diff --git a/src/home/room_screen.rs b/src/home/room_screen.rs index cb6dc241..98ffa65d 100644 --- a/src/home/room_screen.rs +++ b/src/home/room_screen.rs @@ -963,15 +963,15 @@ impl Widget for Timeline { item_drawn_status, ) } - TimelineItemContent::RedactedMessage => populate_redacted_message_view( + TimelineItemContent::RedactedMessage => populate_small_state_event( cx, list, item_id, event_tl_item, - &tl_state.room_id, + &RedactedMessageEventMarker, item_drawn_status, ), - TimelineItemContent::MembershipChange(membership_change) => populate_membership_change_view( + TimelineItemContent::MembershipChange(membership_change) => populate_small_state_event( cx, list, item_id, @@ -979,7 +979,7 @@ impl Widget for Timeline { membership_change, item_drawn_status, ), - TimelineItemContent::ProfileChange(profile_change) => populate_profile_change_view( + TimelineItemContent::ProfileChange(profile_change) => populate_small_state_event( cx, list, item_id, @@ -987,7 +987,7 @@ impl Widget for Timeline { profile_change, item_drawn_status, ), - TimelineItemContent::OtherState(other) => populate_other_state_view( + TimelineItemContent::OtherState(other) => populate_small_state_event( cx, list, item_id, @@ -1222,284 +1222,305 @@ fn populate_message_view( - -/// Creates, populates, and adds a `SmallStateEvent` liveview widget to the given `PortalList` -/// with the given `item_id`. -/// -/// The content of the returned widget is populated with metadata about the redacted message -/// the corresponds to the given `EventTimelineItem`. -fn populate_redacted_message_view( - cx: &mut Cx, - list: &mut PortalList, - item_id: usize, - event_tl_item: &EventTimelineItem, - _room_id: &OwnedRoomId, - item_drawn_status: ItemDrawnStatus, -) -> (WidgetRef, ItemDrawnStatus) { - let mut new_drawn_status = item_drawn_status; - let (item, existed) = list.item_with_existed(cx, item_id, live_id!(SmallStateEvent)).unwrap(); - - // The content of a redacted message view depends on the profile, - // so we can only cache the content after the profile has been drawn and cached. - let skip_redrawing_profile = existed && item_drawn_status.profile_drawn; - let skip_redrawing_content = skip_redrawing_profile && item_drawn_status.content_drawn; - - if skip_redrawing_content { - return (item, new_drawn_status); - } - - // If the profile has been drawn, we can just quickly grab the original sender's display name - // instead of having to call `set_avatar_and_get_username()` again. - let original_sender_opt = if skip_redrawing_profile { - get_profile_display_name(event_tl_item) - } else { - None - }; - - let original_sender = original_sender_opt.unwrap_or_else(|| { - // As a fallback, call `set_avatar_and_get_username()` to get the display name - // (or user ID) of the original sender of the now-redacted message. - let (original_sender, profile_drawn) = set_avatar_and_get_username( - cx, - item.avatar(id!(avatar)), - event_tl_item, - ); - // Draw the timestamp as part of the profile. - set_timestamp(&item, id!(left_container.timestamp), event_tl_item.timestamp()); - new_drawn_status.profile_drawn = profile_drawn; - original_sender - }); +/// A trait for abstracting over the different types of timeline events +/// that can be displayed in a `SmallStateEvent` widget. +trait SmallStateEventContent { + /// Populates the *content* (not the profile) of the given `item` with data from + /// the given `event_tl_item` and `self` (the specific type of event content). + /// + /// ## Arguments + /// * `item`: a `SmallStateEvent` widget that has already been added to + /// the given `PortalList` at the given `item_id`. + /// This function may either modify that item or completely replace it + /// with a different widget if needed. + /// * `item_drawn_status`: the old (prior) drawn status of the item. + /// * `new_drawn_status`: the new drawn status of the item, which may have already + /// been updated to reflect the item's profile having been drawn right before this function. + /// + /// ## Return + /// Returns a tuple of the drawn `item` and its `new_drawn_status`. + fn populate_item_content( + &self, + cx: &mut Cx, + list: &mut PortalList, + item_id: usize, + item: WidgetRef, + event_tl_item: &EventTimelineItem, + username: String, + item_drawn_status: