import * as React from 'react';
import type { PartProps } from '../contracts/components.js';
export type TopBarRootProps = PartProps<'header'> & {
    /** 'inline' takes layout space; 'overlay' floats over scrolling content. */
    placement?: 'inline' | 'overlay';
    /** MAT seam: maps to ScrollEdge edgeStyle. 'none' renders no edge. */
    scrollEdge?: 'soft' | 'hard' | 'none';
    /** Overrides for the built-in, localizable UI strings. */
    labels?: {
        topBar?: string;
    } | undefined;
};
declare function TopBarRoot({ placement, scrollEdge, labels, children, render, ...rest }: TopBarRootProps): React.JSX.Element;
declare namespace TopBarRoot {
    var displayName: string;
}
declare function TopBarLeading({ children, render, ...rest }: PartProps<'div'>): React.ReactElement<unknown, string | React.JSXElementConstructor<any>>;
declare namespace TopBarLeading {
    var displayName: string;
}
declare function TopBarTitle({ children, render, ...rest }: PartProps<'div'>): React.ReactElement<unknown, string | React.JSXElementConstructor<any>>;
declare namespace TopBarTitle {
    var displayName: string;
}
export type TopBarCenterProps = PartProps<'div'> & {
    /** Keep the center slot visible below the compact breakpoint. */
    keepCenter?: boolean;
};
declare function TopBarCenter({ keepCenter, children, render, ...rest }: TopBarCenterProps): React.ReactElement<unknown, string | React.JSXElementConstructor<any>>;
declare namespace TopBarCenter {
    var displayName: string;
}
declare function TopBarTrailing({ children, render, ...rest }: PartProps<'div'>): React.ReactElement<unknown, string | React.JSXElementConstructor<any>>;
declare namespace TopBarTrailing {
    var displayName: string;
}
export declare const TopBar: {
    Root: typeof TopBarRoot;
    Leading: typeof TopBarLeading;
    Title: typeof TopBarTitle;
    Center: typeof TopBarCenter;
    Trailing: typeof TopBarTrailing;
};
export {};
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