From b04bb12a5942d97eef369936e30b36db62b51f30 Mon Sep 17 00:00:00 2001
From: Stanley Yip <stanley_yip@brown.edu>
Date: Mon, 27 Jan 2020 19:08:05 -0500
Subject: pen updates

---
 src/client/views/nodes/DocumentView.tsx | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

(limited to 'src/client/views/nodes/DocumentView.tsx')

diff --git a/src/client/views/nodes/DocumentView.tsx b/src/client/views/nodes/DocumentView.tsx
index e0913b154..82ee1bd63 100644
--- a/src/client/views/nodes/DocumentView.tsx
+++ b/src/client/views/nodes/DocumentView.tsx
@@ -316,21 +316,23 @@ export class DocumentView extends DocComponent<DocumentViewProps, Document>(Docu
     handle1PointerDown = (e: React.TouchEvent, me: InteractionUtils.MultiTouchEvent<React.TouchEvent>) => {
         if (this.Document.onPointerDown) return;
         const touch = InteractionUtils.GetMyTargetTouches(me, this.prevPoints, true)[0];
-        this._downX = touch.clientX;
-        this._downY = touch.clientY;
-        if (!e.nativeEvent.cancelBubble) {
-            this._hitTemplateDrag = false;
-            for (let element = (e.target as any); element && !this._hitTemplateDrag; element = element.parentElement) {
-                if (element.className && element.className.toString() === "collectionViewBaseChrome-collapse") {
-                    this._hitTemplateDrag = true;
+        if (touch) {
+            this._downX = touch.clientX;
+            this._downY = touch.clientY;
+            if (!e.nativeEvent.cancelBubble) {
+                this._hitTemplateDrag = false;
+                for (let element = (e.target as any); element && !this._hitTemplateDrag; element = element.parentElement) {
+                    if (element.className && element.className.toString() === "collectionViewBaseChrome-collapse") {
+                        this._hitTemplateDrag = true;
+                    }
                 }
+                if ((this.active || this.Document.onDragStart || this.Document.onClick) && !e.ctrlKey && !this.Document.lockedPosition && !this.Document.inOverlay) e.stopPropagation();
+                this.removeMoveListeners();
+                this.addMoveListeners();
+                this.removeEndListeners();
+                this.addEndListeners();
+                e.stopPropagation();
             }
-            if ((this.active || this.Document.onDragStart || this.Document.onClick) && !e.ctrlKey && !this.Document.lockedPosition && !this.Document.inOverlay) e.stopPropagation();
-            this.removeMoveListeners();
-            this.addMoveListeners();
-            this.removeEndListeners();
-            this.addEndListeners();
-            e.stopPropagation();
         }
     }
 
-- 
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