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fix: suppress native mobile context menu on text selection #281

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fix: suppress native mobile context menu on text selection #281

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16 changes: 16 additions & 0 deletions packages/ui/components/Viewer.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -209,6 +209,21 @@ export const Viewer = forwardRef<ViewerHandle, ViewerProps>(({
onCodeBlockClick: handlePinpointCodeBlockClick,
});

// Suppress native context menu on touch devices (prevents cut/copy/paste overlay on mobile)
useEffect(() => {
const container = containerRef.current;
if (!container) return;
const isTouchPrimary = window.matchMedia('(pointer: coarse)').matches;
if (!isTouchPrimary) return;

const handleContextMenu = (e: Event) => {
e.preventDefault();
};

container.addEventListener('contextmenu', handleContextMenu);
return () => container.removeEventListener('contextmenu', handleContextMenu);
}, []);

// Detect when sticky action bar is "stuck" to show card background
useEffect(() => {
if (!stickyActions || !stickySentinelRef.current) return;
Expand Down Expand Up @@ -923,6 +938,7 @@ export const Viewer = forwardRef<ViewerHandle, ViewerProps>(({
className={`w-full bg-card rounded-xl shadow-xl p-5 md:p-8 lg:p-10 xl:p-12 relative ${
linkedDocInfo ? 'border-2 border-primary' : 'border border-border/50'
} ${inputMethod === 'pinpoint' ? 'cursor-crosshair' : ''}`}
style={{ WebkitTouchCallout: 'none' } as React.CSSProperties}
>
{/* Repo info + plan diff badge + demo badge + linked doc badge - top left */}
{(repoInfo || hasPreviousVersion || showDemoBadge || linkedDocInfo) && (
Expand Down
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