/*************************************************************
 *
 *  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 a base class for SVGmsubsup, SVGmunderover
 *                and their relatives.  (Since munderover can become msubsup
 *                when movablelimits is set, munderover needs to be able to
 *                do the same thing as msubsup in some cases.)
 *
 * @author dpvc@mathjax.org (Davide Cervone)
 */

import {SVGWrapper, SVGConstructor} from '../Wrapper.js';
import {CommonScriptbase, CommonScriptbaseMixin} from '../../common/Wrappers/scriptbase.js';

/*****************************************************************/
/**
 * A base class for msup/msub/msubsup and munder/mover/munderover
 * wrapper implementations
 *
 * @template N  The HTMLElement node class
 * @template T  The Text node class
 * @template D  The Document class
 */
export class SVGscriptbase<N, T, D> extends
CommonScriptbaseMixin<SVGWrapper<N, T, D>, SVGConstructor<N, T, D>>(SVGWrapper) {

    public static kind = 'scriptbase';

    /**
     * Set to true for munderover/munder/mover/msup (Appendix G 13)
     */
    public static useIC: boolean = false;

    /**
     * This gives the common output for msub and msup.  It is overridden
     * for all the others (msubsup, munder, mover, munderover).
     *
     * @override
     */
    public toSVG(parent: N) {
        const svg = this.standardSVGnode(parent);
        const bbox = this.baseChild.getBBox();
        const sbox = this.script.getBBox();
        const [x, v] = this.getOffset(bbox, sbox);
        this.baseChild.toSVG(svg);
        this.script.toSVG(svg);
        this.script.place(bbox.w + x, v);
    }

}