H-3879: Add protocol dropdown to early access form URL input

apps/hash-frontend/src/pages/index.page/waitlisted/early-access-modal.tsx

@@ -9,6 +9,7 @@ import { Button } from "../../../shared/ui/button";
 import { MenuItem } from "../../../shared/ui/menu-item";
 import { Modal } from "../../../shared/ui/modal";
 import { useAuthenticatedUser } from "../../shared/auth-info-context";
+import { UrlInput } from "../../shared/url-input";
 
 type FormFieldMetadata = {
   label: string;
@@ -93,7 +94,14 @@ const Input = ({
         *
       </Box>
       <Box>
-        {options ? (
+        {url ? (
+          <UrlInput
+            autoFocus
+            onChange={onChange}
+            placeholder={placeholder}
+            value={value}
+          />
+        ) : options ? (
           <Select
             value={value}
             onChange={(event) => onChange(event.target.value)}
@@ -107,12 +115,6 @@ const Input = ({
           </Select>
         ) : (
           <TextField
-            autoFocus={url}
-            inputProps={
-              url
-                ? { pattern: "\\S+\\.\\w+", title: "Please enter a valid URL" }
-                : undefined
-            }
             multiline={multiline}
             onChange={(event) => onChange(event.target.value)}
             placeholder={placeholder}

apps/hash-frontend/src/pages/shared/url-input.tsx

@@ -0,0 +1,89 @@
+import { Select, TextField } from "@hashintel/design-system";
+import { outlinedInputClasses, Stack } from "@mui/material";
+
+import { MenuItem } from "../../shared/ui/menu-item";
+
+const protocols = ["https", "http"] as const;
+
+type Protocol = (typeof protocols)[number];
+
+const partsFromUrl = (url: string): { protocol: Protocol; rest: string } => {
+  if (!url) {
+    return { protocol: "https", rest: "" };
+  }
+
+  const [protocol, rest] = url.split("://");
+
+  if (!protocol) {
+    return { protocol: "https", rest: "" };
+  }
+
+  return { protocol: protocol as Protocol, rest: rest ?? "" };
+};
+
+export const UrlInput = ({
+  autoFocus,
+  onChange,
+  placeholder,
+  value,
+}: {
+  autoFocus: boolean;
+  onChange: (value: string) => void;
+  placeholder: string;
+  value: string;
+}) => {
+  const { protocol, rest } = partsFromUrl(value);
+
+  return (
+    <Stack direction="row">
+      <Select
+        value={protocol}
+        onChange={(event) => {
+          const newProtocol = event.target.value as Protocol;
+          onChange(`${newProtocol}://${rest}`);
+        }}
+        sx={{
+          [`& .${outlinedInputClasses.root}`]: {
+            borderTopRightRadius: 0,
+            borderBottomRightRadius: 0,
+          },
+          [`.${outlinedInputClasses.notchedOutline}`]: {
+            borderRight: "none",
+          },
+          width: 110,
+          "& svg": { color: ({ palette }) => palette.gray[30] },
+        }}
+      >
+        {protocols.map((option) => (
+          <MenuItem key={option} value={option}>
+            {option}://
+          </MenuItem>
+        ))}
+      </Select>
+      <TextField
+        autoFocus={autoFocus}
+        inputProps={{
+          pattern: "\\S+\\.\\w+(\\/\\S*)?",
+          title: "Please enter a valid domain",
+        }}
+        onChange={(event) => {
+          const newRest = event.target.value;
+          onChange(`${protocol}://${newRest}`);
+        }}
+        placeholder={placeholder}
+        sx={{
+          width: "100%",
+          [`.${outlinedInputClasses.notchedOutline}`]: {
+            borderLeftColor: "transparent",
+          },
+          [`& .${outlinedInputClasses.root}`]: {
+            borderTopLeftRadius: 0,
+            borderBottomLeftRadius: 0,
+          },
+        }}
+        type="text"
+        value={rest}
+      />
+    </Stack>
+  );
+};

libs/@hashintel/design-system/src/theme/components/inputs/mui-select-theme-options.tsx

@@ -70,7 +70,7 @@ export const MuiSelectThemeOptions: Components<Theme>["MuiSelect"] = {
         },
 
       [`&:focus ~ .${outlinedInputClasses.notchedOutline}`]: {
-        border: `1px solid ${theme.palette.blue[60]}`,
+        border: `2px solid ${theme.palette.blue[60]}`,
       },
     }),
     icon: ({ theme }) => ({

libs/@hashintel/design-system/src/theme/components/navigation/mui-menu-item-theme-options.ts

@@ -85,8 +85,7 @@ export const MuiMenuItemThemeOptions: Components<Theme>["MuiMenuItem"] = {
       },
 
       [`&.${menuItemClasses.focusVisible}, &:focus`]: {
-        boxShadow: `0px 0px 0px 2px ${theme.palette.white}, 0px 0px 0px 4px ${theme.palette.blue[70]}`,
-        backgroundColor: "transparent",
+        backgroundColor: theme.palette.blue[20],
       },
 
       [`&.${menuItemClasses.selected}, &.${menuItemClasses.selected}:hover, &:active`]: