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

1 files changed, 3 insertions, 2 deletions

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 });
                         }