private void ProcessDescriptors(System.ComponentModel.PropertyDescriptor[] descriptors)
{
foreach (var attributeDesc in descriptors.OfType <AttributePropertyDescriptor>())
{
var args = attributeDesc.AttributeInfo.GetTagLocal <PropertyChangedEventArgsCollection>();
if (args == null)
{
args = new PropertyChangedEventArgsCollection();
attributeDesc.AttributeInfo.SetTag <PropertyChangedEventArgsCollection>(args);
}
args.Add(new PropertyChangedEventArgs(attributeDesc.DisplayName));
}
}
/// <summary>
/// Checks all property descriptors of adapter type and when an ObservableDomPropertyAttribute
/// is present on the descriptor, finds the AttributeInfo with matching name on the DomNodeType,
/// and sets PropertyChangedEventArgs tags to match</summary>
/// <param name="adapterType">Type of adapter</param>
/// <param name="nodeType">DomNode type</param>
private static void AddAttributeTags(Type adapterType, DomNodeType nodeType)
{
foreach (var property in adapterType.GetProperties())
{
object[] attributes = property.GetCustomAttributes(typeof(ObservableDomPropertyAttribute), true);
if (attributes != null && attributes.Length > 0)
{
var eventArgs = new PropertyChangedEventArgs(property.Name);
foreach (var attribute in attributes)
{
var attributeName = ((ObservableDomPropertyAttribute)attribute).AttributeName;
var currentType = nodeType;
var attributeInfo = currentType.GetAttributeInfo(attributeName);
Requires.NotNull(attributeInfo, "Unrecognized attribute name in ObservableDomPropertyAttribute");
// Each base type may have duplicate attributeInfo if it is an inherited attribute
// We need to set the tag on each base attributeInfo so that the PropertyChanged event
// will be raised even if the attribute is set on a base type
while (currentType != DomNodeType.BaseOfAllTypes && attributeInfo != null)
{
var args = attributeInfo.GetTagLocal <PropertyChangedEventArgsCollection>();
if (args == null)
{
args = new PropertyChangedEventArgsCollection();
attributeInfo.SetTag(args);
}
args.Add(eventArgs);
currentType = currentType.BaseType;
attributeInfo = currentType.GetAttributeInfo(attributeName);
}
}
}
}
}
private void ProcessDescriptors(System.ComponentModel.PropertyDescriptor[] descriptors)
{
foreach (var attributeDesc in descriptors.OfType<AttributePropertyDescriptor>())
{
var args = attributeDesc.AttributeInfo.GetTagLocal<PropertyChangedEventArgsCollection>();
if (args == null)
{
args = new PropertyChangedEventArgsCollection();
attributeDesc.AttributeInfo.SetTag<PropertyChangedEventArgsCollection>(args);
}
args.Add(new PropertyChangedEventArgs(attributeDesc.DisplayName));
}
}
