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deepseek-harness/packages/client/ui-conversation/src/client/chat/ToolRow.tsx
2026-08-02 06:12:13 -07:00

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// ToolRow: the single-line tool summary row (figma component set 122:9479) —
// 16px leading slot (state dot / tool icon, chevron on hover or expanded) + title +
// separator dot + FILL-truncated summary, drawn through the shared
// DisclosureRow chrome with the whole row as the expand toggle (click /
// Enter / Space, icon→chevron hover preview). The collapsed row is always
// one line; every row with body, output, or a card material (terminal, diff,
// read, search, web) is expandable; the summary stays inline while open,
// except Think, where the running collapsed row follows the latest line at its
// scroll end and the summary yields while open to avoid repeating the body.
// The expanded body — an IN/OUT gutter-labeled card (figma 1249:35657) for
// text input/output, the run_code program through CodeBlock, or a card
// primitive (TerminalBlock, DiffBlock, ReadBlock, SearchBlock, WebBlock) for a
// call that declared that render intent — lives in a max-height scroll
// container so a long payload scrolls internally instead of taking over the
// message flow; Think's prose is the exception and flows uncapped like message
// text. Every card kind starts collapsed, so a run of tool calls stays
// scannable; the details panel is the single-call full-height reading surface.
// Expand state is component-local view state. File-tool summaries are path
// links that open through the host (stopPropagation keeps the two gestures
// independent); an error row's collapsed summary is the failure's first line in
// the error color.
import { useLayoutEffect, useRef, useState, type KeyboardEvent, type MouseEvent, type ReactNode } from 'react'
import clsx from 'clsx'
import {
CodeBlock, DiffBlock, ReadBlock, SearchBlock, StateDot, TerminalBlock, WebBlock,
} from '@deepseek-ai/dsh-client-ui-primitives'
import type { WebBlockProps } from '@deepseek-ai/dsh-client-ui-primitives'
import type { TranslateNS } from '@deepseek-ai/dsh-client-ui-slots'
import { CHAT_DIFF_MAX_LINES, type DiffCardModel } from '../contract/diff-card-model.ts'
import { CHAT_READ_MAX_LINES, type ReadCardModel } from '../contract/read-card-model.ts'
import { CHAT_SEARCH_MAX_LINES, type SearchCardModel } from '../contract/search-card-model.ts'
import { CHAT_WEB_MAX_SOURCES } from '../contract/web-card-model.ts'
import { terminalBlockLabels, type TerminalCardModel } from '../contract/terminal-card-model.ts'
import type { ToolRowState, ToolRowVariant } from '../contract/tool-call-model.ts'
import { DisclosureRow } from './DisclosureRow.tsx'
import css from './ToolRow.module.css'
export interface ToolRowProps {
/** The render site's conversation locale seat (terminal/code body copy). */
t: TranslateNS<'conversation'>
variant: ToolRowVariant
/** Wire tool name for tool-owned styling layered over the generic variant. */
toolName?: string | undefined
/** Leading 16px tool icon, shown while collapsed and not running/failed. */
icon: ReactNode
title: string
summary: string
/** Expanded-body input text; null = no input section. */
body: string | null
/** Flattened result text for the expanded Output section; null/absent = no output section. */
output?: string | null | undefined
/** Error first line shown as the collapsed summary on an error row; null/absent = keep `summary`. */
errorSummary?: string | null | undefined
/**
* Terminal-card material for a call whose render intent is a terminal card
* (derived by `terminalCardModel`); it replaces the text sections when
* present. A call carries at most one card kind, so the card props below are
* mutually exclusive.
*/
terminal?: TerminalCardModel | null | undefined
/**
* Diff-card material for a call whose render intent is a diff card (derived by
* `diffCardModel`); it replaces the text body when present, the same way
* `terminal` does.
*/
diff?: DiffCardModel | null | undefined
/**
* Read-card material for a call whose render intent is a read card (derived by
* `readCardModel`); it replaces the text body with the file's line-numbered,
* syntax-highlighted window when present.
*/
read?: ReadCardModel | null | undefined
/**
* Search-card material for a call whose render intent is a search card
* (derived by `searchCardModel`); it replaces the text body with grouped
* matches or a path list when present.
