Support explicit addressing

app/soapbox/actions/compose.js

@@ -68,6 +68,9 @@ export const COMPOSE_SCHEDULE_ADD    = 'COMPOSE_SCHEDULE_ADD';
 export const COMPOSE_SCHEDULE_SET    = 'COMPOSE_SCHEDULE_SET';
 export const COMPOSE_SCHEDULE_REMOVE = 'COMPOSE_SCHEDULE_REMOVE';
 
+export const COMPOSE_ADD_TO_MENTIONS = 'COMPOSE_ADD_TO_MENTIONS';
+export const COMPOSE_REMOVE_FROM_MENTIONS = 'COMPOSE_REMOVE_FROM_MENTIONS';
+
 const messages = defineMessages({
   uploadErrorLimit: { id: 'upload_error.limit', defaultMessage: 'File upload limit exceeded.' },
   uploadErrorPoll:  { id: 'upload_error.poll', defaultMessage: 'File upload not allowed with polls.' },
@@ -93,10 +96,14 @@ export function changeCompose(text) {
 export function replyCompose(status, routerHistory) {
   return (dispatch, getState) => {
     const state = getState();
+    const instance = state.get('instance');
+    const { explicitAddressing } = getFeatures(instance);
+
     dispatch({
       type: COMPOSE_REPLY,
       status: status,
       account: state.getIn(['accounts', state.get('me')]),
+      explicitAddressing,
     });
 
     dispatch(openModal('COMPOSE'));
@@ -183,6 +190,7 @@ export function submitCompose(routerHistory, force = false) {
 
     const status = state.getIn(['compose', 'text'], '');
     const media  = state.getIn(['compose', 'media_attachments']);
+    let to       = state.getIn(['compose', 'to'], null);
 
     if (!validateSchedule(state)) {
       dispatch(snackbar.error(messages.scheduleError));
@@ -200,6 +208,13 @@ export function submitCompose(routerHistory, force = false) {
       return;
     }
 
+    if (to && status) {
+      const mentions = status.match(/(?:^|\s|\.)@([a-z0-9_]+(?:@[a-z0-9\.\-]+)?)/g); // not a perfect regex
+
+      if (mentions)
+        to = to.union(mentions.map(mention => mention.trim().slice(1)));
+    }
+
     dispatch(submitComposeRequest());
     dispatch(closeModal());
 
@@ -215,6 +230,7 @@ export function submitCompose(routerHistory, force = false) {
       content_type: state.getIn(['compose', 'content_type']),
       poll: state.getIn(['compose', 'poll'], null),
       scheduled_at: state.getIn(['compose', 'schedule'], null),
+      to,
     };
 
     dispatch(createStatus(params, idempotencyKey)).then(function(data) {
@@ -643,3 +659,27 @@ export function openComposeWithText(text = '') {
     dispatch(changeCompose(text));
   };
 }
+
+export function addToMentions(accountId) {
+  return (dispatch, getState) => {
+    const state = getState();
+    const acct = state.getIn(['accounts', accountId, 'acct']);
+
+    return dispatch({
+      type: COMPOSE_ADD_TO_MENTIONS,
+      account: acct,
+    });
+  };
+}
+
+export function removeFromMentions(accountId) {
+  return (dispatch, getState) => {
+    const state = getState();
+    const acct = state.getIn(['accounts', accountId, 'acct']);
+
+    return dispatch({
+      type: COMPOSE_REMOVE_FROM_MENTIONS,
+      account: acct,
+    });
+  };
+}

app/soapbox/actions/statuses.js

@@ -3,6 +3,7 @@ import { deleteFromTimelines } from './timelines';
 import { importFetchedStatus, importFetchedStatuses } from './importer';
 import { openModal } from './modal';
 import { isLoggedIn } from 'soapbox/utils/auth';
+import { getFeatures } from 'soapbox/utils/features';
 import { shouldHaveCard } from 'soapbox/utils/status';
 
 export const STATUS_CREATE_REQUEST = 'STATUS_CREATE_REQUEST';
@@ -95,10 +96,17 @@ export function fetchStatus(id) {
 }
 
