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feat(ui): replace LanguageSelect with shadcn DropdownMenu demo
Demonstrate shadcn/antd dual-stack coexistence: - Convert LanguageSelect from class to functional component - Replace antd Dropdown with shadcn DropdownMenu - Replace @ant-design/icons GlobalOutlined with lucide-react Globe - Add @radix-ui/react-dropdown-menu dependency - Import shadcn-vars.css in index.js to activate Tailwind CSS variables Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
1 parent 7d2ab6e commit b610d6f

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‎web/.gitignore‎

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yarn-debug.log*
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yarn-error.log*
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package-lock.json
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public/flag-icons/

‎web/package.json‎

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"@cyntler/react-doc-viewer": "^1.5.2",
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"@dnd-kit/core": "^6.3.1",
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"@dnd-kit/utilities": "^3.2.2",
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"@radix-ui/react-dropdown-menu": "^2.1.6",
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"@uiw/codemirror-extensions-langs": "^4.23.8",
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"@uiw/codemirror-theme-material": "^4.23.8",
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"@uiw/react-codemirror": "^4.23.8",
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"identicon.js": "^2.3.3",
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"js-base64": "^3.7.7",
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"katex": "^0.16.9",
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"lucide-react": "^0.468.0",
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"marked": "^12.0.1",
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"md5": "^2.3.0",
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"moment": "^2.29.1",

‎web/src/LanguageSelect.js‎

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// See the License for the specific language governing permissions and
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// limitations under the License.
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import React from "react";
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import {Dropdown} from "antd";
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import React, {useEffect, useState} from "react";
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import {GlobalOutlined} from "@ant-design/icons";
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import {Check} from "lucide-react";
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import * as Setting from "./Setting";
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import * as Conf from "./Conf";
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import "./shadcn-vars.css";
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import {
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DropdownMenu,
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DropdownMenuContent,
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DropdownMenuItem,
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DropdownMenuTrigger
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} from "./components/ui/dropdown-menu";
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function flagIcon(country, alt) {
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return (
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<img className="language-icon" width={24} alt={alt} src={`${Conf.StaticBaseUrl}/flag-icons/${country}.svg`} />
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);
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}
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const countryMap = Object.fromEntries(Setting.Countries.map(c => [c.key, c]));
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class LanguageSelect extends React.Component {
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constructor(props) {
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super(props);
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this.state = {
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languages: props.languages ?? Setting.Countries.map(item => item.key),
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};
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const flagIcon = (country, alt) => (
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<img className="language-icon" width={24} alt={alt} src={`${Conf.StaticBaseUrl}/flag-icons/${country}.svg`} />
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);
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Setting.Countries.forEach((country) => {
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new Image().src = `${Conf.StaticBaseUrl}/flag-icons/${country.country}.svg`;
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});
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}
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export default function LanguageSelect({languages, style}) {
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const [open, setOpen] = useState(false);
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const [lang, setLang] = useState(() => Setting.getLanguage());
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const availableLanguages = languages ?? Setting.Countries.map(item => item.key);
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items = Setting.Countries.map((country) => Setting.getItem(country.label, country.key, flagIcon(country.country, country.alt)));
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useEffect(() => {
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availableLanguages.forEach(key => {
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const c = countryMap[key];
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if (c) {
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new Image().src = `${Conf.StaticBaseUrl}/flag-icons/${c.country}.svg`;
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}
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});
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}, []);
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getOrganizationLanguages(languages) {
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const select = [];
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for (const language of languages) {
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this.items.map((item, index) => item.key === language ? select.push(item) : null);
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}
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return select;
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if (availableLanguages.length === 0) {
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return null;
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}
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render() {
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const languageItems = this.getOrganizationLanguages(this.state.languages);
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const onClick = (e) => {
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Setting.setLanguage(e.key);
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};
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return (
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<Dropdown menu={{items: languageItems, onClick}} >
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<div className="select-box" style={{display: languageItems.length === 0 ? "none" : null, ...this.props.style}} >
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return (
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<DropdownMenu open={open} onOpenChange={setOpen}>
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<DropdownMenuTrigger asChild>
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<span
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className="select-box cursor-pointer inline-flex items-center"
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style={style}
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onMouseEnter={() => setOpen(true)}
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>
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<GlobalOutlined style={{fontSize: "24px"}} />
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</div>
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</Dropdown>
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);
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}
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</span>
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</DropdownMenuTrigger>
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<DropdownMenuContent
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align="start"
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sideOffset={2}
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className="w-36 z-[100] rounded-xl border border-[rgb(230,225,224)]"
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onMouseLeave={() => setOpen(false)}
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>
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{availableLanguages.map(key => {
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const c = countryMap[key];
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if (!c) {return null;}
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const isSelected = lang === key;
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return (
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<DropdownMenuItem
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key={key}
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onClick={() => {Setting.setLanguage(key); setLang(key); setOpen(false);}}
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className={isSelected ? "text-red-500 data-[highlighted]:bg-accent data-[highlighted]:text-red-500" : "data-[highlighted]:bg-accent"}
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>
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<span className="mr-2">{flagIcon(c.country, c.alt)}</span>
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{c.label}
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{isSelected && <Check className="ml-auto h-4 w-4" />}
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</DropdownMenuItem>
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);
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})}
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</DropdownMenuContent>
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</DropdownMenu>
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);
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}
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export default LanguageSelect;

