/**
 * @license
 * Copyright 2023 Nuraly, Laabidi Aymen
 * SPDX-License-Identifier: MIT
 */
import { LitElement, nothing, PropertyValues, TemplateResult } from 'lit';
import type { ChatbotArtifact } from '../chatbot.types.js';
import { type Canonicalize } from './artifact-diff.js';
type TabId = 'json' | 'diff' | 'patch';
type ViewMode = 'auto' | TabId;
/**
 * Renders an artifact's content with a JSON / Diff / Patch tab toggle when the
 * artifact carries edit metadata (`previousContent`, `patch`). For plain
 * artifacts only the JSON tab applies and the tab bar is hidden. The diff is a
 * dependency-free line-by-line LCS render styled to read like a code review.
 */
export declare class NrArtifactDiffViewElement extends LitElement {
    artifact: ChatbotArtifact;
    canonicalize: Canonicalize;
    /** 'auto' shows the JSON/Diff/Patch tab bar. A fixed view renders only that, with no tabs. */
    view: ViewMode;
    private activeTab;
    private artifactKey;
    static styles: import("lit").CSSResult;
    /**
     * Highlight the first diff line containing `needle` and scroll it into view.
     * Used by hosts (e.g. the flow editor) to link a diagram node to its JSON.
     * No-op when the diff is not currently rendered.
     */
    highlightByText(needle: string): boolean;
    clearHighlight(): void;
    /**
     * Highlight the entire object/array value of a top-level-ish property `key`
     * (the opening `"key": {` line through its matching close) and scroll it into
     * view. Block extent is found by indentation, so braces inside string values
     * do not break it. Falls back to a single-line highlight when the property is
     * a scalar. Returns false when the key is not found.
     */
    highlightObjectByKey(key: string): boolean;
    /**
     * Scroll the highlighted block into view only when it is not already visible.
     * If the opening line is on screen we leave the scroll position alone, so
     * hovering nearby nodes does not cause the diff to jump around.
     */
    private scrollLineIntoViewIfNeeded;
    private get meta();
    private get previousContent();
    private get isEdit();
    private get canonicalMode();
    private get hasDiff();
    private get hasPatch();
    private get tabs();
    willUpdate(changed: PropertyValues): void;
    render(): TemplateResult | typeof nothing;
    private renderTabBar;
    private renderTab;
    private renderJson;
    private renderDiff;
    private renderPatch;
}
declare global {
    interface HTMLElementTagNameMap {
        'nr-artifact-diff-view': NrArtifactDiffViewElement;
    }
}
export {};
//# sourceMappingURL=artifact-diff-view.component.d.ts.map