sgauthier
6e64e138e2
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28 lines
892 B
JavaScript
28 lines
892 B
JavaScript
import { Transforms } from 'slate';
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import unwrapIfCursorAtStart from '../transforms/unwrapIfCursorAtStart';
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import isCursorAtStartOfNonEmptyHeading from '../locations/isCursorAtStartOfNonEmptyHeading';
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import lowestMatchedAncestor from '../../matchers/lowestMatchedAncestor';
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import areCurrentAndPreviousBlocksOfType from '../locations/areCurrentAndPreviousBlocksOfType';
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import isCursorAtStartOfBlockType from '../locations/isCursorAtStartOfBlockType';
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function keyDownBackspace(editor) {
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if (!editor.selection) return;
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if (isCursorAtStartOfNonEmptyHeading(editor)) {
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return;
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}
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if (
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isCursorAtStartOfBlockType(editor, 'quote') &&
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areCurrentAndPreviousBlocksOfType(editor, 'quote')
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) {
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Transforms.mergeNodes(editor, lowestMatchedAncestor(editor, 'quote'));
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return true;
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}
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return unwrapIfCursorAtStart(editor, true);
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}
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export default keyDownBackspace;
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