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Diffstat (limited to 'src/new_fields/List.ts')
| -rw-r--r-- | src/new_fields/List.ts | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/src/new_fields/List.ts b/src/new_fields/List.ts new file mode 100644 index 000000000..96018dafa --- /dev/null +++ b/src/new_fields/List.ts @@ -0,0 +1,240 @@ +import { Deserializable, autoObject } from "../client/util/SerializationHelper"; +import { Field, Update, Self, FieldResult } from "./Doc"; +import { setter, getter, deleteProperty } from "./util"; +import { serializable, alias, list } from "serializr"; +import { observable, action } from "mobx"; +import { ObjectField, OnUpdate, Copy } from "./ObjectField"; +import { RefField } from "./RefField"; +import { ProxyField } from "./Proxy"; + +const listHandlers: any = { + /// Mutator methods + copyWithin() { + throw new Error("copyWithin not supported yet"); + }, + fill(value: any, start?: number, end?: number) { + if (value instanceof RefField) { + throw new Error("fill with RefFields not supported yet"); + } + const res = this[Self].__fields.fill(value, start, end); + this[Update](); + return res; + }, + pop(): any { + const field = toRealField(this[Self].__fields.pop()); + this[Update](); + return field; + }, + push: action(function (this: any, ...items: any[]) { + items = items.map(toObjectField); + const res = this[Self].__fields.push(...items); + this[Update](); + return res; + }), + reverse() { + const res = this[Self].__fields.reverse(); + this[Update](); + return res; + }, + shift() { + const res = toRealField(this[Self].__fields.shift()); + this[Update](); + return res; + }, + sort(cmpFunc: any) { + const res = this[Self].__fields.sort(cmpFunc ? (first: any, second: any) => cmpFunc(toRealField(first), toRealField(second)) : undefined); + this[Update](); + return res; + }, + splice: action(function (this: any, start: number, deleteCount: number, ...items: any[]) { + items = items.map(toObjectField); + const res = this[Self].__fields.splice(start, deleteCount, ...items); + this[Update](); + return res.map(toRealField); + }), + unshift(...items: any[]) { + items = items.map(toObjectField); + const res = this[Self].__fields.unshift(...items); + this[Update](); + return res; + + }, + /// Accessor methods + concat: action(function (this: any, ...items: any[]) { + return this[Self].__fields.map(toRealField).concat(...items); + }), + includes(valueToFind: any, fromIndex: number) { + const fields = this[Self].__fields; + if (valueToFind instanceof RefField) { + return fields.map(toRealField).includes(valueToFind, fromIndex); + } else { + return fields.includes(valueToFind, fromIndex); + } + }, + indexOf(valueToFind: any, fromIndex: number) { + const fields = this[Self].__fields; + if (valueToFind instanceof RefField) { + return fields.map(toRealField).indexOf(valueToFind, fromIndex); + } else { + return fields.indexOf(valueToFind, fromIndex); + } + }, + join(separator: any) { + return this[Self].__fields.map(toRealField).join(separator); + }, + lastIndexOf(valueToFind: any, fromIndex: number) { + const fields = this[Self].__fields; + if (valueToFind instanceof RefField) { + return fields.map(toRealField).lastIndexOf(valueToFind, fromIndex); + } else { + return fields.lastIndexOf(valueToFind, fromIndex); + } + }, + slice(begin: number, end: number) { + return this[Self].__fields.slice(begin, end).map(toRealField); + }, + + /// Iteration methods + entries() { + return this[Self].__fields.map(toRealField).entries(); + }, + every(callback: any, thisArg: any) { + return this[Self].__fields.map(toRealField).every(callback, thisArg); + // TODO This is probably more efficient, but technically the callback can take the array, which would mean we would have to map the actual array anyway. + // If we don't want to support the array parameter, we should use this version instead + // return this[Self].__fields.every((element:any, index:number, array:any) => callback(toRealField(element), index, array), thisArg); + }, + filter(callback: any, thisArg: any) { + return this[Self].__fields.map(toRealField).filter(callback, thisArg); + // TODO This is probably more efficient, but technically the callback can take the array, which would mean we would have to map the actual array anyway. + // If we don't want to support the array parameter, we should use this version instead + // return this[Self].__fields.filter((element:any, index:number, array:any) => callback(toRealField(element), index, array), thisArg); + }, + find(callback: any, thisArg: any) { + return this[Self].__fields.map(toRealField).find(callback, thisArg); + // TODO This is probably more efficient, but technically the callback can take the array, which would mean we would have to map the actual array anyway. + // If we don't want to support the array parameter, we should use this version instead + // return this[Self].__fields.find((element:any, index:number, array:any) => callback(toRealField(element), index, array), thisArg); + }, + findIndex(callback: any, thisArg: any) { + return this[Self].