Add remote mentions warning when composing a private status

app/assets/javascripts/components/features/compose/components/compose_form.jsx

@@ -36,6 +36,8 @@ const ComposeForm = React.createClass({
     in_reply_to: ImmutablePropTypes.map,
     media_count: React.PropTypes.number,
     me: React.PropTypes.number,
+    needsPrivacyWarning: React.PropTypes.bool,
+    mentionedDomains: React.PropTypes.array.isRequired,
     onChange: React.PropTypes.func.isRequired,
     onSubmit: React.PropTypes.func.isRequired,
     onCancelReply: React.PropTypes.func.isRequired,
@@ -117,16 +119,29 @@ const ComposeForm = React.createClass({
   },
 
   render () {
-    const { intl }  = this.props;
+    const { intl, needsPrivacyWarning, mentionedDomains } = this.props;
+    const disabled = this.props.is_submitting || this.props.is_uploading;
+
     let replyArea      = '';
     let publishText    = '';
-    const disabled  = this.props.is_submitting || this.props.is_uploading;
+    let privacyWarning = '';
+    let reply_to_other = !!this.props.in_reply_to && (this.props.in_reply_to.getIn(['account', 'id']) !== this.props.me);
 
     if (this.props.in_reply_to) {
       replyArea = <ReplyIndicator status={this.props.in_reply_to} onCancel={this.props.onCancelReply} />;
     }
 
-    let reply_to_other = !!this.props.in_reply_to && (this.props.in_reply_to.getIn(['account', 'id']) !== this.props.me);
+    if (needsPrivacyWarning) {
+      privacyWarning = (
+        <div className='compose-form__warning'>
+          <FormattedMessage
+            id='compose_form.privacy_disclaimer'
+            defaultMessage='Your private status will be delivered to mentioned users on {domains}. Do you trust {domainsCount, plural, one {that server} other {those servers}} to not leak your status?'
+            values={{ domains: <strong>{mentionedDomains.join(', ')}</strong>, domainsCount: mentionedDomains.length }}
+          />
+        </div>
+      );
+    }
 
     if (this.props.private) {
       publishText = <span><i className='fa fa-lock' /> {intl.formatMessage(messages.publish)}</span>;
@@ -142,6 +157,7 @@ const ComposeForm = React.createClass({
           </div>
         </Collapsable>
 
+        {privacyWarning}
         {replyArea}
 
         <AutosuggestTextarea
@@ -174,13 +190,6 @@ const ComposeForm = React.createClass({
           <span className='compose-form__label__text'><FormattedMessage id='compose_form.private' defaultMessage='Mark as private' /></span>
         </label>
 
-        <Motion defaultStyle={{ opacity: 0, height: 0 }}, style={{ opacity: spring((this.props.private || reply_to_other) ? 0 : 100), height: spring((this.props.private || reply_to_other) ? 0 : 39.5) }}>
-            <label className='compose-form__label' style={{ height: `${height}px`, overflow: 'hidden', opacity: opacity / 100 }}>
-              <span className='compose-form__label__text'><FormattedMessage id='compose_form.privacy_disclaimer' defaultMessage='Warning: Private posts are not encrypted, and could be read or boosted by instances or people who do not respect post privacy. This is not true privacy. Do not post senstive information.' /></span>
-            </label>
-          }
-        </Motion>
-
         <Collapsable isVisible={!(this.props.private || reply_to_other)} fullHeight={39.5}>
           <label className='compose-form__label'>
             <Toggle checked={this.props.unlisted} onChange={this.handleChangeListability} />

app/assets/javascripts/components/features/compose/containers/compose_form_container.jsx

@@ -19,6 +19,8 @@ const makeMapStateToProps = () => {
   const getStatus = makeGetStatus();
 
   const mapStateToProps = function (state, props) {
+    const mentionedUsernamesWithDomains = state.getIn(['compose', 'text']).match(/(?:^|[^\/\w])@([a-z0-9_]+@[a-z0-9\.\-]+)/ig);
+
     return {
       text: state.getIn(['compose', 'text']),
       suggestion_token: state.getIn(['compose', 'suggestion_token']),
@@ -34,6 +36,8 @@ const makeMapStateToProps = () => {
       in_reply_to: getStatus(state, state.getIn(['compose', 'in_reply_to'])),
       media_count: state.getIn(['compose', 'media_attachments']).size,
       me: state.getIn(['compose', 'me']),
+      needsPrivacyWarning: state.getIn(['compose', 'private']) && mentionedUsernamesWithDomains !== null,
+      mentionedDomains: mentionedUsernamesWithDomains !== null ? [...new Set(mentionedUsernamesWithDomains.map(item => item.split('@')[2]))] : []
     };
   };
 

app/assets/javascripts/components/locales/en.jsx

@@ -41,7 +41,7 @@ const en = {
   "compose_form.sensitive": "Mark media as sensitive",
   "compose_form.spoiler": "Hide text behind warning",
   "compose_form.private": "Mark as private",
-  "compose_form.privacy_disclaimer": "Warning: Private posts are not encrypted, and could be read or boosted by instances or people who do not respect post privacy. This is not true privacy. Do not post senstive information."
+  "compose_form.privacy_disclaimer": "Your private status will be delivered to mentioned users on {domains}. Do you trust {domainsCount, plural, one {that server} other {those servers}} to not leak your status?",
   "compose_form.unlisted": "Do not display in public timeline",
   "navigation_bar.edit_profile": "Edit profile",
   "navigation_bar.preferences": "Preferences",

app/assets/stylesheets/components.scss

@@ -78,6 +78,21 @@
   color: $color1;
 }
 
+.compose-form__warning {
+  color: $color2;
+  margin-bottom: 15px;
+  border: 1px solid $color3;
+  padding: 8px 10px;
+  border-radius: 4px;
+  font-size: 12px;
+  font-weight: 400;
+
+  strong {
+    color: $color5;
+    font-weight: 500;
+  }
+}
+
 .compose-form__label {
   display: block;
   line-height: 24px;