358ee9b7f4
Add React.memo to display components and useCallback/useMemo for better performance. Changes: - Added React.memo to TaskCard component - Added React.memo to StoryCard component - Added React.memo to KanbanBoard component - Added React.memo to KanbanColumn component - Added useCallback to kanban page drag handlers (handleDragStart, handleDragEnd) - Added useCallback to epics page handlers (handleDelete, getStatusColor, getPriorityColor) - Added useMemo for expensive computations in dashboard page (stats, recentProjects sorting) - Added useMemo for total tasks calculation in KanbanBoard - Removed unused isConnected variable from kanban page Performance improvements: - Reduced unnecessary re-renders in Card components - Optimized list rendering performance with memoized callbacks - Improved filtering and sorting performance with useMemo - Better React DevTools Profiler metrics 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
57 lines
2.0 KiB
TypeScript
57 lines
2.0 KiB
TypeScript
'use client';
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import React, { useMemo } from 'react';
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import { TaskCard } from './TaskCard';
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import type { LegacyKanbanBoard } from '@/types/kanban';
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interface KanbanBoardProps {
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board: LegacyKanbanBoard;
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}
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// Legacy KanbanBoard component using old Kanban type
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// For new Issue-based Kanban, use the page at /projects/[id]/kanban
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export const KanbanBoard = React.memo(function KanbanBoard({ board }: KanbanBoardProps) {
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const totalTasks = useMemo(() => {
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return board.columns.reduce((acc, col) => acc + col.tasks.length, 0);
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}, [board.columns]);
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return (
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<div className="space-y-4">
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<div className="flex items-center justify-between">
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<h2 className="text-2xl font-bold">{board.projectName}</h2>
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<p className="text-sm text-muted-foreground">
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Total tasks: {totalTasks}
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</p>
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</div>
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<div className="flex gap-4 overflow-x-auto pb-4">
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{board.columns.map((column) => (
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<div
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key={column.status}
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className="flex min-w-[300px] flex-col rounded-lg border-2 bg-muted/50 p-4"
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>
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<div className="mb-4 flex items-center justify-between">
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<h3 className="font-semibold">{column.title}</h3>
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<span className="rounded-full bg-background px-2 py-0.5 text-xs font-medium">
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{column.tasks.length}
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</span>
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</div>
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<div className="flex-1 space-y-3">
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{column.tasks.map((task) => (
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<TaskCard key={task.id} task={task} />
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))}
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{column.tasks.length === 0 && (
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<div className="flex h-32 items-center justify-center rounded-lg border-2 border-dashed border-muted-foreground/25">
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<p className="text-sm text-muted-foreground">No tasks</p>
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</div>
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)}
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</div>
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</div>
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))}
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</div>
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<p className="text-xs text-muted-foreground">
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Note: Drag-and-drop functionality will be implemented in Sprint 2
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</p>
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</div>
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);
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});
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