1 files changed, 31 insertions, 0 deletions
diff --git a/src/client/documents/DocFromField.ts b/src/client/documents/DocFromField.ts
new file mode 100644
index 000000000..b65bbbdf5
--- /dev/null
+++ b/src/client/documents/DocFromField.ts
@@ -0,0 +1,31 @@
+import { Doc, DocListCast } from '../../fields/Doc';
+import { InkField } from '../../fields/InkField';
+import { List } from '../../fields/List';
+import { StrCast } from '../../fields/Types';
+import { AudioField, ImageField, PdfField, VideoField } from '../../fields/URLField';
+import { Docs, DocumentOptions } from './Documents';
+
+/**
+ * Changes the field key in the doc's layout string to be the specified field
+ */
+export function ResetLayoutFieldKey(doc: Doc, fieldKey: string) {
+    doc.layout = StrCast(doc.layout).replace(/={'.*'}/, `={'${fieldKey}'}`);
+    return doc;
+}
+export function DocumentFromField(target: Doc, fieldKey: string, proto?: Doc, options?: DocumentOptions): Doc | undefined {
+    const field = target[fieldKey];
+    const resolved = options ?? {};
+    const nonDocFieldToDoc = () => {
+        if (field instanceof ImageField) return Docs.Create.ImageDocument(field.url.href, resolved);
+        if (field instanceof VideoField) return Docs.Create.VideoDocument(field.url.href, resolved);
+        if (field instanceof PdfField) return Docs.Create.PdfDocument(field.url.href, resolved);
+        if (field instanceof AudioField) return Docs.Create.AudioDocument(field.url.href, resolved);
+        if (field instanceof InkField) return Docs.Create.InkDocument(field.inkData, resolved);
+        if (field instanceof List && field[0] instanceof Doc) return Docs.Create.StackingDocument(DocListCast(field), resolved);
+        return Docs.Create.TextDocument('', { ...{ _width: 200, _height: 25, _layout_autoHeight: true }, ...resolved });
+    };
+    const created = field instanceof Doc ? field : ResetLayoutFieldKey(nonDocFieldToDoc(), fieldKey);
+    created.title = fieldKey;
+    proto && created.proto && (created.proto = Doc.GetProto(proto));
+    return created;
+}