// Writes a collection of attributes representing properties with local values set on them.
// If the value cannot be serialized as a string, adds the property to a collection of complexProperties.
private static void WriteLocallySetProperties(Type elementTypeStandardized, ITextPointer context, XmlWriter xmlWriter, DependencyObject complexProperties)
{
TextPointer textPointer = context as TextPointer;
if (textPointer == null)
{
// We can't have custom properties if we're not a TextPointer
return;
}
LocalValueEnumerator locallySetProperties = context.GetLocalValueEnumerator();
DependencyProperty[] inheritableProperties = TextSchema.GetInheritableProperties(elementTypeStandardized);
DependencyProperty[] nonInheritableProperties = TextSchema.GetNoninheritableProperties(elementTypeStandardized);
while (locallySetProperties.MoveNext())
{
DependencyProperty locallySetProperty = (DependencyProperty)locallySetProperties.Current.Property;
// Don't serialize read-only properties, or any properties registered or owned by a
// a class in the framework (we only want to serialize custom properties), to be
// consistent with our behavior for non-custom inlines.
//
if (!locallySetProperty.ReadOnly &&
!IsPropertyKnown(locallySetProperty, inheritableProperties, nonInheritableProperties) &&
!TextSchema.IsKnownType(locallySetProperty.OwnerType))
{
object propertyValue = context.ReadLocalValue(locallySetProperty);
string stringValue = DPTypeDescriptorContext.GetStringValue(locallySetProperty, propertyValue);
if (stringValue != null)
{
stringValue = FilterNaNStringValueForDoublePropertyType(stringValue, locallySetProperty.PropertyType);
string propertyName = GetPropertyNameForElement(locallySetProperty, elementTypeStandardized, /*forceComplexName:*/false);
xmlWriter.WriteAttributeString(propertyName, stringValue);
}
else
{
complexProperties.SetValue(locallySetProperty, propertyValue);
}
}
}
// *** WE NEED TO BETTER UNDERSTAND THE IMPLICATIONS OF SERIALIZING NON-DP CLR PROPERTIES, SO THE REST OF
// *** THIS METHOD IS DISABLED UNTIL WE DECIDE THE BEST WAY TO HANDLE THEM.
// *** CLRTypeDescriptorContext is essentially the same as DPTypeDescriptorContext.
#if false
// Check all CLR properties
// Note that this is partially redundant. TypeDescriptor.GetProperties, when called on a
// DependencyObject, will return all properties that are set-- including all those already
// serialized as Inheritable, NonInheritable, or LocallySet properties. A potential
// optimization, therefore, is to remove those serialization methods and simply use this one
// for everything when we've opted into custom element serialization.
PropertyDescriptorCollection descriptorCollection = TypeDescriptor.GetProperties(textPointer.Parent);
IEnumerator descriptors = descriptorCollection.GetEnumerator();
while (descriptors.MoveNext())
{
PropertyDescriptor current = (PropertyDescriptor)descriptors.Current;
// ShouldSerializeValue() will return true for readonly properties that have explicitly
// been told to serialize, such as Span.Inlines. If we serialize a read-only property,
// however, the parser will throw an exception when we try to deserialize. So we
// explicitly skip all read-only properties, and all DPs.
if (!current.ShouldSerializeValue(textPointer.Parent) || current.IsReadOnly || current is MS.Internal.ComponentModel.DependencyObjectPropertyDescriptor)
{
continue;
}
// Serialize the property
object propertyValue = current.GetValue(textPointer.Parent);
if (propertyValue != null)
{
string stringValue = CLRTypeDescriptorContext.GetStringValue(current, propertyValue);
if (stringValue != null)
{
stringValue = FilterNaNStringValueForDoublePropertyType(stringValue, current.PropertyType);
xmlWriter.WriteAttributeString(current.Name, stringValue);
}
else
{
//
}
}
}
#endif
}
