protected void Unbind(DataSourceReference dataSourceReference)
{
var idx = bindings.FindIndex(x => x.DataSourceReference == dataSourceReference);
if (idx == -1)
{
return;
}
Unbind(idx, true);
}
protected void Bind(DataSourceReference dataSourceReference, EventHandler handler, Action unbindCallback = null)
{
if (dataSourceReference?.Source == null)
{
return;
}
bindings.Add(new Entry
{
DataSourceReference = dataSourceReference,
Handler = handler,
UnbindCallback = unbindCallback
});
dataSourceReference.Source.Changed += handler;
handler?.Invoke(this, EventArgs.Empty);
}
protected void BindCollection(DataSourceReference dataSourceReference, EventHandler <CollectionChangedEventArgs> handler, Action unbindCallback = null)
{
if (!(dataSourceReference?.Source is IDataSourceList dataSourceList))
{
return;
}
bindings.Add(new Entry
{
DataSourceReference = dataSourceReference,
CollectionHandler = handler,
UnbindCallback = unbindCallback
});
dataSourceList.CollectionChanged += handler;
var i = 0;
foreach (var item in dataSourceList)
{
handler.Invoke(dataSourceList, CollectionChangedEventArgs.ItemAdded(item, i++));
}
}