 export function redraft(status, raw_text) {
-  return {
-    type: REDRAFT,
-    status,
-    raw_text,
+  return (dispatch, getState) => {
+    const state = getState();
+    const instance = state.get('instance');
+    const { explicitAddressing } = getFeatures(instance);
+
+    dispatch({
+      type: REDRAFT,
+      status,
+      raw_text,
+      explicitAddressing,
+    });
   };
 }
 

app/soapbox/components/status.js

@@ -8,6 +8,7 @@ import RelativeTimestamp from './relative_timestamp';
 import DisplayName from './display_name';
 import StatusContent from './status_content';
 import StatusActionBar from './status_action_bar';
+import StatusReplyMentions from './status_reply_mentions';
 import AttachmentThumbs from './attachment_thumbs';
 import Card from '../features/status/components/card';
 import { injectIntl, FormattedMessage } from 'react-intl';
@@ -538,6 +539,8 @@ class Status extends ImmutablePureComponent {
               </div>
             )}
 
+            <StatusReplyMentions status={this._properStatus()} />
+
             <StatusContent
               status={status}
               reblogContent={reblogContent}

app/soapbox/components/status_reply_mentions.js

@@ -0,0 +1,47 @@
+import React from 'react';
+import { FormattedMessage, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { Link } from 'react-router-dom';
+import HoverRefWrapper from 'soapbox/components/hover_ref_wrapper';
+
+export default @injectIntl
+class StatusReplyMentions extends ImmutablePureComponent {
+
+  static propTypes = {
+    status: ImmutablePropTypes.map.isRequired,
+  }
+
+  render() {
+    const { status } = this.props;
+
+    const to = status.get('mentions', []);
+
+    if (!status.get('in_reply_to_id') || !to || to.size === 0) {
+      return null;
+    }
+
+    return (
+      <div className='reply-mentions'>
+        <FormattedMessage
+          id='reply_mentions.reply'
+          defaultMessage='Replying to {accounts}{more}'
+          values={{
+            accounts: to.slice(0, 2).map(account => (<>
+              <HoverRefWrapper accountId={account.get('id')} inline>
+                <Link to={`/@${account.get('acct')}`} className='reply-mentions__account'>@{account.get('acct').split('@')[0]}</Link>
+              </HoverRefWrapper>
+              {' '}
+            </>)),
+            more: to.size > 2 && (
+              <Link to={`/@${status.getIn(['account', 'acct'])}/posts/${status.get('id')}/mentions`}>
+                <FormattedMessage id='reply_mentions.more' defaultMessage='and {count} more' values={{ count: to.size - 2 }} />
+              </Link>
+            ),
+          }}
+        />
+      </div>
+    );
+  }
+
+}

app/soapbox/features/compose/components/compose_form.js

@@ -7,6 +7,7 @@ import PropTypes from 'prop-types';
 import classNames from 'classnames';
 import { Link } from 'react-router-dom';
 import ReplyIndicatorContainer from '../containers/reply_indicator_container';
+import ReplyMentions from '../containers/reply_mentions_container';
 import AutosuggestTextarea from '../../../components/autosuggest_textarea';
 import AutosuggestInput from '../../../components/autosuggest_input';
 import PollButtonContainer from '../containers/poll_button_container';
@@ -308,7 +309,9 @@ export default class ComposeForm extends ImmutablePureComponent {
 
         <WarningContainer />
 
-        { !shouldCondense && <ReplyIndicatorContainer /> }
+        {!shouldCondense && <ReplyIndicatorContainer />}
+
+        {!shouldCondense && <ReplyMentions />}
 
