Trait SettingActionHandler 

pub trait SettingActionHandler<Action: Copy> {
    // Required methods
    fn can_apply(&self, action: Action) -> bool;
    fn apply(&mut self, action: Action);
}

Traits for app-defined settings handlers and request messages.

Required Methods

fn can_apply(&self, action: Action) -> bool

fn apply(&mut self, action: Action)

Implementors