import { Panel, ViewTab } from './ViewPanel.vue';
/**
 * ResizableView — a VSCode-like multi-panel editor layout.
 *
 * CONCEPTS
 * ─────────
 * Panel  — a leaf node: holds an ordered list of tabs, one of which is active.
 * Group  — an inner node: an array that contains Panels and/or nested Groups.
 *          Groups alternate direction by depth:
 *            depth 1 (views[])      → horizontal  <Resizable>
 *            depth 2 (item1[])      → vertical    <Resizable vertical>
 *            depth 3 (item2[])      → horizontal  <Resizable>
 *          Three levels of nesting therefore support h → v → h splits.
 *
 * TREE SHAPE
 * ──────────
 * `views` is a Level1Item[] whose elements are either a Panel (rendered
 * directly) or a Level2Item[] Group (rendered as a nested Resizable).
 *
 *   views = [
 *     panelA,                        // full-width single panel
 *     [ panelB, panelC ],            // vertical split: B above C
 *     [ [ panelD, panelE ], panelF ] // vertical: (D|E horizontal) above F
 *   ]
 *
 * DRAG & DROP
 * ───────────
 * Shared drag state (`dragState`) is stored here and injected into every
 * ViewPanel via provide/inject under the key '$vrp'. Each ViewPanel has two
 * independent drop zones:
 *
 *   Tabs bar  — reorders tabs; dropped tab becomes active in the target panel.
 *   Content   — splits the panel (left/right/top/bottom) or appends (center).
 */
type Level3Item = Panel;
type Level2Item = Panel | Level3Item[];
type Level1Item = Panel | Level2Item[];
type __VLS_Slots = {
    tab: (props: {
        tab: ViewTab | undefined;
        panel: Panel;
    }) => any;
};
type __VLS_ModelProps = {
    modelValue?: Level1Item[];
};
declare const __VLS_base: import('vue').DefineComponent<__VLS_ModelProps, {}, {}, {}, {}, import('vue').ComponentOptionsMixin, import('vue').ComponentOptionsMixin, {
    "update:modelValue": (value: Level1Item[]) => any;
}, string, import('vue').PublicProps, Readonly<__VLS_ModelProps> & Readonly<{
    "onUpdate:modelValue"?: ((value: Level1Item[]) => any) | undefined;
}>, {}, {}, {}, {}, string, import('vue').ComponentProvideOptions, false, {}, any>;
declare const __VLS_export: __VLS_WithSlots<typeof __VLS_base, __VLS_Slots>;
declare const _default: typeof __VLS_export;
export default _default;
type __VLS_WithSlots<T, S> = T & {
    new (): {
        $slots: S;
    };
};