CanSerializeProperty(
MemberInfo memberInfo,
SerializersCacheManager serializersCacheManager,
out DesignerSerializationVisibility visibility,
out Type serializerTypeForProperty,
out TypeConverter typeConverterForProperty,
out DefaultValueAttribute defaultValueAttr,
out DesignerSerializationOptionsAttribute designerSerializationFlagsAttr
)
{
bool canSerializeProperty = false;
// The conditions that we care about in those properties are as follows
// 1. Properties that are decorated with the DesignerSerializationVisibility
// and that are not hidden
//
visibility = DesignerSerializationVisibility.Visible;
serializerTypeForProperty = null;
typeConverterForProperty = null;
defaultValueAttr = null;
designerSerializationFlagsAttr = null;
Attribute[] attributes = Attribute.GetCustomAttributes(memberInfo);
for (int numberOfAttributes = 0;
numberOfAttributes < attributes.Length;
numberOfAttributes++)
{
//
// Based on the attribute type, different properties could be set
//
Attribute attribute = attributes[numberOfAttributes];
if (attribute is DesignerSerializationVisibilityAttribute)
{
visibility = ((DesignerSerializationVisibilityAttribute)attribute).Visibility;
}
else if (attribute is DefaultValueAttribute)
{
defaultValueAttr = (DefaultValueAttribute)attribute;
}
else if (attribute is DesignerSerializationOptionsAttribute)
{
designerSerializationFlagsAttr = (DesignerSerializationOptionsAttribute)attribute;
}
}
if (visibility != DesignerSerializationVisibility.Hidden)
{
canSerializeProperty = true;
}
return(canSerializeProperty);
}
TypeDependencyPropertyCache(
MemberInfo memberInfo,
Object dependencyProperty,
DesignerSerializationVisibility visibility,
Type serializerTypeForProperty,
TypeConverter typeConverterForProperty,
DefaultValueAttribute defaultValueAttr,
DesignerSerializationOptionsAttribute designerSerializationFlagsAttr
) :
base()
{
this.MemberInfo = memberInfo;
this.DependencyProperty = dependencyProperty;
this.PropertyInfo = memberInfo as PropertyInfo;
this.Visibility = visibility;
this.SerializerTypeForProperty = serializerTypeForProperty;
this.TypeConverterForProperty = typeConverterForProperty;
this.DefaultValueAttr = defaultValueAttr;
this.DesignerSerializationOptionsAttr = designerSerializationFlagsAttr;
this.PropertyValue = null;
}
TypePropertyCache(
PropertyInfo propertyInfo,
DesignerSerializationVisibility visibility,
Type serializerTypeForProperty,
TypeConverter typeConverterForProperty,
DefaultValueAttribute defaultValueAttr,
DesignerSerializationOptionsAttribute designerSerializationFlagsAttr
)
{
if (propertyInfo == null)
{
throw new ArgumentNullException("propertyInfo");
}
this.propertyInfo = propertyInfo;
this.visibility = visibility;
this.serializerTypeForProperty = serializerTypeForProperty;
this.typeConverterForProperty = typeConverterForProperty;
this.defaultValueAttr = defaultValueAttr;
this.designerSerializationFlagsAttr = designerSerializationFlagsAttr;
this.propertyValue = null;
}
GetTypeDependencyPropertiesCacheItem(
Object serializableObject
)
{
if (serializableObject == null)
{
throw new ArgumentNullException("serializableObject");
}
Type type = serializableObject.GetType();
TypeDependencyPropertiesCacheItem
cachedItem = (TypeDependencyPropertiesCacheItem)_typesDependencyPropertiesCacheTable[type];
if (cachedItem == null)
{
//
// This means that the type was not seen before
// We have to create a new entry to that type
//
DependencyObject objectAsDependencyObject = serializableObject as DependencyObject;
if (objectAsDependencyObject != null)
{
//
// First we have to figure out if this dependency
// object has any dependency properties that can be
// serializable and this has to happen before creating
// any cache
//
DependencyPropertyList list = new DependencyPropertyList(1);
for (LocalValueEnumerator localValues = objectAsDependencyObject.GetLocalValueEnumerator();
localValues.MoveNext();)
{
DependencyProperty dependencyProperty = localValues.Current.Property;
list.Add(dependencyProperty);
}
if (list.Count > 0)
{
int numOfSerializableDependencyProperties = 0;
TypeDependencyPropertyCache[] dependencyPropertiesCache = new TypeDependencyPropertyCache[list.Count];
for (int indexInDependencyPropertyList = 0;
indexInDependencyPropertyList < list.Count;
indexInDependencyPropertyList++)
{
DependencyProperty dependencyProperty = list.List[indexInDependencyPropertyList];
DesignerSerializationVisibility visibility = DesignerSerializationVisibility.Visible;
Type serializerTypeForProperty = null;
TypeConverter typeConverterForProperty = null;
DefaultValueAttribute defaultValueAttr = null;
DesignerSerializationOptionsAttribute
designerSerializationFlagsAttr = null;
Type propertyType = dependencyProperty.PropertyType;
//
// Get the static setter member for the DependencyProperty
//
MemberInfo memberInfo = dependencyProperty.
