import { JupyterFrontEndPlugin } from '@jupyterlab/application';
import { CodeEditor } from '@jupyterlab/codeeditor';
import { IRootPosition, IVirtualPosition, WidgetLSPAdapter, Document } from '@jupyterlab/lsp';
import { IRenderMimeRegistry } from '@jupyterlab/rendermime';
import { LabIcon } from '@jupyterlab/ui-components';
import { Throttler } from '@lumino/polling';
import type * as lsProtocol from 'vscode-languageserver-protocol';
import { CodeHover as LSPHoverSettings, ModifierKey } from '../_hover';
import { EditorTooltipManager } from '../components/free_tooltip';
import { ContextAssembler } from '../context';
import { IEditorRange } from '../converter';
import { FeatureSettings, Feature } from '../feature';
import { ISimpleMarkManager } from '../marks';
import { BrowserConsole } from '../virtual/console';
import { VirtualDocument } from '../virtual/document';
export declare const hoverIcon: LabIcon;
interface IResponseData {
    response: lsProtocol.Hover;
    document: VirtualDocument;
    editorRange: IEditorRange;
    ceEditor: CodeEditor.IEditor;
}
declare class ResponseCache {
    maxSize: number;
    protected _data: Array<IResponseData>;
    get data(): IResponseData[];
    constructor(maxSize: number);
    store(item: IResponseData): void;
    clean(): void;
}
interface IContext {
    adapter: WidgetLSPAdapter<any>;
    token: CodeEditor.IToken;
    editor: CodeEditor.IEditor;
    editorAccessor: Document.IEditor;
}
export declare class HoverFeature extends Feature {
    readonly capabilities: lsProtocol.ClientCapabilities;
    readonly id: string;
    tooltipManager: EditorTooltipManager;
    protected console: BrowserConsole;
    protected settings: FeatureSettings<LSPHoverSettings>;
    protected lastHoverCharacter: IRootPosition | null;
    private lastHoverResponse;
    protected hasMarker: boolean;
    protected markManager: ISimpleMarkManager<'hover'>;
    private virtualPosition;
    protected cache: ResponseCache;
    protected contextAssembler: ContextAssembler;
    private debouncedGetHover;
    private tooltip;
    private _previousHoverRequest;
    constructor(options: HoverFeature.IOptions);
    protected createThrottler(): Throttler<Promise<lsProtocol.Hover | null>, void, [VirtualDocument, IVirtualPosition, IContext]>;
    protected get modifierKey(): ModifierKey;
    protected get isHoverAutomatic(): boolean;
    protected restoreFromCache(document: VirtualDocument, virtualPosition: IVirtualPosition): IResponseData | null;
    protected onKeyDown: (event: KeyboardEvent, adapter: WidgetLSPAdapter<any>) => void;
    protected onMouseLeave: (event: MouseEvent) => void;
    protected maybeHideTooltip(mouseEvent: MouseEvent): void;
    afterChange(): void;
    protected getHover: (virtualDocument: VirtualDocument, virtualPosition: IVirtualPosition, context: IContext) => Promise<lsProtocol.Hover | null>;
    protected static getMarkupForHover(response: lsProtocol.Hover): lsProtocol.MarkupContent;
    /**
     * marks the word if a tooltip is available.
     * Displays tooltip if asked to do so.
     *
     * Returns true is the tooltip was shown.
     */
    handleResponse: (adapter: WidgetLSPAdapter<any>, responseData: IResponseData, rootPosition: IRootPosition, showTooltip: boolean) => boolean;
    protected isTokenEmpty(token: CodeEditor.IToken): boolean;
    protected isEventInsideVisible(event: MouseEvent): boolean;
    protected isResponseUseful(response: lsProtocol.Hover): boolean | "";
    /**
     * Returns true if the tooltip should stay.
     */
    protected _updateUnderlineAndTooltip(event: MouseEvent, adapter: WidgetLSPAdapter<any>): Promise<boolean>;
    protected updateUnderlineAndTooltip: (event: MouseEvent, adapter: WidgetLSPAdapter<any>) => Promise<boolean> | undefined;
    protected removeRangeHighlight: () => void;
    remove(): void;
    /**
     * Construct the range to underline manually using the token information.
     */
    private _getEditorRange;
    private _addRange;
}
export declare namespace HoverFeature {
    interface IOptions extends Feature.IOptions {
        settings: FeatureSettings<LSPHoverSettings>;
        renderMimeRegistry: IRenderMimeRegistry;
        contextAssembler: ContextAssembler;
    }
    const id: string;
}
export declare const HOVER_PLUGIN: JupyterFrontEndPlugin<void>;
export {};