import { ChartPptxElement, PptxChartData, PptxElement } from 'pptx-viewer-core';
import { ChartPartRef } from 'pptx-viewer-shared';
/**
 * chart-drag (Svelte): direct on-canvas chart editing, the Svelte port of Vue's
 * `useChartCanvasInteraction` and React's `ChartElementView`.
 *
 * The state machine, the hit-target stylesheet and the highlight all live in
 * `pptx-viewer-shared/render/chart-canvas-drag`; this module is only the runes
 * wrapper, so a fix to the drag maths reaches all five bindings at once.
 *
 * Behaviour: press a bar / dot / slice to select it, drag it vertically to
 * change its value (live local preview, committed ONCE on release so one drag
 * is one undo step), Escape cancels; double-click the title to edit it in
 * place (Enter/blur commits, Escape cancels). The projector always emits the
 * `data-chart-*` hit-testing attributes; they stay pointer-transparent until
 * the root carries `pptx-chart-interactive`, which is why thumbnails and the
 * presentation stage cannot be dragged.
 */
export declare class ChartDragController {
    #private;
    /** Chart data with the in-flight drag applied, or null when idle. */
    preview: PptxChartData | null;
    /** Formatted value for the floating mid-drag badge, or null when idle. */
    label: string | null;
    /** The mark the user last pressed, highlighted until selection moves away. */
    selectedPart: ChartPartRef | null;
    /** Inline title editor draft; null while the editor is closed. */
    titleDraft: string | null;
    constructor(input: {
        element: () => ChartPptxElement;
        root: () => HTMLElement | null;
        commit: (elementId: string, chartData: PptxChartData) => void;
    });
    /** The element to render: the committed one, or the drag preview over it. */
    rendered(): PptxElement;
    /** Re-apply the selected-mark highlight; the SVG is re-created every render. */
    syncHighlight(): void;
    onpointerdown: (event: PointerEvent) => void;
    /**
     * Double-click handler for the chart root: opens the inline title editor
     * when the title itself was hit, and otherwise just keeps a mark
     * double-click from bubbling into the element-level inline-text-edit
     * handler (a mark double-click is already handled as two presses).
     */
    ondblclick: (event: MouseEvent) => void;
    setTitleDraft(value: string): void;
    commitTitle(): void;
    cancelTitle(): void;
    /** Release listeners when the chart unmounts mid-drag. */
    destroy(): void;
}
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