Struct DirectPropertyBase 

pub struct DirectPropertyBase<T: PropertyValue> { /* private fields */ }

Base class for direct properties.

Holds everything about a direct property that does not depend on the type of its owner.

Implementations

impl<T: PropertyValue> DirectPropertyBase<T>

pub fn as_property(&'static self) -> &'static FerroProperty

The untyped base of the property.

pub fn owner(&self) -> &'static TypeInfo

The class that registered this instance of the property.

pub fn get_unset_value(&self, type_: &'static TypeInfo) -> T

Gets the unset value for the property on the specified type.

pub fn get_unset_value_for(&self, owner: &FerroObject) -> T

Gets the unset value for the property on the type of owner.

pub fn get_metadata( &self, type_: &'static TypeInfo, ) -> Rc<DirectPropertyMetadata<T>>

Gets the property metadata for the specified type.

pub fn get_metadata_for( &self, owner: &FerroObject, ) -> Rc<DirectPropertyMetadata<T>>

Gets the property metadata for the type of owner.

pub fn override_metadata<TOwner: ObjectType>( &self, metadata: DirectPropertyMetadata<T>, )

Overrides the metadata for the property on class TOwner.

pub fn override_metadata_for( &self, type_: &'static TypeInfo, metadata: DirectPropertyMetadata<T>, )

Overrides the metadata for the property on the specified type.

pub fn unregister(&self, type_: &'static TypeInfo)

Removes the metadata registered for the specified type.

Methods from Deref<Target = FerroProperty>

pub fn as_property_info(&'static self) -> Rc<dyn IPropertyInfo>

The property as a shared property description (Rc<dyn IPropertyInfo>), for the places that take a registered property through the property description contract. IPropertyInfo::as_ferro_property gives the property back.

pub fn bind(&'static self) -> IndexerDescriptor

Gets a description of a binding to the property, for the binding indexer of FerroObject. This is the ! operator of a property: !Border.BackgroundProperty is Border::background_property().bind(), and the two-way forms !!Property and ~Property are !Property.bind().

pub fn host_type(&self) -> Option<&'static TypeInfo>

The class an attached property is declared for: the THost of its registration, the type of the objects its accessors (GetX/SetX) take. None for properties that are not attached.

pub fn name(&self) -> &str

The name of the property.

pub fn property_type(&self) -> TypeId

The type of the property’s value.

pub fn property_type_name(&self) -> &'static str

The Rust type name of the property’s value type.

pub fn owner_type(&self) -> &'static TypeInfo

The class that registered the property.

pub fn inherits(&self) -> bool

Whether the property inherits its value.

pub fn is_attached(&self) -> bool

Whether this is an attached property.

pub fn is_direct(&self) -> bool

Whether this is a direct property.

pub fn is_read_only(&self) -> bool

Whether this is a readonly property.

pub fn assign_binding(&self) -> bool

Whether a binding given for this property in markup is assigned to the property as its value rather than bound to it (the “assign binding” attribute of the managed property). The property’s value type is then a binding type. A fact about the definition: it is the same for every owner and is not part of the metadata.

pub fn set_assign_binding(&self, value: bool)

Marks the property as one that bindings are assigned to. Part of the definition of the property: call it where the property is registered (styled and attached properties state it through StyledPropertyOptions::assign_binding).

pub fn id(&self) -> u32

An integer ID that uniquely identifies the property; shared by all owners added with add_owner.

pub fn changed(&'static self) -> &'static PropertyChangedObservable

Notifications of changes to this property on any object.

The handlers are invoked after the object’s own change handling.

pub fn get_metadata(&self, type_: &'static TypeInfo) -> FerroPropertyMetadata

Gets the base metadata of the property on the specified type.

pub fn get_metadata_for(&self, owner: &FerroObject) -> FerroPropertyMetadata

Gets the base metadata of the property on the type of owner.

pub fn unregister(&self, type_: &'static TypeInfo)

Removes the metadata registered for the property on the specified type.

pub fn is_valid_value(&self, value: &dyn Any) -> bool

Checks whether value is valid for the property: of the property’s value type and accepted by its validation callback.

pub fn as_styled<T: PropertyValue>( &'static self, ) -> Option<&'static StyledProperty<T>>

The property as a styled (or attached) property with value type T: the typed view needed to read, set and bind it without boxing. None for direct properties and when T is not the property’s value type.

Trait Implementations

impl<T: PropertyValue> Deref for DirectPropertyBase<T>

type Target = FerroProperty

The resulting type after dereferencing.

fn deref(&self) -> &FerroProperty

Dereferences the value.

impl<T: PropertyValue> TypedProperty for DirectPropertyBase<T>

type Value = T

The value type of the property.

fn untyped(&'static self) -> &'static FerroProperty

The untyped base of the property.