public Function(IWeakEvent[] changeTriggers, object target, Func <object, TV> getter)
{
Contract.AllIsNotNull(changeTriggers, target, getter);
_receiver = new EventReceiver(OnTrigger);
foreach (var trig in changeTriggers)
{
trig.AddReceiver(_receiver);
}
_target = new WeakReference(target, false);
_getter = getter;
}
public WrapperCollection(WeakObservableCollection <T> src)
{
_coll = src;
_updater = new EventReceiver <NotifyCollectionChangedEventArgs>(
coll_CollectionChanged);
_propertyUpdater = new EventReceiver <PropertyChangedEventArgs>(
coll_PropertyChanged);
_coll.ContentChanged.AddReceiver(_updater);
_coll.PropertyValueChanged.AddReceiver(_propertyUpdater);
}
public AutoConvertCollection(IReadOnlyCollection <T1> source, Func <T1, T2> converter, bool IsDistinct)
{
Contract.IsNotNull(source);
Contract.IsNotNull(converter);
_converter = converter;
_src = source;
_IsDistinct = IsDistinct;
ReloadAll();
_adder = new EventReceiver <ObjectEventArgs>((x, y) => this.Add((T1)y.Arg));
_remover = new EventReceiver <ObjectEventArgs>((x, y) => this.Remove((T1)y.Arg));
_reset = new EventReceiver((x, y) => this.ReloadAll());
_src.Added.AddReceiver(_adder);
_src.Removed.AddReceiver(_remover);
_src.Reset.AddReceiver(_reset);
}
public UnionCollection(IReadOnlyCollection <T1> source, Expander <T1, T2> expander)
{
Contract.IsNotNull(source);
Contract.IsNotNull(expander);
_expander = expander;
_src = source;
_addSource = new EventReceiver <ObjectEventArgs>((x, y) => this.OnAdd((T1)y.Arg));
_removeSource = new EventReceiver <ObjectEventArgs>((x, y) => OnRemove((T1)y.Arg));
_resetSource = new EventReceiver((x, y) => ReloadAll());
_addItem = new EventReceiver <ObjectEventArgs>((x, y) => this.OnAddItem((T2)y.Arg));
_removeItem = new EventReceiver <ObjectEventArgs>((x, y) => this.OnRemoveItem((T2)y.Arg));
_resetItems = new EventReceiver((x, y) => ResetSource((IReadOnlyCollection <T2>)x));
_src.Added.AddReceiver(_addSource);
_src.Removed.AddReceiver(_removeSource);
_src.Reset.AddReceiver(_resetSource);
_resetSource.Ping();
}
public void test_WrapperCollection()
{
NotifyCollectionChangedAction lastAction = NotifyCollectionChangedAction.Reset;
object lastAdd = null;
object lastRemove = null;
int changeCounter = 0;
EventReceiver onAdd = new EventReceiver((x, y) => lastAdd = ((ObjectEventArgs)y).Arg),
onRemove = new EventReceiver((x, y) => lastRemove = ((ObjectEventArgs)y).Arg),
onChange = new EventReceiver((x, y) => ++changeCounter);
var targetColl = new WeakObservableCollection<string>();
var wcoll = new WrapperCollection<string>(targetColl);
wcoll.Added.AddReceiver(onAdd);
wcoll.Removed.AddReceiver(onRemove);
wcoll.Changed.AddReceiver(onChange);
wcoll.CollectionChanged += (x, y) => { lastAction = y.Action; };
string t1 = "aaa", t2 = "bbb";
CompareWrap(targetColl, wcoll, t1, t2);
Assert.AreEqual(0, changeCounter);
targetColl.Add(t1);
CompareWrap(targetColl, wcoll, t1, t2);
Assert.AreEqual(1, changeCounter);
Assert.AreEqual(t1, lastAdd);
Assert.AreEqual(NotifyCollectionChangedAction.Add, lastAction);
targetColl.Add(t2);
CompareWrap(targetColl, wcoll, t1, t2);
Assert.AreEqual(2, changeCounter);
Assert.AreEqual(t2, lastAdd);
Assert.AreEqual(NotifyCollectionChangedAction.Add, lastAction);
targetColl.Remove(t1);
CompareWrap(targetColl, wcoll, t1, t2);
Assert.AreEqual(3, changeCounter);
Assert.AreEqual(t1, lastRemove);
Assert.AreEqual(NotifyCollectionChangedAction.Remove, lastAction);
Assert.AreEqual(targetColl.Count, wcoll.Count);
}
public sampleListener()
{
_sampleEventReceiver = new EventReceiver(OnSampleEvent);
}
public sampleListener()
{
_sampleEventReceiver = new EventReceiver(OnSampleEvent);
}
private CompoundWeakEvent()
{
_evt = new WeakEvent(this);
trigger = new EventReceiver((x, y) => _evt.Raise(y));
}