Fix content-type being reset when editing toots (#1993)

Fixes #1990

app/javascript/flavours/glitch/actions/compose.js

@@ -93,12 +93,13 @@ export const ensureComposeIsVisible = (getState, routerHistory) => {
   }
 };
 
-export function setComposeToStatus(status, text, spoiler_text) {
+export function setComposeToStatus(status, text, spoiler_text, content_type) {
   return{
     type: COMPOSE_SET_STATUS,
     status,
     text,
     spoiler_text,
+    content_type,
   };
 };
 

app/javascript/flavours/glitch/actions/statuses.js

@@ -106,7 +106,7 @@ export const editStatus = (id, routerHistory) => (dispatch, getState) => {
   api(getState).get(`/api/v1/statuses/${id}/source`).then(response => {
     dispatch(fetchStatusSourceSuccess());
     ensureComposeIsVisible(getState, routerHistory);
-    dispatch(setComposeToStatus(status, response.data.text, response.data.spoiler_text));
+    dispatch(setComposeToStatus(status, response.data.text, response.data.spoiler_text, response.data.content_type));
   }).catch(error => {
     dispatch(fetchStatusSourceFail(error));
   });

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

@@ -599,6 +599,7 @@ export default function compose(state = initialState, action) {
     return state.withMutations(map => {
       map.set('id', action.status.get('id'));
       map.set('text', action.text);
+      map.set('content_type', action.content_type || 'text/plain');
       map.set('in_reply_to', action.status.get('in_reply_to_id'));
       map.set('privacy', action.status.get('visibility'));
       map.set('media_attachments', action.status.get('media_attachments'));