public void Indexer_Setter_Exception_IndexIsEqualToCount()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
Assert.ThrowsException<ArgumentOutOfRangeException>(() => list[20] = 100);
}
/// <summary>
/// Refreshes the view model.
/// </summary>
/// <returns>A task tracking the operation.</returns>
public override Task Refresh()
{
subscription?.Dispose();
var dispose = new CompositeDisposable();
var itemSource = CreateItemSource();
var items = new VirtualizingList <IIssueListItemViewModelBase>(itemSource, null);
var view = new VirtualizingListCollectionView <IIssueListItemViewModelBase>(items);
view.Filter = FilterItem;
Items = items;
ItemsView = view;
dispose.Add(itemSource);
dispose.Add(
Observable.CombineLatest(
itemSource.WhenAnyValue(x => x.IsLoading),
view.WhenAnyValue(x => x.Count),
this.WhenAnyValue(x => x.SearchQuery),
this.WhenAnyValue(x => x.SelectedState),
this.WhenAnyValue(x => x.AuthorFilter.Selected),
(loading, count, _, __, ___) => Tuple.Create(loading, count))
.Subscribe(x => UpdateState(x.Item1, x.Item2)));
subscription = dispose;
return(Task.CompletedTask);
}
public void Indexer_SettingAndGettingReturnsSameElement()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
list[10] = 42;
Assert.AreEqual(42, list[10]);
}
public void Indexer_Getter_ReturnsPlaceholderFarAfterSetElement()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(2000);
list[10] = 42;
Assert.AreEqual(0, list[1990]);
}
/// <summary>
/// Constructor for the rCAD BioEntity
/// </summary>
/// <param name="dc">Linq2Sql DataContext</param>
/// <param name="seqid">Sequence ID (key)</param>
/// <param name="alignmentid">Alignment ID (key)</param>
/// <param name="length">Total length in bytes of the sequence</param>
public DbAlignedBioEntity(rcadDataContext dc, string connectionString, int seqid, int alignmentid, int length)
{
// Create a virtualized list of the data
_bioList = new VirtualizingList <IBioSymbol>(
new DbAlignmentProvider(dc, connectionString, seqid, alignmentid, length),
Math.Min(512, length), 60);
// Determine the first column with valid data
//KJD (10/21/2009) - Change query to use vAlignmentGridUngapped which takes into account column indirection supported by the rCAD schema
//instead of querying the Sequence table directly
FirstDataColumn = dc.vAlignmentGridUngappeds.Where(s => ((s.SeqID == seqid) && (s.AlnID == alignmentid))).Min(s => s.LogicalColumnNumber) - 1;
}
private VirtualizingList <MessageModel> InvokeLoadMsg()
{
var watcher = new Stopwatch();
watcher.Start();
//邮件总数
var count = DbOperator.GetMessageCount(_dbHelper);
//获取邮件
var mailProvider = new MessageProvider(count, 1000)
{
DbHelper = _dbHelper
};
var list = new VirtualizingList <MessageModel>(mailProvider, 100, 1000);
watcher.Stop();
TotalTime = watcher.ElapsedMilliseconds.ToString(CultureInfo.InvariantCulture);
return(list);
}
/// <summary>
/// Refreshes the view model.
/// </summary>
/// <returns>A task tracking the operation.</returns>
public override Task Refresh()
{
if (RemoteRepository == null)
{
// If an exception occurred reading the parent repository, do nothing.