*/
search?: SearchCardModel | null | undefined
/**
* Web-card material for a call whose render intent is a web card (derived by
* `webCardModel`); it replaces the text body with the retrieval's citation
* list or fetched-source card when present.
*/
web?: WebBlockProps | null | undefined
state: ToolRowState
/**
* Filesystem path from tool args; when set with onOpenFile, the summary
* renders as a hover-underline link that opens the host default app.
*/
filePath?: string | undefined
/** Open the path with the host OS default application (already cwd-resolved). */
onOpenFile?: ((path: string) => void) | undefined
/**
* Jump to this call in the trajectory view: a hover-revealed Inspect pill
* over the expanded body. Absent = no affordance (rows without a call
* identity, like Think).
*/
inspect?: (() => void) | undefined
}
/** The Inspect pill's code glyph (user-supplied 16×16), fill follows text color. */
function IconInspect() {
return (
<svg width="12" height="12" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" aria-hidden>
<path d="M16 8L10.8571 12V10.552L14.1383 8L10.8571 5.448V4L16 8ZM5.14286 10.552L1.86171 8L5.14286 5.448V4L0 8L5.14286 12V10.552ZM9.02514 4L5.59657 12H6.84057L10.2691 4H9.02514Z" fill="currentColor" />
</svg>
)
}
/** Leading-slot state substitution: the tool icon yields to the terminal state
* semantic (error = red, interrupted = amber halo). Running keeps the icon —
* the row sweep (CSS on data-state) carries the in-flight signal. */
function leadingFor(state: ToolRowState, icon: ReactNode): ReactNode {
switch (state) {
case 'error': return <StateDot state="error" />
case 'stopped': return <StateDot state="warning" />
default: return icon
}
}
/** Visually hidden run-state label: the StateDot and the CSS sweep are both
* aria-hidden / colour-only, so assistive technology needs this text to know a
* row is running, failed, or interrupted. null in the ok state (the icon and
* summary already describe a settled row). */
function stateStatus(state: ToolRowState, t: TranslateNS<'conversation'>): string | null {
switch (state) {
case 'running': return t('row.running')
case 'error': return t('row.failed')
case 'stopped': return t('row.stopped')
default: return null
}
}
export function ToolRow({
t,
variant,
toolName,
icon,
title,
summary,
body,
output,
errorSummary,
terminal,
diff,
read,
search,
web,
state,
filePath,
onOpenFile,
inspect,
}: ToolRowProps) {
const [expanded, setExpanded] = useState(false)
const summaryRef = useRef<HTMLSpanElement>(null)
const terminalBody = terminal ?? null
const diffBody = diff ?? null
const readBody = read ?? null
const searchBody = search ?? null
const webBody = web ?? null
const outputText = output ?? null
// A card replaces the text body; a call carries at most one card kind, so the
// card props are mutually exclusive. Any of them, or a text body/output,
// makes the row expandable.
const card = terminalBody ?? diffBody ?? readBody ?? searchBody ?? webBody
const expandable = body !== null || outputText !== null || card !== null
const open = expanded && expandable
// The run-state label AT needs: the StateDot and the running sweep are both
// aria-hidden / colour-only, so a stopped or running row is otherwise silent.
const status = stateStatus(state, t)
// An error row's collapsed summary IS the failure: the first error line in
// the error color outranks both the args summary and a terminal description.
const failureLine = state === 'error' ? errorSummary ?? null : null
const summaryText = failureLine ?? summary
// The failure line is error prose, not the path: no open-file affordance.
const fileLink = filePath !== undefined && onOpenFile !== undefined && failureLine === null
const isThink = variant === 'think'
const followSummaryEnd = isThink && state === 'running' && !open
useLayoutEffect(() => {
const summaryElement = summaryRef.current
if (summaryElement === null) return
summaryElement.scrollLeft = followSummaryEnd
? summaryElement.scrollWidth - summaryElement.clientWidth
: 0
}, [followSummaryEnd, summaryText])
const toggleExpand = () => {
setExpanded(v => !v)
}
const openFile = (event: MouseEvent<HTMLButtonElement>) => {
event.stopPropagation()
if (filePath !== undefined) onOpenFile?.(filePath)
}
// Keep Enter/Space on the focused path link from bubbling to the row's
// keydown handler, which would preventDefault() the key and toggle expand
// instead of activating the link — the keyboard analogue of openFile's
// stopPropagation. The native button still fires its own onClick from the key.
const fileLinkKeyDown = (event: KeyboardEvent<HTMLButtonElement>) => {
if (event.key === 'Enter' || event.key === ' ') event.stopPropagation()
}
// Think reasoning is prose, not an input payload: expanded, it renders as
// plain indented text (no IN/OUT card) and the inline summary yields to avoid
// repeating the body.
