Working implementation of remote cursors

2 files changed, 13 insertions, 8 deletions

diff --git a/src/client/util/DragManager.ts b/src/client/util/DragManager.ts
index 8f27f5b21..7fd86ebcd 100644
--- a/src/client/util/DragManager.ts
+++ b/src/client/util/DragManager.ts
@@ -3,7 +3,7 @@ import { emptyFunction } from "../../Utils";
 import { CollectionDockingView } from "../views/collections/CollectionDockingView";
 import * as globalCssVariables from "../views/globalCssVariables.scss";
 import { MainOverlayTextBox } from "../views/MainOverlayTextBox";
-import { Doc } from "../../new_fields/Doc";
+import { Doc, DocListCast } from "../../new_fields/Doc";
 import { Cast } from "../../new_fields/Types";
 import { listSpec } from "../../new_fields/Schema";
 
@@ -42,12 +42,14 @@ export function SetupDrag(_reference: React.RefObject<HTMLDivElement>, docFunc:
 
 export async function DragLinksAsDocuments(dragEle: HTMLElement, x: number, y: number, sourceDoc: Doc) {
     let srcTarg = sourceDoc.proto;
-    let draggedDocs = srcTarg ?
-        Cast(srcTarg.linkedToDocs, listSpec(Doc), []).map(linkDoc =>
-            Cast(linkDoc.linkedTo, Doc) as Doc) : [];
-    let draggedFromDocs = srcTarg ?
-        Cast(srcTarg.linkedFromDocs, listSpec(Doc), []).map(linkDoc =>
-            Cast(linkDoc.linkedFrom, Doc) as Doc) : [];
+    let draggedDocs: Doc[] = [];
+    let draggedFromDocs: Doc[] = []
+    if (srcTarg) {
+        let linkToDocs = await DocListCast(srcTarg.linkedToDocs);
+        let linkFromDocs = await DocListCast(srcTarg.linkedFromDocs);
+        if (linkToDocs) draggedDocs = linkToDocs.map(linkDoc => Cast(linkDoc.linkedTo, Doc) as Doc);
+        if (linkFromDocs) draggedFromDocs = linkFromDocs.map(linkDoc => Cast(linkDoc.linkedFrom, Doc) as Doc);
+    }
     draggedDocs.push(...draggedFromDocs);
     if (draggedDocs.length) {
         let moddrag: Doc[] = [];
diff --git a/src/client/util/UndoManager.ts b/src/client/util/UndoManager.ts
index 0b5280c4a..c0ed015bd 100644
--- a/src/client/util/UndoManager.ts
+++ b/src/client/util/UndoManager.ts
@@ -1,7 +1,6 @@
 import { observable, action, runInAction } from "mobx";
 import 'source-map-support/register';
 import { Without } from "../../Utils";
-import { string } from "prop-types";
 
 function getBatchName(target: any, key: string | symbol): string {
     let keyName = key.toString();
@@ -94,6 +93,10 @@ export namespace UndoManager {
         return redoStack.length > 0;
     }
 
+    export function PrintBatches(): void {
+        GetOpenBatches().forEach(batch => console.log(batch.batchName));
+    }
+
     let openBatches: Batch[] = [];
     export function GetOpenBatches(): Without<Batch, 'end'>[] {
         return openBatches;