OwnerType.
GetMethod("Get" + dependencyProperty.Name,
BindingFlags.Public | BindingFlags.NonPublic |
BindingFlags.Static | BindingFlags.FlattenHierarchy);
// Note: This is because the IService model does not abide
// by this pattern of declaring the DependencyProperty on
// the OwnerType. That is the only exception case.
if (memberInfo == null)
{
//
// Create a PropertyInfo
//
PropertyInfo propertyInfo = null;
PropertyInfo[] properties = dependencyProperty.OwnerType.GetProperties();
String name = dependencyProperty.Name;
for (int i = 0;
i < properties.Length && propertyInfo == null;
i++)
{
if (properties[i].Name == name)
{
propertyInfo = properties[i];
}
}
if (propertyInfo != null)
{
Debug.Assert(propertyInfo.PropertyType == dependencyProperty.PropertyType,
"The property type of the CLR wrapper must match that of the DependencyProperty itself.");
memberInfo = propertyInfo;
//
// We have to special case Print Tickets here.
// Print Tickets are defined on as dependency properties on
// fixed objects of types:
// o FixedDocumentSequence
// o FixedDocument
// o FixedPage
// and in order to eliminate the dependency between
// PresentationFramework and System.printing assemblies,
// those dependency properties are defined as of type "object"
// and hence if we are here and we have a property of name
// "PrintTicket" and owned by one of the above mentioned types
// we try to get the serializer for the PrintTicket object
//
if (propertyInfo.Name == XpsNamedProperties.PrintTicketProperty &&
((dependencyProperty.OwnerType == typeof(System.Windows.Documents.FixedPage)) ||
(dependencyProperty.OwnerType == typeof(System.Windows.Documents.FixedDocument)) ||
(dependencyProperty.OwnerType == typeof(System.Windows.Documents.FixedDocumentSequence))))
{
propertyType = typeof(PrintTicket);
}
}
}
if (memberInfo != null &&
TypeDependencyPropertyCache.
CanSerializeProperty(memberInfo,
this,
out visibility,
out serializerTypeForProperty,
out typeConverterForProperty,
out defaultValueAttr,
out designerSerializationFlagsAttr) == true)
{
TypeCacheItem typeCacheItem = GetTypeCacheItem(propertyType);
serializerTypeForProperty = serializerTypeForProperty == null ? typeCacheItem.SerializerType : serializerTypeForProperty;
typeConverterForProperty = typeConverterForProperty == null ? typeCacheItem.TypeConverter : typeConverterForProperty;
TypeDependencyPropertyCache
dependencyPropertyCache = new TypeDependencyPropertyCache(memberInfo,
dependencyProperty,
visibility,
serializerTypeForProperty,
typeConverterForProperty,
defaultValueAttr,
designerSerializationFlagsAttr);
dependencyPropertiesCache[numOfSerializableDependencyProperties++] = dependencyPropertyCache;
}
}
if (numOfSerializableDependencyProperties > 0)
{
TypeDependencyPropertyCache[] serializableDependencyPropertiesCache =
new TypeDependencyPropertyCache[numOfSerializableDependencyProperties];
for (int indexInSerializableProperties = 0;
indexInSerializableProperties < numOfSerializableDependencyProperties;
indexInSerializableProperties++)
{
serializableDependencyPropertiesCache[indexInSerializableProperties] =
dependencyPropertiesCache[indexInSerializableProperties];
}
cachedItem = new TypeDependencyPropertiesCacheItem(type,
serializableDependencyPropertiesCache);
_typesDependencyPropertiesCacheTable[type] = cachedItem;
}
}
}
}
return(cachedItem);
}
GetClrSerializableProperties(
SerializersCacheManager serializersCacheManager
)
{
if (clrSerializableProperties == null)
{
PropertyInfo[] properties = type.GetProperties();
//
// Separate out the serializable Clr properties
//
int IndexOfSerializableProperties = 0;
int[] propertiesIndex = new int[properties.Length];
TypePropertyCache[] cachedProperties = new TypePropertyCache[properties.Length];
for (int indexInProperties = 0;
indexInProperties < properties.Length;
indexInProperties++)
{
PropertyInfo propertyInfo = properties[indexInProperties];
DesignerSerializationVisibility visibility = DesignerSerializationVisibility.Visible;
Type serializerTypeForProperty = null;
TypeConverter typeConverterForProperty = null;
DefaultValueAttribute defaultValueAttr = null;
DesignerSerializationOptionsAttribute
designerSerializationFlagsAttr = null;
if (CanSerializeProperty(propertyInfo,
serializersCacheManager,
out visibility,
out serializerTypeForProperty,
out typeConverterForProperty,
out defaultValueAttr,
out designerSerializationFlagsAttr) == true)
{
//
// Figure out the Serializer or TypeConverter associated with the
// type of that property. This would potentially be cached in 2
// different places
// 1. The Type Cache
// 2. The TypePropertyCache.
