Select

A customizable select dropdown component with support for single and multiple selections, keyboard navigation, search filtering, and custom positioning. Built with floating-ui for intelligent dropdown placement.

Installation

import { Select, SelectOption } from "@geckoui/geckoui";

Basic Usage

Select Item

"use client";

import { Select, SelectOption } from "@geckoui/geckoui";
import { useState } from "react";

function Example() {
  const [value, setValue] = useState<string | null>(null);

  return (
    <Select value={value} onChange={setValue}>
      <SelectOption value="react" label="React" />
      <SelectOption value="vue" label="Vue" />
      <SelectOption value="angular" label="Angular" />
    </Select>
  );
}

Important: Use null or undefined for no selection. An empty string "" is considered a valid value and will try to match against options.

Props API

Prop	Type	Default	Description
`value`	`T \| null`	-	Selected value (required)
`onChange`	`(value: T \| null) => void`	-	Callback when selection changes (required)
`placeholder`	`string`	-	Placeholder text when empty
`disabled`	`boolean`	`false`	Disable the select
`closeMenuOnSelect`	`boolean`	`true`	Close menu after selection
`placement`	`Placement`	`'bottom-start'`	Menu placement position
`floatingStrategy`	`Strategy`	-	Floating positioning strategy
`wrapperClassName`	`string`	-	CSS class for wrapper
`menuClassName`	`string`	-	CSS class for menu
`placeholderClassName`	`string`	-	CSS class for placeholder
`className`	`string`	-	CSS class for select button
`filterable`	`boolean \| 'inline' \| 'dropdown'`	`false`	Enable search filtering
`multiple`	`boolean`	`false`	Enable multiple selection
`hideDefaultEmptyUI`	`boolean`	`false`	Hide default empty state
`inputRef`	`RefObject`	-	Ref for filter input
`prefix`	`ReactNode`	-	Content before select button
`suffix`	`ReactNode`	-	Content after select button

Examples

With Placeholder

Choose a framework...

const [value, setValue] = useState<string | null>(null);

<Select value={value} onChange={setValue} placeholder="Choose a framework...">
  <SelectOption value="next" label="Next.js" />
  <SelectOption value="remix" label="Remix" />
  <SelectOption value="gatsby" label="Gatsby" />
</Select>;

Disabled Options

Select Item

const [value, setValue] = useState<string | null>(null);

<Select value={value} onChange={setValue}>
  <SelectOption value="available" label="Available Option" />
  <SelectOption value="disabled" label="Disabled Option" disabled />
  <SelectOption value="another" label="Another Available" />
</Select>;

Disabled Select

Selected Option

<Select value="selected" onChange={() => {}} disabled>
  <SelectOption value="selected" label="Selected Option" />
  <SelectOption value="other" label="Other Option" />
</Select>

Placement Options

Select Item

const [value, setValue] = useState<string | null>(null);

// Opens upward
<Select value={value} onChange={setValue} placement="top-start">
  <SelectOption value="a" label="Choice A" />
  <SelectOption value="b" label="Choice B" />
</Select>

// Aligns to right
<Select value={value} onChange={setValue} placement="bottom-end">
  <SelectOption value="a" label="Choice A" />
  <SelectOption value="b" label="Choice B" />
</Select>

Grouped Options with Static Elements

You can add any HTML elements inside Select to create headers, dividers, and footers. These static elements won't interfere with filtering or selection.

Basic Grouping

Select a framework...

const [value, setValue] = useState<string | null>(null);

<Select value={value} onChange={setValue}>
  <div className="px-3 py-2 text-xs font-semibold text-gray-500 uppercase">Frontend</div>
  <SelectOption value="react" label="React" />
  <SelectOption value="vue" label="Vue" />
  <SelectOption value="angular" label="Angular" />

  <hr className="my-1 border-gray-200" />

  <div className="px-3 py-2 text-xs font-semibold text-gray-500 uppercase">Backend</div>
  <SelectOption value="node" label="Node.js" />
  <SelectOption value="django" label="Django" />
  <SelectOption value="rails" label="Rails" />
</Select>;

Grouped with Filterable

Static elements remain visible during filtering:

Search frameworks...

