@ckeditor/ckeditor5-basic-styles/src/superscript/superscriptediting.js

Basic styles feature for CKEditor 5.

/**
 * @license Copyright (c) 2003-2023, CKSource Holding sp. z o.o. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-oss-license
 */
/**
 * @module basic-styles/superscript/superscriptediting
 */
import { Plugin } from 'ckeditor5/src/core';
import AttributeCommand from '../attributecommand';
const SUPERSCRIPT = 'superscript';
/**
 * The superscript editing feature.
 *
 * It registers the `super` command and introduces the `super` attribute in the model which renders to the view
 * as a `<super>` element.
 */
export default class SuperscriptEditing extends Plugin {
    /**
     * @inheritDoc
     */
    static get pluginName() {
        return 'SuperscriptEditing';
    }
    /**
     * @inheritDoc
     */
    init() {
        const editor = this.editor;
        // Allow super attribute on text nodes.
        editor.model.schema.extend('$text', { allowAttributes: SUPERSCRIPT });
        editor.model.schema.setAttributeProperties(SUPERSCRIPT, {
            isFormatting: true,
            copyOnEnter: true
        });
        // Build converter from model to view for data and editing pipelines.
        editor.conversion.attributeToElement({
            model: SUPERSCRIPT,
            view: 'sup',
            upcastAlso: [
                {
                    styles: {
                        'vertical-align': 'super'
                    }
                }
            ]
        });
        // Create super command.
        editor.commands.add(SUPERSCRIPT, new AttributeCommand(editor, SUPERSCRIPT));
    }
}