/// <summary>
/// Returns a collection of properties for the type of array specified by the value parameter,
/// using the specified context and properties.
/// </summary>
/// <param name="context">An ITypeDescriptorContext that provides a format context.</param>
/// <param name="obj">An Object that specifies the type of array for which to get properties.</param>
/// <param name="attributes">An array of type Attribute that is used as a filter.</param>
/// <returns>A PropertyDescriptorCollection with the properties that are exposed for this data type, or a null reference (Nothing in Visual Basic) if there are no properties.</returns>
public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object obj, Attribute[] attributes)
{
PropertyDescriptorCollection propCollection = new PropertyDescriptorCollection(null);
CustomProperties attr = obj as CustomProperties;
if (attr != null && context != null)
{
// Get series associated with custom attribute
Series series = (attr.DataPointCustomProperties is Series) ? ((Series)attr.DataPointCustomProperties) : attr.DataPointCustomProperties.series;
if (series != null &&
series.Common != null)
{
// Loop through all registered custom properties
CustomPropertyRegistry registry = (CustomPropertyRegistry)series.Common.container.GetService(typeof(CustomPropertyRegistry));
foreach (CustomPropertyInfo attrInfo in registry.registeredCustomProperties)
{
// Check if attribute description matches curent selection in property browser
if (IsApplicableCustomProperty(attrInfo, context.Instance))
{
// Get array of property properties
Attribute[] propAttributes = GetPropertyAttributes(attrInfo);
// Create property descriptor
CustomAttributesPropertyDescriptor propertyDescriptor = new CustomAttributesPropertyDescriptor(
typeof(CustomProperties),
attrInfo.Name,
attrInfo.ValueType,
propAttributes,
attrInfo);
// Add descriptor into the collection
propCollection.Add(propertyDescriptor);
}
}
// Always add "UserDefined" property for all user defined custom properties
Attribute[] propUserDefinedAttributes = new Attribute[] {
new NotifyParentPropertyAttribute(true),
new RefreshPropertiesAttribute(RefreshProperties.All),
new DescriptionAttribute(SR.DescriptionAttributeUserDefined)
};
// Create property descriptor
CustomAttributesPropertyDescriptor propertyUserDefinedDescriptor = new CustomAttributesPropertyDescriptor(
typeof(CustomProperties),
"UserDefined",
typeof(string),
propUserDefinedAttributes,
null);
// Add descriptor into the collection
propCollection.Add(propertyUserDefinedDescriptor);
}
}
return(propCollection);
}
public CommonElements(ChartService chart)
{
_chart = chart;
DataManager = new DataManager(this);
CustomPropertyRegistry = new CustomPropertyRegistry();
ImageLoader = new ImageLoader(this);
ChartTypeRegistry = new ChartTypeRegistry();
BorderTypeRegistry = new BorderTypeRegistry();
FormulaRegistry = new FormulaRegistry();
HotRegionsList = new(this);
}