/**
 * conversation-viewer.ts — Live conversation overlay for viewing agent sessions.
 *
 * Displays a scrollable, live-updating view of an agent's conversation.
 * Subscribes to session events for real-time streaming updates.
 */
import { type AgentSession } from "@earendil-works/pi-coding-agent";
import { type Component, type TUI } from "@earendil-works/pi-tui";
import type { AgentRecord } from "../types.js";
import type { Theme } from "./agent-widget.js";
import { type AgentActivity } from "./agent-widget.js";
export interface ViewerScrollbarState {
    totalLines: number;
    viewportRows: number;
    scrollOffset: number;
}
export interface ViewerScrollbarThumb {
    start: number;
    size: number;
}
export declare function getViewerScrollbarContentWidth(width: number): number;
export declare function calculateViewerScrollbarThumb(state: ViewerScrollbarState): ViewerScrollbarThumb | null;
export declare function decorateViewerScrollbar(lines: readonly string[], state: ViewerScrollbarState, width: number): string[];
export declare function renderViewerViewportLines(contentLines: readonly string[], visibleStart: number, viewportHeight: number, width: number): string[];
export type ScrollInputAction = "lineUp" | "lineDown" | "pageUp" | "pageDown" | "home" | "end";
export interface ScrollState {
    scrollOffset: number;
    autoScroll: boolean;
}
export declare function getConversationContentCacheKey(record: AgentRecord, activity: AgentActivity | undefined): string;
export declare function getScrollInputAction(data: string): ScrollInputAction | undefined;
export declare function updateScrollState(scrollOffset: number, action: ScrollInputAction, viewportHeight: number, maxScroll: number): ScrollState;
export declare function renderConversationContentLines(tui: TUI, session: AgentSession, record: AgentRecord, activity: AgentActivity | undefined, theme: Theme, width: number): string[];
export declare class ConversationViewer implements Component {
    private scrollOffset;
    private autoScroll;
    private unsubscribe;
    private contentCache;
    private lastInnerW;
    private closed;
    private readonly releaseMouseWheelReporting;
    private readonly tui;
    private readonly session;
    private readonly record;
    private readonly activity;
    private readonly theme;
    private readonly done;
    constructor(tui: TUI, session: AgentSession, record: AgentRecord, activity: AgentActivity | undefined, theme: Theme, done: (result: undefined) => void);
    handleInput(data: string): void;
    render(width: number): string[];
    invalidate(): void;
    dispose(): void;
    private disposeResources;
    private viewportHeight;
    private invalidateContentCache;
    private getContentLines;
    private buildContentLines;
}