41 lines
1.1 KiB
TypeScript
41 lines
1.1 KiB
TypeScript
import { NodeType } from "prosemirror-model";
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import { EditorState } from "prosemirror-state";
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import { Dispatch } from "../types";
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/**
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* Converts the current node to a paragraph when pressing backspace at the
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* beginning of the node and not already a paragraph.
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*
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* @param type The node type
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* @returns A prosemirror command.
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*/
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export default function backspaceToParagraph(type: NodeType) {
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return (state: EditorState, dispatch: Dispatch) => {
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const { $from, from, to, empty } = state.selection;
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// if the selection has anything in it then use standard delete behavior
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if (!empty) {
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return null;
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}
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// check we're in a matching node
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if ($from.parent.type !== type) {
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return null;
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}
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// check if we're at the beginning of the heading
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const $pos = state.doc.resolve(from - 1);
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if ($pos.parent === $from.parent) {
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return null;
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}
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// okay, replace it with a paragraph
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dispatch(
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state.tr
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.setBlockType(from, to, type.schema.nodes.paragraph)
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.scrollIntoView()
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);
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return true;
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};
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}
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