c2n/web-componentsv1.0.26
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OverviewGetting startedComponentsIconsGuidesExamplesBlogs
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Audio Player

Waveform playback for voice notes and recordings: the waveform is the seek bar, with the time, a speed toggle and an optional transcript.

Attributes

NameTypeDefaultDescription
srcstring—The audio file, played by an <audio> of the player's own. Ignored while an <audio> is slotted.
labelstring—Names the player and its play button ("Play voice note from Ana").
peaksnumber[] | undefinedundefinedThe waveform: numbers from 0 to 1. Without it, the player computes it from src when it can fetch the file.
barsnumber48The most bars the waveform draws; a narrow waveform draws as many as fit.
durationnumber | undefinedundefinedThe length in seconds, shown before the audio's metadata has loaded.
exclusivebooleanfalsePauses every other exclusive player on the page when this one starts.
transcriptstring—A text transcript, shown below the player behind a toggle. The transcript slot takes richer content.
variantAudioPlayerVariantdefaultbubble is the compact chat-message look.
preload'none' | 'metadata' | 'auto'metadataHow much of the player's own <audio> loads up front, as on <audio>. none also waits for a play to compute the waveform.

Slots

NameDescription
(default)An <audio> to play instead of src.
avatarShown before the play button: the sender of a voice message.
transcriptThe transcript, shown below the player when opened (a c2-transcript given this player's media, or text).

Events

NameTypeDescription
playThe audio started playing.
pauseThe audio paused.
endedThe audio played to its end.
ratechangeThe speed changed.

CSS parts

Shadow DOM styling hooks used with ::part(name). Prefer CSS custom properties when they cover the change.

NameDescription
playerThe row that holds the controls.
playThe play and pause button.
waveformThe waveform, which is the seek bar.
timeThe time.
speedThe speed button.
transcriptThe transcript box.

CSS custom properties

Grouped by semantic target and state from --c2-<component>__<target>__<state>--<property>. Click a group to collapse it; click a name to copy it.

NameTypeDefaultDescription
c2-audio-player
--c2-audio-player--widthlength100%The player's width.
--c2-audio-player--background-colorcolor#ffffffThe player's background.
--c2-audio-player--borderborder1px solid #e4e4e7The player's border.
--c2-audio-player--border-radiuspixel8pxThe player's corners.
--c2-audio-player--paddinglength10px 12pxSpace inside the player.
--c2-audio-player--gappixel12pxSpace between the play button, the waveform, the time and the speed.
--c2-audio-player--colorcolor#18181bThe text colour.
--c2-audio-player--disabled-opacitynumber0.38The opacity of a player that cannot play.
c2-audio-player > play
--c2-audio-player__play--sizepixel36pxThe play button's size.
--c2-audio-player__play--background-colorcolorrgb(2, 101, 220)The play button's fill.
--c2-audio-player__play--colorcolor#ffffffThe play and pause icon.
c2-audio-player > waveform
--c2-audio-player__waveform--heightpixel32pxThe waveform's height.
c2-audio-player > bar
--c2-audio-player__bar--widthpixel3pxThe width of a bar.
--c2-audio-player__bar--gappixel2pxThe space between bars.
--c2-audio-player__bar--colorcolor#d4d4d8A bar not played yet.
c2-audio-player > bar > played
--c2-audio-player__bar__played--colorcolorrgb(2, 101, 220)A played bar.
c2-audio-player > time
--c2-audio-player__time--colorcolor#71717aThe time.
--c2-audio-player__time--font-sizepixel12pxThe time's size.
c2-audio-player > speed
--c2-audio-player__speed--background-colorcolor#f4f4f5The speed button's fill.
--c2-audio-player__speed--colorcolor#18181bThe speed button's text.
--c2-audio-player__speed--font-sizepixel12pxThe speed button's text size.
c2-audio-player > toggle
--c2-audio-player__toggle--colorcolorrgb(2, 101, 220)The transcript toggle.
c2-audio-player > transcript
--c2-audio-player__transcript--background-colorcolor#f4f4f5The transcript box.
--c2-audio-player__transcript--font-sizepixel13pxThe transcript's text size.
c2-audio-player > error
--c2-audio-player__error--colorcolor#dc2626The message shown when the audio cannot play.
c2-audio-player > focus
--c2-audio-player__focus--outlineoutline2px solid rgba(2, 101, 220, 0.4)The focus ring.
c2-audio-player > bubble
--c2-audio-player__bubble--background-colorcolor#ffffffThe bubble variant's fill.
--c2-audio-player__bubble--border-radiuslength16px 16px 16px 4pxThe bubble variant's corners.
--c2-audio-player__bubble--box-shadowshadow0 1px 2px rgba(24, 24, 27, 0.08)The bubble variant's shadow.
--c2-audio-player__bubble--max-widthlength320pxThe bubble variant's widest.

