Revert "Merge remote-tracking branch 'origin/speedups2' into temporalmedia-mehek"

This reverts commit 1f7cf7babc76ecff5aef5fe663c48e067e85dd26, reversing
changes made to 1e3ad4de06f83eab54628de660529fefb9a0dc63.

1 files changed, 8 insertions, 4 deletions

diff --git a/src/client/views/collections/collectionMulticolumn/CollectionMultirowView.tsx b/src/client/views/collections/collectionMulticolumn/CollectionMultirowView.tsx
index 7e2b83230..a2d51e2e7 100644
--- a/src/client/views/collections/collectionMulticolumn/CollectionMultirowView.tsx
+++ b/src/client/views/collections/collectionMulticolumn/CollectionMultirowView.tsx
@@ -2,9 +2,11 @@ import { action, computed } from 'mobx';
 import { observer } from 'mobx-react';
 import * as React from "react";
 import { Doc } from '../../../../fields/Doc';
+import { documentSchema } from '../../../../fields/documentSchemas';
 import { List } from '../../../../fields/List';
+import { makeInterface } from '../../../../fields/Schema';
 import { BoolCast, NumCast, ScriptCast, StrCast } from '../../../../fields/Types';
-import { emptyFunction, returnFalse } from '../../../../Utils';
+import { returnFalse, emptyPath, returnEmptyDoclist, emptyFunction } from '../../../../Utils';
 import { DragManager, dropActionType } from '../../../util/DragManager';
 import { Transform } from '../../../util/Transform';
 import { undoBatch } from '../../../util/UndoManager';
@@ -14,6 +16,9 @@ import "./CollectionMultirowView.scss";
 import HeightLabel from './MultirowHeightLabel';
 import ResizeBar from './MultirowResizer';
 
+type MultirowDocument = makeInterface<[typeof documentSchema]>;
+const MultirowDocument = makeInterface(documentSchema);
+
 interface HeightSpecifier {
     magnitude: number;
     unit: string;
@@ -33,7 +38,7 @@ const resolvedUnits = Object.values(DimUnit);
 const resizerHeight = 8;
 
 @observer
-export class CollectionMultirowView extends CollectionSubView() {
+export class CollectionMultirowView extends CollectionSubView(MultirowDocument) {
 
     /**
      * @returns the list of layout documents whose width unit is
@@ -46,8 +51,7 @@ export class CollectionMultirowView extends CollectionSubView() {
 
     @computed
     private get minimumDim() {
-        const ratioDocs = this.ratioDefinedDocs.filter(layout => layout._dimMagnitude);
-        return ratioDocs.length ? Math.min(...ratioDocs.map(layout => NumCast(layout._dimMagnitude))) : 1;
+        return Math.min(...this.ratioDefinedDocs.filter(layout => layout._dimMagnitude).map(layout => NumCast(layout._dimMagnitude)));
     }
 
     /**