ItemDrawnStatus, + new_drawn_status: ItemDrawnStatus, + ) -> (WidgetRef, ItemDrawnStatus); +} - // Proceed to draw the content, now that we have the original sender's display name. - let redactor_and_reason = { - let mut rr = None; - if let Some(redacted_msg) = event_tl_item.latest_json() { - if let Ok(old) = redacted_msg.deserialize() { - if let AnySyncTimelineEvent::MessageLike(AnySyncMessageLikeEvent::RoomMessage(SyncMessageLikeEvent::Redacted(redaction))) = old { - rr = Some(( - redaction.unsigned.redacted_because.sender, - redaction.unsigned.redacted_because.content.reason, - )); +/// An empty marker struct used for populating redacted messages. +struct RedactedMessageEventMarker; + +impl SmallStateEventContent for RedactedMessageEventMarker { + fn populate_item_content( + &self, + _cx: &mut Cx, + _list: &mut PortalList, + _item_id: usize, + item: WidgetRef, + event_tl_item: &EventTimelineItem, + original_sender: String, + _item_drawn_status: ItemDrawnStatus, + mut new_drawn_status: ItemDrawnStatus, + ) -> (WidgetRef, ItemDrawnStatus) { + let redactor_and_reason = { + let mut rr = None; + if let Some(redacted_msg) = event_tl_item.latest_json() { + if let Ok(old) = redacted_msg.deserialize() { + if let AnySyncTimelineEvent::MessageLike( + AnySyncMessageLikeEvent::RoomMessage( + SyncMessageLikeEvent::Redacted(redaction) + ) + ) = old { + rr = Some(( + redaction.unsigned.redacted_because.sender, + redaction.unsigned.redacted_because.content.reason, + )); + } } } - } - rr - }; + rr + }; - let text = match redactor_and_reason { - Some((redactor, Some(reason))) => { - // TODO: get the redactor's display name if possible - format!("{} deleted {}'s message: {:?}.", redactor, original_sender, reason) - } - Some((redactor, None)) => { - if redactor == event_tl_item.sender() { - format!("{} deleted their own message.", original_sender) - } else { - format!("{} deleted {}'s message.", redactor, original_sender) + let text = match redactor_and_reason { + Some((redactor, Some(reason))) => { + // TODO: get the redactor's display name if possible + format!("{} deleted {}'s message: {:?}.", redactor, original_sender, reason) } - } - None => { - format!("{}'s message was deleted.", original_sender) - } - }; - - item.label(id!(content)).set_text(&text); - new_drawn_status.content_drawn = true; - (item, new_drawn_status) -} - - -/// Creates, populates, and adds a SmallStateEvent liveview widget to the given `PortalList` -/// with the given `item_id`. -/// -/// The content of the returned widget is populated with data from the -/// given room membership change and its parent `EventTimelineItem`. -fn populate_membership_change_view( - cx: &mut Cx, - list: &mut PortalList, - item_id: usize, - event_tl_item: &EventTimelineItem, - change: &RoomMembershipChange, - item_drawn_status: ItemDrawnStatus, -) -> (WidgetRef, ItemDrawnStatus) { - let mut new_drawn_status = item_drawn_status; - let (item, existed) = list.item_with_existed(cx, item_id, live_id!(SmallStateEvent)).unwrap(); - - // The content of a membership change view depends on the profile, - // so we can only cache the content after the profile has been drawn and cached. - let skip_redrawing_profile = existed && item_drawn_status.profile_drawn; - let skip_redrawing_content = skip_redrawing_profile && item_drawn_status.content_drawn; + Some((redactor, None)) => { + if redactor == event_tl_item.sender() { + format!("{} deleted their own message.", original_sender) + } else { + format!("{} deleted {}'s message.", redactor, original_sender) + } + } + None => { + format!("{}'s message was deleted.", original_sender) + } + }; - if skip_redrawing_content { - return (item, new_drawn_status); + item.label(id!(content)).set_text(&text); + new_drawn_status.content_drawn = true; + (item, new_drawn_status) } - - // If the profile has been drawn, we can just quickly grab the user's display name - // instead of having to call `set_avatar_and_get_username()` again. - let username_opt = if skip_redrawing_profile { - get_profile_display_name(event_tl_item) - } else { - None - }; - - let username = username_opt.unwrap_or_else(|| { - // As a fallback, call `set_avatar_and_get_username()` to get the user's display name. - let (username, profile_drawn) = set_avatar_and_get_username( - cx, - item.avatar(id!