Text and languages

The text the component shows, in English. It shows another language when the app adds one with addTranslations, under audio-player, and the nearest lang asks for it; any message not translated stays in English. {0}, {1}… stand for the values a message carries. Languages guide.

KeyEnglishValues
playPlay—
pausePause—
playLabelPlay {0}{0} label
pauseLabelPause {0}{0} label
playerAudio—
seekSeek—
position{0} of {1}{0} time
{1} duration
speedPlayback speed {0}{0} speed
showTranscriptShow transcript—
hideTranscriptHide transcript—
errorCannot play this recording—
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as wide as what it carries.ChartSave BarA floating bar that appears while a form has unsaved changes, with Discard and Save.LayoutScatter chartAn ECharts scatter plot for finding relationships, clusters and outliers across two numeric measures.ChartSchedulerResource timeline: people, rooms or machines down the side, time across the top, each booking a bar you can drag.PlanningScroll AreaA scroll container with themed scrollbars and shadows on the edges with more content beyond them.LayoutScroll ProgressHow far the reader got: a bar that fills or a ring that closes as the page or a container scrolls.FeedbackSearch FieldA search box with a debounced search event, a clear button, a keyboard shortcut hint and recent searches.InputsSecret FieldShows an API key or other secret masked, with buttons to reveal it, copy it and ask for a new one.InputsSelectDropdown that pairs a themeable trigger with an anchored list of c2-list-item options.InputsSelection ToolbarA toolbar that appears over the 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power.ChartStatus LightColoured dot plus a short label for the state of something, such as Live, Building or Failed.Data displayStatus PanelCommunicate empty states, operation outcomes and recoverable errors with clear next steps.FeedbackStepsThe trace of a task as it runs, or a stepper across the top of a view: statuses, durations, stages that open while they work, and steps the reader can select.Data displayStickyPins content to the top or bottom of its scroll container and tells you when it is stuck, optionally hiding it while the reader scrolls down.LayoutStreaming TextPlain text that arrives in bursts, such as an LLM answer, revealed at a steady pace behind a caret.ChatSunburst chartA hierarchy drawn as rings, the whole at the centre and each ring splitting its parent: budgets, disk usage and org spend, with click to zoom.ChartSwipe ActionA list row that slides sideways to reveal actions behind it, as in a mail or task list on a phone.LayoutSwitchOn/off toggle on a native switch input, with label, description and thumb icons.InputsTableVirtualized data grid with declarative columns, sorting, selection, pinning and resizing.Data displayTable Of ContentsAn "On this page" navigation that lists the headings of a document, nests them by level and highlights the section being read.NavigationTabsTab strip that shows one content panel at a time.NavigationTag InputTurns typed or pasted text into removable tags — recipients, keywords, labels — with configurable delimiters, parsing and validation.InputsTerminalAn interactive prompt for commands your app answers: history, Tab completion, streaming output, Ctrl+C, ANSI colours.Editors & viewersText EffectAnimated text for a hero line or a status: rotating words, a typewriter, a scramble, a shimmer or a staggered reveal.Data displayText FieldSingle-line input with icon slots, clear button, helper and error text, and a character counter.InputsTextareaMultiline text input with resizing, helper and error text, and a character counter.InputsTheme SelectColour-theme switcher: click to step to the next mode, hover for the full menu.InputsTime InputForm-associated time-of-day input with a scroll-wheel picker, step and range constraints, helper text and error states.InputsTime Range PickerDashboard time range control: searchable quick ranges, an absolute range typed or picked on a calendar, time zone, shift and zoom, and auto-refresh.InputsTime Slot PickerPick a free time from someone's calendar: a row of days, then that day's times grouped