olivv-cs-ComfyUI-FunPack/docs/ui-kit-reference.md

UI kit reference

The kit is called the Composer: app/ui/composer/. It is the only code that styles or builds raw DOM. For when to use which element, read UI design guidelines. This page is the reference.

How elements work

import { composer } from "../../composer/composer.js";

const save = composer.button.md({ label: "Save", tone: "primary", onClick: save });
host.appendChild(save.node);
save.setBusy(true);
// later
save.destroy();

• An element is composer.<group>.<variant>(props). It returns a handle: { node, destroy, ...methods }.
• node is the DOM node to place. destroy() removes listeners and the node. A feature that creates elements after setup returns must destroy them itself.
• Methods differ by element. The common ones are setValue, get, setText, setItems, setDisabled, setBusy, setPressed, open and close. Read the factory in composer/elements/<file>.js for the exact set.
• Content is text. Every string prop goes through asText (internals/text.js) and is shown as text, never parsed. A prop that would take HTML does not exist.
• Containers take handles, not nodes or markup: panel.default({ children: [handleA, handleB] }).
• Unknown elements throw UnknownElement. composer.button.huge(...) fails with the list of known variants. A feature that asks for an element that does not exist therefore hides itself instead of showing something approximate.
• The kit's own CSS classes start with cx-. App frame classes start with fp- (app/ui/frame.css) and belong to the shell. Never use either from a feature; the feature rule test fails on a cx- or fp- string.

Where each group lives

File	Groups
text.js	brand, code, header, hint (low: true hides it first when the row runs short), label, text
button.js	button, buttonGroup, iconButton
input.js	filterList, input, number, search, stepper, textarea
choice.js	checkbox, checkboxRow, checklist, color, radioGroup, segmented, select, toggle
slider.js	range, slider
layout.js	actionBar, card, collapsible, field, frame, group, hero, list, panel, region, settingsRow, sidebar, splitPane, tabs, toolbar, workspace
tile.js	grid, tile
stage.js	stage
status.js	banner, chip, dot, dropzone, emptyState, inlineError, progress, skeleton, spinner, toast
modal.js	modal
popover.js	autocomplete, menu, popover, splitButton, tooltip
floating.js	floating (window, corner), overlay, slideOver
gallery.js	gallery, ruler, viewer (media, cover)
track.js, nle.js	track, timeline
wheel.js	wheel

Elements

Variants are listed after the group. Props shown are the ones every use needs; the catalogue (catalogue/elements.html) and catalogue/demos.js show each element with a working set.

Text

Element	Variants	Main props
header	display, xl, lg, md, sm	text
text	lg, md, sm, xs	text. Has setText.
hint	default	text
label	field, section	text, for
code	inline, block	text, label (block)
brand	default	name

Actions

Element	Variants	Main props
button	xl, lg, md, sm, menu	label, onClick, tone (neutral, primary, danger, ghost, render), icon, disabled, busy, type, title, pressed. Methods setBusy, setDisabled, setPressed, setLabel.
iconButton	md, sm, micro	icon, label (required), onClick, tone, disabled, pressed
buttonGroup	md	label, value, items
splitButton	md	label, items, onClick

Inputs and choices

Element	Variants	Main props
input	md, sm	value, placeholder, label, onCommit
search	md	placeholder, label
textarea	md	value, rows, label
number	md	value, min, max, step, precision, unit, snap, onChange, disabled, id, label
stepper	md	value, min, max, step, label
slider	md, sm, readout, macro	value, min, max, step, label, onChange, onCommit. .setMax(n) changes the top and redraws the fill.
range	md	from, to, min, max, step, label
toggle	default	label, hint, checked, onChange
checkbox	default	checked, label
checkboxRow	default	label, hint, checked
checklist	default	label, values, items
radioGroup	default	label, value, options
segmented	md, sm	label, value, options, onChange
select	md, sm	label, value, options, onChange
filterList	md	value, items
autocomplete	default	anchored to an input; sits above modals
color	swatch	label, value
wheel	picker, half	edge, items
dropzone	default	label, hint

options is a list of { value, label }. Changes are reported as the value, not as an event.

Layout

Element	Variants	Notes
frame	app	The page frame. Owned by the shell.
workspace	docked	Docked areas around a centre.
splitPane	h, v	Two children with a draggable divider.
region	stack	children, gap, label, fill. .set(children) replaces them.
panel	default, zone	A titled card.
group	default	A quiet sub-block.
field	default, row	A label, a control and a hint.
settingsRow	default	The row the Settings window uses. .setHint(text) changes its hint later.
card	default	children. Related fields on one rounded card (a region.stack with a background).
grid	pair, cards	children. Tiles in two columns, or as many columns as fit (at least 190 wide).
tile	action, node, add	title, sub, onClick. node also takes state (ready, needs, skipped) and draws a dot. add is the dashed empty slot.
hero	default	title, hint. The mark, a big title and one line (the top of About).
collapsible	default
tabs	underline, dock	value, tabs.
sidebar	rail	value, items.
toolbar, actionBar	default, sticky	Toolbars wrap; an action bar sticks to the bottom of its scroll area.
list	rows	Grouped rows.

