/// <summary>
/// Raises the <see cref="VectorChanged"/> event.
/// </summary>
public virtual void RaiseVectorChanged(IVectorChangedEventArgs e)
{
if (_updating <= 0)
{
VectorChanged?.Invoke(this, e);
OnPropertyChanged("Count");
}
}
public new object this[int index]
{
get
{
Debug.WriteLine("ObservableVector.Index {0}", index);
T value;
if (!_cache.TryGetValue(_previousIndex = index, out value))
{
Task.Run((Func <Task>)(async() =>
{
Debug.WriteLine("ObservableVector.StartLoadAsync {0}", index);
if (_chunks.Contains(index))
{
_chunks.Push(index);
}
if (Busy)
{
return;
}
try
{
var i = (_chunks.Any()) ? _chunks.Pop() : index;
if (Math.Abs(i - _previousIndex) >= _cacheLimit)
{
return;
}
Busy = true;
var items = await Provider.LoadAsync((uint)i, _takeSize);
foreach (var item in items)
{
if (_cache.ContainsKey(item.Key))
{
_cache[item.Key] = item.Value;
}
else
{
_cache.Add(item.Key, item.Value);
}
base.Add((T)item.Value);
var current = (uint)IndexOf(item.Value);
VectorChanged?.Invoke(this, new VectorChangedEventArgs {
CollectionChange = CollectionChange.ItemInserted, Index = current
});
}
}
catch { Debugger.Break(); }
finally { Busy = false; }
}));
}
return(value);
}
set { throw new NotImplementedException(); }
}
/// <summary>
/// Vector changed event
/// </summary>
/// <param name="e">event args</param>
protected virtual void OnVectorChanged(IVectorChangedEventArgs e)
{
if (_deferCounter > 0)
{
return;
}
VectorChanged?.Invoke(this, e);
// ReSharper disable once ExplicitCallerInfoArgument
OnPropertyChanged(nameof(Count));
}
void RaiseChanged(bool count, bool items, CollectionChange change, uint index)
{
if (count)
{
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Count)));
}
if (items)
{
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Items)));
}
VectorChanged?.Invoke(this, new VectorChangedEventArgs {
CollectionChange = change, Index = index
});
}
private void Slider_ValueChanged(object sender, RoutedPropertyChangedEventArgs <double> e)
{
switch ((sender as Slider).Name)
{
case "X":
Vector.X = e.NewValue;
break;
case "Y":
Vector.Y = e.NewValue;
break;
case "Z":
Vector.Z = e.NewValue;
break;
default: throw new Exception($"Invalid Slider Name: {(sender as Slider).Name}");
}
Label.Content = (Name != null ? $"{Name}: " : "") + $"X={SliderX.Value}, Y={SliderY.Value}, Z={SliderZ.Value}";
VectorChanged?.Invoke(this, Vector);
}
private void DoCollectionChanged(CollectionChangedEventArgs e)
{
revision++;
VectorChanged?.Invoke(this, e);
}
private void OnSourceCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
VectorChanged?.Invoke(this as IObservableVector <object>, e.ToVectorChangedEventArgs());
}
private void RaiseVectorChanged(CollectionChange change, int index)
{
VectorChanged?.Invoke(this, new VectorChangedEventArgs(change, (uint)index));
UntypedVectorChanged?.Invoke(this, new VectorChangedEventArgs(change, (uint)index));
}
private void userList_VectorChanged(IBindableObservableVector vector, object e)
{
VectorChanged?.Invoke(this, e);
OnPropertyChanged(nameof(Count));
}
protected void OnVectorChanged(ChangedArgs e) => VectorChanged?.Invoke(this, e);
private void OnVectorChanged()
{
VectorChanged?.Invoke(null, null);
}
private void OnVectorChanged(IObservableVector <T> sender, IVectorChangedEventArgs @event)
{
VectorChanged?.Invoke(this, @event);
}
public void RaiseVectorChanged(IVectorChangedEventArgs args)
{
VectorChanged?.Invoke(this, args);
}
