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import type { VaultEntry } from '../types'
import { cn } from '@/lib/utils'
import { X } from 'lucide-react'
import { Plus, Columns, ArrowsOutSimple } from '@phosphor-icons/react'
interface Tab {
entry: VaultEntry
content: string
}
interface TabBarProps {
tabs: Tab[]
activeTabPath: string | null
onSwitchTab: (path: string) => void
onCloseTab: (path: string) => void
onCreateNote?: () => void
onReorderTabs?: (fromIndex: number, toIndex: number) => void
}
const DISABLED_ICON_STYLE = { opacity: 0.4, cursor: 'not-allowed' } as const
export const TabBar = memo(function TabBar({
tabs, activeTabPath, onSwitchTab, onCloseTab, onCreateNote, onReorderTabs,
}: TabBarProps) {
const [dragIndex, setDragIndex] = useState<number | null>(null)
const [dropIndex, setDropIndex] = useState<number | null>(null)
const dragNodeRef = useRef<HTMLDivElement | null>(null)
const handleDragStart = useCallback((e: React.DragEvent<HTMLDivElement>, index: number) => {
setDragIndex(index)
e.dataTransfer.effectAllowed = 'move'
e.dataTransfer.setData('text/plain', String(index))
// Make the drag image slightly transparent
Eif (e.currentTarget) {
dragNodeRef.current = e.currentTarget
requestAnimationFrame(() => {
Iif (dragNodeRef.current) {
dragNodeRef.current.style.opacity = '0.5'
}
})
}
}, [])
const handleDragEnd = useCallback(() => {
Eif (dragNodeRef.current) {
dragNodeRef.current.style.opacity = ''
}
dragNodeRef.current = null
setDragIndex(null)
setDropIndex(null)
}, [])
const handleDragOver = useCallback((e: React.DragEvent<HTMLDivElement>, index: number) => {
e.preventDefault()
e.dataTransfer.dropEffect = 'move'
if (dragIndex === null || dragIndex === index) {
setDropIndex(null)
return
}
// Determine drop position based on cursor within the tab
const rect = e.currentTarget.getBoundingClientRect()
const midpoint = rect.left + rect.width / 2
const insertIndex = e.clientX < midpoint ? index : index + 1
setDropIndex(insertIndex)
}, [dragIndex])
const handleDrop = useCallback((e: React.DragEvent<HTMLDivElement>) => {
e.preventDefault()
if (dragIndex !== null && dropIndex !== null && dragIndex !== dropIndex && onReorderTabs) {
// Adjust target index: if dropping after the dragged item, account for removal
const toIndex = dropIndex > dragIndex ? dropIndex - 1 : dropIndex
Eif (toIndex !== dragIndex) {
onReorderTabs(dragIndex, toIndex)
}
}
handleDragEnd()
}, [dragIndex, dropIndex, onReorderTabs, handleDragEnd])
const handleDragLeave = useCallback((e: React.DragEvent<HTMLDivElement>) => {
// Only clear if we're leaving the tab bar entirely
const relatedTarget = e.relatedTarget as HTMLElement | null
if (!e.currentTarget.contains(relatedTarget)) {
setDropIndex(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={handleDragLeave}
>
{tabs.map((tab, index) => {
const isActive = tab.entry.path === activeTabPath
const showDropBefore = dropIndex === index
const showDropAfter = dropIndex === index + 1 && index === tabs.length - 1
return (
<div
key={tab.entry.path}
draggable
onDragStart={(e) => handleDragStart(e, index)}
onDragEnd={handleDragEnd}
onDragOver={(e) => handleDragOver(e, index)}
onDrop={handleDrop}
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: dragIndex !== null ? 'grabbing' : 'grab',
WebkitAppRegion: 'no-drag',
} as React.CSSProperties}
onClick={() => onSwitchTab(tab.entry.path)}
>
{showDropBefore && (
<div
style={{
position: 'absolute',
left: -1,
top: 8,
bottom: 8,
width: 2,
background: 'var(--primary)',
borderRadius: 1,
zIndex: 10,
}}
/>
)}
<span className="truncate">{tab.entry.title}</span>
<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()
onCloseTab(tab.entry.path)
}}
>
<X size={14} />
</button>
{showDropAfter && (
<div
style={{
position: 'absolute',
right: -1,
top: 8,
bottom: 8,
width: 2,
background: 'var(--primary)',
borderRadius: 1,
zIndex: 10,
}}
/>
)}
</div>
)
})}
<div className="flex-1" style={{ borderBottom: '1px solid var(--border)' }} />
<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>
</div>
)
})
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