//
TypeCacheItem typeCacheItem = serializersCacheManager.GetTypeCacheItem(propertyInfo.PropertyType);
serializerTypeForProperty = typeCacheItem.SerializerType;
typeConverterForProperty = typeCacheItem.TypeConverter;
//
// We create a cache of this property and all the information we
// deduced about it
//
TypePropertyCache propertyCache = new TypePropertyCache(propertyInfo,
visibility,
serializerTypeForProperty,
typeConverterForProperty,
defaultValueAttr,
designerSerializationFlagsAttr);
propertiesIndex[IndexOfSerializableProperties] = indexInProperties;
cachedProperties[IndexOfSerializableProperties++] = propertyCache;
}
}
clrSerializableProperties = new TypePropertyCache[IndexOfSerializableProperties];
for (int indexInClrProperties = 0;
indexInClrProperties < IndexOfSerializableProperties;
indexInClrProperties++)
{
clrSerializableProperties[indexInClrProperties] = cachedProperties[indexInClrProperties];
}
}
return(clrSerializableProperties);
}
CanSerializeProperty(
PropertyInfo propertyInfo,
SerializersCacheManager serializersCacheManager,
out DesignerSerializationVisibility visibility,
out Type serializerTypeForProperty,
out TypeConverter typeConverterForProperty,
out DefaultValueAttribute defaultValueAttr,
out DesignerSerializationOptionsAttribute designerSerializationFlagsAttr
)
{
bool canSerializeProperty = false;
visibility = DesignerSerializationVisibility.Visible;
serializerTypeForProperty = null;
typeConverterForProperty = null;
defaultValueAttr = null;
designerSerializationFlagsAttr = null;
// The conditions that we care about in those properties are as follows
// 1. Readable properties
// 2. None Indexable Properteis.
// So we can't deal with properties that take name: Item OR
// take the form this[index1, index2, ...]
// 3. Properties that are not backed up by a dependency property
// 4. Properties that are decorated with the DesignerSerializationVisibility
// and that are not hidden
//
if (propertyInfo.CanRead &&
propertyInfo.GetIndexParameters().GetLength(0) == 0)
{
MemberInfo memberInfo = (MemberInfo)propertyInfo;
Attribute[] attributes = Attribute.GetCustomAttributes(memberInfo);
for (int numberOfAttributes = 0;
numberOfAttributes < attributes.Length;
numberOfAttributes++)
{
//
// Based on the attribute type, different properties could be set
//
Attribute attribute = attributes[numberOfAttributes];
if (attribute is DesignerSerializationVisibilityAttribute)
{
visibility = ((DesignerSerializationVisibilityAttribute)attribute).Visibility;
}
else if (attribute is DefaultValueAttribute)
{
defaultValueAttr = (DefaultValueAttribute)attribute;
}
else if (attribute is DesignerSerializationOptionsAttribute)
{
designerSerializationFlagsAttr = (DesignerSerializationOptionsAttribute)attribute;
}
}
object DependencyPropertyORPropertyInfo =
DependencyProperty.FromName(propertyInfo.Name, propertyInfo.DeclaringType);
if (DependencyPropertyORPropertyInfo == null &&
visibility != DesignerSerializationVisibility.Hidden &&
(propertyInfo.CanWrite || visibility == DesignerSerializationVisibility.Content))
{
if (visibility != DesignerSerializationVisibility.Hidden)
{
canSerializeProperty = true;
}
}
}
return(canSerializeProperty);
}
