src/buttons/AbstractZoomButton.js
/**
   * @summary Handles click events
   * @description Zooms in and register long press timer
   * @private
   */
@summary Handles click events
@description Zooms in and register long press timer
@private
@summary Handles click events @description Zooms in and register long press timer @private
__onMouseDown() {
    if (!this.prop.enabled) {
      return;
    }
    this.prop.buttondown = true;
    this.prop.longPressTimeout = setTimeout(() => this.__startLongPressInterval(), 100);
  }
__onMouseDown ( ) { if ( ! this . prop . enabled ) { return ; } this . prop . buttondown = true ; this . prop . longPressTimeout = setTimeout ( ( ) => this . __startLongPressInterval ( ) , 100 ) ; }
@summary Handles click events
 @description Zooms in and register long press timer
 @private
@summary Handles click events @description Zooms in and register long press timer @private