import type { Element } from "../../tui/elements.js";
import type { KeyEvent } from "../../tui/input/types.js";
import type { TreeNode } from "../types.js";
import type { ViewAction, Viewport } from "../views/view.js";
import type { Screen } from "./screen.js";
export declare class OverviewScreen implements Screen {
    private roots;
    private traceId;
    private readonly contextWindowOf;
    readonly screenName: "overview";
    private data;
    private deltas;
    private selectedId;
    private returnFocusId;
    private previewMode;
    /** Which side the paging and end keys act on. */
    private pane;
    private scrollOffsets;
    private systemsExpanded;
    private historyExpanded;
    private fullResults;
    /** The input preview opens on the call's new messages until scrolled. */
    private inputAtNew;
    private get scrollTop();
    private set scrollTop(value);
    private message;
    private following;
    private previewRoom;
    private previewLength;
    private previewCache;
    private callPageSize;
    constructor(roots: TreeNode[], traceId: string, contextWindowOf: (model: string) => number | undefined);
    private bindings;
    handleKey(event: KeyEvent, viewport: Viewport): ViewAction;
    helpLines(): string[];
    render(viewport: Viewport, sharedHints?: string): Element;
    setData(roots: TreeNode[]): void;
    focusId(): string | undefined;
    /** The call the charts highlight, never the tool the person came from. */
    selectedRowId(): string | undefined;
    setFocus(id: string): void;
    setTrace(traceId: string): void;
    escape(): boolean;
    applySearch(_query: string): void;
    notify(message: string): void;
    setFollowIndicator(on: boolean): void;
    private derive;
    private selected;
    private moveCall;
    private selectCall;
    private resetPreview;
    private selectedDelta;
    /** `x` applies to both previews. The output restarts at its top; the
     *  input keeps its scroll, like `s`, so the result opened is still in view. */
    private toggleResults;
    private toggleHistory;
    /** The scroll stays put, so a prompt opened from the history is still in view. */
    private toggleSystems;
    /** Ctrl+F/B/D/U: whole or half pages of calls or of preview lines. */
    private page;
    /** g/G, Home/End: the first or last call, or the preview's top or end. */
    private toEnd;
    private movePreview;
    /** In the input, the NEW divider may be the top row even when the new
     *  messages beneath it do not fill the pane. */
    private scrollPreview;
    private preview;
    private scrollStatus;
}