cosmocode / dokuwiki-plugin-prosemirror

import { setBlockType } from 'prosemirror-commands';

import AbstractMenuItemDispatcher from './AbstractMenuItemDispatcher';

import MenuItem from '../MenuItem';

import { svgIcon } from '../MDI';

export default class HeadingMenuItemDispatcher extends AbstractMenuItemDispatcher {

    /**

     * Create an MenuItemDispatcher to set the blocktype to a heading at the given level

     *

     * @param {int} level the level of the heading, from 1 to 6

     */

    constructor(level) {

        super();

        this.level = level;

    }

    isAvailable(schema) { // eslint-disable-line class-methods-use-this

        return !!schema.nodes.heading;

    }

    getMenuItem(schema) {

        if (!this.isAvailable(schema)) {

            throw new Error('Headings not available in this schema!');

        }

        return new MenuItem({

            command: setBlockType(schema.nodes.heading, { level: this.level }),

            icon: svgIcon(`format-header-${this.level}`),

            label: `Heading ${this.level}`,

        });

    }

}