__fields.map(toRealField).findIndex(callback, thisArg); + // TODO This is probably more efficient, but technically the callback can take the array, which would mean we would have to map the actual array anyway. + // If we don't want to support the array parameter, we should use this version instead + // return this[Self].__fields.findIndex((element:any, index:number, array:any) => callback(toRealField(element), index, array), thisArg); + }, + forEach(callback: any, thisArg: any) { + return this[Self].__fields.map(toRealField).forEach(callback, thisArg); + // TODO This is probably more efficient, but technically the callback can take the array, which would mean we would have to map the actual array anyway. + // If we don't want to support the array parameter, we should use this version instead + // return this[Self].__fields.forEach((element:any, index:number, array:any) => callback(toRealField(element), index, array), thisArg); + }, + map(callback: any, thisArg: any) { + return this[Self].__fields.map(toRealField).map(callback, thisArg); + // TODO This is probably more efficient, but technically the callback can take the array, which would mean we would have to map the actual array anyway. + // If we don't want to support the array parameter, we should use this version instead + // return this[Self].__fields.map((element:any, index:number, array:any) => callback(toRealField(element), index, array), thisArg); + }, + reduce(callback: any, initialValue: any) { + return this[Self].__fields.map(toRealField).reduce(callback, initialValue); + // TODO This is probably more efficient, but technically the callback can take the array, which would mean we would have to map the actual array anyway. + // If we don't want to support the array parameter, we should use this version instead + // return this[Self].__fields.reduce((acc:any, element:any, index:number, array:any) => callback(acc, toRealField(element), index, array), initialValue); + }, + reduceRight(callback: any, initialValue: any) { + return this[Self].__fields.map(toRealField).reduceRight(callback, initialValue); + // TODO This is probably more efficient, but technically the callback can take the array, which would mean we would have to map the actual array anyway. + // If we don't want to support the array parameter, we should use this version instead + // return this[Self].__fields.reduceRight((acc:any, element:any, index:number, array:any) => callback(acc, toRealField(element), index, array), initialValue); + }, + some(callback: any, thisArg: any) { + return this[Self].__fields.map(toRealField).some(callback, thisArg); + // TODO This is probably more efficient, but technically the callback can take the array, which would mean we would have to map the actual array anyway. + // If we don't want to support the array parameter, we should use this version instead + // return this[Self].__fields.some((element:any, index:number, array:any) => callback(toRealField(element), index, array), thisArg); + }, + values() { + return this[Self].__fields.map(toRealField).values(); + }, + [Symbol.iterator]() { + return this[Self].__fields.map(toRealField).values(); + } +}; + +function toObjectField(field: Field) { + return field instanceof RefField ? new ProxyField(field) : field; +} + +function toRealField(field: Field) { + return field instanceof ProxyField ? field.value() : field; +} + +function listGetter(target: any, prop: string | number | symbol, receiver: any): any { + if (listHandlers.hasOwnProperty(prop)) { + return listHandlers[prop]; + } + return getter(target, prop, receiver); +} + +interface ListSpliceUpdate<T> { + type: "splice"; + index: number; + added: T[]; + removedCount: number; +} + +interface ListIndexUpdate<T> { + type: "update"; + index: number; + newValue: T; +} + +type ListUpdate<T> = ListSpliceUpdate<T> | ListIndexUpdate<T>; + +type StoredType<T extends Field> = T extends RefField ? ProxyField<T> : T; + +@Deserializable("list") +class ListImpl<T extends Field> extends ObjectField { + constructor(fields: T[] = []) { + super(); + const list = new Proxy<this>(this, { + set: setter, + get: listGetter, + deleteProperty: deleteProperty, + defineProperty: () => { throw new Error("Currently properties can't be defined on documents using Object.defineProperty"); }, + }); + (list as any).push(...fields); + return list; + } + + [key: number]: FieldResult<T>; + + @serializable(alias("fields", list(autoObject()))) + private get __fields() { + return this.___fields; + } + + private set __fields(value) { + this.___fields = value; + } + + [Copy]() { + let copiedData = this[Self].__fields.map(f => f instanceof ObjectField ? f[Copy]() : f); + let deepCopy = new ListImpl<T>(copiedData as any); + return deepCopy; + } + + // @serializable(alias("fields", list(autoObject()))) + @observable + private ___fields: StoredType<T>[] = []; + + private [Update] = (diff: any) => { + // console.log(diff); + const update = this[OnUpdate]; + // update && update(diff); + update && update(); + } + + private [Self] = this; +} +export type List<T extends Field> = ListImpl<T> & T[]; +export const List: { new <T extends Field>(fields?: T[]): List<T> } = ListImpl as any;
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