public void UnsubscribesFromCollectionChangedEvents()
{
var collection = new ObservableCollection <TestModel>();
var wrapper = new ChangeNotificationWrapper(collection);
wrapper.UnsubscribeFromAllEvents();
bool eventRaised = false;
wrapper.CollectionChanged += (sender, e) => eventRaised = true;
collection.Add(new TestModel());
Assert.IsFalse(eventRaised);
}
public void UnsubscribesFromPropertyChangedEvents()
{
var testModel = new TestModel();
var wrapper = new ChangeNotificationWrapper(testModel);
wrapper.UnsubscribeFromAllEvents();
bool eventRaised = false;
wrapper.PropertyChanged += (sender, e) => eventRaised = true;
testModel.FirstName = "Geert";
Assert.IsFalse(eventRaised);
}
public void UnsubscribesFromCollectionItemPropertyChangedEvents()
{
var testModel = new TestModel();
var collection = new ObservableCollection <TestModel>(new[] { testModel });
var wrapper = new ChangeNotificationWrapper(collection);
wrapper.UnsubscribeFromAllEvents();
bool eventRaised = false;
wrapper.CollectionItemPropertyChanged += (sender, e) => eventRaised = true;
testModel.FirstName = "Geert";
Assert.IsFalse(eventRaised);
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources.
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (_changeNotificationWrapper != null)
{
_changeNotificationWrapper.PropertyChanged -= OnInstancePropertyChanged;
_changeNotificationWrapper.UnsubscribeFromAllEvents();
_changeNotificationWrapper = null;
}
foreach (var weakEventListener in _weakEventListeners)
{
weakEventListener.Detach();
}
_weakEventListeners.Clear();
}
}
private void OnItemsSourceChanged(IEnumerable <IColorLegendItem> oldValue, IEnumerable <IColorLegendItem> newValue)
{
if (_changeNotificationWrapper != null)
{
_changeNotificationWrapper.CollectionItemPropertyChanged -= OnColorProviderPropertyChanged;
_changeNotificationWrapper.UnsubscribeFromAllEvents();
_changeNotificationWrapper = null;
}
SetCurrentValue(FilteredItemsSourceProperty, GetFilteredItems());
SetCurrentValue(FilteredItemsIdsProperty, FilteredItemsSource?.Select(cp => cp.Id));
if (newValue != null)
{
_changeNotificationWrapper = new ChangeNotificationWrapper(newValue);
_changeNotificationWrapper.CollectionItemPropertyChanged += OnColorProviderPropertyChanged;
}
UpdateIsAllVisible();
}
private void OnItemsSourceChanged(IEnumerable <IColorProvider> oldValue, IEnumerable <IColorProvider> newValue)
{
if (_changeNotificationWrapper != null)
{
_changeNotificationWrapper.CollectionItemPropertyChanged -= OnColorProviderPropertyChanged;
_changeNotificationWrapper.UnsubscribeFromAllEvents();
_changeNotificationWrapper = null;
}
FilteredItemsSource = GetFilteredItems();
FilteredItemsIds = FilteredItemsSource == null ? null : FilteredItemsSource.Select(cp => cp.Id);
if (newValue != null)
{
_changeNotificationWrapper = new ChangeNotificationWrapper(newValue);
_changeNotificationWrapper.CollectionItemPropertyChanged += OnColorProviderPropertyChanged;
}
UpdateIsAllVisible();
}