public override PropertyDescriptorCollection GetProperties(Attribute[] attributes)
{
var sourceProperties = base.GetProperties(attributes);
if ((sourceProperties == null) || (sourceProperties.Count == 0))
{
return(sourceProperties);
}
var entry = this.GetEntry();
var replaceProperties = default(Dictionary <PropertyDescriptor, DataItemPropertyDescriptorBase>);
lock ( entry )
{
replaceProperties = entry.Properties;
if (replaceProperties == null)
{
replaceProperties = new Dictionary <PropertyDescriptor, DataItemPropertyDescriptorBase>();
entry.Properties = replaceProperties;
var factory = new DataItemPropertyDescriptorFactory(this);
foreach (var sourceProperty in sourceProperties.Cast <PropertyDescriptor>())
{
var descriptor = factory.CreatePropertyDescriptor(sourceProperty);
if (descriptor != null)
{
replaceProperties.Add(sourceProperty, descriptor);
}
}
}
if (replaceProperties.Count == 0)
{
return(sourceProperties);
}
}
var destinationProperties = new PropertyDescriptor[sourceProperties.Count];
for (int i = 0; i < sourceProperties.Count; i++)
{
var sourceProperty = sourceProperties[i];
DataItemPropertyDescriptorBase destinationProperty;
if (replaceProperties.TryGetValue(sourceProperty, out destinationProperty))
{
destinationProperties[i] = destinationProperty;
}
else
{
destinationProperties[i] = sourceProperty;
}
}
return(new PropertyDescriptorCollection(destinationProperties));
}
internal DataItemPropertyDescriptorBase CreatePropertyDescriptor(PropertyDescriptor source)
{
if (!DataItemPropertyDescriptorFactory.IsReflected(source))
{
return(null);
}
var componentType = source.ComponentType;
PropertyInfo propertyInfo;
try
{
propertyInfo = componentType.GetProperty(source.Name, BindingFlags.Public | BindingFlags.Instance);
if ((propertyInfo == null) || DataItemPropertyDescriptorFactory.IsIndexed(propertyInfo))
{
return(null);
}
}
catch (AmbiguousMatchException)
{
return(null);
}
var propertyType = propertyInfo.PropertyType;
Debug.Assert(propertyType == source.PropertyType);
var creatorHelper = DelegateCreatorHelperFactory.CreateHelper(componentType, propertyType);
var getter = DataItemPropertyDescriptorFactory.CreateGetter(propertyInfo, creatorHelper);
if (getter == null)
{
return(null);
}
var setter = DataItemPropertyDescriptorFactory.CreateSetter(propertyInfo, creatorHelper);
var resetter = DataItemPropertyDescriptorFactory.CreateResetter(componentType, propertyInfo, creatorHelper);
var propertyChangedEvent = this.GetPropertyChangedEvent(propertyInfo.Name);
if (propertyChangedEvent != null)
{
return(new ValueChangeDataItemPropertyDescriptor(m_typeDescriptor, source, componentType, propertyType, getter, setter, resetter, propertyChangedEvent));
}
return(new DataItemPropertyDescriptor(m_typeDescriptor, source, componentType, propertyType, getter, setter, resetter));
}