// The code variant's program renders through CodeBlock (shiki), so only its
// output joins the IN/OUT card; every other variant's input does too.
const cardBody = variant === 'code' ? null : body
// The state substitution rides the idle icon slot, so an expandable error
// row keeps DisclosureRow's icon→chevron hover preview (its default) instead
// of losing it with the icon.
return (
<div className={css.root} data-variant={variant} data-tool={toolName} data-state={state}>
{status !== null && <span className={css.visuallyHidden}>{status}</span>}
<DisclosureRow
rowClassName={css.row}
leadingClassName={css.leading}
titleClassName={css.title}
chevronClassName={css.chevron}
icon={leadingFor(state, icon)}
title={title}
open={open}
expandable={expandable}
expandOnRowClick
keepContentWhenOpen={!isThink}
onToggle={toggleExpand}
collapsedContent={summaryText !== '' && (
/* An empty summary drops the separator with it (a row that is only
its title shows no trailing dot). */
<>
<span className={css.sep} aria-hidden />
{fileLink ? (
<button
type="button"
className={css.fileLink}
onClick={openFile}
onKeyDown={fileLinkKeyDown}
>
{summaryText}
</button>
) : (
<span
ref={isThink ? summaryRef : undefined}
className={clsx(css.summary, failureLine !== null && css.errorSummary)}
data-follow-end={followSummaryEnd || undefined}
>
{summaryText}
</span>
)}
</>
)}
>
{/* The wrapper (sibling of the header row, so clicks inside never
toggle it) carries the expanded body and the Inspect pill below. */}
<div className={css.bodyWrap}>
{terminalBody !== null
? (
<TerminalBlock
{...terminalBody.card}
maxLines={Infinity}
labels={terminalBlockLabels(t)}
className={css.terminalBody}
/>
)
: diffBody !== null
? <DiffBlock {...diffBody.card} maxLines={CHAT_DIFF_MAX_LINES} className={css.diffBody} />
: readBody !== null
? <ReadBlock {...readBody} maxLines={CHAT_READ_MAX_LINES} className={css.readBody} />
: searchBody !== null
? (
<>
<SearchBlock {...searchBody.card} maxLines={CHAT_SEARCH_MAX_LINES} className={css.searchBody} />
{/* A capped search's recovery locator lives only in the result
text; show it below the card so the dropped rows survive. */}
{searchBody.recovery !== undefined && (
<div className={css.searchRecovery}>{searchBody.recovery}</div>
)}
</>
)
: webBody !== null
? <WebBlock {...webBody} maxSources={CHAT_WEB_MAX_SOURCES} className={css.webBody} />
: isThink
? <div className={css.thinkBody}>{body}</div>
: (
<>
{variant === 'code' && body !== null && (
<div className={css.bodyScroll}>
<CodeBlock code={body} lang="typescript" copyLabel={t('copy')} copiedLabel={t('copied')} className={css.codeBody} />
</div>
)}
{(cardBody !== null || outputText !== null) && (
<div className={css.ioCard}>
{cardBody !== null && (
<div className={css.ioSection}>
<span className={css.ioLabel}>IN</span>
<span className={css.ioText}>{cardBody}</span>
</div>
)}
{cardBody !== null && outputText !== null && (
<span className={css.ioDivider} aria-hidden />
)}
{outputText !== null && (
<div className={css.ioSection}>
<span className={css.ioLabel}>OUT</span>
<span className={css.ioText} data-error={state === 'error' || undefined}>
{outputText}
</span>
</div>
)}
</div>
)}
</>
)}
{inspect !== undefined && (
<button
type="button"
className={css.inspectButton}
onClick={inspect}
>
<IconInspect />
Inspect
</button>
)}
</div>
</DisclosureRow>
</div>
)
}