Prompt Input

Installation

Complete project setup with react/base, then install these components:

pnpm exec frontfriend download input-group attachment icon dropdown-menu -f react --primitive base

Enter sends and Shift+Enter adds a line. Input composition does not submit. Empty prompts are disabled unless a file is attached. The file input resets after selection so the same file can be selected again. Files remain local; this example does not upload them.

Usage

Complete example

import {
  InputGroup,
  InputGroupAddon,
  InputGroupTextarea,
  InputGroupButton,
} from "@/components/ui/input-group";
import {
  Attachment,
  AttachmentMedia,
  AttachmentContent,
  AttachmentTitle,
  AttachmentActions,
  AttachmentAction,
} from "@/components/ui/attachment";
import { Icon } from "@/components/ui/icon";
import {
  DropdownMenu,
  DropdownMenuTrigger,
  DropdownMenuContent,
  DropdownMenuRadioGroup,
  DropdownMenuSeparator,
  DropdownMenuGroup,
  DropdownMenuLabel,
  DropdownMenuRadioItem,
} from "@/components/ui/dropdown-menu";
import * as React from "react";
function AiModelMenus() {
  const [model, setModel] = React.useState("Balanced");
  const [effort, setEffort] = React.useState("Medium");
  return (
    <div style={{ display: "flex", flexWrap: "wrap", gap: 8 }}>
      <DropdownMenu>
        <DropdownMenuTrigger asChild>
          <InputGroupButton
            size="sm"
            variant="outline"
            aria-label={"Model: " + model}
          >
            {model}
            <Icon name="ChevronDown" />
          </InputGroupButton>
        </DropdownMenuTrigger>
        <DropdownMenuContent>
          <DropdownMenuRadioGroup value={model} onValueChange={setModel}>
            {[
              { name: "Provider A", models: ["Fast", "Balanced"] },
              { name: "Provider B", models: ["Precise"] },
            ].map((provider, index) => (
              <React.Fragment key={provider.name}>
                {index > 0 && <DropdownMenuSeparator />}
                <DropdownMenuGroup>
                  <DropdownMenuLabel>{provider.name}</DropdownMenuLabel>
                  {provider.models.map((value) => (
                    <DropdownMenuRadioItem
                      key={value}
                      value={value}
                      closeOnClick
                    >
                      {value}
                    </DropdownMenuRadioItem>
                  ))}
                </DropdownMenuGroup>
              </React.Fragment>
            ))}
          </DropdownMenuRadioGroup>
        </DropdownMenuContent>
      </DropdownMenu>
      <DropdownMenu>
        <DropdownMenuTrigger asChild>
          <InputGroupButton
            size="sm"
            variant="outline"
            aria-label={"Effort: " + effort}
          >
            {effort}
            <Icon name="ChevronDown" />
          </InputGroupButton>
        </DropdownMenuTrigger>
        <DropdownMenuContent>
          <DropdownMenuGroup>
            <DropdownMenuLabel>Reasoning effort</DropdownMenuLabel>
            <DropdownMenuRadioGroup value={effort} onValueChange={setEffort}>
              {["Low", "Medium", "High"].map((value) => (
                <DropdownMenuRadioItem key={value} value={value} closeOnClick>
                  {value}
                </DropdownMenuRadioItem>
              ))}
            </DropdownMenuRadioGroup>
          </DropdownMenuGroup>
        </DropdownMenuContent>
      </DropdownMenu>
    </div>
  );
}
export default function AiPromptInputExample() {
  const [text, setText] = React.useState("");
  const [files, setFiles] = React.useState<
    Array<{
      id: string;
      name: string;
      file: File;
    }>
  >([]);
  const [status, setStatus] = React.useState("");
  const formRef = React.useRef<HTMLFormElement>(null);
  const fileInput = React.useRef<HTMLInputElement>(null);
  function send(event: React.FormEvent<HTMLFormElement>) {
    event.preventDefault();
    if (!text.trim() && !files.length) return;
    setStatus(
      `Sent: ${text.trim() || "Files only"} (${files.length} ${files.length === 1 ? "file" : "files"}).`,
    );
    setText("");
    setFiles([]);
  }
  return (
    <div
      style={{
        width: "100%",
        maxWidth: 560,
        minWidth: 0,
        marginInline: "auto",
        display: "flex",
        flexDirection: "column",
        gap: 16,
        paddingBlock: 16,
        fontSize: "var(--text-sm)",
        lineHeight: 1.5,
      }}
    >
      <form ref={formRef} onSubmit={send}>
        <input
          ref={fileInput}
          type="file"
          multiple
          hidden
          aria-label="Attach files"
          onChange={(event) => {
            const added = Array.from(event.target.files ?? []).map((file) => ({
              id: crypto.randomUUID(),
              name: file.name,
              file,
            }));
            setFiles((previous) => [...previous, ...added]);
            event.target.value = "";
          }}
        />
        <InputGroup>
          {files.length > 0 && (
            <InputGroupAddon align="block-start">
              <div
                style={{
                  display: "flex",
                  gap: 8,
                  flexWrap: "wrap",
                  minWidth: 0,
                  width: "100%",
                }}
              >
                {files.map((file) => (
                  <Attachment key={file.id} size="sm">
                    <AttachmentMedia>
                      <Icon name="FileText" />
                    </AttachmentMedia>
                    <AttachmentContent>
                      <AttachmentTitle>{file.name}</AttachmentTitle>
                    </AttachmentContent>
                    <AttachmentActions>
                      <AttachmentAction
                        type="button"
                        aria-label={"Remove " + file.name}
                        onClick={() => {
                          setFiles((previous) =>
                            previous.filter((item) => item.id !== file.id),
                          );
                          formRef.current?.querySelector("textarea")?.focus();
                        }}
                      >
                        <Icon name="X" />
                      </AttachmentAction>
                    </AttachmentActions>
                  </Attachment>
                ))}
              </div>
            </InputGroupAddon>
          )}
          <InputGroupTextarea
            value={text}
            onChange={(event) => setText(event.target.value)}
            aria-label="Prompt"
            placeholder="Ask the agent to change your code"
            onKeyDown={(event) => {
              if (
                event.key === "Enter" &&
                !event.shiftKey &&
                !event.nativeEvent.isComposing
              ) {
                event.preventDefault();
                event.currentTarget.form?.requestSubmit();
              }
            }}
          />
          <InputGroupAddon align="block-end">
            <div
              style={{
                display: "flex",
                gap: 8,
                flexWrap: "wrap",
                width: "100%",
                alignItems: "center",
              }}
            >
              <InputGroupButton
                type="button"
                variant="outline"
                size="icon-sm"
                aria-label="Attach files"
                onClick={() => fileInput.current?.click()}
              >
                <Icon name="Plus" />
              </InputGroupButton>
              <div style={{ marginInlineStart: "auto" }}>
                <AiModelMenus />
              </div>
              <InputGroupButton
                type="submit"
                variant={text.trim() || files.length ? "default" : "secondary"}
                size="icon-sm"
                aria-label="Send"
                aria-disabled={!text.trim() && !files.length}
              >
                <Icon name="ArrowUp" />
              </InputGroupButton>
            </div>
          </InputGroupAddon>
        </InputGroup>
      </form>
      <p
        role="status"
        style={{
          position: "absolute",
          width: 1,
          height: 1,
          padding: 0,
          margin: -1,
          overflow: "hidden",
          clipPath: "inset(50%)",
          whiteSpace: "nowrap",
          border: 0,
        }}
      >
        {status}
      </p>
    </div>
  );
}

Components and API

This composition has no separate component API. Use the APIs for its installed components.