public CViewManagerBinder_New
(
PSAccessServiceInterface propStoreAccessService,
IViewManagerProviderKey viewManagerProviderKey,
CrudWithMappingCreator <TDal, TSource, TDestination> crudWithMappingCreator,
CViewProviderCreator viewBuilder // Method that can be used to create a IProvideAView from a DataSourceProvider.
)
{
ViewManagerProviderKey = viewManagerProviderKey;
//_propBagMapperCreator = propBagMapperCreator;
_crudWithMappingCreator = crudWithMappingCreator;
_viewBuilder = viewBuilder;
// Create a instance of our nested, internal class that reponds to Updates to the property store Nodes.
IReceivePropStoreNodeUpdates_PropBag <TDal> propStoreNodeUpdateReceiver = new PropStoreNodeUpdateReceiver(this);
// Create a new watcher, the bindingInfo specifies the PropItem for which to listen to changes,
// the propStoreNodeUpdateReceiver will be notfied when changes occur.
_localWatcher = new LocalWatcher <TDal>(propStoreAccessService, ViewManagerProviderKey.BindingInfo, propStoreNodeUpdateReceiver);
//var x = _propItemParent_wr;
//var y = _propItemParent_wr.TryGetTarget(out IPropBag target);
//var z = target;
}
//Lazy<IValueConverter> _defaultConverter;
//public virtual Lazy<IValueConverter> DefaultConverter
//{
// get
// {
// if(_defaultConverter == null)
// {
// return new Lazy<IValueConverter>(() => new PropValueConverter());
// }
// return _defaultConverter;
// }
// set
// {
// _defaultConverter = value;
// }
//}
//Func<BindingTarget, MyBindingInfo, Type, string, object> _defConvParamBuilder;
//public virtual Func<BindingTarget, MyBindingInfo, Type, string, object> DefaultConverterParameterBuilder
//{
// get
// {
// if (_defConvParamBuilder == null)
// {
// return OurDefaultConverterParameterBuilder;
// }
// return _defConvParamBuilder;
// }
// set
// {
// _defConvParamBuilder = value;
// }
//}
#endregion
#region Constructor
public LocalBinder(PSAccessServiceInterface propStoreAccessService, ExKeyT bindingTarget, LocalBindingInfo bindingInfo)
{
_bindingTarget = bindingTarget;
_bindingInfo = bindingInfo;
// Get the PropStore Node for the IPropBag object hosting the property that is the target of the binding.
BagNode ourNode = GetPropBagNode(propStoreAccessService);
// Get a weak reference to the PropBag hosting the target property.
_targetObject = ourNode.PropBagProxy;
// Get the name of the target property from the PropId given to us.
if (_targetObject.TryGetTarget(out IPropBag propBag))
{
PropIdType propId = _bindingTarget.Level2Key;
_propertyName = GetPropertyName(propStoreAccessService, propBag, propId, out PropStorageStrategyEnum storageStrategy);
if (storageStrategy == PropStorageStrategyEnum.External)
{
throw new InvalidOperationException($"{storageStrategy} is not a supported Prop Storage Strategy when used as a target of a local binding.");
}
// We will update the target property depending on how that PropItem stores its value.
_targetStorageStrategy = storageStrategy;
// Create a instance of our nested, internal class that reponds to Updates to the property store Nodes.
IReceivePropStoreNodeUpdates_PropNode <T> propStoreNodeUpdateReceiver = new PropStoreNodeUpdateReceiver(this);
// Create a new watcher, the bindingInfo specifies the PropItem for which to listen to changes,
// the propStoreNodeUpdateReceiver will be notfied when changes occur.
_localWatcher = new LocalWatcher <T>(propStoreAccessService, bindingInfo, propStoreNodeUpdateReceiver);
}
else
{
// TODO: consider creating a TryCreateLocalBinding to avoid this situation.
System.Diagnostics.Debug.WriteLine("The target was found to have been Garbage Collected when creating a Local Binding.");
}
}
