Struct HandlerRegistry 

pub struct HandlerRegistry { /* private fields */ }

Global handler registry for the render tree

This stores handlers indexed by LayoutNodeId so the EventRouter can dispatch events to the correct handlers.

Implementations

impl HandlerRegistry

pub fn new() -> HandlerRegistry

Create a new empty registry

pub fn register(&mut self, node_id: LayoutNodeId, handlers: EventHandlers)

Register handlers for a node

pub fn get(&self, node_id: LayoutNodeId) -> Option<&EventHandlers>

Get handlers for a node

pub fn dispatch(&self, ctx: &EventContext)

Dispatch an event to a node’s handlers

pub fn has_handler(&self, node_id: LayoutNodeId, event_type: u32) -> bool

Check if a node has handlers for a specific event type

pub fn remove(&mut self, node_id: LayoutNodeId)

Remove handlers for a node

pub fn clear(&mut self)

Clear all handlers

pub fn broadcast(&self, event_type: u32, base_ctx: &EventContext)

Broadcast an event to ALL nodes that have handlers for the given event type

This is used for keyboard events (TEXT_INPUT, KEY_DOWN) after a tree rebuild, when the router’s focused node ID may be stale. Each handler can check its own internal focus state to determine if it should process the event.

pub fn nodes_with_handler(&self, event_type: u32) -> Vec<LayoutNodeId>

Get all node IDs that have handlers for a specific event type

Trait Implementations

impl Default for HandlerRegistry

fn default() -> HandlerRegistry

Returns the “default value” for a type.