import { type ReactNode, type TextareaHTMLAttributes } from 'react';
import { type VariantProps } from 'class-variance-authority';
declare const rootVariants: (props?: ({
    size?: "sm" | "md" | "lg" | null | undefined;
} & import("class-variance-authority/types").ClassProp) | undefined) => string;
type NativeTextareaProps = Omit<TextareaHTMLAttributes<HTMLTextAreaElement>, 'size' | 'onSubmit' | 'children'>;
/** Curated imperative handle for agent / external automation. */
export interface ChatInputHandle {
    getValue: () => string;
    isEmpty: () => boolean;
    setValue: (value: string) => void;
    clear: () => void;
    submit: () => void;
    focus: () => void;
}
export interface ChatInputProps extends NativeTextareaProps, VariantProps<typeof rootVariants> {
    /** Invoked when the user submits (Cmd/Ctrl+Enter, or send button). */
    onSubmit?: (text: string) => void;
    /** Maximum allowed characters (grapheme clusters via Intl.Segmenter when available). */
    maxLength?: number;
    /** When true, plain Enter submits and Shift+Enter inserts a newline.
     *  Default false (Enter inserts newline; Cmd/Ctrl+Enter submits). */
    submitOnEnter?: boolean;
    /** Minimum visible rows. Default 1. */
    minRows?: number;
    /** Maximum visible rows before the field scrolls. Default 8. */
    maxRows?: number;
    /** Optional attachment handler — when provided, renders the attachment button. */
    onAttach?: (files: FileList) => void;
    /** `accept` forwarded to the hidden file input. */
    accept?: string;
    /** Controls whether the textarea is disabled and submit is blocked. */
    disabled?: boolean;
    /** Optional slot placed between the textarea and the send button. */
    toolbar?: ReactNode;
    /** Visible label above the textarea. When omitted, a visually-hidden label is used. */
    label?: string;
}
export declare const ChatInput: import("react").ForwardRefExoticComponent<ChatInputProps & import("react").RefAttributes<HTMLDivElement>>;
export {};
//# sourceMappingURL=chat-input.d.ts.map