(avatar)), - event_tl_item, - ); - // Draw the timestamp as part of the profile. - set_timestamp(&item, id!(left_container.timestamp), event_tl_item.timestamp()); - new_drawn_status.profile_drawn = profile_drawn; - username - }); - - // Proceed to draw the content, now that we have the user's display name. - let change_user_id = change.user_id(); - let text = match change.change() { - None - | Some(MembershipChange::NotImplemented) - | Some(MembershipChange::None) => { - // Don't actually display anything for nonexistent/unimportant membership changes. - return ( - list.item(cx, item_id, live_id!(Empty)).unwrap(), - ItemDrawnStatus::new(), - ); - } - Some(MembershipChange::Error) => - format!("had a membership change error."), - Some(MembershipChange::Joined) => - format!("joined this room."), - Some(MembershipChange::Left) => - format!("left this room."), - Some(MembershipChange::Banned) => - format!("banned {} from this room.", change_user_id), - Some(MembershipChange::Unbanned) => - format!("unbanned {} from this room.", change_user_id), - Some(MembershipChange::Kicked) => - format!("kicked {} from this room.", change_user_id), - Some(MembershipChange::Invited) => - format!("invited {} to this room.", change_user_id), - Some(MembershipChange::KickedAndBanned) => - format!("kicked and banned {} from this room.", change_user_id), - Some(MembershipChange::InvitationAccepted) => - format!("accepted an invitation to this room."), - Some(MembershipChange::InvitationRejected) => - format!("rejected an invitation to this room."), - Some(MembershipChange::InvitationRevoked) => - format!("revoked {}'s invitation to this room.", change_user_id), - Some(MembershipChange::Knocked) => - format!("requested to join this room."), - Some(MembershipChange::KnockAccepted) => - format!("accepted {}'s request to join this room.", change_user_id), - Some(MembershipChange::KnockRetracted) => - format!("retracted their request to join this room."), - Some(MembershipChange::KnockDenied) => - format!("denied {}'s request to join this room.", change_user_id), - }; - - item.label(id!(content)).set_text(&format!("{username} {text}")); - new_drawn_status.content_drawn = true; - (item, new_drawn_status) } +impl SmallStateEventContent for timeline::OtherState { + fn populate_item_content( + &self, + cx: &mut Cx, + list: &mut PortalList, + item_id: usize, + item: WidgetRef, + _event_tl_item: &EventTimelineItem, + username: String, + _item_drawn_status: ItemDrawnStatus, + mut new_drawn_status: ItemDrawnStatus, + ) -> (WidgetRef, ItemDrawnStatus) { + let text = match self.content() { + AnyOtherFullStateEventContent::RoomAliases(FullStateEventContent::Original { content, .. }) => { + let mut s = format!("set this room's aliases to "); + let last_alias = content.aliases.len() - 1; + for (i, alias) in content.aliases.iter().enumerate() { + s.push_str(alias.as_str()); + if i != last_alias { + s.push_str(", "); + } + } + s.push_str("."); + Some(s) + } + AnyOtherFullStateEventContent::RoomAvatar(_) => { + Some(format!("set this room's avatar picture.")) + } + AnyOtherFullStateEventContent::RoomCanonicalAlias(FullStateEventContent::Original { content, .. }) => { + Some(format!("set the main address of this room to {}.", + content.alias.as_ref().map(|a| a.as_str()).unwrap_or("none") + )) + } + AnyOtherFullStateEventContent::RoomCreate(FullStateEventContent::Original { content, .. }) => { + Some(format!("created this room (v{}).", content.room_version.as_str())) + } + AnyOtherFullStateEventContent::RoomGuestAccess(FullStateEventContent::Original { content, .. }) => { + Some(match content.guest_access { + GuestAccess::CanJoin => format!("has allowed guests to join this room."), + GuestAccess::Forbidden | _ => format!("has forbidden guests from joining this room."), + }) + } + AnyOtherFullStateEventContent::RoomHistoryVisibility(FullStateEventContent::Original { content, .. }) => { + let visibility = match content.history_visibility { + HistoryVisibility::Invited => "invited users, since they were invited.", + HistoryVisibility::Joined => "joined users, since they joined.", + HistoryVisibility::Shared => "joined users, for all of time.", + HistoryVisibility::WorldReadable | _ => "anyone for all time.", + }; + Some(format!