Method ngOnDestroy

src/material/tooltip/tooltip.ts:428–448

* Dispose the tooltip when destroyed.

()

   * Dispose the tooltip when destroyed.
   */
  ngOnDestroy() {
    const nativeElement = this._elementRef.nativeElement;

    // Optimization: Do not call clearTimeout unless there is an active timer.
    if (this._touchstartTimeout) {
      clearTimeout(this._touchstartTimeout);
    }

    if (this._overlayRef) {
      this._overlayRef.dispose();
      this._tooltipInstance = null;
    }

    this._eventCleanups.forEach(cleanup => cleanup());
    this._eventCleanups.length = 0;
    this._destroyed.next();
    this._destroyed.complete();
    this._isDestroyed = true;
    this._ariaDescriber.removeDescription(nativeElement, this.message, 'tooltip');
    this._focusMonitor.stopMonitoring(nativeElement);
  }

  /** Shows the tooltip after the delay in ms, defaults to tooltip-delay-show or 0ms if no input */
  show(delay: number = this.showDelay, origin?: {x: number; y: number}): void {