         <div className={`spoiler-input ${this.props.spoiler ? 'spoiler-input--visible' : ''}`}>
           <AutosuggestInput

app/soapbox/features/compose/components/reply_mentions.js

@@ -0,0 +1,44 @@
+import React from 'react';
+import { FormattedMessage, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import PropTypes from 'prop-types';
+
+export default @injectIntl
+class ReplyMentions extends ImmutablePureComponent {
+
+  static propTypes = {
+    onOpenMentionsModal: PropTypes.func.isRequired,
+    explicitAddressing: PropTypes.bool,
+    to: ImmutablePropTypes.orderedSet,
+    isReply: PropTypes.bool,
+  };
+
+  handleClick = e => {
+    e.preventDefault();
+
+    this.props.onOpenMentionsModal();
+  }
+
+  render() {
+    const { explicitAddressing, to, isReply } = this.props;
+
+    if (!explicitAddressing || !isReply || !to || to.length === 0) {
+      return null;
+    }
+
+    return (
+      <a href='#' className='reply-mentions' onClick={this.handleClick}>
+        <FormattedMessage
+          id='reply_mentions.reply'
+          defaultMessage='Replying to {accounts}{more}'
+          values={{
+            accounts: to.slice(0, 2).map(acct => <><span className='reply-mentions__account'>@{acct.split('@')[0]}</span>{' '}</>),
+            more: to.size > 2 && <FormattedMessage id='reply_mentions.more' defaultMessage='and {count} more' values={{ count: to.size - 2 }} />,
+          }}
+        />
+      </a>
+    );
+  }
+
+}

app/soapbox/features/compose/containers/reply_mentions_container.js

@@ -0,0 +1,45 @@
+import { connect } from 'react-redux';
+import { makeGetStatus } from 'soapbox/selectors';
+import { openModal } from 'soapbox/actions/modal';
+import { getFeatures } from 'soapbox/utils/features';
+import ReplyMentions from '../components/reply_mentions';
+
+const makeMapStateToProps = () => {
+  const getStatus = makeGetStatus();
+
+  return state => {
+    const instance = state.get('instance');
+    const { explicitAddressing } = getFeatures(instance);
+
+    if (!explicitAddressing) {
+      return {
+        explicitAddressing: false,
+      };
+    }
+
+    const status = getStatus(state, { id: state.getIn(['compose', 'in_reply_to']) });
+
+    if (!status) {
+      return {
+        isReply: false,
+      };
+    }
+    const to = state.getIn(['compose', 'to']);
+
+    return {
+      to,
+      isReply: true,
+      explicitAddressing: true,
+    };
+  };
+};
+
+const mapDispatchToProps = dispatch => ({
+  onOpenMentionsModal() {
+    dispatch(openModal('REPLY_MENTIONS', {
+      onCancel: () => dispatch(openModal('COMPOSE')),
+    }));
+  },
+});
+
+export default connect(makeMapStateToProps, mapDispatchToProps)(ReplyMentions);

app/soapbox/features/mentions/index.js

@@ -0,0 +1,96 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import { OrderedSet as ImmutableOrderedSet } from 'immutable';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import LoadingIndicator from '../../components/loading_indicator';
+import MissingIndicator from '../../components/missing_indicator';
+import { fetchStatus } from '../../actions/statuses';
+import { injectIntl, defineMessages } from 'react-intl';
+import AccountContainer from '../../containers/account_container';
+import Column from '../ui/components/column';
+import ScrollableList from '../../components/scrollable_list';
+import { makeGetStatus } from '../../selectors';
+
+const messages = defineMessages({
+  heading: { id: 'column.mentions', defaultMessage: 'Mentions' },
+});
+
+const mapStateToProps = (state, props) => {
+  const getStatus = makeGetStatus();
+  const status = getStatus(state, {
+    id: props.params.statusId,
+    username: props.params.username,
+  });
+
+  return {
+    status,
+    accountIds: status ? ImmutableOrderedSet(status.get('mentions').map(m => m.get('id'))) : null,
+  };
+};
+
+export default @connect(mapStateToProps)
+@injectIntl
+class Mentions extends ImmutablePureComponent {
+
+  static propTypes = {
+    intl: PropTypes.object.isRequired,
+    params: PropTypes.object.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    accountIds: ImmutablePropTypes.orderedSet,
+    status: ImmutablePropTypes.map,
+  };
+
+  fetchData = () => {
+    const { dispatch, params } = this.props;
+    const { statusId } = params;
+
+    dispatch(fetchStatus(statusId));
+  }
+
+  componentDidMount() {
+    this.fetchData();
+  }
+
+  componentDidUpdate(prevProps) {
+    const { params } = this.props;
+
+    if (params.statusId !== prevProps.params.statusId) {
+      this.fetchData();
+    }
+  }
+
+  render() {
+    const { intl, accountIds, status } = this.props;
+
+    if (!accountIds) {
+      return (
+        <Column>
+          <LoadingIndicator />
+        </Column>
+      );
+    }
+
+    if (!status) {
+      return (
+        <Column>
+          <MissingIndicator />
+        </Column>
+      );
+    }
+
+    return (
+      <Column heading={intl.formatMessage(messages.heading)}>
+        <ScrollableList
+          scrollKey='reblogs'
+        >
+          {accountIds.map(id =>
+            <AccountContainer key={id} id={id} withNote={false} />,
+          )}
+        </ScrollableList>
+      </Column>
+    );
+  }
+
+}

