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Class: abstract PageStateManager<S>

Defined in: packages/core/src/page/state/PageStateManager.ts:6

Manager of the current page state and state history.

Extended by​

Type Parameters​

• S extends PageState = {}

Constructors​

new PageStateManager()​

new PageStateManager<S>(): PageStateManager<S>

Returns​

PageStateManager<S>

Properties​

onChange()?​

optional onChange: (newState) => void

Defined in: packages/core/src/page/state/PageStateManager.ts:7

Parameters​

newState​

S

Returns​

void

Methods​

beginTransaction()​

beginTransaction(): void

Defined in: packages/core/src/page/state/PageStateManager.ts:64

Starts queueing state patches off the main state. While the transaction is active every setState call has no effect on the current state.

Note that call to getState after the transaction has begun will return state as it was before the transaction.

Returns​

void

cancelTransaction()​

cancelTransaction(): void

Defined in: packages/core/src/page/state/PageStateManager.ts:79

Cancels ongoing transaction. Uncommitted state changes are lost.

Returns​

void

clear()​

clear(): void

Defined in: packages/core/src/page/state/PageStateManager.ts:12

Clears the state history.

Returns​

void

commitTransaction()​

commitTransaction(): void

Defined in: packages/core/src/page/state/PageStateManager.ts:72

Applies queued state patches to the main state. All patches are squashed and applied with one setState call.

Returns​

void

getAllStates()​

getAllStates(): S[]

Defined in: packages/core/src/page/state/PageStateManager.ts:44

Returns the recorded history of page states. The states will be chronologically sorted from the oldest to the newest.

Note that the implementation may limit the size of the recorded history, therefore the complete history may not be available.

Returns​

S[]

The recorded history of page states.

getState()​

getState(): S

Defined in: packages/core/src/page/state/PageStateManager.ts:31

Returns the current page state.

Returns​

S

The current page state.

getTransactionStatePatches()​

getTransactionStatePatches(): (null | S | Pick<S, any>)[]

Defined in: packages/core/src/page/state/PageStateManager.ts:53

Returns queueing state patches off the main state from the begin of transaction.

Returns​

(null | S | Pick<S, any>)[]

State patches from the begin of transaction.

setState()​

setState<K>(patchState): void

Defined in: packages/core/src/page/state/PageStateManager.ts:22

Sets a new page state by applying the provided patch to the current state.

Type Parameters​

• K extends string | number | symbol

Parameters​

patchState​

null | S | Pick<S, K>

Returns​

void