public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (Authenticator.Current == null)
{
return(value);
}
if (parameter == null)
{
parameter = this.PropertyName;
}
if (value != null && parameter is string propertyName)
{
if (value is IDomainUserDescriptor descriptor)
{
if (propertyName == IsOnline)
{
return(DomainUserDescriptorUtility.IsOnline(Authenticator.Current, descriptor));
}
else if (propertyName == HasChanges)
{
return(DomainUserDescriptorUtility.HasChanges(Authenticator.Current, descriptor));
}
else if (propertyName == IsOwner)
{
return(DomainUserDescriptorUtility.IsOwner(Authenticator.Current, descriptor));
}
else if (propertyName == CanWrite)
{
return(DomainUserDescriptorUtility.CanWrite(Authenticator.Current, descriptor));
}
else if (propertyName == CanRead)
{
return(DomainUserDescriptorUtility.CanRead(Authenticator.Current, descriptor));
}
}
else
{
var prop = value.GetType().GetProperty(propertyName);
if (prop != null)
{
return(prop.GetValue(value));
}
}
}
return(value);
}
public static bool CanSendMessage(Authentication authentication, IDomainUserDescriptor descriptor)
{
if (authentication == null)
{
throw new ArgumentNullException(nameof(authentication));
}
if (descriptor == null)
{
throw new ArgumentNullException(nameof(descriptor));
}
if (DomainUserDescriptorUtility.IsOnline(authentication, descriptor) == false)
{
return(false);
}
return(authentication.ID != descriptor.DomainUserInfo.UserID);
}