From 36e62deaa887cea4bd475e222c37c941af70534c Mon Sep 17 00:00:00 2001
From: Michal Klobukowski <michal.klobukowski@contractors.roche.com>
Date: Thu, 29 Nov 2018 14:25:22 +0100
Subject: [PATCH] Extract FileInput's getValidation function

Feature #14524

Arvados-DCO-1.1-Signed-off-by: Michal Klobukowski <michal.klobukowski@contractors.roche.com>
---
 src/views/run-process-panel/inputs/file-input.tsx | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/src/views/run-process-panel/inputs/file-input.tsx b/src/views/run-process-panel/inputs/file-input.tsx
index e5fa9663..c135042d 100644
--- a/src/views/run-process-panel/inputs/file-input.tsx
+++ b/src/views/run-process-panel/inputs/file-input.tsx
@@ -3,6 +3,7 @@
 // SPDX-License-Identifier: AGPL-3.0
 
 import * as React from 'react';
+import { memoize } from 'lodash/fp';
 import {
     isRequiredInput,
     FileCommandInputParameter,
@@ -30,11 +31,7 @@ export const FileInput = ({ input }: FileInputProps) =>
         component={FileInputComponent}
         format={format}
         parse={parse}
-        validate={[
-            isRequiredInput(input)
-                ? (file?: File) => file ? undefined : ERROR_MESSAGE
-                : () => undefined,
-        ]} />;
+        validate={getValidation(input)} />;
 
 const format = (value?: File) => value ? value.basename : '';
 
@@ -44,6 +41,13 @@ const parse = (file: CollectionFile): File => ({
     basename: file.name,
 });
 
+const getValidation = memoize(
+    (input: FileCommandInputParameter) => ([
+        isRequiredInput(input)
+            ? (file?: File) => file ? undefined : ERROR_MESSAGE
+            : () => undefined,
+    ]));
+
 interface FileInputComponentState {
     open: boolean;
     file?: CollectionFile;
-- 
2.30.2