private IEnumerable <ActivityPropertyDescriptor> DescribeProperties(Type activityType)
{
var properties = activityType.GetProperties();
foreach (var propertyInfo in properties)
{
var activityPropertyAttribute = propertyInfo.GetCustomAttribute <ActivityPropertyAttribute>();
if (activityPropertyAttribute == null)
{
continue;
}
yield return(new ActivityPropertyDescriptor
(
(activityPropertyAttribute.Name ?? propertyInfo.Name).Pascalize(),
propertyInfo.PropertyType,
_uiHintResolver.GetUIHint(propertyInfo),
activityPropertyAttribute.Label ?? propertyInfo.Name.Humanize(LetterCasing.Title),
activityPropertyAttribute.Hint,
_optionsResolver.GetOptions(propertyInfo),
activityPropertyAttribute.Category,
_defaultValueResolver.GetDefaultValue(propertyInfo),
activityPropertyAttribute.DefaultSyntax,
activityPropertyAttribute.SupportedSyntaxes
));
}
}
private IEnumerable <ActivityInputDescriptor> DescribeInputProperties(IEnumerable <PropertyInfo> properties)
{
foreach (var propertyInfo in properties)
{
var activityPropertyAttribute = propertyInfo.GetCustomAttribute <ActivityInputAttribute>();
if (activityPropertyAttribute == null)
{
continue;
}
yield return(new ActivityInputDescriptor
(
activityPropertyAttribute.Name ?? propertyInfo.Name,
propertyInfo.PropertyType,
_uiHintResolver.GetUIHint(propertyInfo),
activityPropertyAttribute.Label ?? propertyInfo.Name.Humanize(LetterCasing.Title),
activityPropertyAttribute.Hint,
_optionsResolver.GetOptions(propertyInfo),
activityPropertyAttribute.Category,
activityPropertyAttribute.Order,
_defaultValueResolver.GetDefaultValue(propertyInfo),
activityPropertyAttribute.DefaultSyntax,
activityPropertyAttribute.SupportedSyntaxes,
activityPropertyAttribute.IsReadOnly ?? false,
activityPropertyAttribute.IsBrowsable ?? true,
activityPropertyAttribute.IsDesignerCritical,
activityPropertyAttribute.DefaultWorkflowStorageProvider,
activityPropertyAttribute.DisableWorkflowProviderSelection
));
}
}
private IEnumerable <ActivityInputDescriptor> DescribeInputProperties(IEnumerable <PropertyInfo> properties, string category = null)
{
foreach (var propertyInfo in properties)
{
var activityPropertyObjectAttribute = propertyInfo.GetCustomAttribute <ActivityInputObjectAttribute>();
if (activityPropertyObjectAttribute != null)
{
var objectProperties = propertyInfo.PropertyType.GetProperties();
var nestedInputProperties = DescribeInputProperties(objectProperties, activityPropertyObjectAttribute?.Category);
foreach (var property in nestedInputProperties)
{
property.Name = $"{propertyInfo.Name}_{property.Name}";
yield return(property);
}
continue;
}
var activityPropertyAttribute = propertyInfo.GetCustomAttribute <ActivityInputAttribute>();
if (activityPropertyAttribute == null)
{
continue;
}
yield return(new ActivityInputDescriptor
(
activityPropertyAttribute.Name ?? propertyInfo.Name,
propertyInfo.PropertyType,
_uiHintResolver.GetUIHint(propertyInfo),
activityPropertyAttribute.Label ?? propertyInfo.Name.Humanize(LetterCasing.Title),
activityPropertyAttribute.Hint,
_optionsResolver.GetOptions(propertyInfo),
activityPropertyAttribute.Category ?? category,
activityPropertyAttribute.Order,
_defaultValueResolver.GetDefaultValue(propertyInfo),
activityPropertyAttribute.DefaultSyntax,
activityPropertyAttribute.SupportedSyntaxes,
activityPropertyAttribute.IsReadOnly,
activityPropertyAttribute.IsBrowsable,
activityPropertyAttribute.IsDesignerCritical,
activityPropertyAttribute.DefaultWorkflowStorageProvider,
activityPropertyAttribute.DisableWorkflowProviderSelection,
activityPropertyAttribute.ConsiderValuesAsOutcomes
));
}
}
private async ValueTask SetNestedActivityPropertiesAsync(object nestedInstance, ActivityExecutionContext activityExecutionContext, IDictionary <string, IActivityPropertyValueProvider> providers, IActivityPropertyDefaultValueResolver defaultValueResolver, string nestedInstanceName = null, CancellationToken cancellationToken = default)
{
var properties = nestedInstance.GetType().GetProperties().Where(IsActivityInputProperty).ToList();
var nestedProperties = nestedInstance.GetType().GetProperties().Where(IsActivityObjectInputProperty).ToList();
foreach (var property in properties)
{
var propertyName = nestedInstanceName == null ? property.Name : $"{nestedInstanceName}_{property.Name}";
if (!providers.TryGetValue(propertyName, out var provider))
{
continue;
}
try
{
var value = await provider.GetValueAsync(activityExecutionContext, cancellationToken);
if (value == null)
{
value = defaultValueResolver.GetDefaultValue(property);
}
if (value != null)
{
property.SetValue(nestedInstance, value);
}
}
catch (Exception e)
{
throw new CannotSetActivityPropertyValueException($@"An exception was thrown whilst setting '{nestedInstance.GetType().Name}.{property.Name}'. See the inner exception for further details.", e);
}
}
foreach (var nestedProperty in nestedProperties)
{
var instance = Activator.CreateInstance(nestedProperty.PropertyType);
var nextInstanceName = nestedInstanceName == null ? nestedProperty.Name : $"{nestedInstanceName}_{nestedProperty.Name}";
await SetNestedActivityPropertiesAsync(instance, activityExecutionContext, providers, defaultValueResolver, nextInstanceName, cancellationToken);
nestedProperty.SetValue(nestedInstance, instance);
}
}