/*************************************************************
 *
 *  Copyright (c) 2018 The MathJax Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

/**
 * @fileoverview  Implements the CHTMLmglyph wrapper for the MmlMglyph object
 *
 * @author dpvc@mathjax.org (Davide Cervone)
 */

import {CHTMLWrapper, CHTMLConstructor} from '../Wrapper.js';
import {CommonMglyph, CommonMglyphMixin} from '../../common/Wrappers/mglyph.js';
import {MmlMglyph} from '../../../core/MmlTree/MmlNodes/mglyph.js';
import {StyleList, StyleData} from '../../common/CssStyles.js';

/*****************************************************************/
/**
 * The CHTMLmglyph wrapper for the MmlMglyph object
 *
 * @template N  The HTMLElement node class
 * @template T  The Text node class
 * @template D  The Document class
 */
export class CHTMLmglyph<N, T, D> extends CommonMglyphMixin<CHTMLConstructor<any, any, any>>(CHTMLWrapper) {

    public static kind = MmlMglyph.prototype.kind;

    public static styles: StyleList = {
        'mjx-mglyph > img': {
            display: 'inline-block',
            border: 0,
            padding: 0
        }
    };

    /**
     * @override
     */
    public toCHTML(parent: N) {
        const chtml = this.standardCHTMLnode(parent);
        const {src, alt} = this.node.attributes.getList('src', 'alt');
        const styles: StyleData = {
            width: this.em(this.width),
            height: this.em(this.height)
        };
        if (this.voffset) {
            styles.verticalAlign = this.em(-this.voffset);
        }
        const img = this.html('img', {src: src, style: styles, alt: alt, title: alt});
        this.adaptor.append(chtml, img);
    }

}