‎web/src/components/ui/dropdown-menu.jsx‎

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import React from "react";
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import * as DropdownMenuPrimitive from "@radix-ui/react-dropdown-menu";
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import {Check, ChevronRight} from "lucide-react";
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import {cn} from "../../lib/utils";
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const DropdownMenu = DropdownMenuPrimitive.Root;
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const DropdownMenuTrigger = DropdownMenuPrimitive.Trigger;
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const DropdownMenuGroup = DropdownMenuPrimitive.Group;
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const DropdownMenuPortal = DropdownMenuPrimitive.Portal;
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const DropdownMenuSub = DropdownMenuPrimitive.Sub;
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const DropdownMenuRadioGroup = DropdownMenuPrimitive.RadioGroup;
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const DropdownMenuSubTrigger = React.forwardRef(({className, inset, children, ...props}, ref) => (
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<DropdownMenuPrimitive.SubTrigger
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ref={ref}
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className={cn(
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"flex cursor-default select-none items-center rounded-sm px-2 py-1.5 text-sm outline-none focus:bg-accent data-[state=open]:bg-accent",
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inset && "pl-8",
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className
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)}
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{...props}
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>
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{children}
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<ChevronRight className="ml-auto h-4 w-4" />
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</DropdownMenuPrimitive.SubTrigger>
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));
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DropdownMenuSubTrigger.displayName = DropdownMenuPrimitive.SubTrigger.displayName;
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const DropdownMenuSubContent = React.forwardRef(({className, ...props}, ref) => (
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<DropdownMenuPrimitive.SubContent
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ref={ref}
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className={cn(
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"z-50 min-w-[8rem] overflow-hidden rounded-md border bg-popover p-1 text-popover-foreground shadow-lg data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
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className
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)}
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{...props}
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/>
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));
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DropdownMenuSubContent.displayName = DropdownMenuPrimitive.SubContent.displayName;
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const DropdownMenuContent = React.forwardRef(({className, sideOffset = 4, ...props}, ref) => (
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<DropdownMenuPrimitive.Portal>
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<DropdownMenuPrimitive.Content
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ref={ref}
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sideOffset={sideOffset}
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className={cn(
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"z-50 min-w-[8rem] overflow-hidden rounded-md border bg-popover p-1 text-popover-foreground shadow-md data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
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className
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)}
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{...props}
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/>
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</DropdownMenuPrimitive.Portal>
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));
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DropdownMenuContent.displayName = DropdownMenuPrimitive.Content.displayName;
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const DropdownMenuItem = React.forwardRef(({className, inset, ...props}, ref) => (
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<DropdownMenuPrimitive.Item
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ref={ref}
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className={cn(
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"relative flex cursor-default select-none items-center rounded-sm px-2 py-1.5 text-sm outline-none transition-colors focus:bg-accent focus:text-accent-foreground data-[highlighted]:bg-accent data-[highlighted]:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50",
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inset && "pl-8",
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className
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)}
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{...props}
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/>
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));
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DropdownMenuItem.displayName = DropdownMenuPrimitive.Item.displayName;
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const DropdownMenuCheckboxItem = React.forwardRef(({className, children, checked, ...props}, ref) => (
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<DropdownMenuPrimitive.CheckboxItem
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ref={ref}
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className={cn(
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"relative flex cursor-default select-none items-center rounded-sm py-1.5 pl-8 pr-2 text-sm outline-none transition-colors focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50",
