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import type { VaultEntry, NoteStatus } from '../types'
import { cn } from '@/lib/utils'
import { X } from 'lucide-react'
import { Plus, Columns, ArrowsOutSimple, ArrowLeft, ArrowRight } from '@phosphor-icons/react'
interface Tab {
entry: VaultEntry
content: string
}
interface TabBarProps {
tabs: Tab[]
activeTabPath: string | null
getNoteStatus?: (path: string) => NoteStatus
onSwitchTab: (path: string) => void
onCloseTab: (path: string) => void
onCreateNote?: () => void
onReorderTabs?: (fromIndex: number, toIndex: number) => void
onRenameTab?: (path: string, newTitle: string) => void
canGoBack?: boolean
canGoForward?: boolean
onGoBack?: () => void
onGoForward?: () => void
}
const DISABLED_ICON_STYLE = { opacity: 0.4, cursor: 'not-allowed' } as const
// --- Inline edit ---
/** Inline edit input shown when user double-clicks a tab title. */
function InlineTabEdit({ initialValue, onSave, onCancel }: {
initialValue: string
onSave: (value: string) => void
onCancel: () => void
}) {
const [value, setValue] = useState(initialValue)
const inputRef = useRef<HTMLInputElement>(null)
// Guard against double-fire: Enter calls handleSave, then React unmounts
// the input (editingPath → null), which triggers blur → handleSave again.
const committedRef = useRef(false)
useEffect(() => {
inputRef.current?.select()
}, [])
const handleSave = useCallback(() => {
if (committedRef.current) return
committedRef.current = true
const trimmed = value.trim()
if (trimmed && trimmed !== initialValue) {
onSave(trimmed)
} else {
onCancel()
}
}, [value, initialValue, onSave, onCancel])
return (
<input
ref={inputRef}
value={value}
onChange={(e) => setValue(e.target.value)}
onKeyDown={(e) => {
if (e.key === 'Enter') handleSave()
if (e.key === 'Escape') onCancel()
e.stopPropagation()
}}
onBlur={handleSave}
onClick={(e) => e.stopPropagation()}
onMouseDown={(e) => e.stopPropagation()}
draggable={false}
onDragStart={(e) => e.preventDefault()}
style={{
width: '100%',
minWidth: 40,
maxWidth: 150,
background: 'var(--background)',
border: '1px solid var(--ring)',
borderRadius: 3,
padding: '2px 6px',
fontSize: 12,
fontWeight: 500,
color: 'var(--foreground)',
outline: 'none',
fontFamily: 'inherit',
}}
/>
)
}
// --- Drag-and-drop helpers ---
function computeDropTarget(dragIdx: number | null, dropIdx: number | null): number | null {
if (dragIdx === null || dropIdx === null || dragIdx === dropIdx) return null
const toIndex = dropIdx > dragIdx ? dropIdx - 1 : dropIdx
return toIndex !== dragIdx ? toIndex : null
}
function computeInsertIndex(e: React.DragEvent<HTMLDivElement>, index: number): number {
const rect = e.currentTarget.getBoundingClientRect()
return e.clientX < rect.left + rect.width / 2 ? index : index + 1
}
function useTabDrag(onReorderTabs?: (from: number, to: number) => void) {
const [dragIndex, setDragIndex] = useState<number | null>(null)
const [dropIndex, setDropIndex] = useState<number | null>(null)
// Refs mirror state so event handlers always read the latest values,
// avoiding stale closures when dragover and drop fire in the same frame.
