add <select> to settings pane

app/javascript/flavours/glitch/features/local_settings/page/index.jsx

@@ -6,6 +6,7 @@ import { defineMessages, FormattedMessage, injectIntl } from "react-intl";
 
 import ImmutablePropTypes from "react-immutable-proptypes";
 
+import { languages as preloadedLanguages } from "flavours/glitch/initial_state";
 
 //  Our imports
 import LocalSettingsPageItem from "./item";
@@ -35,6 +36,12 @@ const messages = defineMessages({
   direct: { id: "privacy.direct.short", defaultMessage: "Mentioned people only" },
 });
 
+const langs = []
+
+for (const lang of preloadedLanguages) {
+  langs.push({"value": lang[0], "label": lang[1]})
+}
+
 class LocalSettingsPage extends PureComponent {
 
   static propTypes = {
@@ -203,6 +210,16 @@ class LocalSettingsPage extends PureComponent {
     ({ intl, onChange, settings }) => (
       <div className='glitch local-settings__page compose_box_opts'>
         <h1><FormattedMessage id='settings.compose_box_opts' defaultMessage='Compose box' /></h1>
+        <LocalSettingsPageItem
+          settings={settings}
+          item={["default_language"]}
+          id='mastodon-settings--default-language'
+          select={langs}
+          onChange={onChange}
+        >
+          <FormattedMessage id='settings.default_language' defaultMessage='Default language for new toots' />
+        </LocalSettingsPageItem>
+
         <LocalSettingsPageItem
           settings={settings}
           item={["always_show_spoilers_field"]}

app/javascript/flavours/glitch/features/local_settings/page/item/index.jsx

@@ -39,7 +39,7 @@ export default class LocalSettingsPageItem extends PureComponent {
 
   render () {
     const { handleChange } = this;
-    const { settings, item, id, inputProps, options, children, dependsOn, dependsOnNot, placeholder, disabled } = this.props;
+    const { settings, item, id, inputProps, select, options, children, dependsOn, dependsOnNot, placeholder, disabled } = this.props;
     let enabled = !disabled;
 
     if (dependsOn) {
@@ -52,6 +52,31 @@ export default class LocalSettingsPageItem extends PureComponent {
         enabled = enabled && !settings.getIn(dependsOnNot[i]);
       }
     }
+    
+    if (select && select.length > 0) {
+      const currentValue = settings.getIn(item);
+      const optionElems = select && select.length > 0 && select.map((opt) => {
+        return (
+          <option
+            value={opt.value}
+            selected={currentValue === opt.value}
+          >
+            {opt.label}
+          </option>
+        )
+      })
+      return (
+        <div className='glitch local-settings__page__item select'>
+          <fieldset>
+            <label>Default language:
+              <select>
+                {optionElems}
+              </select>
+            </label>
+          </fieldset>
+        </div>
+      );
+    }
 
     if (options && options.length > 0) {
       const currentValue = settings.getIn(item);