Class UndoService

Hierarchy

UndoService

Index

Constructors

Properties

Methods

detectChange watcherAction watcherState

Constructors

constructor

new UndoService(stateWatchMap): UndoService
Constructs a new instance of the UndoService class.
Parameters
- stateWatchMap: StateWatchMap
  
  The state watch map containing the initial settings.
Returns UndoService
- Defined in services/undo.service.ts:46

Properties

`Protected` watchStateMap

watchStateMap: {
[key: string]: NgUndoStateActions;
} = {}

Represents a mapping of state watch settings.

Type declaration

[key: string]: NgUndoStateActions

Methods

`Protected` detectChange

detectChange(action, state, newState): any
Protected
Detects changes in the state and inserts snapshots into the undo history when necessary.
Parameters
- action: any
  
  The dispatched action object.
- state: any
  
  The current state object.
- newState: any
  
  The updated state object.
Returns any
- The updated state with inserted snapshots.
- Defined in services/undo.service.ts:117

`Protected` watcherAction

watcherAction(state, action): any
Protected
Watches the dispatched undo action and applies the corresponding undo operation on the state.
Parameters
- state: any
  
  The current state object.
- action: NgUndoAction
  
  The dispatched undo action object.
Returns any
- The updated state after applying the undo action.
- Defined in services/undo.service.ts:81

watcherState

watcherState(state, action, next): any
Middleware function for watching state changes and triggering undo actions.
Parameters
- state: any
  
  The current state object.
- action: any
  
  The dispatched action object.
- next: NextMiddleware<AnyAction>
  
  The next middleware function.
Returns any
- The updated state after applying undo actions.
- Defined in services/undo.service.ts:64

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