import { IReader } from '@vscode/observables';
import { FixtureRegistry, ComponentDefinition } from '../core/index.js';
import { ExplorerTreeNode } from './types.js';
import { DaemonModel } from '../daemon/index.js';
import { ReportModel } from '../report/ReportModel.js';
import { ReportFixtureItem } from './ReportComparisonRow.js';
export type ViewMode = 'session' | 'diff' | 'report';
/**
 * A fixture item to be rendered in the preview area.
 */
export interface FixtureItem {
    readonly id: string;
    readonly name: string;
    readonly path: string;
    readonly component: ComponentDefinition;
}
/**
 * A screenshot comparison item for diff mode.
 */
export interface ScreenshotComparisonItem {
    readonly fixtureId: string;
    readonly name: string;
    readonly path: string;
}
/**
 * A preview row can be a live fixture, a variant group, or a screenshot comparison.
 */
export type PreviewRow = {
    readonly type: 'single';
    readonly fixture: FixtureItem;
} | {
    readonly type: 'variants';
    readonly id: string;
    readonly name: string;
    readonly path: string;
    readonly fixtures: readonly FixtureItem[];
} | {
    readonly type: 'screenshot-comparison';
    readonly id: string;
    readonly name: string;
    readonly path: string;
    readonly items: readonly ScreenshotComparisonItem[];
} | {
    readonly type: 'report-comparison';
    readonly id: string;
    readonly name: string;
    readonly path: string;
    readonly items: readonly ReportFixtureItem[];
};
declare const ExplorerModel_base: import('@vscode/observables-react').ViewModelClass<{
    registry: import('@vscode/observables-react').IPropertyTransformerFactory<FixtureRegistry, FixtureRegistry>;
    daemonModel: import('@vscode/observables-react').IPropertyTransformerFactory<DaemonModel | undefined, DaemonModel | undefined>;
    reportModel: import('@vscode/observables-react').IPropertyTransformerFactory<ReportModel | undefined, ReportModel | undefined>;
}>;
export declare class ExplorerModel extends ExplorerModel_base {
    readonly leftSidebarVisible: import('@vscode/observables').ISettableObservable<boolean, void>;
    readonly rightSidebarVisible: import('@vscode/observables').ISettableObservable<boolean, void>;
    readonly isDarkTheme: import('@vscode/observables').ISettableObservable<boolean, void>;
    readonly selectedNodeId: import('@vscode/observables').ISettableObservable<string | undefined, void>;
    readonly expandedNodeIds: import('@vscode/observables').ISettableObservable<ReadonlySet<string>, void>;
    readonly viewMode: import('@vscode/observables').ISettableObservable<ViewMode, void>;
    get daemonAvailable(): boolean;
    get daemon(): DaemonModel | undefined;
    get reportModel(): ReportModel | undefined;
    get isReportMode(): boolean;
    readonly loading: import('@vscode/observables').IObservableWithChange<boolean, void>;
    readonly searchQuery: import('@vscode/observables').ISettableObservable<string | undefined, void>;
    /** The explorer's tree derived from the registry or report */
    readonly tree: import('@vscode/observables').IObservableWithChange<ExplorerTreeNode, void>;
    readonly filteredTree: import('@vscode/observables').IObservableWithChange<ExplorerTreeNode, void>;
    readonly selectedNode: import('@vscode/observables').IObservableWithChange<ExplorerTreeNode | undefined, void>;
    /** List of preview rows to render based on current selection and view mode */
    readonly selectedFixtures: import('@vscode/observables').IObservableWithChange<readonly PreviewRow[], void>;
    setViewMode: (mode: ViewMode) => void;
    navigateToSession: (sessionName: string) => void;
    toggleLeftSidebar: () => void;
    toggleRightSidebar: () => void;
    toggleTheme: () => void;
    selectNode: (nodeId: string) => void;
    toggleNodeExpanded: (nodeId: string) => void;
    isNodeExpanded(nodeId: string, reader: IReader): boolean;
    private _initialExpandedNodes;
    private _findNode;
    private _collectPreviewRows;
    /**
     * In diff mode: fixtures become screenshot comparison items showing current vs baseline.
     * Variants become comparison groups.
     */
    private _collectDiffRows;
    private _collectReportRows;
}
export {};
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