243 lines
8.4 KiB
TypeScript
243 lines
8.4 KiB
TypeScript
"use client";
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import { useRef, useState, type DragEvent } from "react";
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import { useTranslations } from "next-intl";
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import { Mail, Calendar, BookUser, HardDrive, Settings, PenSquare, MailOpen, X, type LucideIcon } from "lucide-react";
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import { cn } from "@/lib/utils";
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import { useProTabStore, type ProTab, type ProTabKind, type ProPaneId } from "@/stores/pro-tab-store";
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/** Custom MIME type used to carry the dragged Pro tab id between handlers. */
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export const PRO_TAB_DRAG_MIME = "application/x-pro-tab-id";
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interface ProTabBarProps {
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/** Tabs belonging to this bar's pane, already filtered + ordered. */
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tabs: ProTab[];
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activeTabId: string | null;
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paneId: ProPaneId;
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onActivate: (id: string) => void;
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onClose: (id: string) => void;
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onDragStateChange?: (dragging: boolean) => void;
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className?: string;
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}
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const TAB_ICONS: Record<ProTabKind, LucideIcon> = {
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mail: Mail,
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calendar: Calendar,
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contacts: BookUser,
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files: HardDrive,
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settings: Settings,
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compose: PenSquare,
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email: MailOpen,
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};
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type DropIndicator = { targetId: string; edge: "before" | "after" } | null;
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export function ProTabBar({
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tabs,
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activeTabId,
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paneId,
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onActivate,
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onClose,
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onDragStateChange,
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className,
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}: ProTabBarProps) {
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const tSidebar = useTranslations("sidebar");
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const reorderTab = useProTabStore((s) => s.reorderTab);
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const moveTabToPane = useProTabStore((s) => s.moveTabToPane);
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const splitOrientation = useProTabStore((s) => s.splitOrientation);
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const [dropIndicator, setDropIndicator] = useState<DropIndicator>(null);
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const dragLeaveTimer = useRef<number | null>(null);
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const isProTabDrag = (e: DragEvent) =>
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e.dataTransfer.types.includes(PRO_TAB_DRAG_MIME);
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const handleDragStart = (e: DragEvent<HTMLDivElement>, tab: ProTab) => {
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e.dataTransfer.setData(PRO_TAB_DRAG_MIME, tab.id);
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e.dataTransfer.effectAllowed = "move";
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onDragStateChange?.(true);
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};
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const handleDragEnd = () => {
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setDropIndicator(null);
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onDragStateChange?.(false);
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};
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const handleTabDragOver = (e: DragEvent<HTMLDivElement>, tab: ProTab) => {
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if (!isProTabDrag(e)) return;
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e.preventDefault();
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e.dataTransfer.dropEffect = "move";
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const rect = e.currentTarget.getBoundingClientRect();
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const edge: "before" | "after" =
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e.clientX < rect.left + rect.width / 2 ? "before" : "after";
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setDropIndicator((prev) =>
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prev && prev.targetId === tab.id && prev.edge === edge
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? prev
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: { targetId: tab.id, edge },
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);
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if (dragLeaveTimer.current !== null) {
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window.clearTimeout(dragLeaveTimer.current);
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dragLeaveTimer.current = null;
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}
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};
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const handleStripDragLeave = (e: DragEvent<HTMLDivElement>) => {
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// Clear the indicator only when the cursor truly leaves the strip; the
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// intermediate dragleave events that fire as the cursor crosses tab
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// boundaries would otherwise flicker the indicator off.
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const next = e.relatedTarget as Node | null;
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if (next && e.currentTarget.contains(next)) return;
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if (dragLeaveTimer.current !== null) window.clearTimeout(dragLeaveTimer.current);
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dragLeaveTimer.current = window.setTimeout(() => {
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setDropIndicator(null);
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dragLeaveTimer.current = null;
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}, 40);
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};
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const handleTabDrop = (e: DragEvent<HTMLDivElement>, tab: ProTab) => {
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if (!isProTabDrag(e)) return;
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e.preventDefault();
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const draggedId = e.dataTransfer.getData(PRO_TAB_DRAG_MIME);
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if (!draggedId || draggedId === tab.id) {
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handleDragEnd();
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return;
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}
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const edge = dropIndicator?.targetId === tab.id ? dropIndicator.edge : "after";
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reorderTab(draggedId, tab.id, edge);
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handleDragEnd();
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};
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// Dropping on the empty trailing area moves the tab to the end of this bar's
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// pane. If the dragged tab was in the other pane, that also moves it here.
