/**
* @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 remove-format/removeformatcommand
*/
import type { ModelDocumentSelection, ModelItem, ModelRange, ModelWriter } from "@ckeditor/ckeditor5-engine";
import { Command } from "@ckeditor/ckeditor5-core";
/**
* The remove format command.
*
* It is used by the {@link module:remove-format/removeformat~RemoveFormat remove format feature}
* to clear the formatting in the selection.
*
* ```ts
* editor.execute( 'removeFormat' );
* ```
*/
export declare class RemoveFormatCommand extends Command {
	value: boolean;
	/**
	* List of all registered custom attribute handlers.
	*/
	private _customAttributesHandlers;
	/**
	* @inheritDoc
	*/
	override refresh(): void;
	/**
	* @inheritDoc
	*/
	override execute(): void;
	/**
	* Registers a custom attribute handler that will be used to determine if an attribute is formatting and how to remove it.
	*
	* @internal
	*/
	registerCustomAttribute(isFormatting: IsFormattingCallback, removeFormatting: RemoveFormattingCallback): void;
	/**
	* Helper method that removes a formatting attribute from an item either using custom callbacks or writer remove attribute.
	*/
	private _removeFormatting;
	/**
	* Returns an iterable of items in a selection (including the selection itself) that have formatting model
	* attributes to be removed by the feature.
	*/
	private _getFormattingItems;
	/**
	* Returns an iterable of formatting attributes of a given model item.
	*
	* **Note:** Formatting items have the `isFormatting` property set to `true`.
	*
	* @returns The names of formatting attributes found in a given item.
	*/
	private _getFormattingAttributes;
}
/**
* Callback that checks if an attribute is a formatting attribute.
*
* @internal
*/
export type IsFormattingCallback = (attributeName: string, item: ModelItem | ModelDocumentSelection) => boolean;
/**
* Callback that removes formatting from an item.
*
* @internal
*/
export type RemoveFormattingCallback = (attributeName: string, range: ModelRange, writer: ModelWriter) => void;