improve staking interface methods (#14023)

* improve staking interface methods

* fix

* fix

* fix build

* restart

* fix

---------

Co-authored-by: parity-processbot <>

substrate/frame/staking/src/lib.rs

@@ -311,6 +311,7 @@ use sp_runtime::{
 	traits::{AtLeast32BitUnsigned, Convert, Saturating, StaticLookup, Zero},
 	Perbill, Perquintill, Rounding, RuntimeDebug,
 };
+pub use sp_staking::StakerStatus;
 use sp_staking::{
 	offence::{Offence, OffenceError, ReportOffence},
 	EraIndex, SessionIndex,
@@ -381,18 +382,6 @@ impl<AccountId: Ord> Default for EraRewardPoints<AccountId> {
 	}
 }
 
-/// Indicates the initial status of the staker.
-#[derive(RuntimeDebug, TypeInfo)]
-#[cfg_attr(feature = "std", derive(serde::Serialize, serde::Deserialize, Clone))]
-pub enum StakerStatus<AccountId> {
-	/// Chilling.
-	Idle,
-	/// Declared desire in validating or already participating in it.
-	Validator,
-	/// Nominating for a group of other stakers.
-	Nominator(Vec<AccountId>),
-}
-
 /// A destination account for payment.
 #[derive(PartialEq, Eq, Copy, Clone, Encode, Decode, RuntimeDebug, TypeInfo, MaxEncodedLen)]
 pub enum RewardDestination<AccountId> {