From d0a57305efcf03f4fd69ca180d97ea85e6cb2f1d Mon Sep 17 00:00:00 2001
From: Brendan Allan <brendonovich@outlook.com>
Date: Fri, 20 Mar 2026 23:02:07 +0800
Subject: app: file type filter on desktop + multiple files (#18403)

---
 packages/desktop-electron/src/main/ipc.ts        | 11 ++++++++++-
 packages/desktop-electron/src/preload/types.ts   |  2 ++
 packages/desktop-electron/src/renderer/index.tsx |  4 ++++
 3 files changed, 16 insertions(+), 1 deletion(-)

(limited to 'packages/desktop-electron/src')

diff --git a/packages/desktop-electron/src/main/ipc.ts b/packages/desktop-electron/src/main/ipc.ts
index 71b3c3395..543f857a5 100644
--- a/packages/desktop-electron/src/main/ipc.ts
+++ b/packages/desktop-electron/src/main/ipc.ts
@@ -6,6 +6,11 @@ import type { InitStep, ServerReadyData, SqliteMigrationProgress, TitlebarTheme,
 import { getStore } from "./store"
 import { setTitlebar } from "./windows"
 
+const pickerFilters = (ext?: string[]) => {
+  if (!ext || ext.length === 0) return undefined
+  return [{ name: "Files", extensions: ext }]
+}
+
 type Deps = {
   killSidecar: () => void
   installCli: () => Promise<string>
@@ -94,11 +99,15 @@ export function registerIpcHandlers(deps: Deps) {
 
   ipcMain.handle(
     "open-file-picker",
-    async (_event: IpcMainInvokeEvent, opts?: { multiple?: boolean; title?: string; defaultPath?: string }) => {
+    async (
+      _event: IpcMainInvokeEvent,
+      opts?: { multiple?: boolean; title?: string; defaultPath?: string; accept?: string[]; extensions?: string[] },
+    ) => {
       const result = await dialog.showOpenDialog({
         properties: ["openFile", ...(opts?.multiple ? ["multiSelections" as const] : [])],
         title: opts?.title ?? "Choose a file",
         defaultPath: opts?.defaultPath,
+        filters: pickerFilters(opts?.extensions),
       })
       if (result.canceled) return null
       return opts?.multiple ? result.filePaths : result.filePaths[0]
diff --git a/packages/desktop-electron/src/preload/types.ts b/packages/desktop-electron/src/preload/types.ts
index 100508fcd..f8e6d52c7 100644
--- a/packages/desktop-electron/src/preload/types.ts
+++ b/packages/desktop-electron/src/preload/types.ts
@@ -50,6 +50,8 @@ export type ElectronAPI = {
     multiple?: boolean
     title?: string
     defaultPath?: string
+    accept?: string[]
+    extensions?: string[]
   }) => Promise<string | string[] | null>
   saveFilePicker: (opts?: { title?: string; defaultPath?: string }) => Promise<string | null>
   openLink: (url: string) => void
diff --git a/packages/desktop-electron/src/renderer/index.tsx b/packages/desktop-electron/src/renderer/index.tsx
index 30e882e23..ec2b4d1e7 100644
--- a/packages/desktop-electron/src/renderer/index.tsx
+++ b/packages/desktop-electron/src/renderer/index.tsx
@@ -1,6 +1,8 @@
 // @refresh reload
 
 import {
+  ACCEPTED_FILE_EXTENSIONS,
+  ACCEPTED_FILE_TYPES,
   AppBaseProviders,
   AppInterface,
   handleNotificationClick,
@@ -111,6 +113,8 @@ const createPlatform = (): Platform => {
       const result = await window.api.openFilePicker({
         multiple: opts?.multiple ?? false,
         title: opts?.title ?? t("desktop.dialog.chooseFile"),
+        accept: opts?.accept ?? ACCEPTED_FILE_TYPES,
+        extensions: opts?.extensions ?? ACCEPTED_FILE_EXTENSIONS,
       })
       return handleWslPicker(result)
     },
-- 
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