@skokenes/slate-yjs
Version:
Yjs bindings for Slate.
36 lines • 3.11 kB
JavaScript
import invariant from 'tiny-invariant';
import { absolutePositionToRelativePosition } from '../cursor/utils';
import { YjsEditor } from './yjsEditor';
const AWARENESS = new WeakMap();
export const CursorEditor = {
awareness(editor) {
const awareness = AWARENESS.get(editor);
invariant(awareness, 'CursorEditor without attaches awareness');
return awareness;
},
updateCursor: (editor) => {
const sharedType = YjsEditor.sharedType(editor);
const { selection } = editor;
const anchor = selection &&
absolutePositionToRelativePosition(sharedType, selection.anchor);
const focus = selection &&
absolutePositionToRelativePosition(sharedType, selection.focus);
const awareness = CursorEditor.awareness(editor);
awareness.setLocalStateField('anchor', anchor);
awareness.setLocalStateField('focus', focus);
},
};
export function withCursor(editor, awareness) {
const e = editor;
AWARENESS.set(e, awareness);
e.awareness = awareness;
const { onChange } = editor;
e.onChange = () => {
setTimeout(() => CursorEditor.updateCursor(e), 0);
if (onChange) {
onChange();
}
};
return e;
}
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