@skokenes/slate-yjs
Version:
Yjs bindings for Slate.
43 lines • 4.01 kB
JavaScript
import invariant from 'tiny-invariant';
import { SyncNode } from '../../model';
import { getParent } from '../../path';
import cloneSyncElement from '../../utils/clone';
/**
* Applies a split node operation to a SharedType
*
* @param doc
* @param op
*/
export default function splitNode(doc, op) {
const [parent, index] = getParent(doc, op.path);
const children = SyncNode.getChildren(parent);
invariant(children, 'Parent of node should have children');
const target = children.get(index);
const inject = cloneSyncElement(target);
children.insert(index + 1, [inject]);
Object.entries(op.properties).forEach(([key, value]) => inject.set(key, value));
if (SyncNode.getText(target) !== undefined) {
const targetText = SyncNode.getText(target);
const injectText = SyncNode.getText(inject);
invariant(targetText);
invariant(injectText);
if (targetText.length > op.position) {
targetText.delete(op.position, targetText.length - op.position);
}
if (injectText !== undefined && op.position !== undefined) {
injectText.delete(0, op.position);
}
}
else {
const targetChildren = SyncNode.getChildren(target);
const injectChildren = SyncNode.getChildren(inject);
invariant(targetChildren);
invariant(injectChildren);
targetChildren.delete(op.position, targetChildren.length - op.position);
if (op.position !== undefined) {
injectChildren.delete(0, op.position);
}
}
return doc;
}
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