return(Task.CompletedTask);
}
subscription?.Dispose();
var dispose = new CompositeDisposable();
var itemSource = CreateItemSource();
var items = new VirtualizingList <IIssueListItemViewModelBase>(itemSource, null);
var view = new VirtualizingListCollectionView <IIssueListItemViewModelBase>(items);
view.Filter = FilterItem;
Items = items;
ItemsView = view;
Error = null;
dispose.Add(itemSource);
dispose.Add(
Observable.CombineLatest(
itemSource.WhenAnyValue(x => x.IsLoading),
view.WhenAnyValue(x => x.Count),
this.WhenAnyValue(x => x.SearchQuery),
this.WhenAnyValue(x => x.SelectedState),
this.WhenAnyValue(x => x.AuthorFilter.Selected),
(loading, count, _, __, ___) => Tuple.Create(loading, count))
.ObserveOn(RxApp.MainThreadScheduler)
.Subscribe(x => UpdateState(x.Item1, x.Item2)));
dispose.Add(
Observable.FromEventPattern <ErrorEventArgs>(
x => items.InitializationError += x,
x => items.InitializationError -= x)
.Subscribe(x => Error = x.EventArgs.GetException()));
subscription = dispose;
return(Task.CompletedTask);
}
public void IsReadOnly_IsFalse()
{
VirtualizingList<int> list = new VirtualizingList<int>();
Assert.AreEqual(false, list.IsReadOnly);
}
public void GetEnumerator_NonGeneric_EnumeratesArray()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
list[2] = 8;
list[10] = 42;
List<int> result = new List<int>();
IEnumerator enumerator = ((IEnumerable)list).GetEnumerator();
while (enumerator.MoveNext())
result.Add((int)enumerator.Current);
CollectionAssert.AreEqual(new int[] { 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, result);
}
public void Add_AddsNewItemToList()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
list.Add(123);
Assert.AreEqual(21, list.Count);
Assert.AreEqual(123, list[20]);
}
public void UpdateCount_UpdatesCountProperty()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
Assert.AreEqual(20, list.Count);
}
public void UpdateCount_Exception_CountIsLessThanZero()
{
VirtualizingList<int> list = new VirtualizingList<int>();
Assert.ThrowsException<ArgumentOutOfRangeException>(() => list.UpdateCount(-1));
}
public void CopyTo_CopiesToDestinationArray()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
list[2] = 8;
list[10] = 42;
int[] destination = new int[25];
destination[1] = 1;
destination[5] = 2;
destination[22] = 3;
list.CopyTo(destination, 2);
CollectionAssert.AreEqual(new int[] { 0, 1, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0 }, destination);
}
public void RemoveAt_Exception_IndexIsEqualToCount()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
Assert.ThrowsException<ArgumentOutOfRangeException>(() => list.RemoveAt(20));
}
public void Clear_ClearsTheList()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
list.Clear();
Assert.AreEqual(0, list.Count);
}
public void Remove_ReturnsFalseForItemNotInList()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
list[2] = 8;
list[5] = 10;
list[10] = 42;
bool result = list.Remove(12);
Assert.AreEqual(false, result);
}
public void Contains_ReturnsTrueIfItemInList()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
list[2] = 8;
list[10] = 42;
bool result = list.Contains(42);
Assert.AreEqual(true, result);
}
public void Insert_Exception_IndexIsGreaterThanCount()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
Assert.ThrowsException<ArgumentOutOfRangeException>(() => list.Insert(21, 123));
}
public void IndexOf_ReturnsMinusOneIfNotInList()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
list[2] = 8;
list[10] = 42;
int result = list.IndexOf(15);
Assert.AreEqual(-1, result);
}
public void IndexOf_ReturnsIndexOfItemInList()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
list[2] = 8;
list[10] = 42;
int result = list.IndexOf(42);
Assert.AreEqual(10, result);
}
public void Constructor_Void_CollectionIsEmpty()
{
VirtualizingList<int> list = new VirtualizingList<int>();
Assert.AreEqual(0, list.Count);
}
public void Indexer_Getter_Exception_IndexIsLessThanZero()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
Assert.ThrowsException<ArgumentOutOfRangeException>(() => list[-1]);
}
public void RemoveAt_RemovesItemFromList()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
list[2] = 8;
list[5] = 10;
list[10] = 42;
list.RemoveAt(5);
Assert.AreEqual(19, list.Count);
Assert.AreEqual(8, list[2]);
Assert.AreEqual(42, list[9]);
}
public void Insert_InsertsItemIntoList()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
list[2] = 8;
list[10] = 42;
list.Insert(5, 123);
Assert.AreEqual(21, list.Count);
Assert.AreEqual(8, list[2]);
Assert.AreEqual(123, list[5]);
Assert.AreEqual(42, list[11]);
}
public void Contains_ReturnsFalseIfNotInList()
{
VirtualizingList<int> list = new VirtualizingList<int>();
list.UpdateCount(20);
list[2] = 8;
list[10] = 42;
bool result = list.Contains(15);
Assert.AreEqual(false, result);
}