("set this room's history to be visible by {}.", visibility)) + } + AnyOtherFullStateEventContent::RoomJoinRules(FullStateEventContent::Original { content, .. }) => { + Some(match content.join_rule { + JoinRule::Public => format!("set this room to be joinable by anyone."), + JoinRule::Knock => format!("set this room to be joinable by invite only or by request."), + JoinRule::Private => format!("set this room to be private."), + JoinRule::Restricted(_) => format!("set this room to be joinable by invite only or with restrictions."), + JoinRule::KnockRestricted(_) => format!("set this room to be joinable by invite only or requestable with restrictions."), + JoinRule::Invite | _ => format!("set this room to be joinable by invite only."), + }) + } + AnyOtherFullStateEventContent::RoomName(FullStateEventContent::Original { content, .. }) => { + Some(format!("changed this room's name to {:?}.", content.name)) + } + AnyOtherFullStateEventContent::RoomPowerLevels(_) => { + None + } + AnyOtherFullStateEventContent::RoomTopic(FullStateEventContent::Original { content, .. }) => { + Some(format!("changed this room's topic to {:?}.", content.topic)) + } + AnyOtherFullStateEventContent::SpaceParent(_) + | AnyOtherFullStateEventContent::SpaceChild(_) => None, + _other => { + // log!("*** Unhandled: {:?}.", _other); + None + } + }; -/// Creates, populates, and adds a SmallStateEvent liveview widget to the given `PortalList` -/// with the given `item_id`. -/// -/// The content of the returned `SmallStateEvent` widget is populated with data from the -/// given member profile change and its parent `EventTimelineItem`. -fn populate_profile_change_view( - cx: &mut Cx, - list: &mut PortalList, - item_id: usize, - event_tl_item: &EventTimelineItem, - change: &MemberProfileChange, - item_drawn_status: ItemDrawnStatus, -) -> (WidgetRef, ItemDrawnStatus) { - let mut new_drawn_status = item_drawn_status; - let (item, existed) = list.item_with_existed(cx, item_id, live_id!(SmallStateEvent)).unwrap(); - - // The content of a profile change view depends on the profile, - // so we can only cache the content after the profile has been drawn and cached. - let skip_redrawing_profile = existed && item_drawn_status.profile_drawn; - let skip_redrawing_content = skip_redrawing_profile && item_drawn_status.content_drawn; - - if skip_redrawing_content { - return (item, new_drawn_status); + let item = if let Some(text) = text { + item.label(id!(content)).set_text(&format!("{username} {text}")); + new_drawn_status.content_drawn = true; + item + } else { + let item = list.item(cx, item_id, live_id!(Empty)).unwrap(); + new_drawn_status = ItemDrawnStatus::new(); + item + }; + (item, new_drawn_status) } +} - // If the profile has been drawn, we can just quickly grab the user's display name - // instead of having to call `set_avatar_and_get_username()` again. - let username_opt = if skip_redrawing_profile { - get_profile_display_name(event_tl_item) - } else { - None - }; - - let username = username_opt.unwrap_or_else(|| { - // As a fallback, call `set_avatar_and_get_username()` to get the user's display name. - let (username, profile_drawn) = set_avatar_and_get_username( - cx, - item.avatar(id!(avatar)), - event_tl_item, - ); - // Draw the timestamp as part of the profile. - set_timestamp(&item, id!(left_container.timestamp), event_tl_item.timestamp()); - new_drawn_status.profile_drawn = profile_drawn; - username - }); - - // Proceed to draw the content, now that we have the user's display name. - let name_text = if let Some(name_change) = change.displayname_change() { - let old = name_change.old.as_deref().unwrap_or(&username); - if let Some(new) = name_change.new.as_ref() { - format!("{old} changed their display name to {new:?}") +impl SmallStateEventContent for MemberProfileChange { + fn populate_item_content( + &self, + _cx: &mut Cx, + _list: &mut PortalList, + _item_id: usize, + item: WidgetRef, + _event_tl_item: &EventTimelineItem, + username: String, + _item_drawn_status: ItemDrawnStatus, + mut new_drawn_status: ItemDrawnStatus, + ) -> (WidgetRef, ItemDrawnStatus) { + let name_text = if let Some(name_change) = self.displayname_change() { + let old = name_change.old.as_deref().unwrap_or(&username); + if let Some(new) = name_change.new.as_ref() { + format!