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

   1 import classNames from "classnames";
   2 import { Component, linkEvent } from "inferno";
   3 import { Language } from "lemmy-js-client";
   4 import { i18n } from "../../i18next";
   5 import { UserService } from "../../services/UserService";
   6 import { randomStr, selectableLanguages } from "../../utils";
   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 }
  19
  20 export class LanguageSelect extends Component<LanguageSelectProps, any> {
  21   private id = `language-select-${randomStr()}`;
  22
  23   constructor(props: any, context: any) {
  24     super(props, context);
  25   }
  26
  27   componentDidMount() {
  28     this.setSelectedValues();
  29   }
  30
  31   // Necessary because there is no HTML way to set selected for multiple in value=
  32   setSelectedValues() {
  33     let ids = this.props.selectedLanguageIds?.map(toString);
  34     if (ids) {
  35       let select = (document.getElementById(this.id) as HTMLSelectElement)
  36         .options;
  37       for (let i = 0; i < select.length; i++) {
  38         let o = select[i];
  39         if (ids.includes(o.value)) {
  40           o.selected = true;
  41         }
  42       }
  43     }
  44   }
  45
  46   render() {
  47     return this.props.iconVersion ? (
  48       this.selectBtn
  49     ) : (
  50       <div>
  51         <div className="alert alert-warning" role="alert">
  52           {i18n.t("undetermined_language_warning")}
  53         </div>
  54         <div className="form-group row">
  55           <label
  56             className={classNames("col-form-label", {
  57               "col-sm-3": this.props.multiple,
  58               "col-sm-2": !this.props.multiple,
  59             })}
  60             htmlFor={this.id}
  61           >
  62             {i18n.t(this.props.multiple ? "language_plural" : "language")}
  63           </label>
  64           <div
  65             className={classNames("input-group", {
  66               "col-sm-9": this.props.multiple,
  67               "col-sm-10": !this.props.multiple,
  68             })}
  69           >
  70             {this.selectBtn}
  71             {this.props.multiple && (
  72               <div className="input-group-append">
  73                 <button
  74                   className="input-group-text"
  75                   onClick={linkEvent(this, this.handleDeselectAll)}
  76                 >
  77                   <Icon icon="x" />
  78                 </button>
  79               </div>
  80             )}
  81           </div>
  82         </div>
  83       </div>
  84     );
  85   }
  86
  87   get selectBtn() {
  88     let selectedLangs = this.props.selectedLanguageIds;
  89     let filteredLangs = selectableLanguages(
  90       this.props.allLanguages,
  91       this.props.siteLanguages,
  92       this.props.showAll,
  93       this.props.showSite,
  94       UserService.Instance.myUserInfo
  95     );
  96
  97     return (
  98       <select
  99         className={classNames("lang-select-action", {
 100           "form-control custom-select": !this.props.iconVersion,
 101           "btn btn-sm text-muted": this.props.iconVersion,
 102         })}
 103         id={this.id}
 104         onChange={linkEvent(this, this.handleLanguageChange)}
 105         aria-label="action"
 106         multiple={this.props.multiple}
 107       >
 108         {filteredLangs.map(l => (
 109           <option
 110             key={l.id}
 111             value={l.id}
 112             selected={selectedLangs?.includes(l.id)}
 113           >
 114             {l.name}
 115           </option>
 116         ))}
 117       </select>
 118     );
 119   }
 120
 121   handleLanguageChange(i: LanguageSelect, event: any) {
 122     let options: HTMLOptionElement[] = Array.from(event.target.options);
 123     let selected: number[] = options
 124       .filter(o => o.selected)
 125       .map(o => Number(o.value));
 126
 127     i.props.onChange(selected);
 128   }
 129
 130   handleDeselectAll(i: LanguageSelect, event: any) {
 131     event.preventDefault();
 132     i.props.onChange([]);
 133   }
 134 }