const dragIndexRef = useRef<number | null>(null)
const dropIndexRef = useRef<number | null>(null)
const dragNodeRef = useRef<HTMLDivElement | null>(null)
const onReorderRef = useRef(onReorderTabs)
useEffect(() => { onReorderRef.current = onReorderTabs })
const resetDrag = useCallback(() => {
Eif (dragNodeRef.current) dragNodeRef.current.style.opacity = ''
dragNodeRef.current = null
dragIndexRef.current = null
dropIndexRef.current = null
setDragIndex(null)
setDropIndex(null)
}, [])
const handleDragStart = useCallback((e: React.DragEvent<HTMLDivElement>, index: number) => {
dragIndexRef.current = index
setDragIndex(index)
e.dataTransfer.effectAllowed = 'move'
e.dataTransfer.setData('text/plain', String(index))
dragNodeRef.current = e.currentTarget
requestAnimationFrame(() => {
Iif (dragNodeRef.current) dragNodeRef.current.style.opacity = '0.5'
})
}, [])
const handleDragOver = useCallback((e: React.DragEvent<HTMLDivElement>, index: number) => {
e.preventDefault()
e.dataTransfer.dropEffect = 'move'
const currentDrag = dragIndexRef.current
if (currentDrag === null || currentDrag === index) {
dropIndexRef.current = null
setDropIndex(null)
return
}
const idx = computeInsertIndex(e, index)
dropIndexRef.current = idx
setDropIndex(idx)
}, [])
const handleDrop = useCallback((e: React.DragEvent<HTMLDivElement>) => {
e.preventDefault()
const toIndex = computeDropTarget(dragIndexRef.current, dropIndexRef.current)
if (toIndex !== null && onReorderRef.current) {
onReorderRef.current(dragIndexRef.current!, toIndex)
}
resetDrag()
}, [resetDrag])
const handleBarDragLeave = useCallback((e: React.DragEvent<HTMLDivElement>) => {
const related = e.relatedTarget as HTMLElement | null
if (!e.currentTarget.contains(related)) {
dropIndexRef.current = null
setDropIndex(null)
}
}, [])
return { dragIndex, dropIndex, handleDragStart, handleDragEnd: resetDrag, handleDragOver, handleDrop, handleBarDragLeave }
}
// --- Sub-components ---
function DropIndicator({ side }: { side: 'left' | 'right' }) {
return (
<div style={{
position: 'absolute', [side]: -1, top: 8, bottom: 8,
width: 2, background: 'var(--primary)', borderRadius: 1, zIndex: 10,
}} />
)
}
const STATUS_DOT: Record<string, { color: string; testId: string; title: string }> = {
new: { color: 'var(--accent-green)', testId: 'tab-new-indicator', title: 'New (uncommitted)' },
modified: { color: 'var(--accent-orange)', testId: 'tab-modified-indicator', title: 'Modified (uncommitted)' },
}
function StatusDot({ status }: { status: NoteStatus }) {
const cfg = STATUS_DOT[status]
if (!cfg) return null
return (
<span
className="shrink-0"
style={{ width: 6, height: 6, borderRadius: '50%', background: cfg.color }}
data-testid={cfg.testId}
title={cfg.title}
/>
)
}
function TabItem({ tab, isActive, isEditing, noteStatus, isDragging, showDropBefore, showDropAfter, onSwitch, onClose, onDoubleClick, onRenameSave, onRenameCancel, dragProps }: {
tab: Tab
isActive: boolean
isEditing: boolean
noteStatus: NoteStatus
isDragging: boolean
showDropBefore: boolean
showDropAfter: boolean
onSwitch: () => void
onClose: () => void
onDoubleClick: () => void
onRenameSave: (newTitle: string) => void
onRenameCancel: () => void
dragProps: React.HTMLAttributes<HTMLDivElement>
}) {
return (
<div
draggable={!isEditing}
{...dragProps}
className={cn(
"group flex shrink-0 items-center gap-1.5 whitespace-nowrap max-w-[180px] transition-all relative",
isActive ? "text-foreground" : "text-muted-foreground hover:text-secondary-foreground"
)}
style={{
background: isActive ? 'var(--background)' : 'transparent',
borderRight: `1px solid ${isActive ? 'var(--border)' : 'var(--sidebar-border)'}`,
borderBottom: isActive ? 'none' : '1px solid var(--sidebar-border)',
padding: '0 12px', fontSize: 12,
fontWeight: isActive ? 500 : 400,
cursor: isEditing ? 'default' : isDragging ? 'grabbing' : 'grab',
WebkitAppRegion: 'no-drag',
} as React.CSSProperties}
onClick={() => !isEditing && onSwitch()}
>
{showDropBefore && <DropIndicator side="left" />}
{isEditing ? (
<InlineTabEdit initialValue={tab.entry.title} onSave={onRenameSave} onCancel={onRenameCancel} />
) : (
<span className="truncate" onDoubleClick={(e) => { e.stopPropagation(); onDoubleClick() }}>
{tab.entry.title}
</span>
)}
<StatusDot status={noteStatus} />
<button
className={cn(
