68 lines
1.6 KiB
JavaScript
68 lines
1.6 KiB
JavaScript
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export function fillEmpty(headings) {
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for (let i = 0; i < headings.length; i += 1) {
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let j = headings[i - 1]?.level || 0;
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if (headings[i].level - j > 1) {
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while (j < headings[i].level) {
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headings.splice(i, 0, { level: j + 1, text: '' });
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j += 1;
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}
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}
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}
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return headings;
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}
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const exitHeadingBranch = (heading, targetLevel) => {
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let currentHeading = heading;
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while (currentHeading.level > targetLevel) {
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currentHeading = currentHeading.parent;
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}
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return currentHeading;
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};
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export function toTree(headings) {
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fillEmpty(headings);
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const tree = [];
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let currentHeading;
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for (let i = 0; i < headings.length; i += 1) {
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const heading = headings[i];
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if (heading.level === 1) {
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const h = { ...heading, subHeadings: [] };
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tree.push(h);
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currentHeading = h;
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} else if (heading.level > currentHeading.level) {
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const h = { ...heading, subHeadings: [], parent: currentHeading };
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currentHeading.subHeadings.push(h);
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currentHeading = h;
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} else if (heading.level <= currentHeading.level) {
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currentHeading = exitHeadingBranch(currentHeading, heading.level - 1);
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const h = { ...heading, subHeadings: [], parent: currentHeading };
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(currentHeading?.subHeadings || headings).push(h);
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currentHeading = h;
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}
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}
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return tree;
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}
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export function getHeadings(editor) {
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const headings = [];
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editor.state.doc.descendants((node) => {
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if (node.type.name !== 'heading') return false;
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headings.push({
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level: node.attrs.level,
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text: node.textContent,
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});
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return true;
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});
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return toTree(headings);
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}
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