<Select filterable="inline" value={value} onChange={setValue}>
  <div className="px-3 py-2 text-xs font-semibold text-gray-500 uppercase bg-gray-50 dark:bg-neutral-800">
    Frontend Frameworks
  </div>
  <SelectOption value="react" label="React" />
  <SelectOption value="vue" label="Vue" />

  <hr className="my-1 border-gray-200" />

  <div className="px-3 py-2 text-xs font-semibold text-gray-500 uppercase bg-gray-50 dark:bg-neutral-800">
    Backend Frameworks
  </div>
  <SelectOption value="express" label="Express" />
  <SelectOption value="nest" label="NestJS" />
</Select>

With Header and Footer

Select a color...

<Select value={value} onChange={setValue}>
  <div className="px-3 py-2 border-b bg-gray-50 dark:bg-neutral-800">
    <p className="text-sm font-medium">Choose your favorite color</p>
    <p className="text-xs text-gray-500">This will be used as your theme</p>
  </div>

  <SelectOption value="blue" label="Blue" />
  <SelectOption value="green" label="Green" />
  <SelectOption value="purple" label="Purple" />

  <div className="px-3 py-2 border-t bg-gray-50 dark:bg-neutral-800">
    <a href="#" className="text-xs text-blue-600 hover:underline">
      Customize colors →
    </a>
  </div>
</Select>

Complex Grouping

Select a programming language...

<Select value={value} onChange={setValue}>
  <div className="px-3 py-2 bg-blue-50">
    <p className="text-xs font-semibold text-blue-700">⚡ Popular</p>
  </div>
  <SelectOption value="javascript" label="JavaScript" />
  <SelectOption value="python" label="Python" />

  <div className="px-3 py-2 bg-green-50 mt-1">
    <p className="text-xs font-semibold text-green-700">🚀 Trending</p>
  </div>
  <SelectOption value="rust" label="Rust" />
  <SelectOption value="go" label="Go" />

  <hr className="my-1 border-gray-200" />

  <div className="px-3 py-2">
    <p className="text-xs font-semibold text-gray-500">Others</p>
  </div>
  <SelectOption value="java" label="Java" />
  <SelectOption value="csharp" label="C#" />
</Select>

Static Notes

Select a plan...

<Select value={value} onChange={setValue}>
  <SelectOption value="free" label="Free Plan" />
  <SelectOption value="pro" label="Pro Plan - $29/mo" />
  <SelectOption value="enterprise" label="Enterprise Plan - $99/mo" />

  <div className="px-3 py-2 mt-2 bg-yellow-50 border border-yellow-200 rounded mx-2 mb-2">
    <p className="text-xs text-yellow-800">
      💡 <strong>Tip:</strong> Annual billing saves 20%
    </p>
  </div>
</Select>

Key Points:

Static HTML elements (divs, hr, etc.) won't interfere with option selection
They remain visible during filtering
Useful for headers, dividers, footers, and informational content
Style them with any CSS classes

Arrow Up/Down: Navigate options
Enter/Space: Select focused option
Escape: Close menu
Tab: Close menu and move to next element
Type to search: Filter options (when filterable enabled)

Accessibility

Built with floating-ui for intelligent positioning
Fully keyboard navigable
Click-outside to close
Focus management
Works with screen readers
ARIA attributes automatically applied

Styling

The component uses BEM-style class names:

GeckoUISelect - Main container
GeckoUISelectButton - Select button
GeckoUISelectMenu - Menu container
GeckoUISelectOption - Individual option
GeckoUISelectOption--selected - Applied to selected options
GeckoUISelectOption--focused - Applied to focused option

Multiple Selection - Multi-select mode with chips
Filterable - Search and filtering
SelectOption - Advanced option patterns
SelectTrigger - Custom triggers
SelectEmpty - Empty states
Advanced - Programmatic control

Select

Select

Installation

Basic Usage

Props API

Examples

With Placeholder

Disabled Options

Disabled Select

Placement Options

Grouped Options with Static Elements

Basic Grouping

Grouped with Filterable

With Header and Footer

Complex Grouping

Static Notes

Keyboard Navigation

Accessibility

Styling

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