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import * as React from "react"; |
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|
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interface ButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement> { |
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variant?: "default" | "outline" | "ghost" | "destructive"; |
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size?: "default" | "sm" | "lg" | "icon"; |
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/** |
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* Radix-style slot pattern — when true, Button renders no <button> element |
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* of its own and instead spreads its className + props onto its single |
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* child (typically an <a>). Lets pages compose `<Button asChild><a href="...">` |
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* for upgrade / external links while keeping the Button look and a11y. |
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* |
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* Implementation note: we don't pull in @radix-ui/react-slot. The Pro |
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* pages that use this pattern always pass a single React element child; |
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* cloning it with the merged className + the rest of the props is what |
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* Slot does internally. Keeping this dependency-free saves ~8 KB gzipped |
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* and avoids a third React tree-traversal pass on every render. |
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*/ |
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asChild?: boolean; |
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} |
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|
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const Button = React.forwardRef<HTMLButtonElement, ButtonProps>( |
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( |
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{ |
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className = "", |
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variant = "default", |
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size = "default", |
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asChild = false, |
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children, |
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...props |
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}, |
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ref, |
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) => { |
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const baseClasses = |
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"inline-flex items-center justify-center rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50"; |
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|
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const variantClasses = { |
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default: |
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"bg-blue-600 text-white hover:bg-blue-700 dark:bg-blue-500 dark:hover:bg-blue-600", |
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outline: |
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"border border-gray-300 bg-transparent hover:bg-gray-100 dark:border-gray-600 dark:hover:bg-gray-800", |
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ghost: "hover:bg-gray-100 dark:hover:bg-gray-800", |
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destructive: |
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"bg-red-600 text-white hover:bg-red-700 dark:bg-red-500 dark:hover:bg-red-600", |
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}; |
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|
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const sizeClasses = { |
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default: "h-10 px-4 py-2", |
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sm: "h-9 rounded-md px-3", |
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lg: "h-11 rounded-md px-8", |
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icon: "h-10 w-10", |
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}; |
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|
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const mergedClassName = `${baseClasses} ${variantClasses[variant]} ${sizeClasses[size]} ${className}`; |
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|
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if (asChild && React.isValidElement(children)) { |
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// Clone the single child element and merge our styling + props onto |
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// it. The child keeps its semantics (href, onClick, etc.) and gains |
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// the Button look. Ref forwarding is best-effort — pages that need a |
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// ref on the child should use a real ref directly on the <a>. |
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const child = children as React.ReactElement<{ className?: string }>; |
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const childClassName = (child.props as { className?: string }).className; |
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return React.cloneElement(child, { |
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...(props as object), |
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className: `${mergedClassName}${childClassName ? ` ${childClassName}` : ""}`, |
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} as React.HTMLAttributes<HTMLElement>); |
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} |
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|
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return ( |
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<button className={mergedClassName} ref={ref} {...props}> |
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{children} |
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</button> |
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); |
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}, |
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); |
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Button.displayName = "Button"; |
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|
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export { Button }; |
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