into morning, afternoon and evening.InputsTimelineA vertical sequence of dated events on a connected rail: order history, activity feeds, changelogs.Data displayToastNotification cards and a manager for stacked, queued notifications with independent lifetimes.FeedbackTodo ListA to-do list with the feel of paper: hand-drawn ticks, notes, highlighters, swipe and drag, and a remembered look.PlanningToggletipA small ⓘ button that opens a help bubble on click or tap; the bubble can hold links and is announced to screen readers.FeedbackTooltipContextual hint shown when its target is hovered or focused, rendered in the top layer.FeedbackTourA guided product tour that spotlights one element at a time and explains it in a panel beside it.FeedbackTrace WaterfallShow the spans of a distributed trace as a tree, each with a duration bar on one shared time axis.Data displayTranscriptSpeaker-labelled, timestamped segments synced to playback: click to seek, the word playing marked, search built in.Data displayTreeHierarchical tree view with expansion, selection, checkboxes and lazy loading.Data displayTree SelectA dropdown for picking one or several rows from a hierarchy, with checkboxes, search and a form value.InputsTreemap chartA whole split into nested rectangles, each sized by its value: market maps, budgets and disk usage.ChartTruncateClamps text to a number of lines, with an optional Show more button.Data displayUploadDrag-and-drop file selection with validation, upload progress, retry, cancellation, and attachment results.InputsVideo GridLays out the tiles of a call as a grid, a spotlight or a sidebar, every tile as large as the space allows.LayoutVideo PlayerThemed controls over a real video: chapters on the seek bar, a thumbnail while scrubbing, captions, speed, picture-in-picture and full screen.Data displayVideo TileOne participant of a call: their video or avatar, with their name, a live microphone meter and status badges.Data displayView OptionsThe Display popover of a collection: layout, grouping, ordering on several levels, Show switches and visible properties, reported as one plain value.InputsVirtual ListWindowed list with built-in search, sorting, selection and an async data source.Data displayVisually HiddenText for screen readers only: kept in the accessibility tree, drawn nowhere, optionally shown while it holds focus.LayoutWaterfall chartA running total bridged by the steps that move it, where one row is one step and totals mark where the bridge lands.ChartWeek PlannerWeekly schedule with time blocks: a typical week with optional odd and even weeks, or a dated week the user edits.PlanningWheel PickeriOS-style scroll wheels to pick a time, a height, a weight or any value from a short list, by swipe, scroll, click or keys.InputsWorking IndicatorA live "work in progress" line: animated mark, shimmering label, trailing dots and elapsed time.FeedbackFeather Icons287 open-source Feather icons, one web component each.IconsMat Icon2,234 Material Icons ligatures rendered through a single element.IconsPhosphor Icons1,512 flexible icons in six weights, one web component each.IconsSymbols157 themeable spot illustrations for empty states, status panels, onboarding and error pages.IconsTask icons191 duotone icons for to-do items: work, home, health, sport, learning, food, money, travel and more.IconsThemingTheme every c2n component from a handful of design tokens with @c2n/theme, or reach for any component variable directly.GuideLanguagesComponents show their text in English; add your app’s languages as one JSON object, picked by the nearest lang.GuideFrameworksUse the components from React, Vue, Angular, Svelte, Lit or plain HTML — typed events, generated template types, and the one piece of configuration each framework needs.GuideUsing c2n in an applicationThe workflow behind every c2n app: load the theme once, use c2-* tags directly, and turn every repeated pattern into a small variant or composed component.GuideAI toolsGive Claude Code, Codex, Google Antigravity or GitHub Copilot the c2n skill, live component APIs, examples and application conventions.GuideNo components match.
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