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events: Add AnyMessageEventContent::relation

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Jonas Platte 2021-06-20 19:24:52 +02:00
parent 61671f4440
commit d73ab8add9
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1 changed files with 41 additions and 0 deletions
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41
crates/ruma-events/src/enums.rs
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@ -320,3 +320,44 @@ impl From<AnyRedactedSyncRoomEvent> for AnySyncRoomEvent {
}
}
}
impl AnyMessageEventContent {
/// Get a copy of the event's `m.relates_to` field, if any.
///
/// This is a helper function intended for encryption. There should not be a reason to access
/// `m.relates_to` without first destructuring an `AnyMessageEventContent` otherwise.
pub fn relation(&self) -> Option<crate::room::encrypted::Relation> {
#[cfg(feature = "unstable-pre-spec")]
use crate::key::verification::{
accept::AcceptEventContent, cancel::CancelEventContent, done::DoneEventContent,
key::KeyEventContent, mac::MacEventContent, ready::ReadyEventContent,
start::StartEventContent,
};
match self {
#[cfg(feature = "unstable-pre-spec")]
#[rustfmt::skip]
AnyMessageEventContent::KeyVerificationReady(ReadyEventContent { relates_to, .. })
| AnyMessageEventContent::KeyVerificationStart(StartEventContent { relates_to, .. })
| AnyMessageEventContent::KeyVerificationCancel(CancelEventContent { relates_to, .. })
| AnyMessageEventContent::KeyVerificationAccept(AcceptEventContent { relates_to, .. })
| AnyMessageEventContent::KeyVerificationKey(KeyEventContent { relates_to, .. })
| AnyMessageEventContent::KeyVerificationMac(MacEventContent { relates_to, .. })
| AnyMessageEventContent::KeyVerificationDone(DoneEventContent { relates_to, .. }) => {
Some(relates_to.clone().into())
},
#[cfg(feature = "unstable-pre-spec")]
AnyMessageEventContent::Reaction(ev) => Some(ev.relates_to.clone().into()),
AnyMessageEventContent::RoomEncrypted(ev) => ev.relates_to.clone(),
AnyMessageEventContent::RoomMessage(ev) => ev.relates_to.clone().map(Into::into),
AnyMessageEventContent::CallAnswer(_)
| AnyMessageEventContent::CallInvite(_)
| AnyMessageEventContent::CallHangup(_)
| AnyMessageEventContent::CallCandidates(_)
| AnyMessageEventContent::RoomMessageFeedback(_)
| AnyMessageEventContent::RoomRedaction(_)
| AnyMessageEventContent::Sticker(_)
| AnyMessageEventContent::_Custom(_) => None,
}
}
}