Combobox

Introduction

The combo box is dropdown with a typeahead behavior. This allows the user to either type a value or select a value from the list.

It needs a conclusive watermark which informs the user about the options to either start typing or to select an item from the dropdown. As the combobox is often used for a very long list of items (where it makes sense to allow typing in to refine the list), the watermark should also indicate what users can find in the dropdown list (e.g. favorites, often used, top items...).

Styleguide

Sizes and distances

x: 12px
y: 16px
z: 28px

Elements

font-family: Bernina Sans Regular
font-size: 12px
color: $gray-700
margin-bottom: 8px

font-family: Bernina Sans Regular
font-size: 14px
color: $gray-700

font-family: Bernina Sans Regular
font-size: 14px
color: $gray-300

height: 32px
width: depends on watermark
border-width: 1px //inside
border-color: $gray-300
border-radius: 3px (except of edges connected to item box)
background-color: #fff

height: 16px
width: 16px
icon color: $turquoise-600

max-height: 250px
border-width: 1px //inside
border-color: $gray-300
border-radius: 3px (except of edges connected to combobox)
width: same as combobox

Hover state

border-width: 1px //inside
border-color: $gray-400

background-color: $turquoise-100
height: 28px

Disabled state

background-color: $gray-130
border-width: 1px //inside
border-color: $gray-300
icon-color: $gray-300
text-color: $gray-300

Behavior

On click the dropdown opens a list of several items for the user to choose from and the cursor is placed in the input field.

As soon as users start typing the list is refined. Once an item is selected, the dropdown closes and the input field is updated accordingly.

Loading behavior

If there are a lot of items in the dropdown it often needs some time to load. The loading distractor indicates this action.