## FloatingButton(buttonClass, tooltip, clickEvent, appInstance)

FloatingButton represents a button that is used in the floating menu in the right bottom corner of the application. It may have a custom tooltip and callback on the click event

#### new FloatingButton(buttonClass, tooltip, clickEvent, appInstance)
`modules/ui/FloatingMenu.js`, `line 7`

  ##### Parameters:

  Name | Type | Description
  --- | --- | ---
  `buttonClass` | string | Custom string that identifies the SVG icon used on this button. This string is also added as a CSS class to the button.
  `tooltip` | string | tooltip for the button, that will be displayed on hover and also used as alternative title for the image
  `clickEvent` | function | custom callback when user clicks the button
  `appInstance` | App | reference to the parent SVG element

### Members

#### $el :jQuery.element
`modules/ui/FloatingMenu.js`, `line 19`

  jQuery element representing the button

#### $tooltip :jQuery.element
`modules/ui/FloatingMenu.js`, `line 38`

  jQuery element representing the tooltip