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chore: fix rerenders on files #3805

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ae150b4
chore: fix rerenders on files
adithyaakrishna Mar 27, 2026
3750f6e
chore: fix review changes
adithyaakrishna Mar 27, 2026
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24 changes: 15 additions & 9 deletions apps/sim/app/workspace/[workspaceId]/files/components/file-viewer/file-viewer.tsx
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
'use client'

import { useCallback, useEffect, useRef, useState } from 'react'
import { memo, useCallback, useEffect, useRef, useState } from 'react'
import { createLogger } from '@sim/logger'
import { Skeleton } from '@/components/emcn'
import { cn } from '@/lib/core/utils/cn'
Expand Down Expand Up @@ -183,6 +183,8 @@ function TextEditor({
} = useWorkspaceFileContent(workspaceId, file.id, file.key, file.type === 'text/x-pptxgenjs')

const updateContent = useUpdateWorkspaceFileContent()
const updateContentRef = useRef(updateContent)
updateContentRef.current = updateContent

const [content, setContent] = useState('')
const [savedContent, setSavedContent] = useState('')
Expand Down Expand Up @@ -230,14 +232,14 @@ function TextEditor({
const currentContent = contentRef.current
if (currentContent === savedContentRef.current) return

await updateContent.mutateAsync({
await updateContentRef.current.mutateAsync({
workspaceId,
fileId: file.id,
content: currentContent,
})
setSavedContent(currentContent)
savedContentRef.current = currentContent
}, [workspaceId, file.id, updateContent])
}, [workspaceId, file.id])

const { saveStatus, saveImmediately, isDirty } = useAutosave({
content,
Expand Down Expand Up @@ -402,7 +404,7 @@ function TextEditor({
)
}

function IframePreview({ file }: { file: WorkspaceFileRecord }) {
const IframePreview = memo(function IframePreview({ file }: { file: WorkspaceFileRecord }) {
const serveUrl = `/api/files/serve/${encodeURIComponent(file.key)}?context=workspace`

return (
Expand All @@ -417,9 +419,9 @@ function IframePreview({ file }: { file: WorkspaceFileRecord }) {
/>
</div>
)
}
})

function ImagePreview({ file }: { file: WorkspaceFileRecord }) {
const ImagePreview = memo(function ImagePreview({ file }: { file: WorkspaceFileRecord }) {
const serveUrl = `/api/files/serve/${encodeURIComponent(file.key)}?context=workspace`

return (
Expand All @@ -432,7 +434,7 @@ function ImagePreview({ file }: { file: WorkspaceFileRecord }) {
/>
</div>
)
}
})

const pptxSlideCache = new Map<string, string[]>()

Expand Down Expand Up @@ -701,7 +703,11 @@ function PptxPreview({
)
}

function UnsupportedPreview({ file }: { file: WorkspaceFileRecord }) {
const UnsupportedPreview = memo(function UnsupportedPreview({
file,
}: {
file: WorkspaceFileRecord
}) {
const ext = getFileExtension(file.name)

return (
Expand All @@ -714,4 +720,4 @@ function UnsupportedPreview({ file }: { file: WorkspaceFileRecord }) {
</p>
</div>
)
}
})
21 changes: 13 additions & 8 deletions apps/sim/app/workspace/[workspaceId]/files/components/file-viewer/preview-panel.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,12 @@ interface PreviewPanelProps {
isStreaming?: boolean
}

export function PreviewPanel({ content, mimeType, filename, isStreaming }: PreviewPanelProps) {
export const PreviewPanel = memo(function PreviewPanel({
content,
mimeType,
filename,
isStreaming,
}: PreviewPanelProps) {
const previewType = resolvePreviewType(mimeType, filename)

if (previewType === 'markdown')
Expand All @@ -52,7 +57,7 @@ export function PreviewPanel({ content, mimeType, filename, isStreaming }: Previ
if (previewType === 'svg') return <SvgPreview content={content} />

return null
}
})

const REMARK_PLUGINS = [remarkGfm, remarkBreaks]

Expand Down Expand Up @@ -197,7 +202,7 @@ const MarkdownPreview = memo(function MarkdownPreview({
)
})

function HtmlPreview({ content }: { content: string }) {
const HtmlPreview = memo(function HtmlPreview({ content }: { content: string }) {
return (
<div className='h-full overflow-hidden'>
<iframe
Expand All @@ -208,9 +213,9 @@ function HtmlPreview({ content }: { content: string }) {
/>
</div>
)
}
})

function SvgPreview({ content }: { content: string }) {
const SvgPreview = memo(function SvgPreview({ content }: { content: string }) {
const wrappedContent = useMemo(
() =>
`<!DOCTYPE html><html><head><style>body{margin:0;display:flex;align-items:center;justify-content:center;min-height:100vh;background:transparent;}svg{max-width:100%;max-height:100vh;}</style></head><body>${content}</body></html>`,
Expand All @@ -227,9 +232,9 @@ function SvgPreview({ content }: { content: string }) {
/>
</div>
)
}
})

function CsvPreview({ content }: { content: string }) {
const CsvPreview = memo(function CsvPreview({ content }: { content: string }) {
const { headers, rows } = useMemo(() => parseCsv(content), [content])

if (headers.length === 0) {
Expand Down Expand Up @@ -271,7 +276,7 @@ function CsvPreview({ content }: { content: string }) {
</div>
</div>
)
}
})

function parseCsv(text: string): { headers: string[]; rows: string[][] } {
const lines = text.split('\n').filter((line) => line.trim().length > 0)
Expand Down
5 changes: 3 additions & 2 deletions ...kspace/[workspaceId]/files/components/files-list-context-menu/files-list-context-menu.tsx
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
'use client'

import { memo } from 'react'
import {
DropdownMenu,
DropdownMenuContent,
Expand All @@ -18,7 +19,7 @@ interface FilesListContextMenuProps {
disableUpload?: boolean
}

export function FilesListContextMenu({
export const FilesListContextMenu = memo(function FilesListContextMenu({
isOpen,
position,
onClose,
Expand Down Expand Up @@ -64,4 +65,4 @@ export function FilesListContextMenu({
</DropdownMenuContent>
</DropdownMenu>
)
}
})
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