Status and feedback

Element	Variants	Main props
banner	info, warn, danger	text
chip	neutral, good, warn, danger, info	label
dot	default	tone, label
inlineError	default	text
toast	info, good, warn, danger	text, action, duration (default 3200 ms)
progress	bar, indeterminate, inline	value, max, label. inline is a short bar with a line of text beside it: .setValue, .setText, .setHidden.
spinner	md, sm	label
skeleton	line, block, grid	count, label
emptyState	default	icon, title, hint

Overlays

Element	Variants	Main props
modal	generic, stacked, dialogue, prompt, choice	generic: title, subtitle, size (sm, md, lg, xl), body, actions, onClose, closeOnOutside, closeOnEsc. dialogue: title, message, tone, confirmLabel, cancelLabel, onResult, and a .result promise.
popover	anchored	Positioned by internals/anchor.js, flips at an edge.
menu	dropdown, context	A context menu is anchored to a point, not an element.
tooltip	default
floating	window, corner	window is a draggable window (the Settings and Sampler windows). corner is a small button pinned inside the bottom-right corner of anchor (a handle or a node); it follows the box and calls onGone when the box leaves.
slideOver	md	A panel that slides in from the side.
overlay	blocking	message. Blocks the page while something runs.

All overlays use the portal, the z-ladder and the dismiss stack.

Media and time

Element	Variants	Main props
gallery	adaptive, icons, list, rows, cards, strip	id, cols, items. Density through internals/density.js.
viewer	media, cover	media: src, empty; .setLook({ transform, filter, fit, opacity }) changes how the picture is drawn (kept across sources). cover is a layer over its parent that shows a picture, clip or sound with a close button: .show({ src, kind }), .close(), onClose.
stage	overlay	A transparent layer over a picture holding text and pictures that can be dragged and resized. Gives data (items: position as 0..1, size in picture pixels, colours, text); onMove(id, {x, y}) and onResize(id, factor) report numbers, never styles. .fit(w, h) sizes it to the picture inside its parent, .setItems(items) draws, .busy is true during a gesture.
ruler	default	label, total, marks
track	default	label, pxPerSecond, playhead, selection, items
timeline	stage	pxPerSecond, lanes. Methods setLanes, setPlayhead, setZoom.

Internals

Used by elements. A feature does not import them. They exist in composer/internals/:

File	Does
register.js	define, UnknownElement, lookups.
el.js, text.js	Safe DOM building, asText, setText.
ids.js	Unique ids for label and control pairs.
zlayer.js	The z-ladder. The only place a z-index is written.
portal.js	Where overlays are drawn.
dismiss.js	One Escape and outside-click stack.
focus.js	trap and roving.
anchor.js	Pure placement (measure, flip, clamp) plus anchorTo.
drag.js, dragReorder.js, snap.js, swapping.js	Dragging, reordering and snapping.
density.js	Grid columns 0 to 4, saved per id.
motion.js	Reduced motion check and shared timings.

Adding an element

1. Write it in the right file under composer/elements/ (or a new file). Call define(group, variant, factory) once per variant. The factory takes props and returns a handle. Use only el, asText and the internals. Never write innerHTML.
2. Register the file. A new file is imported in elements/index.js and its stylesheet is added to composer.css before polish.css.
3. Style it with tokens only, using cx- class names. Cover both themes and reduced motion.
4. Add a demo to catalogue/demos.js under "<group>.<variant>". A registered element with no demo fails the suite. A demo is a props object, or a function that receives composer when the props need other handles.
5. Teach the content test any new string prop name. composer/tests/rule_content_is_data.test.js attacks every string under the names in CONTENT_KEYS with a markup payload and proves it comes back as text. If your prop name is not in the set (for example caption or empty), add it, or the test fails with a message naming the demo.
6. Test behaviour in composer/tests/elements_behaviour.test.js or a new *.test.js beside it: what the element does when used, not only that it renders.
7. Look at it in catalogue/elements.html in dark and light.

Rule tests that run over the whole kit

Test	Proves
rule_content_is_data.test.js	Every string prop of every demo is shown as text.
rule_unknown_element_hides.test.js	Asking for a missing element throws and hides the feature.
rule_features_use_the_kit.test.js	Every file in app/ui/features/ passes FEATURE_RULES (no document, window, style, class names, literal colours or sizes).
rule_kit_never_interprets.test.js	tools/kit_lint finds no markup parsing or eval in the kit and the shell, and still catches a bad example.
register.test.js	Duplicate definitions are refused.
overlays.test.js, dismiss.test.js, zlayer.test.js, portal.test.js	Layering, Escape and portal behaviour.
panel_schema.test.js	panel.js draws every setting type.

panel.js and the catalogue

composer/panel.js renders a module's SETTINGS as a panel with the allowed ui renderers. The live app does not use it for Settings (it uses features/settings/field.js); the catalogue and the tests do. So a ui value changes what the catalogue shows, not what Settings > Engine draws. See Module reference.

The catalogue

Open /funpack/app/ui/catalogue/ with the devserver running (python tools/devserver.py 8199).

Page	Shows
index.html	Tokens: type, colour, spacing, radius, motion.
elements.html	Every registered element in both themes.
hide.html	What happens when a module is broken or missing.
log.html	The Log view.