/// <inheritdoc />
public override bool Accept(Type targetRootType, Type targetMemberType, Type pastedDataType)
{
var sourceTypeDescriptor = TypeDescriptorFactory.Default.Find(pastedDataType);
var targetTypeDescriptor = TypeDescriptorFactory.Default.Find(targetMemberType);
// Can only paste a collection into another collection, or a dictionary into a dictionary
if (sourceTypeDescriptor.Category == DescriptorCategory.Collection && targetTypeDescriptor.Category != DescriptorCategory.Collection ||
sourceTypeDescriptor.Category == DescriptorCategory.Dictionary && targetTypeDescriptor.Category != DescriptorCategory.Dictionary)
{
return(false);
}
// Special case: KeyValuePair<,>
if (targetTypeDescriptor.Category == DescriptorCategory.Dictionary && sourceTypeDescriptor.Category != DescriptorCategory.Dictionary)
{
// Key and Value types must be compatible
var sourceKeyType = sourceTypeDescriptor.Type.GetMember("Key").OfType <PropertyInfo>().FirstOrDefault()?.PropertyType;
var sourceValueType = sourceTypeDescriptor.Type.GetMember("Value").OfType <PropertyInfo>().FirstOrDefault()?.PropertyType;
return(sourceKeyType != null && TypeConverterHelper.CanConvert(sourceKeyType, ((DictionaryDescriptor)targetTypeDescriptor).KeyType) &&
sourceValueType != null && TypeConverterHelper.CanConvert(sourceValueType, ((DictionaryDescriptor)targetTypeDescriptor).ValueType));
}
// Types must be compatible
var sourceType = TypeDescriptorFactory.Default.Find(pastedDataType).GetInnerCollectionType();
var destinationType = TypeDescriptorFactory.Default.Find(targetMemberType).GetInnerCollectionType();
return(TypeConverterHelper.CanConvert(sourceType, destinationType));
}
internal bool IsEqual(object parentValue, object childValue, bool checkType = false)
{
if (checkType && parentValue != null && parentValue.GetType() != childValue.GetType())
{
if (TypeConverterHelper.CanConvert(childValue.GetType(), parentValue.ToString()))
{
parentValue = Convert.ChangeType(parentValue, childValue.GetType());
}
}
if ((childValue != null && childValue.Equals(parentValue)) || (parentValue == null && childValue == null))
{
return(true);
}
return(false);
}
