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Fix code viewer editor when line numbers are enabled - #638
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mckaragoz merged 1 commit intoAug 16, 2026
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When `ShowLineNumbers` and `Editable` are both set to `true` on the `MudCodViewer`, there is a shift between the caret and the shown highlighted content. This is due to the fact that the `<pre>` overlay is shifted right by `3.8em` and the underlying `<textarea>` is not. So there is effectively a shift of 3.8em between the caret and the shown highlighted content. I encountered the issue in my project and it has also been reported in issue CodeBeamOrg#628. The fix adds a new style for the `<textarea>` and applies it dynamically when `ShowLineNumbers` is `true` (as it was already done for the `<pre>`) The 4th doc sample example has also been updated to allow enabling line numbers when in edit mode.
DamienBraillardforce-pushed
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3b2a5f0CompareCodecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@## dev #638 +/- ##
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- Coverage 65.34% 65.32% -0.02%
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Files 111 111 Lines 8354 8361 +7 Branches 1474 1474 ==========================================
+ Hits 5459 5462 +3 - Misses 2389 2393 +4
Partials 506 506 ☔ View full report in Codecov by Harness. 🚀 New features to boost your workflow:
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mckaragoz
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Aug 16, 2026
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When
ShowLineNumbersandEditableare both set totrueon theMudCodViewer, there is a shift between the caret and the shown highlighted content.This is due to the fact that the
<pre>overlay is shifted right by3.8emand the underlying<textarea>is not. So there is effectively a shift of 3.8em between the caret and the shown highlighted content.I encountered the issue in my project and it has also been reported in issue #628.
The fix adds a new style for the
<textarea>and applies it dynamically whenShowLineNumbersistrue(as it was already done for the<pre>)The 4th doc sample example has also been updated to allow enabling line numbers when in edit mode.