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import { Utils } from "../Utils";
import { Types } from "../server/Message";
import { computed } from "mobx";
export function Cast<T extends Field>(field: FieldValue<Field>, ctor: { new(): T }): Opt<T> {
if (field) {
if (ctor && field instanceof ctor) {
return field;
}
}
return undefined;
}
export const FieldWaiting: FIELD_WAITING = "<Waiting>";
export type FIELD_WAITING = "<Waiting>";
export type FieldId = string;
export type Opt<T> = T | undefined;
export type FieldValue<T> = Opt<T> | FIELD_WAITING;
export abstract class Field {
//FieldUpdated: TypedEvent<Opt<FieldUpdatedArgs>> = new TypedEvent<Opt<FieldUpdatedArgs>>();
init(callback: (res: Field) => any) {
callback(this);
}
private id: FieldId;
@computed
get Id(): FieldId {
return this.id;
}
constructor(id: Opt<FieldId> = undefined) {
this.id = id || Utils.GenerateGuid();
}
Dereference(): FieldValue<Field> {
return this;
}
DereferenceToRoot(): FieldValue<Field> {
return this;
}
DereferenceT<T extends Field = Field>(ctor: { new(): T }): FieldValue<T> {
return Cast(this.Dereference(), ctor);
}
DereferenceToRootT<T extends Field = Field>(ctor: { new(): T }): FieldValue<T> {
return Cast(this.DereferenceToRoot(), ctor);
}
Equals(other: Field): boolean {
return this.id === other.id;
}
abstract UpdateFromServer(serverData: any): void;
abstract ToScriptString(): string;
abstract TrySetValue(value: any): boolean;
abstract GetValue(): any;
abstract Copy(): Field;
abstract ToJson(): { _id: string, type: Types, data: any }
}
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