Trait AnyModifierElement 

pub trait AnyModifierElement: Debug {
    // Required methods
    fn node_type(&self) -> TypeId;
    fn element_type(&self) -> TypeId;
    fn create_node(&self) -> Rc<RefCell<dyn ModifierNode>>;
    fn can_update_node(&self, node: &dyn ModifierNode) -> bool;
    fn update_node(&self, node: &mut dyn ModifierNode);
    fn key(&self) -> Option<u64>;
    fn hash_code(&self) -> u64;
    fn equals_element(&self, other: &dyn AnyModifierElement) -> bool;
    fn inspector_name(&self) -> &'static str;
    fn record_inspector_properties(
        &self,
        visitor: &mut dyn FnMut(&'static str, String),
    );
    fn requires_update(&self) -> bool;
    fn auto_invalidates_on_update(&self) -> bool;
    fn update_invalidation_kind(&self) -> Option<InvalidationKind>;
    fn as_any(&self) -> &dyn Any;

    // Provided methods
    fn capabilities(&self) -> NodeCapabilities { ... }
    fn provides_composition_locals(&self) -> bool { ... }
    fn provided_composition_locals(&self) -> Vec<ProvidedValue> { ... }
}

Type-erased modifier element used by the runtime to reconcile chains.

Required Methods

fn node_type(&self) -> TypeId

The type of node that the element creates.

fn element_type(&self) -> TypeId

The type of the element itself.

fn create_node(&self) -> Rc<RefCell<dyn ModifierNode>>

A new node for this element, in the shared cell its chain entry keeps.

fn can_update_node(&self, node: &dyn ModifierNode) -> bool

Whether node is of the type that this element updates.

fn update_node(&self, node: &mut dyn ModifierNode)

Brings node up to date with the data of this element.

fn key(&self) -> Option<u64>

The key that tells apart several elements of one type, or None when the element has none.

fn hash_code(&self) -> u64

The hash of the element, computed once when the element was wrapped.

fn equals_element(&self, other: &dyn AnyModifierElement) -> bool

Whether other is an element of the same type with equal data.

fn inspector_name(&self) -> &'static str

The name that inspector tooling shows for the element.

fn record_inspector_properties( &self, visitor: &mut dyn FnMut(&'static str, String), )

Reports each inspector property of the element to visitor as a name and a value.

fn requires_update(&self) -> bool

Whether the node must be updated even when the new element equals the old one.

fn auto_invalidates_on_update(&self) -> bool

Whether updating an existing node invalidates all pipeline stages that its capabilities cover.

fn update_invalidation_kind(&self) -> Option<InvalidationKind>

The one pipeline stage that an update invalidates, or None to invalidate by capabilities.

fn as_any(&self) -> &dyn Any

Returns the element as Any, for downcasting to its concrete type.

Provided Methods

fn capabilities(&self) -> NodeCapabilities

The capabilities of the nodes that the element creates.

fn provides_composition_locals(&self) -> bool

Whether this element has composition locals for its content.

fn provided_composition_locals(&self) -> Vec<ProvidedValue>

The composition locals this element hands to its content.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors