/**
* @license Copyright (c) 2003-2026, CKSource Holding sp. z o.o. All rights reserved.
* For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-licensing-options
*/
/**
* @module revision-history/revisionhistoryutils
*/
import { Plugin } from "@ckeditor/ckeditor5-core";
import type { RevisionHistoryAdapter } from "./revisionhistoryadapter.js";
import type { Revision } from "./revision.js";
/**
* Common utilities used by plugins in the revision history package.
*/
export declare class RevisionHistoryUtils extends Plugin {
	static get pluginName(): "RevisionHistoryUtils";
	/**
	* @inheritDoc
	*/
	static override get isOfficialPlugin(): true;
	/**
	* @inheritDoc
	*/
	static override get isPremiumPlugin(): true;
	/**
	* Loads {@link module:revision-history/revision~Revision#diffData} of a specified `revision` if it has not been loaded yet.
	*/
	loadRevisionData(revision: Revision, adapter: RevisionHistoryAdapter | null): Promise<void>;
	/**
	* Returns document data for given revision.
	*
	* The document data is HTML or a different format, depending on the editor configuration.
	*
	* This method returns a promise which resolves with an object, where keys are root names and values are these roots' data. Most
	* editor setups use just one root, which has the default name `main`. In this case, the promise will resolve with an object
	* similar to this:
	*
	* ```ts
	* { main: "<p>Sample document data.</p>" }
	* ```
	*
	* Please note, that the data returned by this method uses
	* {@link module:engine/dataprocessor/dataprocessor~DataProcessor#useFillerType marked fillers mode}. This means that some `&nbsp;`
	* characters in the returned data may be wrapped with `<span data-cke-filler="true">&nbsp;</span>`. Take this difference into
	* consideration if you plan to compare revision data with the data returned by `editor.getData()`.
	*
	* See also {@link module:revision-history/revisionhistoryutils~RevisionHistoryUtils#getRevisionRootsAttributes}.
	*/
	getRevisionDocumentData(revision: Revision): Record<string, string>;
	/**
	* Returns roots attributes for given revision.
	*
	* This method returns a promise which resolves with an object, where keys are root names and values are these roots' attributes.
	*
	* Most editor setups use just one root, which has the default name `main`. Also, most editor setup do not use any root attributes.
	* In this case, the promise will resolve with following object:
	*
	* ```ts
	* { main: {} }
	* ```
	*
	* See also {@link module:revision-history/revisionhistoryutils~RevisionHistoryUtils#getRevisionDocumentData}.
	*/
	getRevisionRootsAttributes(revision: Revision): Record<string, Record<string, unknown>>;
	/**
	* Returns model element names for given revision's roots.
	*
	* The result is keyed by root name and values are the model element names recorded for each root in the revision
	* (e.g. `'$root'`, `'$inlineRoot'`, or any custom `modelElement` configured at the time the revision was saved).
	*
	* Roots whose revision data does not carry a `rootElementName` (legacy revisions saved before this field existed)
	* are omitted from the result. Detached roots are also omitted, mirroring the behaviour of the other
	* `getRevisionRoots*` helpers.
	*/
	getRevisionRootsModelElements(revision: Revision): Record<string, string>;
}