("{old} changed their display name to {new:?}") + } else { + format!("{old} removed their display name") + } } else { - format!("{old} removed their display name") - } - } else { - String::new() - }; + String::new() + }; - let avatar_text = if let Some(_avatar_change) = change.avatar_url_change() { - if name_text.is_empty() { - format!("{} changed their profile picture", username) + let avatar_text = if let Some(_avatar_change) = self.avatar_url_change() { + if name_text.is_empty() { + format!("{} changed their profile picture", username) + } else { + format!(" and changed their profile picture") + } } else { - format!(" and changed their profile picture") - } - } else { - String::new() - }; + String::new() + }; - item.label(id!(content)).set_text(&format!("{}{}.", name_text, avatar_text)); - new_drawn_status.content_drawn = true; - (item, new_drawn_status) + item.label(id!(content)).set_text(&format!("{}{}.", name_text, avatar_text)); + new_drawn_status.content_drawn = true; + (item, new_drawn_status) + } } +impl SmallStateEventContent for RoomMembershipChange { + fn populate_item_content( + &self, + cx: &mut Cx, + list: &mut PortalList, + item_id: usize, + item: WidgetRef, + _event_tl_item: &EventTimelineItem, + username: String, + _item_drawn_status: ItemDrawnStatus, + mut new_drawn_status: ItemDrawnStatus, + ) -> (WidgetRef, ItemDrawnStatus) { + let change_user_id = self.user_id(); + let text = match self.change() { + None + | Some(MembershipChange::NotImplemented) + | Some(MembershipChange::None) => { + // Don't actually display anything for nonexistent/unimportant membership changes. + return ( + list.item(cx, item_id, live_id!(Empty)).unwrap(), + ItemDrawnStatus::new(), + ); + } + Some(MembershipChange::Error) => + format!("had a membership change error."), + Some(MembershipChange::Joined) => + format!("joined this room."), + Some(MembershipChange::Left) => + format!("left this room."), + Some(MembershipChange::Banned) => + format!("banned {} from this room.", change_user_id), + Some(MembershipChange::Unbanned) => + format!("unbanned {} from this room.", change_user_id), + Some(MembershipChange::Kicked) => + format!("kicked {} from this room.", change_user_id), + Some(MembershipChange::Invited) => + format!("invited {} to this room.", change_user_id), + Some(MembershipChange::KickedAndBanned) => + format!("kicked and banned {} from this room.", change_user_id), + Some(MembershipChange::InvitationAccepted) => + format!("accepted an invitation to this room."), + Some(MembershipChange::InvitationRejected) => + format!("rejected an invitation to this room."), + Some(MembershipChange::InvitationRevoked) => + format!("revoked {}'s invitation to this room.", change_user_id), + Some(MembershipChange::Knocked) => + format!("requested to join this room."), + Some(MembershipChange::KnockAccepted) => + format!("accepted {}'s request to join this room.", change_user_id), + Some(MembershipChange::KnockRetracted) => + format!("retracted their request to join this room."), + Some(MembershipChange::KnockDenied) => + format!("denied {}'s request to join this room.", change_user_id), + }; + + item.label(id!(content)).set_text(&format!("{username} {text}")); + new_drawn_status.content_drawn = true; + (item, new_drawn_status) + } +} /// Creates, populates, and adds a SmallStateEvent liveview widget to the given `PortalList` /// with the given `item_id`. /// -/// The content of the returned `SmallStateEvent` widget is populated with data from the given `message` -/// and its parent `EventTimelineItem`. -fn populate_other_state_view( +/// The content of the returned widget is populated with data from the +/// given room membership change and its parent `EventTimelineItem`. +fn populate_small_state_event( cx: &mut Cx, list: &mut PortalList, item_id: usize, event_tl_item: &EventTimelineItem, - other_state: &timeline::OtherState, + event_content: &impl SmallStateEventContent, item_drawn_status: ItemDrawnStatus, ) -> (WidgetRef, ItemDrawnStatus) { let mut new_drawn_status = item_drawn_status; let (item, existed) = list.item_with_existed(cx, item_id, live_id!