"shrink-0 rounded-sm p-0 bg-transparent border-none text-muted-foreground cursor-pointer transition-opacity hover:bg-accent hover:text-foreground",
isActive ? "opacity-100" : "opacity-0 group-hover:opacity-100"
)}
style={{ lineHeight: 0 }}
draggable={false}
onClick={(e) => { e.stopPropagation(); onClose() }}
>
<X size={14} />
</button>
{showDropAfter && <DropIndicator side="right" />}
</div>
)
}
function NavButtons({ canGoBack, canGoForward, onGoBack, onGoForward }: {
canGoBack?: boolean; canGoForward?: boolean; onGoBack?: () => void; onGoForward?: () => void
}) {
return (
<div
className="flex shrink-0 items-center"
style={{
gap: 4, padding: '0 8px',
borderRight: '1px solid var(--sidebar-border)',
borderBottom: '1px solid var(--sidebar-border)',
WebkitAppRegion: 'no-drag',
} as React.CSSProperties}
>
<button
className={cn(
"flex items-center justify-center border-none bg-transparent p-0.5 rounded-sm transition-colors",
canGoBack ? "text-muted-foreground cursor-pointer hover:text-foreground hover:bg-accent" : "text-muted-foreground"
)}
style={canGoBack ? undefined : DISABLED_ICON_STYLE}
disabled={!canGoBack}
onClick={onGoBack}
title="Back (⌘[)"
data-testid="nav-back"
>
<ArrowLeft size={15} />
</button>
<button
className={cn(
"flex items-center justify-center border-none bg-transparent p-0.5 rounded-sm transition-colors",
canGoForward ? "text-muted-foreground cursor-pointer hover:text-foreground hover:bg-accent" : "text-muted-foreground"
)}
style={canGoForward ? undefined : DISABLED_ICON_STYLE}
disabled={!canGoForward}
onClick={onGoForward}
title="Forward (⌘])"
data-testid="nav-forward"
>
<ArrowRight size={15} />
</button>
</div>
)
}
function TabBarActions({ onCreateNote }: { onCreateNote?: () => void }) {
return (
<div
className="flex shrink-0 items-center"
style={{
borderLeft: '1px solid var(--border)', borderBottom: '1px solid var(--border)',
gap: 12, padding: '0 12px', WebkitAppRegion: 'no-drag',
} as React.CSSProperties}
>
<button className="flex items-center justify-center border-none bg-transparent p-0 text-muted-foreground cursor-pointer hover:text-foreground transition-colors" onClick={() => onCreateNote?.()} title="New note">
<Plus size={16} />
</button>
<button className="flex items-center justify-center border-none bg-transparent p-0 text-muted-foreground" style={DISABLED_ICON_STYLE} title="Coming soon" tabIndex={-1}>
<Columns size={16} />
</button>
<button className="flex items-center justify-center border-none bg-transparent p-0 text-muted-foreground" style={DISABLED_ICON_STYLE} title="Coming soon" tabIndex={-1}>
<ArrowsOutSimple size={16} />
</button>
</div>
)
}
// --- Main TabBar ---
export const TabBar = memo(function TabBar({
tabs, activeTabPath, getNoteStatus, onSwitchTab, onCloseTab, onCreateNote, onReorderTabs, onRenameTab,
canGoBack, canGoForward, onGoBack, onGoForward,
}: TabBarProps) {
const { dragIndex, dropIndex, handleDragStart, handleDragEnd, handleDragOver, handleDrop, handleBarDragLeave } = useTabDrag(onReorderTabs)
const [editingPath, setEditingPath] = useState<string | null>(null)
return (
<div
className="flex shrink-0 items-stretch"
style={{ height: 45, background: 'var(--sidebar)', WebkitAppRegion: 'drag' } as React.CSSProperties}
data-tauri-drag-region
onDragLeave={handleBarDragLeave}
>
<NavButtons canGoBack={canGoBack} canGoForward={canGoForward} onGoBack={onGoBack} onGoForward={onGoForward} />
{tabs.map((tab, index) => (
<TabItem
key={tab.entry.path}
tab={tab}
isActive={tab.entry.path === activeTabPath}
isEditing={editingPath === tab.entry.path}
noteStatus={getNoteStatus?.(tab.entry.path) ?? 'clean'}
isDragging={dragIndex !== null}
showDropBefore={dropIndex === index}
showDropAfter={dropIndex === index + 1 && index === tabs.length - 1}
onSwitch={() => onSwitchTab(tab.entry.path)}
onClose={() => onCloseTab(tab.entry.path)}
onDoubleClick={() => onRenameTab && setEditingPath(tab.entry.path)}
onRenameSave={(newTitle) => { setEditingPath(null); onRenameTab?.(tab.entry.path, newTitle) }}
onRenameCancel={() => setEditingPath(null)}
dragProps={{
onDragStart: (e) => handleDragStart(e, index),
onDragEnd: handleDragEnd,
onDragOver: (e) => handleDragOver(e, index),
onDrop: handleDrop,
}}
/>
))}
<div className="flex-1" style={{ borderBottom: '1px solid var(--border)' }} />
<TabBarActions onCreateNote={onCreateNote} />
</div>
)
})
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