app/soapbox/features/reply_mentions/account.js

@@ -0,0 +1,93 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { connect } from 'react-redux';
+import { makeGetAccount } from 'soapbox/selectors';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import Avatar from 'soapbox/components/avatar';
+import DisplayName from 'soapbox/components/display_name';
+import IconButton from 'soapbox/components/icon_button';
+import { defineMessages, injectIntl } from 'react-intl';
+import { addToMentions, removeFromMentions } from 'soapbox/actions/compose';
+import { fetchAccount } from 'soapbox/actions/accounts';
+
+const messages = defineMessages({
+  remove: { id: 'reply_mentions.account.remove', defaultMessage: 'Remove from mentions' },
+  add: { id: 'reply_mentions.account.add', defaultMessage: 'Add to mentions' },
+});
+
+const makeMapStateToProps = () => {
+  const getAccount = makeGetAccount();
+
+  const mapStateToProps = (state, { accountId }) => {
+    const account = getAccount(state, accountId);
+
+    return {
+      added: !!account && state.getIn(['compose', 'to']).includes(account.get('acct')),
+      account,
+    };
+  };
+
+  return mapStateToProps;
+};
+
+const mapDispatchToProps = (dispatch, { accountId }) => ({
+  onRemove: () => dispatch(removeFromMentions(accountId)),
+  onAdd: () => dispatch(addToMentions(accountId)),
+  fetchAccount: () => dispatch(fetchAccount(accountId)),
+});
+
+export default @connect(makeMapStateToProps, mapDispatchToProps)
+@injectIntl
+class Account extends ImmutablePureComponent {
+
+  static propTypes = {
+    accountId: PropTypes.string.isRequired,
+    intl: PropTypes.object.isRequired,
+    onRemove: PropTypes.func.isRequired,
+    onAdd: PropTypes.func.isRequired,
+    added: PropTypes.bool,
+    author: PropTypes.bool,
+  };
+
+  static defaultProps = {
+    added: false,
+  };
+
+  componentDidMount() {
+    const { account, accountId } = this.props;
+
+    if (accountId && !account) {
+      this.props.fetchAccount(accountId);
+    }
+  }
+
+  render() {
+    const { account, intl, onRemove, onAdd, added, author } = this.props;
+
+    if (!account) return null;
+
+    let button;
+
+    if (added) {
+      button = <IconButton src={require('@tabler/icons/icons/x.svg')} title={intl.formatMessage(messages.remove)} onClick={onRemove} />;
+    } else {
+      button = <IconButton src={require('@tabler/icons/icons/plus.svg')} title={intl.formatMessage(messages.add)} onClick={onAdd} />;
+    }
+
+    return (
+      <div className='account'>
+        <div className='account__wrapper'>
+          <div className='account__display-name'>
+            <div className='account__avatar-wrapper'><Avatar account={account} size={36} /></div>
+            <DisplayName account={account} />
+          </div>
+
+          <div className='account__relationship'>
+            {!author && button}
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}

