public void MonitorSelectedItems(MonitorSelectedItemsMode mode)
{
var initialItems = Enumerable.Range(1, 10)
.Select(i => new SelectableItem(i))
.ToArray();
//result should only be true when all items are set to true
using (var sourceList = new SourceList <SelectableItem>())
using (var sut = new MonitorSelectedItems(sourceList, mode))
{
sourceList.AddRange(initialItems);
sut.HasSelection.Should().Be(false);
sut.SelectedMessage.Should().Be("Nothing Selected");
initialItems[0].IsSelected = true;
sut.HasSelection.Should().Be(true);
sut.SelectedMessage.Should().Be("1 item selected");
initialItems[1].IsSelected = true;
sut.HasSelection.Should().Be(true);
sut.SelectedMessage.Should().Be("2 items selected");
//remove the selected items
sourceList.RemoveRange(0, 2);
sut.HasSelection.Should().Be(false);
sut.SelectedMessage.Should().Be("Nothing Selected");
}
}
public MonitorSelectedItems(ISourceList <SelectableItem> source, MonitorSelectedItemsMode mode)
{
_source = source;
//both methods produce the same result. However, UsingEntireCollection() enables producing values of selected and not-selected items
_cleanUp = mode == MonitorSelectedItemsMode.UsingFilterOnProperty
? UseFilterOnProperty()
: UseEntireCollection();
}
