Trait ModifierNodeContext

Source

pub trait ModifierNodeContext {
    // Provided methods
    fn invalidate(&mut self, _kind: InvalidationKind) { ... }
    fn request_update(&mut self) { ... }
    fn node_id(&self) -> Option<NodeId> { ... }
    fn push_active_capabilities(&mut self, _capabilities: NodeCapabilities) { ... }
    fn pop_active_capabilities(&mut self) { ... }
}

Expand description

Runtime services exposed to modifier nodes while attached to a tree.

Provided Methods§

Source

fn invalidate(&mut self, _kind: InvalidationKind)

Requests that a particular pipeline stage be invalidated.

Source

fn request_update(&mut self)

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

Source

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).

Source