mystiq/hydrogen-web
Archived
4
1
Fork 1
Code Issues Pull requests Projects Releases Packages Wiki Activity

Add type annotations to BaseMappedList

Browse source
This commit is contained in:
Danila Fedorin 2021-09-29 18:41:30 -07:00
parent 99164eb0d8
commit c80dfb10a2
1 changed files with 28 additions and 20 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

48
src/observable/list/BaseMappedList.ts
View file

@ -18,60 +18,68 @@ limitations under the License.
import {BaseObservableList} from "./BaseObservableList";
import {findAndUpdateInArray} from "./common";
export class BaseMappedList extends BaseObservableList {
constructor(sourceList, mapper, updater, removeCallback) {
export type Mapper<F,T> = (value: F) => T
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();
this._sourceList = sourceList;
this._mapper = mapper;
this._updater = updater;
this._removeCallback = removeCallback;
this._mappedValues = null;
this._sourceUnsubscribe = null;
}
findAndUpdate(predicate, updater) {
return findAndUpdateInArray(predicate, this._mappedValues, this, updater);
findAndUpdate(predicate: (value: T) => boolean, updater: (value: T) => any | false) {
return findAndUpdateInArray(predicate, this._mappedValues!, this, updater);
}
get length() {
return this._mappedValues.length;
return this._mappedValues!.length;
}
[Symbol.iterator]() {
return this._mappedValues.values();
return this._mappedValues!.values();
}
}
export function runAdd(list, index, mappedValue) {
list._mappedValues.splice(index, 0, mappedValue);
export function runAdd<F,T>(list: BaseMappedList<F,T>, index: number, mappedValue: T): void {
list._mappedValues!.splice(index, 0, mappedValue);
list.emitAdd(index, mappedValue);
}
export function runUpdate(list, index, value, params) {
const mappedValue = list._mappedValues[index];
export function runUpdate<F,T>(list: BaseMappedList<F,T>, index: number, value: F, params: any): void {
const mappedValue = list._mappedValues![index];
if (list._updater) {
list._updater(mappedValue, params, value);
}
list.emitUpdate(index, mappedValue, params);
}
export function runRemove(list, index) {
const mappedValue = list._mappedValues[index];
list._mappedValues.splice(index, 1);
export function runRemove<F,T>(list: BaseMappedList<F,T>, index: number): void {
const mappedValue = list._mappedValues![index];
list._mappedValues!.splice(index, 1);
if (list._removeCallback) {
list._removeCallback(mappedValue);
}
list.emitRemove(index, mappedValue);
}
export function runMove(list, fromIdx, toIdx) {
const mappedValue = list._mappedValues[fromIdx];
list._mappedValues.splice(fromIdx, 1);
list._mappedValues.splice(toIdx, 0, mappedValue);
export function runMove<F,T>(list: BaseMappedList<F,T>, fromIdx: number, toIdx: number): void {
const mappedValue = list._mappedValues![fromIdx];
list._mappedValues!.splice(fromIdx, 1);
list._mappedValues!.splice(toIdx, 0, mappedValue);
list.emitMove(fromIdx, toIdx, mappedValue);
}
export function runReset(list) {
export function runReset<F,T>(list: BaseMappedList<F,T>): void {
list._mappedValues = [];
list.emitReset();
}