addEvent(actions) {
    const registerIcon = this._registerIconHandler.bind(this);
    const addIcon = this._addIconHandler.bind(this);

    this.eventHandler = {
      registerIcon,
      addIcon,
    };

    this.actions = actions;
    this._els.iconColorpicker.on('change', this._changeColorHandler.bind(this));
    this._els.registerIconButton.addEventListener('change', registerIcon);
    this._els.addIconButton.addEventListener('click', addIcon);

    this.colorPickerInputBox.addEventListener(
      eventNames.FOCUS,
      this._onStartEditingInputBox.bind(this)
    );
    this.colorPickerInputBox.addEventListener(
      eventNames.BLUR,
      this._onStopEditingInputBox.bind(this)
    );
  }
Add event for icon
@param {Object} actions - actions for icon
  @param {Function} actions.registerCustomIcon - register icon
  @param {Function} actions.addIcon - add icon
  @param {Function} actions.changeColor - change icon color