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-${randomStr()}`;
  24
  25   constructor(props: any, context: any) {
  26     super(props, context);
  27   }
  28
  29   componentDidMount() {
  30     this.setSelectedValues();
  31   }
  32
  33   // Necessary because there is no HTML way to set selected for multiple in value=
  34   setSelectedValues() {
  35     const ids = this.props.selectedLanguageIds?.map(toString);
  36     if (ids) {
  37       const select = (document.getElementById(this.id) as HTMLSelectElement)
  38         .options;
  39       for (let i = 0; i < select.length; i++) {
  40         const o = select[i];
  41         if (ids.includes(o.value)) {
  42           o.selected = true;
  43         }
  44       }
  45     }
  46   }
  47
  48   render() {
  49     return this.props.iconVersion ? (
  50       this.selectBtn
  51     ) : (
  52       <div className="language-select mb-3">
  53         <label
  54           className={classNames(
  55             "col-form-label",
  56             `col-sm-${this.props.multiple ? 3 : 2}`
  57           )}
  58           htmlFor={this.id}
  59         >
  60           {I18NextService.i18n.t(
  61             this.props.multiple ? "language_plural" : "language"
  62           )}
  63         </label>
  64         {this.props.multiple && this.props.showLanguageWarning && (
  65           <div
  66             id="lang-warning"
  67             className="alert small alert-warning"
  68             role="alert"
  69           >
  70             {I18NextService.i18n.t("undetermined_language_warning")}
  71           </div>
  72         )}
  73         <div
  74           className={classNames(`col-sm-${this.props.multiple ? 9 : 10}`, {
  75             "input-group": this.props.multiple,
  76           })}
  77         >
  78           {this.selectBtn}
  79           {this.props.multiple && (
  80             <button
  81               className="btn btn-outline-secondary"
  82               onClick={linkEvent(this, this.handleDeselectAll)}
  83             >
  84               <Icon icon="x" />
  85             </button>
  86           )}
  87         </div>
  88       </div>
  89     );
  90   }
  91
  92   get selectBtn() {
  93     const selectedLangs = this.props.selectedLanguageIds;
  94     const filteredLangs = selectableLanguages(
  95       this.props.allLanguages,
  96       this.props.siteLanguages,
  97       this.props.showAll,
  98       this.props.showSite,
  99       UserService.Instance.myUserInfo
 100     );
 101
 102     return (
 103       <select
 104         className={classNames("form-select w-auto", {
 105           "d-inline-block": !this.props.iconVersion,
 106         })}
 107         id={this.id}
 108         onChange={linkEvent(this, this.handleLanguageChange)}
 109         aria-label={I18NextService.i18n.t("language_select_placeholder")}
 110         aria-describedby={
 111           this.props.multiple && this.props.showLanguageWarning
 112             ? "lang-warning"
 113             : ""
 114         }
 115         multiple={this.props.multiple}
 116         disabled={this.props.disabled}
 117       >
 118         {!this.props.multiple && (
 119           <option selected disabled hidden>
 120             {I18NextService.i18n.t("language_select_placeholder")}
 121           </option>
 122         )}
 123         {filteredLangs.map(l => (
 124           <option
 125             key={l.id}
 126             value={l.id}
 127             selected={selectedLangs?.includes(l.id)}
 128           >
 129             {l.name}
 130           </option>
 131         ))}
 132       </select>
 133     );
 134   }
 135
 136   handleLanguageChange(i: LanguageSelect, event: any) {
 137     const options: HTMLOptionElement[] = Array.from(event.target.options);
 138     const selected: number[] = options
 139       .filter(o => o.selected)
 140       .map(o => Number(o.value));
 141
 142     i.props.onChange(selected);
 143   }
 144
 145   handleDeselectAll(i: LanguageSelect, event: any) {
 146     event.preventDefault();
 147     i.props.onChange([]);
 148   }
 149 }