/// <summary>
/// Simple registration, metadata, validation, and a read-only property
/// key. Calling this version restricts the property such that it can
/// only be set via the corresponding overload of DependencyObject.SetValue.
/// </summary>
public static DependencyPropertyKey RegisterAttachedReadOnly(string name, Type propertyType, Type ownerType, PropertyMetadata defaultMetadata, ValidateValueCallback validateValueCallback)
{
RegisterParameterValidation(name, propertyType, ownerType);
// Establish default metadata for all types, if none is provided
if (defaultMetadata == null)
{
defaultMetadata = AutoGeneratePropertyMetadata(propertyType, validateValueCallback, name, ownerType);
}
// We create a DependencyPropertyKey at this point with a null property
// and set that in the _readOnlyKey field. This is so the property is
// marked as requiring a key immediately. If something fails in the
// initialization path, the property is still marked as needing a key.
// This is better than the alternative of creating and setting the key
// later, because if that code fails the read-only property would not
// be marked read-only. The intent of this mildly convoluted code
// is so we fail securely.
DependencyPropertyKey authorizedKey = new DependencyPropertyKey(null);
DependencyProperty property = RegisterCommon(name, propertyType, ownerType, defaultMetadata, validateValueCallback);
property._readOnlyKey = authorizedKey;
authorizedKey.SetDependencyProperty(property);
return(authorizedKey);
}
/// <summary>Registers a read-only attached property, with the specified property type, owner type, property metadata, and a validation callback. </summary>
/// <returns>A dependency property key that should be used to set the value of a static read-only field in your class, which is then used to reference the dependency property.</returns>
/// <param name="name">The name of the dependency property to register.</param>
/// <param name="propertyType">The type of the property.</param>
/// <param name="ownerType">The owner type that is registering the dependency property.</param>
/// <param name="defaultMetadata">Property metadata for the dependency property.</param>
/// <param name="validateValueCallback">A reference to a user-created callback that should perform any custom validation of the dependency property value beyond typical type validation.</param>
public static DependencyPropertyKey RegisterAttachedReadOnly(string name, Type propertyType, Type ownerType, PropertyMetadata defaultMetadata, ValidateValueCallback validateValueCallback)
{
RegisterParameterValidation(name, propertyType, ownerType);
if (defaultMetadata == null)
{
defaultMetadata = AutoGeneratePropertyMetadata(propertyType, validateValueCallback, name, ownerType);
}
DependencyPropertyKey dependencyPropertyKey = new DependencyPropertyKey(null);
DependencyProperty dependencyProperty = RegisterCommon(name, propertyType, ownerType, defaultMetadata, validateValueCallback);
dependencyProperty._readOnlyKey = dependencyPropertyKey;
dependencyPropertyKey.SetDependencyProperty(dependencyProperty);
return(dependencyPropertyKey);
}
/// <summary>
/// Simple registration, metadata, validation, and a read-only property
/// key. Calling this version restricts the property such that it can
/// only be set via the corresponding overload of DependencyObject.SetValue.
/// </summary>
public static DependencyPropertyKey RegisterReadOnly(
string name,
Type propertyType,
Type ownerType,
PropertyMetadata typeMetadata,
ValidateValueCallback validateValueCallback)
{
RegisterParameterValidation(name, propertyType, ownerType);
PropertyMetadata defaultMetadata = null;
if (typeMetadata != null && typeMetadata.DefaultValueWasSet())
{
defaultMetadata = new PropertyMetadata(typeMetadata.DefaultValue);
}
else
{
defaultMetadata = AutoGeneratePropertyMetadata(propertyType, validateValueCallback, name, ownerType);
}
// We create a DependencyPropertyKey at this point with a null property
// and set that in the _readOnlyKey field. This is so the property is
// marked as requiring a key immediately. If something fails in the
// initialization path, the property is still marked as needing a key.
// This is better than the alternative of creating and setting the key
// later, because if that code fails the read-only property would not
// be marked read-only. The intent of this mildly convoluted code
// is so we fail securely.
DependencyPropertyKey authorizationKey = new DependencyPropertyKey(null); // No property yet, use null as placeholder.
DependencyProperty property = RegisterCommon(name, propertyType, ownerType, defaultMetadata, validateValueCallback);
property._readOnlyKey = authorizationKey;
authorizationKey.SetDependencyProperty(property);
if (typeMetadata == null)
{
// No metadata specified, generate one so we can specify the authorized key.
typeMetadata = AutoGeneratePropertyMetadata(propertyType, validateValueCallback, name, ownerType);
}
// Authorize registering type for read-only access, create key.
#pragma warning suppress 6506 // typeMetadata is never null, since we generate default metadata if none is provided.
