Add opt-in feature to have the spoilers field always on (fixes #634)

app/javascript/flavours/glitch/features/composer/index.js

@@ -51,6 +51,7 @@ import { privacyPreference } from 'flavours/glitch/util/privacy_preference';
 
 //  State mapping.
 function mapStateToProps (state) {
+  const spoilersAlwaysOn = state.getIn(['local_settings', 'always_show_spoilers_field']);
   const inReplyTo = state.getIn(['compose', 'in_reply_to']);
   const replyPrivacy = inReplyTo ? state.getIn(['statuses', inReplyTo, 'visibility']) : null;
   const sideArmBasePrivacy = state.getIn(['local_settings', 'side_arm']);
@@ -85,12 +86,13 @@ function mapStateToProps (state) {
     sideArm: sideArmPrivacy,
     sensitive: state.getIn(['compose', 'sensitive']),
     showSearch: state.getIn(['search', 'submitted']) && !state.getIn(['search', 'hidden']),
-    spoiler: state.getIn(['compose', 'spoiler']),
+    spoiler: spoilersAlwaysOn || state.getIn(['compose', 'spoiler']),
     spoilerText: state.getIn(['compose', 'spoiler_text']),
     suggestionToken: state.getIn(['compose', 'suggestion_token']),
     suggestions: state.getIn(['compose', 'suggestions']),
     text: state.getIn(['compose', 'text']),
     anyMedia: state.getIn(['compose', 'media_attachments']).size > 0,
+    spoilersAlwaysOn: spoilersAlwaysOn,
   };
 };
 
@@ -376,6 +378,7 @@ class Composer extends React.Component {
       spoilerText,
       suggestions,
       text,
+      spoilersAlwaysOn,
     } = this.props;
 
     let disabledButton = isSubmitting || isUploading || (!!text.length && !text.trim().length && !anyMedia);
@@ -443,7 +446,7 @@ class Composer extends React.Component {
           onDoodleOpen={onOpenDoodleModal}
           onModalClose={onCloseModal}
           onModalOpen={onOpenActionsModal}
-          onToggleSpoiler={onChangeSpoilerness}
+          onToggleSpoiler={spoilersAlwaysOn ? null : onChangeSpoilerness}
           onUpload={onUpload}
           privacy={privacy}
           resetFileKey={resetFileKey}
@@ -515,6 +518,7 @@ Composer.propTypes = {
   onUnmount: PropTypes.func,
   onUpload: PropTypes.func,
   anyMedia: PropTypes.bool,
+  spoilersAlwaysOn: PropTypes.bool,
 };
 
 //  Connecting and export.

app/javascript/flavours/glitch/features/composer/options/index.js

@@ -285,6 +285,7 @@ export default class ComposerOptions extends React.PureComponent {
           title={intl.formatMessage(messages.change_privacy)}
           value={privacy}
         />
+        {onToggleSpoiler && (
           <TextIconButton
             active={spoiler}
             ariaControls='glitch.composer.spoiler.input'
@@ -292,6 +293,7 @@ export default class ComposerOptions extends React.PureComponent {
             onClick={onToggleSpoiler}
             title={intl.formatMessage(messages.spoiler)}
           />
+        )}
         <Dropdown
           active={advancedOptions && advancedOptions.some(value => !!value)}
           disabled={disabled}

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

@@ -75,6 +75,14 @@ export default class LocalSettingsPage extends React.PureComponent {
         </section>
         <section>
           <h2><FormattedMessage id='settings.compose_box_opts' defaultMessage='Compose box options' /></h2>
+          <LocalSettingsPageItem
+            settings={settings}
+            item={['always_show_spoilers_field']}
+            id='mastodon-settings--always_show_spoilers_field'
+            onChange={onChange}
+          >
+            <FormattedMessage id='settings.always_show_spoilers_field' defaultMessage='Always enable the Content Warning field' />
+          </LocalSettingsPageItem>
           <LocalSettingsPageItem
             settings={settings}
             item={['side_arm']}

app/javascript/flavours/glitch/reducers/local_settings.js

@@ -12,6 +12,7 @@ const initialState = ImmutableMap({
   side_arm  : 'none',
   side_arm_reply_mode : 'keep',
   show_reply_count : false,
+  always_show_spoilers_field: false,
   collapsed : ImmutableMap({
     enabled     : true,
     auto        : ImmutableMap({