gpui-component

Read This First

Before changing UI, interaction, interface language, layout, styling, components, or application architecture, read the relevant guide:

Guide	Read before
Design Guides	Choosing components, layout, spacing, hierarchy, color, density, interaction states, overlays, interface copy
Coding Guides	Crate layering, RenderOnce vs Entity<T>, state ownership, ElementId, focus, async, public API, testing

These guides are requirements, not optional inspiration. Do not copy generic web conventions, infer a design system from one existing screen, or add a control merely because the underlying feature exists. Review the finished work against both guides before considering it complete.

Read the guide file itself. Do not answer from what this page summarizes, from an existing screen in the codebase, or from training data — those are the three ways the guides get quietly ignored.

Non-negotiables

These are a floor, not a substitute. Read the guide for anything past this list.

• Never invent an API. Search the current source for the real signature. Do not translate a React, CSS, or older-GPUI example by analogy — a plausible-looking method name that does not exist is the most common failure mode here.
• Desktop before web convention. Keyboard access, window chrome, menus, dense data views, resizable regions, persistent navigation.
• Button vs Link. Button for every in-app command — use ghost or outline when it should read quietly. Link only for external URLs and email addresses.
• Tokens before values. No raw hex or rgb(...) in application UI; use cx.theme() semantic tokens. Use rem-based helpers (p_2(), gap_3(), text_sm()) so window zoom works. Any spacing number you see quoted is the current default scale, not a literal to repeat.
• State must be visible. Hover, focus, selection, disabled, loading, validation, and destructive states each need distinct, consistent treatment.
• Stable identity. Repeated elements need domain-derived ElementIds, not list indexes.
• Overlays. Escape dismisses the topmost surface and returns focus to its trigger.
• Copy. Name the object and the verb — Delete “Roadmap”? with a Delete button, not Are you sure? with OK.

Documentation

• Full reference: fetch https://longbridge.github.io/gpui-component/llms-full.txt
• Per-component API: fetch https://longbridge.github.io/gpui-component/docs/components/{name}.md
  • e.g. button.md, input.md, select.md, dialog.md, data-table.md
• Any site page can be fetched as Markdown by appending .md to the URL

Quick Reference

Setup — always required:

gpui_component::init(cx);               // in app.run(), must be first
Root::new(view, window, cx)             // first-level view in every window

Stateless — use directly in render:

Button::new("id").primary().label("OK").on_click(|_, _, _| {})

Stateful — hold Entity<State> in struct, pass ref in render:

// in new():  let input = cx.new(|cx| InputState::new(window, cx));
// in render: Input::new(&self.input)

Sizes: .xsmall() .small() .medium() (default) .large()

Theme: cx.theme().primary · .background · .foreground · .border · .muted

Component Catalog

When you need a component, find it here. For full API, fetch its .md doc.

Input & Form

Component	Import	Notes
Input	input::{Input, InputState}	Stateful. Text, password, mask, validation
NumberInput	input::{NumberInput, NumberInputEvent}	Stateful. Numeric with step
OtpInput	input::OtpInput	Stateful. One-time password
Select	select::{Select, SelectState}	Stateful. Dropdown picker
Combobox	combobox::{Combobox, ComboboxState}	Stateful. Searchable select
Checkbox	checkbox::Checkbox	Stateless. `on_click(
Switch	switch::Switch	Stateless. Toggle
Radio	radio::{Radio, RadioGroup}	Stateless.
Slider	slider::{Slider, SliderState}	Stateful.
Toggle	button::Toggle	Stateless.
Rating	rating::Rating	Stateless.
Stepper	stepper::Stepper	Stateless. Increment/decrement
ColorPicker	color_picker::{ColorPicker, ColorPickerState}	Stateful.
DatePicker	date_picker::{DatePicker, DatePickerState}	Stateful.
Form	form::{v_form, h_form, field}	Layout container for form fields

Display & Feedback

Component	Import	Notes
Button	button::{Button, ButtonGroup}	Stateless. Primary UI action
Icon	{Icon, IconName}	Stateless. Lucide icons
Badge	badge::Badge	Stateless.
Tag	tag::Tag	Stateless. Closable tags
Avatar	avatar::Avatar	Stateless.
Label	label::Label	Stateless. Form label
Kbd	kbd::Kbd	Stateless. Keyboard key display
Alert	alert::Alert	Stateless. Info/success/warning/error
Spinner	spinner::Spinner	Stateless. Loading indicator
Skeleton	skeleton::Skeleton	Stateless. Loading placeholder
Progress	progress::{Progress, ProgressCircle}	Stateless.
Tooltip	tooltip::Tooltip	Via .tooltip() on elements
HoverCard	hover_card::{HoverCard, HoverCardState}	Stateful.
Clipboard	clipboard::Clipboard	Stateless. Copy button

Overlay & Popups

Component	Import	Notes
Dialog	dialog::Dialog + WindowExt	Via window.open_dialog(...)
AlertDialog	WindowExt	Via window.open_alert_dialog(...)
Sheet	sheet::Sheet + WindowExt	Side panel, via window.open_sheet(...)
Notification	notification::Notification + WindowExt	Via window.push_notification(...)
Popover	popover::Popover	Floating overlay
Menu	menu::{PopupMenu, DropdownMenu}	Context menus
DropdownButton	button::DropdownButton	Button with dropdown menu

Navigation & Layout

Component	Import	Notes
Tabs / TabBar	tab::{Tab, TabBar}	Tabbed interface
Sidebar	sidebar::{Sidebar, SidebarMenu, ...}	App navigation panel
TitleBar	TitleBar	Window title bar
Breadcrumb	breadcrumb::Breadcrumb	Navigation breadcrumb
Pagination	pagination::Pagination	Page navigation
Accordion	accordion::Accordion	Collapsible sections
Collapsible	collapsible::Collapsible	Single collapsible
GroupBox	group_box::GroupBox	Labeled container
Resizable	resizable::{h_resizable, v_resizable, resizable_panel, ResizableState}	Draggable split panes
Scrollable	scroll::Scrollbar	Custom scrollbar
FocusTrap	gpui_base::focus_trap::FocusTrapElement	Keyboard trap for modals

Data Display

Component	Import	Notes
DataTable	table::{DataTable, TableState, TableDelegate}	Stateful. Full-featured table
Table	table::{Table, ...}	Simpler table
VirtualList	{v_virtual_list, h_virtual_list}	High-perf large lists
List	list::{List, ListState, ListDelegate}	Stateful. Searchable list
Tree	tree::{Tree, TreeState, TreeItem, TreeEntry}	Stateful. Hierarchy
DescriptionList	description_list::DescriptionList	Key-value pairs
Settings	setting::Settings	Settings panel

Charts

Component	Import	Notes
Chart	chart::{AreaChart, BarChart, LineChart, PieChart, RadarChart}	Bar, line, area, pie charts
Plot	plot::Plot	#[derive(IntoPlot)] for data

Reference Files

• usage.md — setup patterns, component types, common examples
• style-guide.md — code style for contributors