// Apply type-specific metadata to owner type only
property.OverrideMetadata(ownerType, typeMetadata, authorizationKey);
return(authorizationKey);
}
/// <summary>Registers a read-only dependency property, with the specified property type, owner type, property metadata, and a validation callback. </summary>
/// <returns>A dependency property key that should be used to set the value of a static read-only field in your class, which is then used to reference the dependency property later.</returns>
/// <param name="name">The name of the dependency property to register.</param>
/// <param name="propertyType">The type of the property.</param>
/// <param name="ownerType">The owner type that is registering the dependency property.</param>
/// <param name="typeMetadata">Property metadata for the dependency property.</param>
/// <param name="validateValueCallback">A reference to a user-created callback that should perform any custom validation of the dependency property value beyond typical type validation.</param>
public static DependencyPropertyKey RegisterReadOnly(string name, Type propertyType, Type ownerType, PropertyMetadata typeMetadata, ValidateValueCallback validateValueCallback)
{
RegisterParameterValidation(name, propertyType, ownerType);
PropertyMetadata propertyMetadata = null;
propertyMetadata = ((typeMetadata == null || !typeMetadata.DefaultValueWasSet()) ? AutoGeneratePropertyMetadata(propertyType, validateValueCallback, name, ownerType) : new PropertyMetadata(typeMetadata.DefaultValue));
DependencyPropertyKey dependencyPropertyKey = new DependencyPropertyKey(null);
DependencyProperty dependencyProperty = RegisterCommon(name, propertyType, ownerType, propertyMetadata, validateValueCallback);
dependencyProperty._readOnlyKey = dependencyPropertyKey;
dependencyPropertyKey.SetDependencyProperty(dependencyProperty);
if (typeMetadata == null)
{
typeMetadata = AutoGeneratePropertyMetadata(propertyType, validateValueCallback, name, ownerType);
}
dependencyProperty.OverrideMetadata(ownerType, typeMetadata, dependencyPropertyKey);
return(dependencyPropertyKey);
}
/// <summary>
/// Simple registration, metadata, validation, and a read-only property
/// key. Calling this version restricts the property such that it can
/// only be set via the corresponding overload of DependencyObject.SetValue.
/// </summary>
public static DependencyPropertyKey RegisterAttachedReadOnly(string name, Type propertyType, Type ownerType, PropertyMetadata defaultMetadata, ValidateValueCallback validateValueCallback)
{
RegisterParameterValidation(name, propertyType, ownerType);
// Establish default metadata for all types, if none is provided
if (defaultMetadata == null)
{
defaultMetadata = AutoGeneratePropertyMetadata( propertyType, validateValueCallback, name, ownerType );
}
// We create a DependencyPropertyKey at this point with a null property
// and set that in the _readOnlyKey field. This is so the property is
// marked as requiring a key immediately. If something fails in the
// initialization path, the property is still marked as needing a key.
// This is better than the alternative of creating and setting the key
// later, because if that code fails the read-only property would not
// be marked read-only. The intent of this mildly convoluted code
// is so we fail securely.
DependencyPropertyKey authorizedKey = new DependencyPropertyKey(null);
DependencyProperty property = RegisterCommon( name, propertyType, ownerType, defaultMetadata, validateValueCallback);
property._readOnlyKey = authorizedKey;
authorizedKey.SetDependencyProperty(property);
return authorizedKey;
}
/// <summary>
/// Simple registration, metadata, validation, and a read-only property
/// key. Calling this version restricts the property such that it can
/// only be set via the corresponding overload of DependencyObject.SetValue.
/// </summary>
public static DependencyPropertyKey RegisterReadOnly(
string name,
Type propertyType,
Type ownerType,
PropertyMetadata typeMetadata,
ValidateValueCallback validateValueCallback )
{
RegisterParameterValidation(name, propertyType, ownerType);
PropertyMetadata defaultMetadata = null;
if (typeMetadata != null && typeMetadata.DefaultValueWasSet())
{
defaultMetadata = new PropertyMetadata(typeMetadata.DefaultValue);
}
else
{
defaultMetadata = AutoGeneratePropertyMetadata(propertyType,validateValueCallback,name,ownerType);
}
// We create a DependencyPropertyKey at this point with a null property
// and set that in the _readOnlyKey field. This is so the property is
// marked as requiring a key immediately. If something fails in the
// initialization path, the property is still marked as needing a key.
// This is better than the alternative of creating and setting the key
// later, because if that code fails the read-only property would not
// be marked read-only. The intent of this mildly convoluted code
// is so we fail securely.
DependencyPropertyKey authorizationKey = new DependencyPropertyKey(null); // No property yet, use null as placeholder.
DependencyProperty property = RegisterCommon(name, propertyType, ownerType, defaultMetadata, validateValueCallback);
property._readOnlyKey = authorizationKey;
authorizationKey.SetDependencyProperty(property);
if (typeMetadata == null )
{
// No metadata specified, generate one so we can specify the authorized key.
typeMetadata = AutoGeneratePropertyMetadata(propertyType,validateValueCallback,name,ownerType);
}
// Authorize registering type for read-only access, create key.
#pragma warning suppress 6506 // typeMetadata is never null, since we generate default metadata if none is provided.
// Apply type-specific metadata to owner type only
property.OverrideMetadata(ownerType, typeMetadata, authorizationKey);
return authorizationKey;
}
