Class HaQrScanner

src/components/ha-qr-scanner.ts:37–412

});

@customElement("ha-qr-scanner")
class HaQrScanner extends LitElement {
  @state()
  @consumeLocalize()
  private _localize!: LocalizeFunc;

  @state()
  @consume({ context: configContext, subscribe: true })
  private _config!: ContextType<typeof configContext>;

  @property() public description?: string;

  @property({ attribute: "alternative_option_label" })
  public alternativeOptionLabel?: string;

  @property({ attribute: false }) public validate?: (
    value: string
  ) => string | undefined;

  @state() private _cameras?: QrScanner.Camera[];

  @state() private _loading = true;

  @state() private _error?: string;

  @state() private _warning?: string;

  @state() private _selectedCamera?: string;

  private _qrScanner?: QrScanner;

  private _qrNotFoundCount = 0;

  private _removeListener?: UnsubscribeFunc;

  @query("video", true) private _video?: HTMLVideoElement;

  @query("#canvas-container", true) private _canvasContainer?: HTMLDivElement;

  @query("ha-input") private _manualInput?: HaInput;

  public disconnectedCallback(): void {
    super.disconnectedCallback();
    this._qrNotFoundCount = 0;
    if (this._nativeBarcodeScanner) {
      this._closeExternalScanner();
    }
    if (this._qrScanner) {
      this._qrScanner.stop();
      this._qrScanner.destroy();
      this._qrScanner = undefined;
    }
    while (this._canvasContainer?.lastChild) {
      this._canvasContainer.removeChild(this._canvasContainer.lastChild);
    }
  }

  public connectedCallback(): void {