FileTrigger

Accessible file-input trigger styled through the button system.

Preview

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

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Import

Import from the focused entry point below, or use the same named export from @tavojs/ui. Both are public APIs; measure the built application when comparing their bundle cost.

TSX

tsximport { FileTrigger } from "@tavojs/ui/file-trigger";

The component import loads compiled component CSS. Enable tavoUi() for your project theme variables, or import @tavojs/ui/theme.css once for the package default theme. The equivalent CSS-safe component alias is @tavojs/ui/css/file-trigger.

When to use

Use it when

Use `FileTrigger` when a native file picker should use the same visual and interaction contract as `Button`

Choose something else when

Avoid FileTrigger when wrapping controls without labels or accessible names.

Examples

These examples include imports and local state where interaction requires it. Render the exported component in a page after completing UI installation. Demo state stays in the mounted component; connect file handling, persistence, and data loading to your application as needed.

FileTrigger example

TSXCreate: src/components/examples/FileTriggerExample1.tsx

tsximport { createTavo } from "@tavojs/core";
import { FileTrigger } from "@tavojs/ui/file-trigger";
import { Text } from "@tavojs/ui";

type State = { filename: string };

export const FileTriggerExample1 = createTavo<Record<string, never>, State>({
  model: () => ({ filename: "No file selected" }),
  view: ({ state, model }) => (
    <>
      <FileTrigger
        accept="application/json,.json"
        onFilesChange={(files) => model.set("filename", files[0]?.name ?? "No file selected")}
      >
        Choose JSON file
      </FileTrigger>
      <Text role="status">{state.filename}</Text>
    </>
  )
});

Common props and defaults

A curated starting point. The complete TypeScript API below includes additional props and compound member contracts.

Prop	Type	Default	Description
`className`	`string`	—	Optional class hook applied to the public root element owned by the component.
`accept`	`string`	—	Native accepted file types.
`multiple`	`boolean`	—	Allows more than one selected file.
`capture`	`boolean \| "user" \| "environment" \| string`	—	Forwards the native capture hint.
`name`	`string`	—	Native form field name.
`resetAfterSelection`	`boolean`	—	Clears the native value so the same file can be selected again.
`onFilesChange`	`(files: FileList, event) => void`	—	Exposes selected native files without reading or uploading them.
`variant`	`ButtonVariant`	—	Reuses Button styling.
`size`	`Size`	—	Reuses Button sizing.

Complete TypeScript API

Import from @tavojs/ui/file-trigger. Published exports: FileTrigger, FileTriggerProps.

`FileTriggerProps`

Property	Type	Required	Description
`children`	`Child`	No	Inherited children attribute accepted by FileTrigger.
`accept`	`string`	No	Native accepted file types.
`multiple`	`boolean`	No	Allows more than one selected file.
`capture`	`string \| boolean`	No	Forwards the native capture hint.
`name`	`string`	No	Native form field name.
`resetAfterSelection`	`boolean`	No	Clears the native value so the same file can be selected again.
`disabled`	`boolean`	No	Inherited disabled attribute accepted by FileTrigger.
`onClick`	`TavoEventHandler<MouseEvent>`	No	Inherited onClick attribute accepted by FileTrigger.
`onFilesChange`	`(files: FileList, event: Event & { currentTarget: HTMLInputElement; }) => void`	No	Exposes selected native files without reading or uploading them.

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	Native input attributes target the owned form control; wrapper-specific props stay on the documented component root.

Anatomy and related components

This component exposes one public component root rather than a compound member API.

Limitations

Avoid FileTrigger when wrapping controls without labels or accessible names.

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

The visible trigger is a native button and works with pointer, Enter, and Space activation. The file input remains native and is reset only after the callback runs.

The visible trigger is a native button and works with pointer, Enter, and Space activation. The file input remains native and is reset only after the callback runs.

Component status

Contract	Current value
Maturity	stable
Category	forms
Component import	`@tavojs/ui/file-trigger`
Explicit CSS import	`@tavojs/ui/css/file-trigger`
Preview	Interactive preview available on this page