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import { IActivationController, IActivatable, ICancellation } from "../interfaces";
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import { AsyncComponent } from "./AsyncComponent";
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import { Cancellation } from "../Cancellation";
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import { TraceSource } from "../log/TraceSource";
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type Constructor<T = {}> = new (...args: any[]) => T;
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const log = TraceSource.get("@implab/core/components/ActivatableMixin");
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export function ActivatableMixin<TBase extends Constructor<AsyncComponent>>(Base: TBase) {
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return class extends Base implements IActivatable {
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_controller: IActivationController | undefined;
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_active = false;
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isActive() {
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return this._active;
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}
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hasActivationController() {
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return !!this._controller;
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}
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getActivationController() {
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if (!this._controller)
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throw Error("Activation controller isn't set");
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return this._controller;
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}
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setActivationController(controller: IActivationController) {
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this._controller = controller;
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}
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async onActivating(ct: ICancellation) {
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if (this._controller)
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await this._controller.activating(this, ct);
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}
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async onActivated(ct: ICancellation) {
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if (this._controller)
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await this._controller.activated(this, ct);
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}
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activate(ct: ICancellation = Cancellation.none) {
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return this.runOperation(this._activateAsync.bind(this), ct);
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}
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async _activateAsync(ct: ICancellation) {
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if (this.isActive())
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return;
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await this.onActivating(ct);
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this._active = true;
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try {
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await this.onActivated(ct);
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} catch (e) {
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log.error("Suppressed onActivated error: {0}", e);
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}
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}
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async onDeactivating(ct: ICancellation) {
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if (this._controller)
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await this._controller.deactivating(this, ct);
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}
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async onDeactivated(ct: ICancellation) {
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if (this._controller)
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await this._controller.deactivated(this, ct);
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}
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deactivate(ct: ICancellation = Cancellation.none) {
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return this.runOperation(this._deactivateAsync.bind(this), ct);
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}
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async _deactivateAsync(ct: ICancellation) {
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if (!this.isActive())
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return;
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await this.onDeactivating(ct);
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this._active = false;
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try {
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await this.onDeactivated(ct);
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} catch (e) {
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log.error("Suppressed onDeactivated error: {0}", e);
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}
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}
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};
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}
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export const traceSource = log;
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