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only auto scroll if at bottom of logs #2342

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only auto scroll if at bottom of logs #2342

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20 changes: 17 additions & 3 deletions web/src/components/wizard/installation/shared/LogViewer.tsx
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import React, { useRef, useEffect } from 'react';
import React, { useRef, useEffect, useState } from 'react';
import { ChevronDown, ChevronUp } from 'lucide-react';

interface LogViewerProps {
Expand All @@ -15,12 +15,24 @@ const LogViewer: React.FC<LogViewerProps> = ({
onToggle
}) => {
const logsEndRef = useRef<HTMLDivElement>(null);
const logContainerRef = useRef<HTMLDivElement>(null);
const [isAtBottom, setIsAtBottom] = useState(true);

// Check if user is at bottom of logs
const handleScroll = () => {
if (!logContainerRef.current) return;

const { scrollTop, scrollHeight, clientHeight } = logContainerRef.current;
const isBottom = Math.abs(scrollHeight - clientHeight - scrollTop) < 10;
setIsAtBottom(isBottom);
};

// Only auto-scroll if user is at bottom
useEffect(() => {
if (logsEndRef.current && isExpanded) {
if (logsEndRef.current && isExpanded && isAtBottom) {
logsEndRef.current.scrollIntoView({ behavior: 'smooth' });
}
}, [logs, isExpanded]);
}, [logs, isExpanded, isAtBottom]);

return (
<div className="mt-6" data-testid="log-viewer">
Expand All @@ -38,6 +50,8 @@ const LogViewer: React.FC<LogViewerProps> = ({
</button>
{isExpanded && (
<div
ref={logContainerRef}
onScroll={handleScroll}
className="bg-gray-900 text-gray-200 rounded-md p-4 h-48 overflow-y-auto font-mono text-xs mt-2"
data-testid="log-viewer-content"
>
Expand Down
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