app/soapbox/features/status/components/detailed_status.js

@@ -1,9 +1,11 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import ImmutablePropTypes from 'react-immutable-proptypes';
+import { injectIntl } from 'react-intl';
 import Avatar from '../../../components/avatar';
 import DisplayName from '../../../components/display_name';
 import StatusContent from '../../../components/status_content';
+import StatusReplyMentions from '../../../components/status_reply_mentions';
 import MediaGallery from '../../../components/media_gallery';
 import { Link, NavLink } from 'react-router-dom';
 import { FormattedDate } from 'react-intl';
@@ -18,7 +20,8 @@ import StatusInteractionBar from './status_interaction_bar';
 import { getDomain } from 'soapbox/utils/accounts';
 import HoverRefWrapper from 'soapbox/components/hover_ref_wrapper';
 
-export default class DetailedStatus extends ImmutablePureComponent {
+export default @injectIntl
+class DetailedStatus extends ImmutablePureComponent {
 
   static contextTypes = {
     router: PropTypes.object,
@@ -82,6 +85,7 @@ export default class DetailedStatus extends ImmutablePureComponent {
     window.open(href, 'soapbox-intent', 'width=445,height=600,resizable=no,menubar=no,status=no,scrollbars=yes');
   }
 
+
   render() {
     const status = (this.props.status && this.props.status.get('reblog')) ? this.props.status.get('reblog') : this.props.status;
     const outerStyle = { boxSizing: 'border-box' };
@@ -185,6 +189,8 @@ export default class DetailedStatus extends ImmutablePureComponent {
             </div>
           )}
 
+          <StatusReplyMentions status={status} />
+
           <StatusContent
             status={status}
             expanded={!status.get('hidden')}

app/soapbox/features/ui/components/modal_root.js

@@ -21,6 +21,7 @@ import {
   FocalPointModal,
   HotkeysModal,
   ComposeModal,
+  ReplyMentionsModal,
   UnauthorizedModal,
   EditFederationModal,
   ComponentModal,
@@ -41,6 +42,7 @@ const MODAL_COMPONENTS = {
   'LIST_ADDER': ListAdder,
   'HOTKEYS': HotkeysModal,
   'COMPOSE': ComposeModal,
+  'REPLY_MENTIONS': ReplyMentionsModal,
   'UNAUTHORIZED': UnauthorizedModal,
   'CRYPTO_DONATE': CryptoDonateModal,
   'EDIT_FEDERATION': EditFederationModal,

app/soapbox/features/ui/components/reply_mentions_modal.js

@@ -0,0 +1,86 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { connect } from 'react-redux';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import IconButton from 'soapbox/components/icon_button';
+import { statusToMentionsAccountIdsArray } from 'soapbox/reducers/compose';
+import { makeGetStatus } from 'soapbox/selectors';
+import Account from '../../reply_mentions/account';
+
+const messages = defineMessages({
+  close: { id: 'lightbox.close', defaultMessage: 'Close' },
+  confirm: { id: 'confirmations.delete.confirm', defaultMessage: 'Delete' },
+});
+
+const makeMapStateToProps = () => {
+  const getStatus = makeGetStatus();
+
+  return state => {
+    const status = getStatus(state, { id: state.getIn(['compose', 'in_reply_to']) });
+
+    if (!status) {
+      return {
+        isReply: false,
+      };
+    }
+
+    const me = state.get('me');
+    const account = state.getIn(['accounts', me]);
+
+    const mentions = statusToMentionsAccountIdsArray(state, status, account);
+
+    return {
+      mentions,
+      author: status.getIn(['account', 'id']),
+      to: state.getIn(['compose', 'to']),
+      isReply: true,
+    };
+  };
+};
+
+class ComposeModal extends ImmutablePureComponent {
+
+  static propTypes = {
+    account: ImmutablePropTypes.map,
+    author: PropTypes.string,
+    intl: PropTypes.object.isRequired,
+    onClose: PropTypes.func.isRequired,
+    inReplyTo: PropTypes.string,
+    dispatch: PropTypes.func.isRequired,
+  };
+
+  onClickClose = () => {
+    const { onClose, onCancel } = this.props;
+    onClose('COMPOSE');
+    if (onCancel) onCancel();
+  };
+
+  render() {
+    const { intl, mentions, author } = this.props;
+
+    return (
+      <div className='modal-root__modal reply-mentions-modal'>
+        <div className='reply-mentions-modal__header'>
+          <IconButton
+            className='reply-mentions-modal__back'
+            src={require('@tabler/icons/icons/arrow-left.svg')}
+            onClick={this.onClickClose}
+            aria-label={intl.formatMessage(messages.close)}
+            title={intl.formatMessage(messages.close)}
+          />
+          <h3 className='reply-mentions-modal__header__title'>
+            <FormattedMessage id='navigation_bar.in_reply_to' defaultMessage='In reply to' />
+          </h3>
+        </div>
+        <div className='reply-mentions-modal__accounts'>
+          {mentions.map(accountId => <Account key={accountId} accountId={accountId} added author={author === accountId} />)}
+        </div>
+      </div>
+    );
+  }
+
+}
+
+export default injectIntl(connect(makeMapStateToProps)(ComposeModal));

