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Generalize BaseMappedList to allow mappers to promises

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This commit is contained in:
Danila Fedorin 2021-09-29 19:11:19 -07:00
parent e6de873b6e
commit 0e6c59983f
1 changed files with 8 additions and 8 deletions
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16
src/observable/list/BaseMappedList.ts
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@ -21,15 +21,15 @@ import {findAndUpdateInArray} from "./common";
export type Mapper<F,T> = (value: F) => T export type Mapper<F,T> = (value: F) => T
export type Updater<F,T> = (mappedValue: T, params: any, value: F) => void; export type Updater<F,T> = (mappedValue: T, params: any, value: F) => void;
export class BaseMappedList<F,T> extends BaseObservableList<T> { export class BaseMappedList<F,T,R = T> extends BaseObservableList<T> {
protected _sourceList: BaseObservableList<F>; protected _sourceList: BaseObservableList<F>;
protected _sourceUnsubscribe: (() => void) | null = null; protected _sourceUnsubscribe: (() => void) | null = null;
_mapper: Mapper<F,T>; _mapper: Mapper<F,R>;
_updater: Updater<F,T>; _updater: Updater<F,T>;
_removeCallback?: (value: T) => void; _removeCallback?: (value: T) => void;
_mappedValues: T[] | null = null; _mappedValues: T[] | null = null;
constructor(sourceList: BaseObservableList<F>, mapper: Mapper<F,T>, updater: Updater<F,T>, removeCallback?: (value: T) => void) { constructor(sourceList: BaseObservableList<F>, mapper: Mapper<F,R>, updater: Updater<F,T>, removeCallback?: (value: T) => void) {
super(); super();
this._sourceList = sourceList; this._sourceList = sourceList;
this._mapper = mapper; this._mapper = mapper;
@ -50,12 +50,12 @@ export class BaseMappedList<F,T> extends BaseObservableList<T> {
} }
} }
export function runAdd<F,T>(list: BaseMappedList<F,T>, index: number, mappedValue: T): void { export function runAdd<F,T,R>(list: BaseMappedList<F,T,R>, index: number, mappedValue: T): void {
list._mappedValues!.splice(index, 0, mappedValue); list._mappedValues!.splice(index, 0, mappedValue);
list.emitAdd(index, mappedValue); list.emitAdd(index, mappedValue);
} }
export function runUpdate<F,T>(list: BaseMappedList<F,T>, index: number, value: F, params: any): void { export function runUpdate<F,T,R>(list: BaseMappedList<F,T,R>, index: number, value: F, params: any): void {
const mappedValue = list._mappedValues![index]; const mappedValue = list._mappedValues![index];
if (list._updater) { if (list._updater) {
list._updater(mappedValue, params, value); list._updater(mappedValue, params, value);
@ -63,7 +63,7 @@ export function runUpdate<F,T>(list: BaseMappedList<F,T>, index: number, value:
list.emitUpdate(index, mappedValue, params); list.emitUpdate(index, mappedValue, params);
} }
export function runRemove<F,T>(list: BaseMappedList<F,T>, index: number): void { export function runRemove<F,T,R>(list: BaseMappedList<F,T,R>, index: number): void {
const mappedValue = list._mappedValues![index]; const mappedValue = list._mappedValues![index];
list._mappedValues!.splice(index, 1); list._mappedValues!.splice(index, 1);
if (list._removeCallback) { if (list._removeCallback) {
@ -72,14 +72,14 @@ export function runRemove<F,T>(list: BaseMappedList<F,T>, index: number): void {
list.emitRemove(index, mappedValue); list.emitRemove(index, mappedValue);
} }
export function runMove<F,T>(list: BaseMappedList<F,T>, fromIdx: number, toIdx: number): void { export function runMove<F,T,R>(list: BaseMappedList<F,T,R>, fromIdx: number, toIdx: number): void {
const mappedValue = list._mappedValues![fromIdx]; const mappedValue = list._mappedValues![fromIdx];
list._mappedValues!.splice(fromIdx, 1); list._mappedValues!.splice(fromIdx, 1);
list._mappedValues!.splice(toIdx, 0, mappedValue); list._mappedValues!.splice(toIdx, 0, mappedValue);
list.emitMove(fromIdx, toIdx, mappedValue); list.emitMove(fromIdx, toIdx, mappedValue);
} }
export function runReset<F,T>(list: BaseMappedList<F,T>): void { export function runReset<F,T,R>(list: BaseMappedList<F,T,R>): void {
list._mappedValues = []; list._mappedValues = [];
list.emitReset(); list.emitReset();
} }