import { BaseCellAnchorXform } from "./base-cell-anchor-xform.js";
interface TwoCellModel {
    range: {
        editAs?: string;
        tl: any;
        br: any;
    };
    picture?: any;
    shape?: any;
    /** Graphic frame model (for charts and other embedded objects) */
    graphicFrame?: any;
    /** Wrap the anchor in mc:AlternateContent for modern drawing clients */
    alternateContent?: {
        requires: string;
    };
}
declare class TwoCellAnchorXform extends BaseCellAnchorXform {
    private _acDepth;
    private _inFallback;
    private _fallbackDepth;
    private _choiceRequires;
    constructor();
    get tag(): string;
    prepare(model: TwoCellModel, options: {
        index: number;
    }): void;
    render(xmlStream: any, model: TwoCellModel): void;
    /**
     * Emit the ChartEx `<mc:AlternateContent>` block that occupies the
     * shape slot inside a `<xdr:twoCellAnchor>` — between `<xdr:to>`
     * and `<xdr:clientData>`.
     *
     * Structure mirrors Microsoft Excel's own output:
     *
     *   <mc:AlternateContent>
     *     <mc:Choice Requires="cx1" xmlns:cx1="…/2015/9/8/chartex">
     *       <xdr:graphicFrame>…<cx:chart/>…</xdr:graphicFrame>
     *     </mc:Choice>
     *     <mc:Fallback>
     *       <xdr:sp>…placeholder shape…</xdr:sp>
     *     </mc:Fallback>
     *   </mc:AlternateContent>
     *
     * Both the Choice graphicFrame and the Fallback shape inherit
     * sizing from the outer `<xdr:from>`/`<xdr:to>` cell range — they
     * do NOT each re-declare the anchor; there is only one anchor.
     */
    private renderChartExAlternateContent;
    /**
     * Emit the placeholder `<xdr:sp>` that lives inside the
     * `<mc:Fallback>` of a ChartEx anchor. Legacy Excel (2010/2013)
     * and non-Microsoft loaders that don't understand the `cx1`
     * namespace render this in place of the `cx:chart`.
     *
     * Matches Microsoft Excel's convention: cNvPr id=0 / empty name
     * (a deliberate placeholder, not a real drawing object), a white
     * rectangle sized to the anchor's cell range, and the localizable
     * "This chart isn't available" message. The shape's own xfrm
     * carries concrete EMU values rather than zeros because the
     * Fallback expansion is meant to be rendered standalone — a
     * zero-size shape would collapse and Excel 2016+ flags that as
     * "drawing shape" validation failure even though the outer
     * twoCellAnchor provides sizing.
     */
    private renderChartExFallbackShape;
    parseOpen(node: any): boolean;
    parseText(text: string): void;
    parseClose(name: string): boolean;
    reconcile(model: any, options: any): void;
}
export { TwoCellAnchorXform };