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 className="form-group row">
  51         <label
  52           className={classNames("col-form-label", {
  53             "col-sm-3": this.props.multiple,
  54             "col-sm-2": !this.props.multiple,
  55           })}
  56           htmlFor={this.id}
  57         >
  58           {i18n.t(this.props.multiple ? "language_plural" : "language")}
  59         </label>
  60         <div
  61           className={classNames("input-group", {
  62             "col-sm-9": this.props.multiple,
  63             "col-sm-10": !this.props.multiple,
  64           })}
  65         >
  66           {this.selectBtn}
  67           {this.props.multiple && (
  68             <div className="input-group-append">
  69               <button
  70                 className="input-group-text"
  71                 onClick={linkEvent(this, this.handleDeselectAll)}
  72               >
  73                 <Icon icon="x" />
  74               </button>
  75             </div>
  76           )}
  77         </div>
  78       </div>
  79     );
  80   }
  81
  82   get selectBtn() {
  83     let selectedLangs = this.props.selectedLanguageIds;
  84     let filteredLangs = selectableLanguages(
  85       this.props.allLanguages,
  86       this.props.siteLanguages,
  87       this.props.showAll,
  88       this.props.showSite,
  89       UserService.Instance.myUserInfo
  90     );
  91
  92     return (
  93       <select
  94         className={classNames("lang-select-action", {
  95           "form-control custom-select": !this.props.iconVersion,
  96           "btn btn-sm text-muted": this.props.iconVersion,
  97         })}
  98         id={this.id}
  99         onChange={linkEvent(this, this.handleLanguageChange)}
 100         aria-label="action"
 101         multiple={this.props.multiple}
 102       >
 103         {filteredLangs.map(l => (
 104           <option
 105             key={l.id}
 106             value={l.id}
 107             selected={selectedLangs?.includes(l.id)}
 108           >
 109             {l.name}
 110           </option>
 111         ))}
 112       </select>
 113     );
 114   }
 115
 116   handleLanguageChange(i: LanguageSelect, event: any) {
 117     let options: HTMLOptionElement[] = Array.from(event.target.options);
 118     let selected: number[] = options
 119       .filter(o => o.selected)
 120       .map(o => Number(o.value));
 121
 122     i.props.onChange(selected);
 123   }
 124
 125   handleDeselectAll(i: LanguageSelect, event: any) {
 126     event.preventDefault();
 127     i.props.onChange([]);
 128   }
 129 }