Struct BasicModifierNodeContext 

pub struct BasicModifierNodeContext { /* private fields */ }

Lightweight ModifierNodeContext implementation that records invalidation requests and update signals.

The context intentionally avoids leaking runtime details so the core crate can evolve independently from higher level UI crates. It simply stores the sequence of requested invalidation kinds and whether an explicit update was requested. Callers can inspect or drain this state after driving a ModifierNodeChain reconciliation pass.

Implementations

impl BasicModifierNodeContext

pub fn new() -> Self

Creates a new empty context.

pub fn invalidations(&self) -> &[ModifierInvalidation]

Returns the ordered list of invalidation kinds that were requested since the last call to [clear_invalidations]. Duplicate requests for the same kind are coalesced.

pub fn clear_invalidations(&mut self)

Removes all currently recorded invalidation kinds.

pub fn take_invalidations(&mut self) -> Vec<ModifierInvalidation>

Drains the recorded invalidations and returns them to the caller.

pub fn update_requested(&self) -> bool

Returns whether an update was requested since the last call to [take_update_requested].

pub fn take_update_requested(&mut self) -> bool

Returns whether an update was requested and clears the flag.

pub fn set_node_id(&mut self, id: Option<NodeId>)

Sets the node ID associated with this context.

Trait Implementations

impl Clone for BasicModifierNodeContext

fn clone(&self) -> BasicModifierNodeContext

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BasicModifierNodeContext

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for BasicModifierNodeContext

fn default() -> BasicModifierNodeContext

Returns the “default value” for a type.

impl ModifierNodeContext for BasicModifierNodeContext

fn invalidate(&mut self, kind: InvalidationKind)

Requests that a particular pipeline stage be invalidated.

fn request_update(&mut self)

Requests that the node’s update method run again outside of a regular composition pass.

fn push_active_capabilities(&mut self, capabilities: NodeCapabilities)

Signals that a node with capabilities is about to interact with this context.

fn pop_active_capabilities(&mut self)

Signals that the most recent node interaction has completed.

fn node_id(&self) -> Option<NodeId>

Returns the ID of the layout node this modifier is attached to, if known. This is used by modifiers that need to register callbacks for invalidation (e.g. Scroll).