app/soapbox/features/ui/index.js

@@ -58,6 +58,7 @@ import {
   Following,
   Reblogs,
   Reactions,
+  Mentions,
   Favourites,
   DirectTimeline,
   Conversations,
@@ -300,6 +301,7 @@ class SwitchingColumnsArea extends React.PureComponent {
         <WrappedRoute path='/@:username/posts/:statusId/reblogs' page={DefaultPage} component={Reblogs} content={children} />
         <WrappedRoute path='/@:username/posts/:statusId/likes' page={DefaultPage} component={Favourites} content={children} />
         <WrappedRoute path='/@:username/posts/:statusId/reactions/:reaction?' page={DefaultPage} component={Reactions} content={children} />
+        <WrappedRoute path='/@:username/posts/:statusId/mentions' page={DefaultPage} component={Mentions} content={children} />
         <Redirect from='/@:username/:statusId' to='/@:username/posts/:statusId' />
 
         <WrappedRoute path='/statuses/new' page={DefaultPage} component={NewStatus} content={children} exact />

app/soapbox/features/ui/util/async-components.js

@@ -102,6 +102,10 @@ export function Reactions() {
   return import(/* webpackChunkName: "features/reactions" */'../../reactions');
 }
 
+export function Mentions() {
+  return import(/* webpackChunkName: "features/mentions" */'../../mentions');
+}
+
 export function Favourites() {
   return import(/* webpackChunkName: "features/favourites" */'../../favourites');
 }
@@ -190,6 +194,10 @@ export function ComposeModal() {
   return import(/* webpackChunkName: "features/ui" */'../components/compose_modal');
 }
 
+export function ReplyMentionsModal() {
+  return import(/* webpackChunkName: "features/ui" */'../components/reply_mentions_modal');
+}
+
 export function UnauthorizedModal() {
   return import(/* webpackChunkName: "features/ui" */'../components/unauthorized_modal');
 }

