/*************************************************************
 *
 *  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 CommonMtd wrapper mixin for the MmlMtd object
 *
 * @author dpvc@mathjax.org (Davide Cervone)
 */

import {AnyWrapper, WrapperConstructor, Constructor} from '../Wrapper.js';
import {CommonMtable} from '../../common/Wrappers/mtable.js';
import {CommonMtr} from '../../common/Wrappers/mtr.js';
import {BBox} from '../BBox.js';

/*****************************************************************/
/**
 * The CommonMtd interface
 */
export interface CommonMtd extends AnyWrapper {
}

/**
 * Shorthand for the CommonMtd constructor
 */
export type MtdConstructor = Constructor<CommonMtd>;

/*****************************************************************/
/**
 *  The CommonMtd wrapper mixin for the MmlMtd object
 *
 * @template T  The Wrapper class constructor type
 */
export function CommonMtdMixin<T extends WrapperConstructor>(Base: T): MtdConstructor & T {
    return class extends Base {

        /**
         * @override
         */
        get fixesPWidth() {
            return false;
        }

        /**
         * @override
         */
        public invalidateBBox() {
            this.bboxComputed = false;
        }

        /**
         * @override
         */
        public getWrapWidth(j: number) {
            const table = this.parent.parent as any as CommonMtable<AnyWrapper, CommonMtr<AnyWrapper>>;
            const row = this.parent as CommonMtr<AnyWrapper>;
            const i = this.node.childPosition() - (row.labeled ? 1 : 0);
            return (typeof(table.cWidths[i]) === 'number' ? table.cWidths[i] : table.getTableData().W[i]) as number;
        }

        /**
         * @override
         */
        public getChildAlign(i: number) {
            return this.node.attributes.get('columnalign') as string;
        }

    };

}