@ngrx/store
Version:
RxJS powered Redux for Angular apps
89 lines • 12.1 kB
JavaScript
import { Inject, Injectable } from '@angular/core';
import { BehaviorSubject, Observable } from 'rxjs';
import { ActionsSubject } from './actions_subject';
import { INITIAL_REDUCERS, INITIAL_STATE, REDUCER_FACTORY } from './tokens';
import { createFeatureReducerFactory, createReducerFactory, omit, } from './utils';
import * as i0 from "@angular/core";
export class ReducerObservable extends Observable {
}
export class ReducerManagerDispatcher extends ActionsSubject {
}
export const UPDATE = '@ngrx/store/update-reducers';
class ReducerManager extends BehaviorSubject {
get currentReducers() {
return this.reducers;
}
constructor(dispatcher, initialState, reducers, reducerFactory) {
super(reducerFactory(reducers, initialState));
this.dispatcher = dispatcher;
this.initialState = initialState;
this.reducers = reducers;
this.reducerFactory = reducerFactory;
}
addFeature(feature) {
this.addFeatures([feature]);
}
addFeatures(features) {
const reducers = features.reduce((reducerDict, { reducers, reducerFactory, metaReducers, initialState, key }) => {
const reducer = typeof reducers === 'function'
? createFeatureReducerFactory(metaReducers)(reducers, initialState)
: createReducerFactory(reducerFactory, metaReducers)(reducers, initialState);
reducerDict[key] = reducer;
return reducerDict;
}, {});
this.addReducers(reducers);
}
removeFeature(feature) {
this.removeFeatures([feature]);
}
removeFeatures(features) {
this.removeReducers(features.map((p) => p.key));
}
addReducer(key, reducer) {
this.addReducers({ [key]: reducer });
}
addReducers(reducers) {
this.reducers = { ...this.reducers, ...reducers };
this.updateReducers(Object.keys(reducers));
}
removeReducer(featureKey) {
this.removeReducers([featureKey]);
}
removeReducers(featureKeys) {
featureKeys.forEach((key) => {
this.reducers = omit(this.reducers, key) /*TODO(#823)*/;
});
this.updateReducers(featureKeys);
}
updateReducers(featureKeys) {
this.next(this.reducerFactory(this.reducers, this.initialState));
this.dispatcher.next({
type: UPDATE,
features: featureKeys,
});
}
ngOnDestroy() {
this.complete();
}
/** @nocollapse */ static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: ReducerManager, deps: [{ token: ReducerManagerDispatcher }, { token: INITIAL_STATE }, { token: INITIAL_REDUCERS }, { token: REDUCER_FACTORY }], target: i0.ɵɵFactoryTarget.Injectable }); }
/** @nocollapse */ static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: ReducerManager }); }
}
export { ReducerManager };
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.0", ngImport: i0, type: ReducerManager, decorators: [{
type: Injectable
}], ctorParameters: function () { return [{ type: ReducerManagerDispatcher }, { type: undefined, decorators: [{
type: Inject,
args: [INITIAL_STATE]
}] }, { type: undefined, decorators: [{
type: Inject,
args: [INITIAL_REDUCERS]
}] }, { type: undefined, decorators: [{
type: Inject,
args: [REDUCER_FACTORY]
}] }]; } });
export const REDUCER_MANAGER_PROVIDERS = [
ReducerManager,
{ provide: ReducerObservable, useExisting: ReducerManager },
{ provide: ReducerManagerDispatcher, useExisting: ActionsSubject },
];
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createFeatureReducerFactory(metaReducers)(reducers, initialState)\n            : createReducerFactory(reducerFactory, metaReducers)(\n                reducers,\n                initialState\n              );\n\n        reducerDict[key] = reducer;\n        return reducerDict;\n      },\n      {} as { [key: string]: ActionReducer<any, any> }\n    );\n\n    this.addReducers(reducers);\n  }\n\n  removeFeature(feature: StoreFeature<any, any>) {\n    this.removeFeatures([feature]);\n  }\n\n  removeFeatures(features: StoreFeature<any, any>[]) {\n    this.removeReducers(features.map((p) => p.key));\n  }\n\n  addReducer(key: string, reducer: ActionReducer<any, any>) {\n    this.addReducers({ [key]: reducer });\n  }\n\n  addReducers(reducers: { [key: string]: ActionReducer<any, any> }) {\n    this.reducers = { ...this.reducers, ...reducers };\n    this.updateReducers(Object.keys(reducers));\n  }\n\n  removeReducer(featureKey: string) {\n    this.removeReducers([featureKey]);\n  }\n\n  removeReducers(featureKeys: string[]) {\n    featureKeys.forEach((key) => {\n      this.reducers = omit(this.reducers, key) /*TODO(#823)*/ as any;\n    });\n    this.updateReducers(featureKeys);\n  }\n\n  private updateReducers(featureKeys: string[]) {\n    this.next(this.reducerFactory(this.reducers, this.initialState));\n    this.dispatcher.next(<Action>{\n      type: UPDATE,\n      features: featureKeys,\n    });\n  }\n\n  ngOnDestroy() {\n    this.complete();\n  }\n}\n\nexport const REDUCER_MANAGER_PROVIDERS: Provider[] = [\n  ReducerManager,\n  { provide: ReducerObservable, useExisting: ReducerManager },\n  { provide: ReducerManagerDispatcher, useExisting: ActionsSubject },\n];\n"]}