app/soapbox/locales/pl.json

@@ -209,6 +209,7 @@
   "column.import_data": "Importuj dane",
   "column.info": "Informacje o serwerze",
   "column.lists": "Listy",
+  "column.mentions": "W odpowiedzi do",
   "column.mfa": "Uwierzytelnianie wieloetapowe",
   "column.mfa_cancel": "Anuluj",
   "column.mfa_confirm_button": "Potwierdź",
@@ -610,6 +611,7 @@
   "navigation_bar.mutes": "Wyciszeni użytkownicy",
   "navigation_bar.pins": "Przypięte wpisy",
   "navigation_bar.preferences": "Preferencje",
+  "navigation_bar.in_reply_to": "W odpowiedzi do",
   "navigation_bar.security": "Bezpieczeństwo",
   "navigation_bar.soapbox_config": "Konfiguracja Soapbox",
   "notification.chat_mention": "{name} wysłał(a) Ci wiadomośść",
@@ -754,6 +756,10 @@
   "remote_interaction.user_not_found_error": "Nie można odnaleźć podanego użytkownika",
   "remote_timeline.filter_message": "Przeglądasz oś czasu {instance}",
   "reply_indicator.cancel": "Anuluj",
+  "reply_mentions.account.add": "Dodaj do wspomnianych",
+  "reply_mentions.account.remove": "Usuń z wspomnianych",
+  "reply_mentions.more": "i {count} więcej",
+  "reply_mentions.reply": "W odpowiedzi do {accounts}{more}",
   "report.block": "Zablokuj {target}",
   "report.block_hint": "Czy chcesz też zablokować to konto?",
   "report.forward": "Przekaż na {target}",

app/soapbox/reducers/compose.js

@@ -39,6 +39,8 @@ import {
   COMPOSE_POLL_OPTION_CHANGE,
   COMPOSE_POLL_OPTION_REMOVE,
   COMPOSE_POLL_SETTINGS_CHANGE,
+  COMPOSE_ADD_TO_MENTIONS,
+  COMPOSE_REMOVE_FROM_MENTIONS,
 } from '../actions/compose';
 import { TIMELINE_DELETE } from '../actions/timelines';
 import { REDRAFT } from '../actions/statuses';
@@ -84,7 +86,7 @@ const initialPoll = ImmutableMap({
   multiple: false,
 });
 
-function statusToTextMentions(state, status, account) {
+const statusToTextMentions = (state, status, account) => {
   const author = status.getIn(['account', 'acct']);
   const mentions = status.get('mentions', []).map(m => m.get('acct'));
 
@@ -93,12 +95,31 @@ function statusToTextMentions(state, status, account) {
     .delete(account.get('acct'))
     .map(m => `@${m} `)
     .join('');
-}
+};
+
+export const statusToMentionsArray = (state, status, account) => {
+  const author = status.getIn(['account', 'acct']);
+  const mentions = status.get('mentions', []).map(m => m.get('acct'));
+
+  return ImmutableOrderedSet([author])
+    .concat(mentions)
+    .delete(account.get('acct'));
+};
+
+export const statusToMentionsAccountIdsArray = (state, status, account) => {
+  const author = status.getIn(['account', 'id']);
+  const mentions = status.get('mentions', []).map(m => m.get('id'));
+
+  return ImmutableOrderedSet([author])
+    .concat(mentions)
+    .delete(account.get('id'));
+};
 
 function clearAll(state) {
   return state.withMutations(map => {
     map.set('id', null);
     map.set('text', '');
+    map.set('to', ImmutableOrderedSet());
     map.set('spoiler', false);
     map.set('spoiler_text', '');
     map.set('content_type', state.get('default_content_type'));
@@ -197,6 +218,17 @@ const expandMentions = status => {
   return fragment.innerHTML;
 };
 