(SmallStateEvent)).unwrap(); - // The content of an "other state" view depends on the profile, - // so we can only cache the content after the profile has been drawn and cached. + // The content of a small state event view may depend on the profile info, + // so we can only mark the content as drawn after the profile has been fully drawn and cached. let skip_redrawing_profile = existed && item_drawn_status.profile_drawn; let skip_redrawing_content = skip_redrawing_profile && item_drawn_status.content_drawn; @@ -1528,87 +1549,20 @@ fn populate_other_state_view( username }); - // Proceed to draw the content, now that we have the user's display name. - let text = match other_state.content() { - AnyOtherFullStateEventContent::RoomAliases(FullStateEventContent::Original { content, .. }) => { - let mut s = format!("set this room's aliases to "); - let last_alias = content.aliases.len() - 1; - for (i, alias) in content.aliases.iter().enumerate() { - s.push_str(alias.as_str()); - if i != last_alias { - s.push_str(", "); - } - } - s.push_str("."); - Some(s) - } - AnyOtherFullStateEventContent::RoomAvatar(_) => { - Some(format!("set this room's avatar picture.")) - } - AnyOtherFullStateEventContent::RoomCanonicalAlias(FullStateEventContent::Original { content, .. }) => { - Some(format!("set the main address of this room to {}.", - content.alias.as_ref().map(|a| a.as_str()).unwrap_or("none") - )) - } - AnyOtherFullStateEventContent::RoomCreate(FullStateEventContent::Original { content, .. }) => { - Some(format!("created this room (v{}).", content.room_version.as_str())) - } - AnyOtherFullStateEventContent::RoomGuestAccess(FullStateEventContent::Original { content, .. }) => { - Some(match content.guest_access { - GuestAccess::CanJoin => format!("has allowed guests to join this room."), - GuestAccess::Forbidden | _ => format!("has forbidden guests from joining this room."), - }) - } - AnyOtherFullStateEventContent::RoomHistoryVisibility(FullStateEventContent::Original { content, .. }) => { - let visibility = match content.history_visibility { - HistoryVisibility::Invited => "invited users, since they were invited.", - HistoryVisibility::Joined => "joined users, since they joined.", - HistoryVisibility::Shared => "joined users, for all of time.", - HistoryVisibility::WorldReadable | _ => "anyone for all time.", - }; - Some(format!("set this room's history to be visible by {}.", visibility)) - } - AnyOtherFullStateEventContent::RoomJoinRules(FullStateEventContent::Original { content, .. }) => { - Some(match content.join_rule { - JoinRule::Public => format!("set this room to be joinable by anyone."), - JoinRule::Knock => format!("set this room to be joinable by invite only or by request."), - JoinRule::Private => format!("set this room to be private."), - JoinRule::Restricted(_) => format!("set this room to be joinable by invite only or with restrictions."), - JoinRule::KnockRestricted(_) => format!("set this room to be joinable by invite only or requestable with restrictions."), - JoinRule::Invite | _ => format!("set this room to be joinable by invite only."), - }) - } - AnyOtherFullStateEventContent::RoomName(FullStateEventContent::Original { content, .. }) => { - Some(format!("changed this room's name to {:?}.", content.name)) - } - AnyOtherFullStateEventContent::RoomPowerLevels(_) => { - None - } - AnyOtherFullStateEventContent::RoomTopic(FullStateEventContent::Original { content, .. }) => { - Some(format!("changed this room's topic to {:?}.", content.topic)) - } - AnyOtherFullStateEventContent::SpaceParent(_) - | AnyOtherFullStateEventContent::SpaceChild(_) => None, - _other => { - // log!("*** Unhandled: {:?}.", _other); - None - } - }; - - let item = if let Some(text) = text { - item.label(id!(content)).set_text(&format!("{username} {text}")); - new_drawn_status.content_drawn = true; - item - } else { - let item = list.item(cx, item_id, live_id!(Empty)).unwrap(); - new_drawn_status = ItemDrawnStatus::new(); - item - }; - (item, new_drawn_status) + // Proceed to draw the actual event content. + event_content.populate_item_content( + cx, + list, + item_id, + item, + event_tl_item, + username, + item_drawn_status, + new_drawn_status, + ) } - /// Sets the text of the `Label` at the given `item`'s live ID path /// to a typical 12-hour AM/PM timestamp format. fn set_timestamp(