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const handleStripEndDrop = (e: DragEvent<HTMLDivElement>) => {
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if (!isProTabDrag(e)) return;
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e.preventDefault();
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const draggedId = e.dataTransfer.getData(PRO_TAB_DRAG_MIME);
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if (!draggedId) {
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handleDragEnd();
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return;
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}
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const last = tabs[tabs.length - 1];
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if (!last) {
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// Bar is empty — move into this pane.
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moveTabToPane(draggedId, paneId, splitOrientation ?? "vertical");
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} else if (last.id !== draggedId) {
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reorderTab(draggedId, last.id, "after");
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}
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handleDragEnd();
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};
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const handleStripEndDragOver = (e: DragEvent<HTMLDivElement>) => {
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if (!isProTabDrag(e)) return;
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e.preventDefault();
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e.dataTransfer.dropEffect = "move";
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const last = tabs[tabs.length - 1];
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if (last) {
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setDropIndicator({ targetId: last.id, edge: "after" });
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}
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};
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return (
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<div
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className={cn(
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"flex items-stretch h-9 bg-secondary px-1 overflow-x-auto scroll-hidden flex-shrink-0",
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className,
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)}
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style={{ borderBottom: '1px solid rgba(128, 128, 128, 0.3)' }}
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role="tablist"
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onDragLeave={handleStripDragLeave}
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>
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{tabs.map((tab) => {
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const Icon = TAB_ICONS[tab.kind];
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const isActive = tab.id === activeTabId;
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const label = tab.title ?? tSidebar(tab.labelKey);
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const showBefore = dropIndicator?.targetId === tab.id && dropIndicator.edge === "before";
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const showAfter = dropIndicator?.targetId === tab.id && dropIndicator.edge === "after";
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return (
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<div
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key={tab.id}
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role="tab"
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aria-selected={isActive}
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data-tab-id={tab.id}
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draggable
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onClick={() => onActivate(tab.id)}
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onMouseDown={(e) => {
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if (e.button === 1 && tab.closeable) {
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e.preventDefault();
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onClose(tab.id);
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}
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}}
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onDragStart={(e) => handleDragStart(e, tab)}
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onDragOver={(e) => handleTabDragOver(e, tab)}
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onDrop={(e) => handleTabDrop(e, tab)}
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onDragEnd={handleDragEnd}
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className={cn(
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"group relative flex items-center gap-1.5 px-3 h-9 text-sm cursor-pointer select-none transition-colors",
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"min-w-0 flex-1 basis-0 max-w-[200px] [min-width:80px]",
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"border-r border-border first:border-l",
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isActive
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? "bg-background text-foreground font-medium"
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: "text-muted-foreground hover:bg-muted hover:text-foreground",
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)}
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style={
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isActive
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? { borderRightColor: 'rgba(128, 128, 128, 0.3)', borderLeftColor: 'rgba(128, 128, 128, 0.3)' }
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: undefined
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}
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>
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<Icon className={cn("w-4 h-4 flex-shrink-0", isActive && "text-primary")} />
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<span className="truncate flex-1 min-w-0" title={label}>{label}</span>
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{tab.closeable && (
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<button
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onClick={(e) => {
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e.stopPropagation();
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onClose(tab.id);
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}}
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className={cn(
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"ml-1 flex items-center justify-center w-4 h-4 rounded-sm transition-colors flex-shrink-0",
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"text-muted-foreground hover:bg-muted-foreground/20 hover:text-foreground",
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!isActive && "opacity-0 group-hover:opacity-100 focus-visible:opacity-100",
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)}
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aria-label={tSidebar("close")}
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tabIndex={isActive ? 0 : -1}
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>
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<X className="w-3 h-3" />
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</button>
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)}
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{isActive && (
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<span
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className="absolute left-0 right-0 -bottom-px h-px bg-background"
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aria-hidden="true"
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/>
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)}
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{showBefore && (
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<span
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className="pointer-events-none absolute top-1 bottom-1 left-0 w-0.5 -translate-x-1/2 bg-primary rounded-full"
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aria-hidden="true"
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/>
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)}
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{showAfter && (
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<span
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className="pointer-events-none absolute top-1 bottom-1 right-0 w-0.5 translate-x-1/2 bg-primary rounded-full"
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aria-hidden="true"
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/>
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)}
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</div>
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);
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})}
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{/* Trailing area soaks up drops past the last tab and lets cross-pane
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moves drop onto an empty bar. */}
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<div
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className="flex-1 min-w-[8px]"
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onDragOver={handleStripEndDragOver}
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onDrop={handleStripEndDrop}
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aria-hidden="true"
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/>
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</div>
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);
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}
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