src/shared/components/common/language-select.tsx

   1 import { selectableLanguages } from "@utils/app";
   2 import { randomStr } from "@utils/helpers";
   3 import classNames from "classnames";
   4 import { Component, linkEvent } from "inferno";
   5 import { Language } from "lemmy-js-client";
   6 import { I18NextService, UserService } from "../../services";
   7 import { Icon } from "./icon";
   8
   9 interface LanguageSelectProps {
  10   allLanguages: Language[];
  11   siteLanguages: number[];
  12   selectedLanguageIds?: number[];
  13   multiple?: boolean;
  14   onChange(val: number[]): any;
  15   showAll?: boolean;
  16   showSite?: boolean;
  17   iconVersion?: boolean;
  18   disabled?: boolean;
  19   showLanguageWarning?: boolean;
  20 }
  21
  22 export class LanguageSelect extends Component<LanguageSelectProps, any> {
  23   private id = `language-select-${randomStr()}`;
  24
  25   constructor(props: any, context: any) {
  26     super(props, context);
  27   }
  28
  29   componentDidMount() {
  30     this.setSelectedValues();
  31   }
  32
  33   // Necessary because there is no HTML way to set selected for multiple in value=
  34   setSelectedValues() {
  35     const ids = this.props.selectedLanguageIds?.map(toString);
  36     if (ids) {
  37       const select = (document.getElementById(this.id) as HTMLSelectElement)
  38         .options;
  39       for (let i = 0; i < select.length; i++) {
  40         const o = select[i];
  41         if (ids.includes(o.value)) {
  42           o.selected = true;
  43         }
  44       }
  45     }
  46   }
  47
  48   render() {
  49     return this.props.iconVersion ? (
  50       this.selectBtn
  51     ) : (
  52       <div className="language-select">
  53         {this.props.multiple && this.props.showLanguageWarning && (
  54           <div className="alert alert-warning" role="alert">
  55             {I18NextService.i18n.t("undetermined_language_warning")}
  56           </div>
  57         )}
  58         <div className="mb-3 row">
  59           <label
  60             className={classNames(
  61               "col-form-label",
  62               `col-sm-${this.props.multiple ? 3 : 2}`
  63             )}
  64             htmlFor={this.id}
  65           >
  66             {I18NextService.i18n.t(
  67               this.props.multiple ? "language_plural" : "language"
  68             )}
  69           </label>
  70           <div
  71             className={classNames(`col-sm-${this.props.multiple ? 9 : 10}`, {
  72               "input-group": this.props.multiple,
  73             })}
  74           >
  75             {this.selectBtn}
  76             {this.props.multiple && (
  77               <button
  78                 className="btn btn-outline-secondary"
  79                 onClick={linkEvent(this, this.handleDeselectAll)}
  80               >
  81                 <Icon icon="x" />
  82               </button>
  83             )}
  84           </div>
  85         </div>
  86       </div>
  87     );
  88   }
  89
  90   get selectBtn() {
  91     const selectedLangs = this.props.selectedLanguageIds;
  92     const filteredLangs = selectableLanguages(
  93       this.props.allLanguages,
  94       this.props.siteLanguages,
  95       this.props.showAll,
  96       this.props.showSite,
  97       UserService.Instance.myUserInfo
  98     );
  99
 100     return (
 101       <select
 102         className={classNames("form-select w-auto", {
 103           "d-inline-block": !this.props.iconVersion,
 104         })}
 105         id={this.id}
 106         onChange={linkEvent(this, this.handleLanguageChange)}
 107         aria-label={I18NextService.i18n.t("language_select_placeholder")}
 108         multiple={this.props.multiple}
 109         disabled={this.props.disabled}
 110       >
 111         {!this.props.multiple && (
 112           <option selected disabled hidden>
 113             {I18NextService.i18n.t("language_select_placeholder")}
 114           </option>
 115         )}
 116         {filteredLangs.map(l => (
 117           <option
 118             key={l.id}
 119             value={l.id}
 120             selected={selectedLangs?.includes(l.id)}
 121           >
 122             {l.name}
 123           </option>
 124         ))}
 125       </select>
 126     );
 127   }
 128
 129   handleLanguageChange(i: LanguageSelect, event: any) {
 130     const options: HTMLOptionElement[] = Array.from(event.target.options);
 131     const selected: number[] = options
 132       .filter(o => o.selected)
 133       .map(o => Number(o.value));
 134
 135     i.props.onChange(selected);
 136   }
 137
 138   handleDeselectAll(i: LanguageSelect, event: any) {
 139     event.preventDefault();
 140     i.props.onChange([]);
 141   }
 142 }