Struct handler_map::HandlerMap

pub struct HandlerMap(_);

Struct that maps types with functions or closures that can receive them.

See the module-level documentation for more information.

Methods

impl HandlerMap

pub fn new() -> HandlerMap

Creates a new map with no handlers.

pub fn insert<T: Any, F: Fn(T) + 'static>(&mut self, handler: F)

Registers a new handler into the map.

pub fn remove<T: Any>(&mut self)

Un-registers the handler for the given type from this map.

pub fn is_registered<T: Any>(&self) -> bool

Returns true if the given message type has a handler registered in the map.

pub fn val_is_registered<T: Any>(&self, _msg: &T) -> bool

Returns true if the given message has a handler registered in this map.

This is the same operation as is_registered, but allows you to call it with a value rather than having to supply the type.

pub fn call<T: Any>(&self, msg: T) -> bool

Calls the handler with the given message, returning whether the handler was registered.

Trait Implementations

impl Default for HandlerMap

fn default() -> HandlerMap

Returns the "default value" for a type.