protected virtual void SetDataSource(AsynchronousCollectionBase dataSource)
{
AsynchronousCollectionBase oldDataSource = DataSource;
AsynchronousCollectionBase newDataSource = dataSource;
DataSource = dataSource;
IsDataSourceInitialized = DataSource != null;
if (oldDataSource != null)
{
oldDataSource.LoadingCompleted -= OnDataSourceOnLoadingCompleted;
}
if (newDataSource != null)
{
newDataSource.LoadingCompleted += OnDataSourceOnLoadingCompleted;
if (newDataSource.IsLoadingCompleted)
{
OnDataSourceOnLoadingCompleted(newDataSource, EventArgs.Empty);
}
}
if (IsDataSourceInitialized)
{
if (DataSourceInitialized != null)
{
DataSourceInitialized(this, newDataSource);
}
}
else
{
if (DataSourceUninitialized != null)
{
DataSourceUninitialized(this, oldDataSource);
}
}
}
protected override void SetDataSource(AsynchronousCollectionBase dataSource)
{
if (DataSource != null)
{
((INotifyPropertyChanged)DataSource).PropertyChanged -= OnDataSourcePropertyChanged;
}
base.SetDataSource(dataSource);
if (DataSource != null)
{
((INotifyPropertyChanged)DataSource).PropertyChanged += OnDataSourcePropertyChanged;
}
}
void OnLoadingCompleted(DataSourceManagerBase sender, AsynchronousCollectionBase dataSource)
{
SetIsSettingsEnabled(true);
}
void OnDataSourceUninitialized(DataSourceManagerBase sender, AsynchronousCollectionBase oldDataSource)
{
SetIsSettingsEnabled(false);
}
public Enumerator(AsynchronousCollectionBase owner) : base(owner)
{
}
public EnumeratorBase(AsynchronousCollectionBase owner)
{
this.owner = owner;
this.index = -1;
current = null;
}
void OnLoadingCompleted(DataSourceManagerBase sender, AsynchronousCollectionBase dataSource)
{
EnableGrid();
}
void OnDataSourceManagerDataSourceUninitialized(DataSourceManagerBase sender, AsynchronousCollectionBase oldDataSource)
{
DisableGrid();
}
