46 lines
1.8 KiB
JavaScript
46 lines
1.8 KiB
JavaScript
import * as DomUtil from '../common/dom_util.js';
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import { SemanticType } from '../semantic_tree/semantic_meaning.js';
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import { MMLTAGS } from '../semantic_tree/semantic_util.js';
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import { AbstractEnrichCase } from './abstract_enrich_case.js';
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import * as EnrichMathml from './enrich_mathml.js';
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import { setAttributes } from './enrich_attr.js';
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export class CaseTable extends AbstractEnrichCase {
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static test(semantic) {
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return (semantic.type === SemanticType.MATRIX ||
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semantic.type === SemanticType.VECTOR ||
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semantic.type === SemanticType.CASES);
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}
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constructor(semantic) {
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super(semantic);
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this.inner = [];
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this.mml = semantic.mathmlTree;
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}
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getMathml() {
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const lfence = EnrichMathml.cloneContentNode(this.semantic.contentNodes[0]);
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const rfence = this.semantic.contentNodes[1]
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? EnrichMathml.cloneContentNode(this.semantic.contentNodes[1])
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: null;
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this.inner = this.semantic.childNodes.map(EnrichMathml.walkTree);
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if (!this.mml) {
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this.mml = EnrichMathml.introduceNewLayer([lfence].concat(this.inner, [rfence]), this.semantic);
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}
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else if (DomUtil.tagName(this.mml) === MMLTAGS.MFENCED) {
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const children = this.mml.childNodes;
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this.mml.insertBefore(lfence, children[0] || null);
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if (rfence) {
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this.mml.appendChild(rfence);
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}
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this.mml = EnrichMathml.rewriteMfenced(this.mml);
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}
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else {
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const newChildren = [lfence, this.mml];
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if (rfence) {
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newChildren.push(rfence);
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}
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this.mml = EnrichMathml.introduceNewLayer(newChildren, this.semantic);
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}
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setAttributes(this.mml, this.semantic);
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return this.mml;
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}
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}
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