import React from "react";
import type { UploadRequestFn } from "../../../types";
/**
 * Sender 专用状态 Context
 * 仅包含 Sender 需要的字段，避免 messages 变化导致 Sender 重渲染和焦点丢失
 */
export interface ChatSenderStateContextType {
    loading: boolean;
    uploadRequest?: UploadRequestFn;
    /** Provider 级上传开关，默认布局可直接继承 config.allowUpload。 */
    allowUpload: boolean;
    /** Provider 级拖拽上传开关，默认布局仍可通过同名 prop 局部覆盖。 */
    draggable: boolean;
    /** Sender 输入框受控值 */
    senderValue: string;
    /** 更新 Sender 输入框值 */
    setSenderValue: React.Dispatch<React.SetStateAction<string>>;
}
export declare const ChatSenderStateContext: React.Context<ChatSenderStateContextType | null>;
export declare const useChatSenderState: () => ChatSenderStateContextType;