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Resizable

Panels people resize by dragging the line between them.

Left out of Multi-brand Resizable suits desktop tools where people size panels, not phones. Multi-brand avoids tools staff use all day, and customers sign up on phones. Use instead: Sidebar, Sheet

See it live​

Start Storybook to see it live: npm run storybook
Live from StorybookOpen Resizable in StorybookSee it in dark

When to use it​

  • Use it when: Desktop tools where people choose how much space each panel gets.
  • Not when: Phones, or layouts with one obvious shape.

Instead:

Words​

  • Shared structure: object, state, next step.
  • Brand tone lives in headlines and marketing copy, not in errors.
  • Errors and confirmations read the same in every brand.
  • Use: Get started, Plan, Order. Avoid: Brand-specific words in errors, Jargon.

The labels components use, from the voice tokens:

  • content.action.commit: Save
  • content.action.cancel: Cancel
  • content.action.destroy: Remove
  • content.action.retry: Try again
  • content.action.empty-action: Get started

See Voice and tone for the whole voice.

Accessibility and keyboard​

KeyboardWhat happensNot
undefinedThe handle can be focused and moved with arrow keys.undefined

Use it in code​

npx open-ds add resizable

The component reads only component keys and semantic tokens, so it follows the brand and mode on <html>.

Tokens it reads​

Resizable reads 7 tokens of its own, each an alias of a semantic token. Each row is one part: its own token, the semantic it aliases, and the value it ends at. Change a semantic and every component that reads it follows; override one of Resizable's tokens to change Resizable alone.

Changes with theme

Multi-brand decides what changes when you switch theme. Here a switch changes colors, type and shape, so the marked rows differ between its brands and between light and dark; everything else holds steady.

PartIts token and the semantic it aliasesValue
Handle
Fill
Changes with theme		component.resizable.handle.backgroundcolor.border.defaultvar(--resizable-handle-background)Aster Lightslate-deep.light.200:#E2E8F0Aster Darkslate-deep.dark.100:#1E293BBirch Lightslate-deep.light.200:#E2E8F0Birch Darkslate-deep.dark.100:#1E293BCoral Lightslate-deep.light.200:#E2E8F0Coral Darkslate-deep.dark.100:#1E293B
Focus
on focus		component.resizable.handle.focusborder-width.focusvar(--resizable-handle-focus)border-width.2:2px
Focus ring focus
Changes with theme
on focus		component.resizable.handle.focus-ring-focuscolor.border.focusvar(--resizable-handle-focus-ring-focus)Aster Lightteal.light.600:#0F766EAster Darkteal.dark.600:#7FCFC6Birch Lightpurple.light.600:#6D28D9Birch Darkpurple.dark.600:#B79DF7Coral Lightorange.light.600:#C2410CCoral Darkorange.dark.600:#F7A67F
Focus ring offset focus
Changes with theme
on focus		component.resizable.handle.focus-ring-offset-focuscolor.surface.canvasvar(--resizable-handle-focus-ring-offset-focus)Aster Lightslate-deep.light.50:#F8FAFCAster Darkslate-deep.dark.0:#020617Birch Lightslate-deep.light.50:#F8FAFCBirch Darkslate-deep.dark.0:#020617Coral Lightslate-deep.light.50:#F8FAFCCoral Darkslate-deep.dark.0:#020617
Resizable
Heightcomponent.resizable.heightsize.iconvar(--resizable-height)size.16:1rem
Corner
Changes with theme		component.resizable.radiusradius.badgevar(--resizable-radius)Aster Lightradius.4:0.25remAster Darkradius.4:0.25remBirch Lightradius.999:9999pxBirch Darkradius.999:9999pxCoral Lightradius.999:9999pxCoral Darkradius.999:9999px
Fill
Changes with theme		component.resizable.backgroundcolor.border.defaultvar(--resizable-background)Aster Lightslate-deep.light.200:#E2E8F0Aster Darkslate-deep.dark.100:#1E293BBirch Lightslate-deep.light.200:#E2E8F0Birch Darkslate-deep.dark.100:#1E293BCoral Lightslate-deep.light.200:#E2E8F0Coral Darkslate-deep.dark.100:#1E293B
From the system
Edge
Changes with theme		color.border.default
straight from the system, through --border		Aster Lightslate-deep.light.200 · #E2E8F0Aster Darkslate-deep.dark.100 · #1E293BBirch Lightslate-deep.light.200 · #E2E8F0Birch Darkslate-deep.dark.100 · #1E293BCoral Lightslate-deep.light.200 · #E2E8F0Coral Darkslate-deep.dark.100 · #1E293B