Method constructor

src/dev-app/dev-app/dev-app-layout.ts:141–159

()

  readonly isZoneless = this._ngZone instanceof ɵNoopNgZone;

  constructor() {
    this.testMode = this._route.queryParams.pipe(map(params => params['testonly'] === 'true'));
    this.toggleTheme(this.state.darkTheme);
    this.toggleSystemTheme(this.state.systemTheme);
    this.toggleStrongFocus(this.state.strongFocusEnabled);
    this.toggleDensity(Math.max(this._densityScales.indexOf(this.state.density), 0));
    this.toggleRippleDisabled(this.state.rippleDisabled);
    this.toggleDirection(this.state.direction);
    this.toggleM3(this.state.m3Enabled);
    this.toggleColorApiBackCompat(this.state.colorApiBackCompat);

    this.testMode.subscribe(isTestOnly => {
      if (isTestOnly) {
        this.toggleM3(true);
        this.toggleSystemTheme(true);
        this._document.body.classList.add('demo-testonly-mode');
      }
    });
  }

  toggleTheme(value = !this.state.darkTheme) {
    this.state.darkTheme = value;