Shadcn.ui 弹出窗口元素，包括 Next.Js 14 中的命令：无法使用鼠标选择/单击元素

Question

我正在尝试评估 shadcn.ui 组件库的易用性。我正在尝试实现一个弹出组件，如下所示：

import { Button } from "@/components/ui/button";
import { Command, CommandEmpty, CommandGroup, CommandInput, CommandItem, CommandList, CommandSeparator } from "@/components/ui/command";
import {
  Popover,
  PopoverContent,
  PopoverTrigger,
} from "@/components/ui/popover";
import { CalendarIcon, EnvelopeClosedIcon, FaceIcon, GearIcon, PersonIcon, RocketIcon } from "@radix-ui/react-icons";

export function PopoverDemo() {
  return (
    <Popover>
      <PopoverTrigger asChild>
        <Button variant="outline">Open popover</Button>
      </PopoverTrigger>
      <PopoverContent className="w-80">
        <Command className="rounded-lg border shadow-md">
          <CommandInput placeholder="Type a command or search..." />
          <CommandList>
            <CommandEmpty>No results found.</CommandEmpty>
            <CommandGroup heading="Suggestions">
              <CommandItem>
                <CalendarIcon className="mr-2 h-4 w-4" />
                <span>Calendar</span>
              </CommandItem>
              <CommandItem>
                <FaceIcon className="mr-2 h-4 w-4" />
                <span>Search Emoji</span>
              </CommandItem>
              <CommandItem>
                <RocketIcon className="mr-2 h-4 w-4" />
                <span>Launch</span>
              </CommandItem>
            </CommandGroup>
            <CommandSeparator />
            <CommandGroup heading="Settings">
              <CommandItem>
                <PersonIcon className="mr-2 h-4 w-4" />
                <span>Profile</span>
              </CommandItem>
              <CommandItem>
                <EnvelopeClosedIcon className="mr-2 h-4 w-4" />
                <span>Mail</span>
              </CommandItem>
              <CommandItem>
                <GearIcon className="mr-2 h-4 w-4" />
                <span>Settings</span>                
              </CommandItem>
            </CommandGroup>
          </CommandList>
        </Command>
      </PopoverContent>
    </Popover>
  );
}

主页：

import { PopoverDemo } from "@/components/PopoverDemo";

export default function Home() {
  return (
    <div>
      <PopoverDemo></PopoverDemo>
    </div>
  );
}

我正在尝试模仿演示部分中“任务”示例的行为。这是 Command 组件和 Popover 组件之间的混合。

我能够打开弹出窗口。可以使用键盘选择一个命令元素，但我无法使用鼠标选择或单击任何组件。

我错过了什么吗？谢谢你的帮助

Answer 1

Command

组件没有自己的状态，因此我们需要在

useState

的帮助下提供状态。

您可以按照文档中的以下示例进行操作：

import * as React from "react"
import { CaretSortIcon, CheckIcon } from "@radix-ui/react-icons"

import { cn } from "@/lib/utils"
import { Button } from "@/components/ui/button"
import {
  Command,
  CommandEmpty,
  CommandGroup,
  CommandInput,
  CommandItem,
} from "@/components/ui/command"
import {
  Popover,
  PopoverContent,
  PopoverTrigger,
} from "@/components/ui/popover"

const frameworks = [
  {
    value: "next.js",
    label: "Next.js",
  },
  {
    value: "sveltekit",
    label: "SvelteKit",
  },
  {
    value: "nuxt.js",
    label: "Nuxt.js",
  },
  {
    value: "remix",
    label: "Remix",
  },
  {
    value: "astro",
    label: "Astro",
  },
]

export function ComboboxDemo() {
  const [open, setOpen] = React.useState(false)
  const [value, setValue] = React.useState("")

  return (
    <Popover open={open} onOpenChange={setOpen}>
      <PopoverTrigger asChild>
        <Button
          variant="outline"
          role="combobox"
          aria-expanded={open}
          className="w-[200px] justify-between"
        >
          {value
            ? frameworks.find((framework) => framework.value === value)?.label
            : "Select framework..."}
          <CaretSortIcon className="ml-2 h-4 w-4 shrink-0 opacity-50" />
        </Button>
      </PopoverTrigger>
      <PopoverContent className="w-[200px] p-0">
        <Command>
          <CommandInput placeholder="Search framework..." className="h-9" />
          <CommandEmpty>No framework found.</CommandEmpty>
          <CommandGroup>
            {frameworks.map((framework) => (
              <CommandItem
                key={framework.value}
                value={framework.value}
                onSelect={(currentValue) => {
                  setValue(currentValue === value ? "" : currentValue)
                  setOpen(false)
                }}
              >
                {framework.label}
                <CheckIcon
                  className={cn(
                    "ml-auto h-4 w-4",
                    value === framework.value ? "opacity-100" : "opacity-0"
                  )}
                />
              </CommandItem>
            ))}
          </CommandGroup>
        </Command>
      </PopoverContent>
    </Popover>
  )
}