From 282a6777ba9571ac56228677fc6b93f2ab2bbfb1 Mon Sep 17 00:00:00 2001
From: Yousef Moazzam <yousef.moazzam@diamond.ac.uk>
Date: Thu, 2 Jul 2026 14:29:07 +0100
Subject: [PATCH] Add minimal scan selector component

---
 frontend/unified/src/App.tsx                  |   7 +-
 .../unified/src/components/ScanSelector.tsx   | 209 ++++++++++++++++++
 2 files changed, 211 insertions(+), 5 deletions(-)
 create mode 100644 frontend/unified/src/components/ScanSelector.tsx

diff --git a/frontend/unified/src/App.tsx b/frontend/unified/src/App.tsx
index b5152e5..9122853 100644
--- a/frontend/unified/src/App.tsx
+++ b/frontend/unified/src/App.tsx
@@ -1,5 +1,6 @@
 import { Box, Divider, Grid2 as Grid, Stack, Typography } from "@mui/material";
 import { SessionSelector } from "./components/SessionSelector";
+import { ScanSelector } from "./components/ScanSelector";
 
 const VERTICAL_SPACING = 2;
 const HORIZONTAL_SPACING = 2;
@@ -13,11 +14,7 @@ export const App: React.FC = () => {
           <SessionSelector />
           <Divider sx={{ width: "100%" }} />
           <Typography variant="h5">Scan</Typography>
-          <PlaceholderComponent
-            placeholderText="Scan selector component placeholder"
-            height={100}
-            width={500}
-          />
+          <ScanSelector />
           <Divider sx={{ width: "100%" }} />
           <Typography variant="h5">App</Typography>
           <PlaceholderComponent
diff --git a/frontend/unified/src/components/ScanSelector.tsx b/frontend/unified/src/components/ScanSelector.tsx
new file mode 100644
index 0000000..5561bf8
--- /dev/null
+++ b/frontend/unified/src/components/ScanSelector.tsx
@@ -0,0 +1,209 @@
+import {
+  Chip,
+  TextField,
+  ToggleButton,
+  ToggleButtonGroup,
+  Stack,
+  InputAdornment,
+  IconButton,
+  Box,
+} from "@mui/material";
+import AddIcon from "@mui/icons-material/Add";
+import { useState } from "react";
+
+enum ScanSelectionMode {
+  Single = "Single",
+  Multiple = "Multiple",
+}
+
+enum MultiScanSelectionMode {
+  Manual = "Manual",
+  Range = "Range",
+}
+
+const SingleScanSelector: React.FC = () => {
+  const [textInputValue, setTextInputValue] = useState<string>("");
+  return (
+    <Stack>
+      <TextField
+        label="Scan number"
+        value={textInputValue}
+        type="number"
+        onChange={(e: React.ChangeEvent<HTMLInputElement>) => {
+          setTextInputValue(e.currentTarget.value);
+        }}
+      />
+    </Stack>
+  );
+};
+
+const MultiScanSelector: React.FC = () => {
+  const [mode, setMode] = useState<MultiScanSelectionMode>(
+    MultiScanSelectionMode.Range
+  );
+
+  return (
+    <>
+      <ToggleButtonGroup
+        exclusive
+        value={mode}
+        onChange={(_, toggleButtonLabel: string) => {
+          if (toggleButtonLabel === MultiScanSelectionMode.Manual) {
+            setMode(MultiScanSelectionMode.Manual);
+          } else if (toggleButtonLabel === MultiScanSelectionMode.Range) {
+            setMode(MultiScanSelectionMode.Range);
+          }
+        }}
+      >
+        <ToggleButton
+          sx={{ textTransform: "none" }}
+          value={MultiScanSelectionMode.Manual}
+        >
+          {MultiScanSelectionMode.Manual}
+        </ToggleButton>
+        <ToggleButton
+          sx={{ textTransform: "none" }}
+          value={MultiScanSelectionMode.Range}
+        >
+          {MultiScanSelectionMode.Range}
+        </ToggleButton>
+      </ToggleButtonGroup>
+      {mode === MultiScanSelectionMode.Manual ? (
+        <MultiScanManualSelector />
+      ) : (
+        <MultiScanRangeSelector />
+      )}
+    </>
+  );
+};
+
+const MultiScanRangeSelector: React.FC = () => {
