From 403d1c4fece9efa663e0fd7161afff9f27cf670c Mon Sep 17 00:00:00 2001
From: bobzel <zzzman@gmail.com>
Date: Fri, 16 Dec 2022 15:07:50 -0500
Subject: fixed problem with undo.  regularized all linkfollowing anchor fields
 to start with followLink<xxx>.   added ease vs linear flag for scroll
 transitions in link and preselmeent navigations. added link follow to move
 target to specified offset from source.  shifted from setting dropAction on
 items to setting childDropAction on collections

---
 src/client/views/nodes/formattedText/FormattedTextBox.tsx | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

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

diff --git a/src/client/views/nodes/formattedText/FormattedTextBox.tsx b/src/client/views/nodes/formattedText/FormattedTextBox.tsx
index 9e91f6c46..b895043de 100644
--- a/src/client/views/nodes/formattedText/FormattedTextBox.tsx
+++ b/src/client/views/nodes/formattedText/FormattedTextBox.tsx
@@ -1120,7 +1120,7 @@ export class FormattedTextBox extends ViewBoxAnnotatableComponent<FieldViewProps
                     const durationSecStr = viewTrans.match(/([0-9.]*)s/);
                     const duration = durationMiliStr ? Number(durationMiliStr[1]) : durationSecStr ? Number(durationSecStr[1]) * 1000 : 0;
                     if (duration) {
-                        smoothScroll(duration, this._scrollRef.current, Math.abs(pos || 0));
+                        this._scrollStopper = smoothScroll(duration, this._scrollRef.current, Math.abs(pos || 0), 'ease', this._scrollStopper);
                     } else {
                         this._scrollRef.current.scrollTo({ top: pos });
                     }
@@ -1284,6 +1284,7 @@ export class FormattedTextBox extends ViewBoxAnnotatableComponent<FieldViewProps
         });
     }
     _didScroll = false;
+    _scrollStopper: undefined | (() => void);
     setupEditor(config: any, fieldKey: string) {
         const curText = Cast(this.dataDoc[this.fieldKey], RichTextField, null) || StrCast(this.dataDoc[this.fieldKey]);
         const rtfField = Cast((!curText && this.layoutDoc[this.fieldKey]) || this.dataDoc[fieldKey], RichTextField);
@@ -1302,7 +1303,7 @@ export class FormattedTextBox extends ViewBoxAnnotatableComponent<FieldViewProps
                         const shift = Math.min(topOff ?? Number.MAX_VALUE, botOff ?? Number.MAX_VALUE);
                         const scrollPos = scrollRef.scrollTop + shift * self.props.ScreenToLocalTransform().Scale;
                         if (this._focusSpeed !== undefined) {
-                            scrollPos && smoothScroll(this._focusSpeed, scrollRef, scrollPos);
+                            scrollPos && (this._scrollStopper = smoothScroll(this._focusSpeed, scrollRef, scrollPos, 'ease', this._scrollStopper));
                         } else {
                             scrollRef.scrollTo({ top: scrollPos });
                         }
-- 
cgit v1.2.3-70-g09d2

