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Show updated relation reply from edited message - v2 (#6817)

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Part of https://github.com/vector-im/element-web/issues/10391

When `m.relates_to` -> `m.in_reply_to` is provided in `m.new_content`
for an edited message, use the updated reply.

ex.

```json
{
  "type": "m.room.message",
  "content": {
    "body": " * foo bar",
    "msgtype": "m.text",
    "m.new_content": {
      "body": "foo bar",
      "msgtype": "m.text",
      "m.relates_to": {
        "m.in_reply_to": {
          "event_id": "$qkjmFBTEc0VvfVyzq1CJuh1QZi_xDIgNEFjZ4Pq34og"
        }
      }
    },
    "m.relates_to": {
      "rel_type": "m.replace",
      "event_id": "$lX9MRe9ZTFOOvnU8PRVbvr1wqGtYvNQ1rSot-iUTN5k"
    }
  }
}
```
This commit is contained in:
Eric Eastwood 2021-09-17 15:18:52 -05:00 • committed by GitHub
parent 05971e0492
commit 9c3439a1aa
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2 changed files with 216 additions and 1 deletions
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8
src/components/views/elements/ReplyThread.tsx
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@ -88,7 +88,13 @@ export default class ReplyThread extends React.Component<IProps, IState> {
// could be used here for replies as well... However, the helper
// currently assumes the relation has a `rel_type`, which older replies
// do not, so this block is left as-is for now.
const mRelatesTo = ev.getWireContent()['m.relates_to'];
//
// We're prefer ev.getContent() over ev.getWireContent() to make sure
// we grab the latest edit with potentially new relations. But we also
// can't just rely on ev.getContent() by itself because historically we
// still show the reply from the original message even though the edit
// event does not include the relation reply.
const mRelatesTo = ev.getContent()['m.relates_to'] || ev.getWireContent()['m.relates_to'];
if (mRelatesTo && mRelatesTo['m.in_reply_to']) {
const mInReplyTo = mRelatesTo['m.in_reply_to'];
if (mInReplyTo && mInReplyTo['event_id']) return mInReplyTo['event_id'];