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className
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)}
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checked={checked}
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{...props}
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>
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<span className="absolute left-2 flex h-3.5 w-3.5 items-center justify-center">
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<DropdownMenuPrimitive.ItemIndicator>
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<Check className="h-4 w-4" />
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</DropdownMenuPrimitive.ItemIndicator>
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</span>
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{children}
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</DropdownMenuPrimitive.CheckboxItem>
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));
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DropdownMenuCheckboxItem.displayName = DropdownMenuPrimitive.CheckboxItem.displayName;
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const DropdownMenuRadioItem = React.forwardRef(({className, children, ...props}, ref) => (
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<DropdownMenuPrimitive.RadioItem
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ref={ref}
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className={cn(
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"relative flex cursor-default select-none items-center rounded-sm py-1.5 pl-8 pr-2 text-sm outline-none transition-colors focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50",
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className
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)}
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{...props}
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>
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<span className="absolute left-2 flex h-3.5 w-3.5 items-center justify-center">
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<DropdownMenuPrimitive.ItemIndicator>
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<Check className="h-4 w-4" />
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</DropdownMenuPrimitive.ItemIndicator>
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</span>
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{children}
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</DropdownMenuPrimitive.RadioItem>
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));
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DropdownMenuRadioItem.displayName = DropdownMenuPrimitive.RadioItem.displayName;
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const DropdownMenuLabel = React.forwardRef(({className, inset, ...props}, ref) => (
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<DropdownMenuPrimitive.Label
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ref={ref}
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className={cn("px-2 py-1.5 text-sm font-semibold", inset && "pl-8", className)}
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{...props}
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/>
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));
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DropdownMenuLabel.displayName = DropdownMenuPrimitive.Label.displayName;
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const DropdownMenuSeparator = React.forwardRef(({className, ...props}, ref) => (
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<DropdownMenuPrimitive.Separator ref={ref} className={cn("-mx-1 my-1 h-px bg-muted", className)} {...props} />
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));
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DropdownMenuSeparator.displayName = DropdownMenuPrimitive.Separator.displayName;
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const DropdownMenuShortcut = ({className, ...props}) => {
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return <span className={cn("ml-auto text-xs tracking-widest opacity-60", className)} {...props} />;
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};
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DropdownMenuShortcut.displayName = "DropdownMenuShortcut";
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export {
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DropdownMenu,
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DropdownMenuTrigger,
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DropdownMenuContent,
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DropdownMenuItem,
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DropdownMenuCheckboxItem,
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DropdownMenuRadioItem,
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DropdownMenuLabel,
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DropdownMenuSeparator,
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DropdownMenuShortcut,
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DropdownMenuGroup,
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DropdownMenuPortal,
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DropdownMenuSub,
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DropdownMenuSubContent,
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DropdownMenuSubTrigger,
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DropdownMenuRadioGroup
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};

‎web/src/shadcn-vars.css‎

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--chart-5: 340 75% 55%;
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}
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}
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@layer base {
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* {
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@apply border-border;
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}
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body {
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@apply bg-background text-foreground;
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}
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}

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