+const getExplicitMentions = (me, status) => {
+  const fragment = domParser.parseFromString(status.get('content'), 'text/html').documentElement;
+
+  const mentions = status
+    .get('mentions')
+    .filter(mention => !(fragment.querySelector(`a[href="${mention.get('url')}"]`) || mention.get('id') === me))
+    .map(m => m.get('acct'));
+
+  return ImmutableOrderedSet(mentions);
+};
+
 const getAccountSettings = account => {
   return account.getIn(['pleroma', 'settings_store', FE_NAME], ImmutableMap());
 };
@@ -290,7 +322,8 @@ export default function compose(state = initialState, action) {
   case COMPOSE_REPLY:
     return state.withMutations(map => {
       map.set('in_reply_to', action.status.get('id'));
-      map.set('text', statusToTextMentions(state, action.status, action.account));
+      map.set('to', action.explicitAddressing ? statusToMentionsArray(state, action.status, action.account) : undefined);
+      map.set('text', !action.explicitAddressing ? statusToTextMentions(state, action.status, action.account) : '');
       map.set('privacy', privacyPreference(action.status.get('visibility'), state.get('default_privacy')));
       map.set('focusDate', new Date());
       map.set('caretPosition', null);
@@ -373,6 +406,7 @@ export default function compose(state = initialState, action) {
   case REDRAFT:
     return state.withMutations(map => {
       map.set('text', action.raw_text || unescapeHTML(expandMentions(action.status)));
+      map.set('to', action.explicitAddressing ? getExplicitMentions(action.status.get('account', 'id'), action.status) : null);
       map.set('in_reply_to', action.status.get('in_reply_to_id'));
       map.set('privacy', action.status.get('visibility'));
       // TODO: Actually fix this rather than just removing it
@@ -416,6 +450,10 @@ export default function compose(state = initialState, action) {
     return state.updateIn(['poll', 'options'], options => options.delete(action.index));
   case COMPOSE_POLL_SETTINGS_CHANGE:
     return state.update('poll', poll => poll.set('expires_in', action.expiresIn).set('multiple', action.isMultiple));
+  case COMPOSE_ADD_TO_MENTIONS:
+    return state.update('to', mentions => mentions.add(action.account));
+  case COMPOSE_REMOVE_FROM_MENTIONS:
+    return state.update('to', mentions => mentions.delete(action.account));
   case ME_FETCH_SUCCESS:
     return importAccount(state, action.me);
   case ME_PATCH_SUCCESS:

app/soapbox/utils/features.js

@@ -75,6 +75,7 @@ export const getFeatures = createSelector([
       v.software === PLEROMA && gte(v.version, '2.4.50'),
     ]),
     remoteInteractionsAPI: v.software === PLEROMA && gte(v.version, '2.4.50'),
+    explicitAddressing: v.software === PLEROMA && gte(v.version, '1.0.0'),
   };
 });
 

app/styles/application.scss

@@ -50,6 +50,7 @@
 @import 'components/emoji-reacts';
 @import 'components/status';
 @import 'components/reply-indicator';
+@import 'components/reply-mentions';
 @import 'components/detailed-status';
 @import 'components/list-forms';
 @import 'components/media-gallery';

app/styles/components/modal.scss

@@ -725,7 +725,8 @@
   }
 }
 
-.compose-modal {
+.compose-modal,
+.reply-mentions-modal {
   overflow: hidden;
   background-color: var(--background-color);
   border-radius: 6px;
@@ -755,6 +756,15 @@
     }
   }
 
+  @media screen and (max-width: 895px) {
+    margin: 0;
+    border-radius: 0;
+    height: 100vh;
+    width: 100vw;
+  }
+}
+
+.compose-modal {
   &__close {
     position: absolute;
     right: 10px;
@@ -808,12 +818,27 @@
       padding: 10px 0;
     }
   }
+}
 
-  @media screen and (max-width: 895px) {
-    margin: 0;
-    border-radius: 0;
-    height: 100vh;
-    width: 100vw;
+.reply-mentions-modal {
+  &__back {
+    position: absolute;
+    left: 10px;
+    left: max(10px, env(safe-area-inset-right));
+    color: var(--primary-text-color--faint);
+
+    .svg-icon {
+      width: 24px;
+      height: 24px;
+    }
+  }
+
+  &__accounts {
+    display: block;
+    flex-direction: row;
+    flex: 1;
+    overflow-y: auto;
+    min-height: 300px;
   }
 }
 

app/styles/components/reply-mentions.scss

@@ -0,0 +1,24 @@
+.reply-mentions {
+  margin: 0 10px;
+  color: var(--primary-text-color--faint);
+  font-size: 15px;
+  text-decoration: none;
+
+  &__account,
+  a {
+    color: var(--highlight-text-color);
+    text-decoration: none;
+
+    &:hover {
+      text-decoration: underline;
+    }
+  }
+}
+
+.status__wrapper,
+.detailed-status {
+  .reply-mentions {
+    display: block;
+    margin: 4px 0 0 0;
+  }
+}