/*************************************************************
 *
 *  Copyright (c) 2017 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 SVGTextNode wrapper for the TextNode object
 *
 * @author dpvc@mathjax.org (Davide Cervone)
 */

import {TextNode} from '../../../core/MmlTree/MmlNode.js';
import {SVGWrapper, SVGConstructor} from '../Wrapper.js';
import {CommonTextNode, CommonTextNodeMixin} from '../../common/Wrappers/TextNode.js';
import {StyleList} from '../../common/CssStyles.js';

/*****************************************************************/
/**
 *  The SVGTextNode wrapper for the TextNode object
 *
 * @template N  The HTMLElement node class
 * @template T  The Text node class
 * @template D  The Document class
 */
export class SVGTextNode<N, T, D> extends CommonTextNodeMixin<SVGConstructor<N, T, D>>(SVGWrapper) {

    public static kind = TextNode.prototype.kind;

    public static styles: StyleList = {
        '.MathJax path': {
            'stroke-width': 3
        }
    };

    /**
     * @override
     */
    public toSVG(parent: N) {
        const text = (this.node as TextNode).getText();
        if (this.parent.variant === '-explicitFont') {
            this.adaptor.append(parent, this.jax.unknownText(text, this.parent.variant));
        } else {
            const c = this.parent.stretch.c;
            const chars = this.parent.remapChars(c ? [c] : this.unicodeChars(text));
            let x = 0;
            for (const n of chars) {
                x += this.placeChar(n, x, 0, parent, this.parent.variant);
            }
        }
        this.element = this.adaptor.lastChild(parent);
    }

}