Resizable

Panel and separator layout anatomy for application-supplied resizing behavior.

Preview

A live, theme-aware example rendered with the published component.

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Import

Import the component from its dedicated entry point to keep the dependency and generated bundle explicit.

TSX

tsximport { Resizable } from "@tavojs/ui/resizable";

Normal Tavo.js applications load component styles through the Tavo.js UI plugin. If the application manages component CSS manually, also import @tavojs/ui/css/resizable.

When to use

Use it when

Use Resizable when you need the visual panel, handle, and flex-basis structure and will implement pointer, keyboard, constraint, and state behavior in the application.

Choose something else when

Do not present the handle as functional without adding resizing logic and updating separator ARIA values. Use SplitPane for a fixed two-region layout.

Examples

Resizable example

TSX

tsximport { Resizable } from "@tavojs/ui/resizable";

export function ResizableExample1() {
  return (
    <>
      <Resizable>
        <Resizable.Panel defaultSize={{ base: "100%", lg: "40%" }}>Filters</Resizable.Panel>
        <Resizable.Handle />
        <Resizable.Panel>Results</Resizable.Panel>
      </Resizable>
    </>
  );
}

Common props and defaults

Prop	Type	Default	Description
`className`	`string`	—	Optional class hook applied to the public root element owned by the component.
`direction`	`"horizontal" \| "vertical"`	—	Configures direction for this component.
`Resizable.Panel.defaultSize`	`ResponsiveValue<string>`	—	Configures Resizable.Panel.defaultSize for this component.

Complete TypeScript API

Import from @tavojs/ui/resizable. Published exports: Resizable, ResizableHandle, ResizablePanel, ResizablePanelProps, ResizableProps, ResizableRoot.

`ResizableProps`

Property	Type	Required	Description
`children`	`Child`	No	Inherited children attribute accepted by Resizable.
`className`	`string`	No	Optional class hook applied to the public root element owned by the component.
`sx`	`Sx`	No	Inherited sx attribute accepted by Resizable.
`id`	`string`	No	Inherited id attribute accepted by Resizable.
`role`	`string`	No	Inherited role attribute accepted by Resizable.
`style`	`Record<string, unknown>`	No	Inherited style attribute accepted by Resizable.
`title`	`string`	No	Inherited title attribute accepted by Resizable.
`tabIndex`	`number`	No	Inherited tabIndex attribute accepted by Resizable.
`hidden`	`boolean`	No	Inherited hidden attribute accepted by Resizable.
`disabled`	`boolean`	No	Inherited disabled attribute accepted by Resizable.
`onClick`	`TavoEventHandler<MouseEvent>`	No	Inherited onClick attribute accepted by Resizable.
`onChange`	`TavoEventHandler<Event>`	No	Inherited onChange attribute accepted by Resizable.
`onInput`	`TavoEventHandler<Event>`	No	Inherited onInput attribute accepted by Resizable.
`onKeyDown`	`TavoEventHandler<KeyboardEvent>`	No	Inherited onKeyDown attribute accepted by Resizable.
`onFocus`	`TavoEventHandler<FocusEvent>`	No	Inherited onFocus attribute accepted by Resizable.
`onBlur`	`TavoEventHandler<FocusEvent>`	No	Inherited onBlur attribute accepted by Resizable.
`direction`	`"horizontal" \| "vertical"`	No	Configures direction for this component.

`ResizablePanelProps`

Property	Type	Required	Description
`children`	`Child`	No	Inherited children attribute accepted by Resizable.
`className`	`string`	No	Optional class hook applied to the public root element owned by the component.
`sx`	`Sx`	No	Inherited sx attribute accepted by Resizable.
`id`	`string`	No	Inherited id attribute accepted by Resizable.
`role`	`string`	No	Inherited role attribute accepted by Resizable.
`style`	`Record<string, unknown>`	No	Inherited style attribute accepted by Resizable.
`title`	`string`	No	Inherited title attribute accepted by Resizable.
`tabIndex`	`number`	No	Inherited tabIndex attribute accepted by Resizable.
`hidden`	`boolean`	No	Inherited hidden attribute accepted by Resizable.
`disabled`	`boolean`	No	Inherited disabled attribute accepted by Resizable.
`onClick`	`TavoEventHandler<MouseEvent>`	No	Inherited onClick attribute accepted by Resizable.
`onChange`	`TavoEventHandler<Event>`	No	Inherited onChange attribute accepted by Resizable.
`onInput`	`TavoEventHandler<Event>`	No	Inherited onInput attribute accepted by Resizable.
`onKeyDown`	`TavoEventHandler<KeyboardEvent>`	No	Inherited onKeyDown attribute accepted by Resizable.
`onFocus`	`TavoEventHandler<FocusEvent>`	No	Inherited onFocus attribute accepted by Resizable.
`onBlur`	`TavoEventHandler<FocusEvent>`	No	Inherited onBlur attribute accepted by Resizable.
`defaultSize`	`ResponsiveValue<string>`	No	Inherited defaultSize attribute accepted by Resizable.

State ownership and DOM target

Concern	Contract
State	No component state contract is exposed; the application owns the rendered content and surrounding behavior.
DOM target	Public passthrough props target the component root. Treat nested elements and private class names as implementation details.

Anatomy and related components

Public compound members: Root, Panel, Handle

Limitations

Do not present the handle as functional without adding resizing logic and updating separator ARIA values. Use SplitPane for a fixed two-region layout.

Use only the documented props, entry points, and compound members. Internal DOM nesting and CSS class names can change without becoming part of the public component contract.

Accessibility

Layout primitives are semantic-neutral unless a component prop selects an element role.

Choose semantic elements such as main, nav, aside, or section when the region has document meaning.
Keep heading order and landmark labels app-owned.

Component status

Contract	Current value
Maturity	stable
Category	layout
Component import	`@tavojs/ui/resizable`
Explicit CSS import	`@tavojs/ui/css/resizable`
Preview	Interactive preview available on this page