Commit adbeb78

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Added safeguards for edge cases

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Lines changed: 5 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -1146,6 +1146,8 @@ public class SingleSideTextDiffPresenter : ThemedTextDiffPresenter`
`1146`	`1146`
`1147`	`1147`	`public void ForceSyncScrollOffset()`
`1148`	`1148`	`{`
	`1149`	`+ if (_scrollViewer == null)`
	`1150`	`+ return;`
`1149`	`1151`	`if (DataContext is ViewModels.TwoSideTextDiff diff)`
`1150`	`1152`	`diff.SyncScrollOffset = _scrollViewer?.Offset ?? Vector.Zero;`
`1151`	`1153`	`}`
`@@ -1585,11 +1587,13 @@ static TextDiffView()`
`1585`	`1587`
`1586`	`1588`	`CurrentChangeBlockIdxProperty.Changed.AddClassHandler<TextDiffView>((v, e) =>`
`1587`	`1589`	`{`
`1588`		`- if (v.Editor.Presenter != null)`
	`1590`	`+ if ((int)e.NewValue>=0&&v.Editor.Presenter != null)`
`1589`	`1591`	`{`
`1590`	`1592`	`foreach (var p in v.Editor.Presenter.GetVisualDescendants().OfType<ThemedTextDiffPresenter>())`
`1591`	`1593`	`{`
`1592`	`1594`	`p.JumpToChangeBlock((int)e.NewValue);`
	`1595`	`+ if (p is SingleSideTextDiffPresenter ssp)`
	`1596`	`+ ssp.ForceSyncScrollOffset();`
`1593`	`1597`	`}`
`1594`	`1598`	`}`
`1595`	`1599`	`});`

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