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Add type annotations to BaseMappedList

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Danila Fedorin 2021-09-29 18:41:30 -07:00
parent 99164eb0d8
commit c80dfb10a2
1 changed files with 28 additions and 20 deletions
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48
src/observable/list/BaseMappedList.ts
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@ -18,60 +18,68 @@ limitations under the License.
import {BaseObservableList} from "./BaseObservableList"; import {BaseObservableList} from "./BaseObservableList";
import {findAndUpdateInArray} from "./common"; import {findAndUpdateInArray} from "./common";
export class BaseMappedList extends BaseObservableList { export type Mapper<F,T> = (value: F) => T
constructor(sourceList, mapper, updater, removeCallback) { export type Updater<F,T> = (mappedValue: T, params: any, value: F) => void;
export class BaseMappedList<F,T> extends BaseObservableList<T> {
protected _sourceList: BaseObservableList<F>;
protected _sourceUnsubscribe: (() => void) | null = null;
_mapper: Mapper<F,T>;
_updater: Updater<F,T>;
_removeCallback: ((value: T) => void) | null;
_mappedValues: T[] | null = null;
constructor(sourceList: BaseObservableList<F>, mapper: Mapper<F,T>, updater: Updater<F,T>, removeCallback: ((value: T) => void) | null = null) {
super(); super();
this._sourceList = sourceList; this._sourceList = sourceList;
this._mapper = mapper; this._mapper = mapper;
this._updater = updater; this._updater = updater;
this._removeCallback = removeCallback; this._removeCallback = removeCallback;
this._mappedValues = null;
this._sourceUnsubscribe = null;
} }
findAndUpdate(predicate, updater) { findAndUpdate(predicate: (value: T) => boolean, updater: (value: T) => any | false) {
return findAndUpdateInArray(predicate, this._mappedValues, this, updater); return findAndUpdateInArray(predicate, this._mappedValues!, this, updater);
} }
get length() { get length() {
return this._mappedValues.length; return this._mappedValues!.length;
} }
[Symbol.iterator]() { [Symbol.iterator]() {
return this._mappedValues.values(); return this._mappedValues!.values();
} }
} }
export function runAdd(list, index, mappedValue) { export function runAdd<F,T>(list: BaseMappedList<F,T>, 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(list, index, value, params) { export function runUpdate<F,T>(list: BaseMappedList<F,T>, 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);
} }
list.emitUpdate(index, mappedValue, params); list.emitUpdate(index, mappedValue, params);
} }
export function runRemove(list, index) { export function runRemove<F,T>(list: BaseMappedList<F,T>, 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) {
list._removeCallback(mappedValue); list._removeCallback(mappedValue);
} }
list.emitRemove(index, mappedValue); list.emitRemove(index, mappedValue);
} }
export function runMove(list, fromIdx, toIdx) { export function runMove<F,T>(list: BaseMappedList<F,T>, 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(list) { export function runReset<F,T>(list: BaseMappedList<F,T>): void {
list._mappedValues = []; list._mappedValues = [];
list.emitReset(); list.emitReset();
} }