservableCollection <T>(collection, filter));
}
/// <summary>
/// Cria um indice do tipo hash para a coleção.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <typeparam name="PropertyType"></typeparam>
/// <param name="collection"></param>
/// <param name="property"></param>
public static void CreateHashIndex <T, PropertyType>(this Collections.IObservableCollection <T> collection, System.Linq.Expressions.Expression <Func <T, PropertyType> > property)
{
var indexedCollection = collection as Collections.IIndexedObservableCollection <T>;
if (indexedCollection == null)
{
return;
}
indexedCollection.CreateIndex <PropertyType>(property, Collections.ObservableCollectionIndexType.Hash);
}
/// <summary>
/// Cria uma coleção ordena.
/// </summary>
/// <param name="source">Coleção de origem dos dados.</param>
/// <param name="properties">Propriedade que serão utilizadas na ordenação.</param>
/// <returns></returns>
public static Collections.IObservableCollection OrderByObservableCollection(this Collections.IObservableCollection source, params string[] properties)
{
source.Require("source").NotNull();
properties.Require("properties").NotNull().NotEmptyCollection();
var type = source.GetType().FindInterfaces((t, m) => t.IsGenericType && typeof(Collections.IObservableCollection <>).IsAssignableFrom(t.GetGenericTypeDefinition()), null).Select(f => f.GetGenericArguments().FirstOrDefault()).FirstOrDefault();
if (type == null)
{
throw new InvalidOperationException("Invalid source");
}
var comparer = typeof(PropertiesComparer <>).MakeGenericType(type).GetConstructor(new Type[] {
typeof(string[])
}).Invoke(new object[] {
properties
});
return((Collections.IObservableCollection)Activator.CreateInstance(typeof(Collections.SortableObservableCollection <>).MakeGenericType(type), source, comparer));
}
/// <summary>
/// Faz o cast da coleção informada para a coleção do tipo TDestination.
/// </summary>
/// <typeparam name="TDestination"></typeparam>
/// <param name="source"></param>
/// <returns></returns>
public static Collections.IObservableCollection <TDestination> CastObservableCollection <TDestination>(this Collections.IObservableCollection source)
{
if (source == null)
{
return(null);
}
return(new Collections.ObservableCollectionWrapper <TDestination>(source));
}
public static Collections.IObservableCollection <T> OrderByObservableCollection <T>(this Collections.IObservableCollection <T> source, params System.Linq.Expressions.Expression <Func <T, object> >[] properties)
{
source.Require("source").NotNull();
properties.Require("properties").NotNull().NotEmptyCollection();
return(new Collections.SortableObservableCollection <T>(source, new PropertiesComparer <T>(properties)));
}
/// <summary>
/// Construtor para lista com items personalizados.
/// </summary>
/// <param name="controller"></param>
/// <param name="items"></param>
/// <param name="selected"></param>
/// <param name="itemCreator"></param>
public EntitySelectionList(Colosoft.Business.IEntity controller, Collections.IObservableCollection <TBusiness> items, Collections.IObservableCollection <TBusiness> selected, Func <Colosoft.Business.IEntity, TBusiness, Collections.IObservableCollection <TBusiness>, Item> itemCreator) : base(items, e => itemCreator(controller, e, selected))
{
_selected = selected;
}
