Struct ActionHandlerContribution 

pub struct ActionHandlerContribution {
    pub action_name: &'static str,
    pub handler: ActionHandler,
}

A global (buffer-agnostic) action-handler contribution declared by a mode via Mode::action_handlers (SN.3c.0).

Use this for handlers whose body reads the active buffer / cursor / services from the ActionContext at call time and closes over no per-buffer state — they are registered ONCE at boot (the host walks every mode’s action_handlers(), resolves action_name → CommandId, and registers the handler), and live for the app’s lifetime. The owning chord’s per-keystroke mode gating (K.1.c) still scopes where the chord fires; the handler itself is global.

Per-buffer handlers (tied to a live session / per-activation state) must NOT use this — they register in Mode::on_activate so their ActionHandlerRegistration token drops with the mode’s Guard. See feedback_effect_vocabulary_is_host_boundary.

Fields

action_name: &'static str

Canonical command name (e.g. "action:snippet-expand"). The host resolves this to a CommandId via the command registry at registration time.

handler: ActionHandler

The handler closure registered for action_name.

Trait Implementations

impl Clone for ActionHandlerContribution

fn clone(&self) -> ActionHandlerContribution

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ActionHandlerContribution

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

Formats the value using the given formatter.