+  const [start, setStart] = useState<string>("1");
+  const [stop, setStop] = useState<string>("2");
+  const [step, setStep] = useState<string>("1");
+
+  return (
+    <Stack direction="row" spacing={2}>
+      <TextField
+        label="Start"
+        type="number"
+        value={Number(start)}
+        onChange={(e: React.ChangeEvent<HTMLInputElement>) =>
+          setStart(e.target.value)
+        }
+      />
+      <TextField
+        label="Stop"
+        type="number"
+        value={Number(stop)}
+        onChange={(e: React.ChangeEvent<HTMLInputElement>) =>
+          setStop(e.target.value)
+        }
+      />
+      <TextField
+        label="Step"
+        type="number"
+        value={Number(step)}
+        onChange={(e: React.ChangeEvent<HTMLInputElement>) =>
+          setStep(e.target.value)
+        }
+      />
+    </Stack>
+  );
+};
+
+const MultiScanManualSelector: React.FC = () => {
+  const [textInputValue, setTextInputValue] = useState<string>("4");
+  const [scanIds, setScanIds] = useState<number[]>([1, 2, 3]);
+
+  const handleDeleteScanIdChip = (idToDelete: number) => {
+    setScanIds((ids: number[]) => ids.filter((id) => id !== idToDelete));
+  };
+
+  const handleClickAddScanIdButton = (idToAdd: number) => {
+    if (scanIds.includes(idToAdd)) {
+      return;
+    }
+    setScanIds([...scanIds, idToAdd]);
+    setTextInputValue(String(Number(textInputValue) + 1));
+  };
+
+  return (
+    <Stack spacing={2}>
+      <TextField
+        label="Scan number"
+        value={textInputValue}
+        type="number"
+        onChange={(e: React.ChangeEvent<HTMLInputElement>) => {
+          setTextInputValue(e.currentTarget.value);
+        }}
+        slotProps={{
+          input: {
+            endAdornment: (
+              <InputAdornment position="end">
+                <IconButton
+                  onClick={(_) =>
+                    handleClickAddScanIdButton(Number(textInputValue))
+                  }
+                >
+                  <AddIcon />
+                </IconButton>
+              </InputAdornment>
+            ),
+          },
+        }}
+      />
+      <Box maxWidth={300}>
+        {scanIds.map((scanId: number) => {
+          return (
+            <Chip
+              key={scanId}
+              label={scanId}
+              onDelete={(_) => handleDeleteScanIdChip(scanId)}
+            ></Chip>
+          );
+        })}
+      </Box>
+    </Stack>
+  );
+};
+
+export const ScanSelector: React.FC = () => {
+  const [scanSelectionMode, setScanSelectionMode] = useState<ScanSelectionMode>(
+    ScanSelectionMode.Single
+  );
+
+  return (
+    <Stack direction="column" spacing={2} alignItems={"start"}>
+      <ToggleButtonGroup
+        exclusive
+        value={scanSelectionMode}
+        onChange={(_, toggleButtonLabel: string) => {
+          if (toggleButtonLabel === ScanSelectionMode.Single) {
+            setScanSelectionMode(ScanSelectionMode.Single);
+          } else if (toggleButtonLabel === ScanSelectionMode.Multiple) {
+            setScanSelectionMode(ScanSelectionMode.Multiple);
+          }
+        }}
+      >
+        <ToggleButton
+          sx={{ textTransform: "none" }}
+          value={ScanSelectionMode.Single}
+        >
+          {ScanSelectionMode.Single}
+        </ToggleButton>
+        <ToggleButton
+          sx={{ textTransform: "none" }}
+          value={ScanSelectionMode.Multiple}
+        >
+          {ScanSelectionMode.Multiple}
+        </ToggleButton>
+      </ToggleButtonGroup>
+      {scanSelectionMode === ScanSelectionMode.Single ? (
+        <SingleScanSelector />
+      ) : (
+        <MultiScanSelector />
+      )}
+    </Stack>
+  );
+};