SearchBar_Stylesheet.yaml

A search bar: a rounded field with a placeholder.

The look of SearchBar (in Search). How component stylesheets work.

The stylesheet

# SearchBar: the look of each part of the component, by the part's id.
# A value in {{ }} is one of the component's parameters.
styles:
  - id: root
    style:
      width: "{{ width }}"
      height: 56
      background: surface_container_high
      corner_radius: "{{ corner_radius }}"
      elevation: level_3
      align_content: left
      padding:
        left: 4
        right: 4
        top: 0
        bottom: 0
  - id: field
    style:
      background: transparent
      flex: expand_horizontal

How it is tied to the component

SearchBar_Component.yaml holds the structure: the parts, each with an id. This file holds the look: each rule's id names a part, and its style is what that part looks like. When a view uses component: SearchBar, Tesserae fills in the parameters (a value like "{{ width }}" becomes the width the view passed), picks a branch of any if:, and puts each rule under the style the part already has, so a part's own style: always wins.

The parts

root (Container)

Field	Value	What it does
width	the width parameter	Pixels, auto (its content's size, or stretched), or a percentage of the parent such as 50%.
height	56	Pixels, auto (its content's size, or stretched), or a percentage of the parent such as 50%.
background	surface_container_high	Its fill: a theme role such as surface, #RRGGBB, any CSS colour, or a gradient such as linear-gradient(90deg, primary, tertiary).
corner_radius	the corner_radius parameter	Pixels, or a shape token (none to extra_large, or full for a pill or circle). Per corner: a list [top_left, top_right, bottom_right, bottom_left], or a mapping of corners and edges (top, right, bottom, left) with the rest square.
elevation	level_3	A shadow level, 0 to 5.
align_content	left	Where its children sit: top_left, top, top_right, left, center, right, bottom_left, bottom or bottom_right. Not set, they fill the space across the layout.
padding	left 4, right 4, top 0, bottom 0	Space inside it: one number, or {left, right, top, bottom}.

field (TextField)

Field	Value	What it does
background	transparent	Its fill: a theme role such as surface, #RRGGBB, any CSS colour, or a gradient such as linear-gradient(90deg, primary, tertiary).
flex	expand_horizontal	How it takes room in its parent: none (the default) is as big as its content and never squeezed, expand_horizontal and expand_vertical take the room left over in that direction, fill both.

What it makes

With placeholder: Search, width: 120, corner_radius: 20, each part's style is:

root:
  width: 120
  height: 56
  background: surface_container_high
  corner_radius: 20
  elevation: level_3
  align_content: left
  padding: {left: 4, right: 4, top: 0, bottom: 0}
field: {background: transparent, flex: expand_horizontal}

Changing it

Put a SearchBar_Stylesheet.yaml next to your views. Its rules go over this file's, field by field:

styles:
  - id: root
    style: {background: tertiary}