diff --git a/src/euph.rs b/src/euph.rs
index 30d39ee..23d3f04 100644
--- a/src/euph.rs
+++ b/src/euph.rs
@@ -1,8 +1,10 @@
 pub mod api;
 mod conn;
+mod message;
 mod room;
 mod util;
 
 pub use conn::{Joined, Joining, Status};
+pub use message::Message;
 pub use room::Room;
 pub use util::{hue, nick_color, nick_style};
diff --git a/src/euph/message.rs b/src/euph/message.rs
new file mode 100644
index 0000000..b383d1d
--- /dev/null
+++ b/src/euph/message.rs
@@ -0,0 +1,62 @@
+use crossterm::style::{ContentStyle, Stylize};
+use time::OffsetDateTime;
+use toss::styled::Styled;
+
+use crate::store::Msg;
+use crate::ui::ChatMsg;
+
+use super::api::{Snowflake, Time};
+use super::util;
+
+#[derive(Debug, Clone)]
+pub struct Message {
+    pub id: Snowflake,
+    pub parent: Option<Snowflake>,
+    pub time: Time,
+    pub nick: String,
+    pub content: String,
+}
+
+fn styled_nick(nick: &str) -> Styled {
+    Styled::new_plain("[")
+        .then(nick, util::nick_style(nick))
+        .then_plain("]")
+}
+
+fn styled_content(content: &str) -> Styled {
+    Styled::new_plain(content.trim())
+}
+
+impl Msg for Message {
+    type Id = Snowflake;
+
+    fn id(&self) -> Self::Id {
+        self.id
+    }
+
+    fn parent(&self) -> Option<Self::Id> {
+        self.parent
+    }
+
+    fn last_possible_id() -> Self::Id {
+        Snowflake::MAX
+    }
+}
+
+impl ChatMsg for Message {
+    fn time(&self) -> OffsetDateTime {
+        self.time.0
+    }
+
+    fn styled(&self) -> (Styled, Styled) {
+        Self::pseudo(&self.nick, &self.content)
+    }
+
+    fn edit(nick: &str, content: &str) -> (Styled, Styled) {
+        (styled_nick(nick), styled_content(content))
+    }
+
+    fn pseudo(nick: &str, content: &str) -> (Styled, Styled) {
+        (styled_nick(nick), styled_content(content))
+    }
+}
diff --git a/src/export.rs b/src/export.rs
index 8dfb8b6..3351450 100644
--- a/src/export.rs
+++ b/src/export.rs
@@ -8,9 +8,10 @@ use time::format_description::FormatItem;
 use time::macros::format_description;
 use unicode_width::UnicodeWidthStr;
 
+use crate::euph;
 use crate::euph::api::Snowflake;
 use crate::store::{MsgStore, Tree};
-use crate::vault::{EuphMsg, Vault};
+use crate::vault::Vault;
 
 const TIME_FORMAT: &[FormatItem<'_>] =
     format_description!("[year]-[month]-[day] [hour]:[minute]:[second]");
@@ -43,7 +44,7 @@ pub async fn export(vault: &Vault, room: String, file: &Path) -> anyhow::Result<
 
 fn write_tree(
     file: &mut BufWriter<File>,
-    tree: &Tree<EuphMsg>,
+    tree: &Tree<euph::Message>,
     id: Snowflake,
     indent: usize,
 ) -> anyhow::Result<()> {
@@ -64,7 +65,11 @@ fn write_tree(
     Ok(())
 }
 
-fn write_msg(file: &mut BufWriter<File>, indent_string: &str, msg: &EuphMsg) -> anyhow::Result<()> {
+fn write_msg(
+    file: &mut BufWriter<File>,
+    indent_string: &str,
+    msg: &euph::Message,
+) -> anyhow::Result<()> {
     let nick = &msg.nick;
     let nick_empty = " ".repeat(nick.width());
 
diff --git a/src/logger.rs b/src/logger.rs
index 0aca9a4..bb68df7 100644
--- a/src/logger.rs
+++ b/src/logger.rs
@@ -10,6 +10,7 @@ use tokio::sync::mpsc;
 use toss::styled::Styled;
 
 use crate::store::{Msg, MsgStore, Path, Tree};
+use crate::ui::ChatMsg;
 
 #[derive(Debug, Clone)]
 pub struct LogMsg {
@@ -30,28 +31,35 @@ impl Msg for LogMsg {
         None
     }
 
+    fn last_possible_id() -> Self::Id {
+        Self::Id::MAX
+    }
+}
+
+impl ChatMsg for LogMsg {
     fn time(&self) -> OffsetDateTime {
         self.time
     }
 
-    fn nick(&self) -> Styled {
-        let style = match self.level {
+    fn styled(&self) -> (Styled, Styled) {
+        let nick_style = match self.level {
             Level::Error => ContentStyle::default().bold().red(),
             Level::Warn => ContentStyle::default().bold().yellow(),
             Level::Info => ContentStyle::default().bold().green(),
             Level::Debug => ContentStyle::default().bold().blue(),
             Level::Trace => ContentStyle::default().bold().magenta(),
         };
-        let text = format!("{}", self.level);
-        Styled::new(text, style)
+        let nick = Styled::new(format!("{}", self.level), nick_style);
+        let content = Styled::new_plain(&self.content);
+        (nick, content)
     }
 
-    fn content(&self) -> Styled {
-        Styled::new_plain(&self.content)
+    fn edit(nick: &str, content: &str) -> (Styled, Styled) {
+        panic!("log is not editable")
     }
 
-    fn last_possible_id() -> Self::Id {
-        Self::Id::MAX
+    fn pseudo(nick: &str, content: &str) -> (Styled, Styled) {
+        panic!("log is not editable")
     }
 }
 
diff --git a/src/store.rs b/src/store.rs
index ceca76a..e31c526 100644
--- a/src/store.rs
+++ b/src/store.rs
@@ -4,18 +4,12 @@ use std::hash::Hash;
 use std::vec;
 
 use async_trait::async_trait;
-use time::OffsetDateTime;
-use toss::styled::Styled;
 
 pub trait Msg {
     type Id: Clone + Debug + Hash + Eq + Ord;
     fn id(&self) -> Self::Id;
     fn parent(&self) -> Option<Self::Id>;
 
-    fn time(&self) -> OffsetDateTime;
-    fn nick(&self) -> Styled;
-    fn content(&self) -> Styled;
-
     fn last_possible_id() -> Self::Id;
 }
 
diff --git a/src/ui.rs b/src/ui.rs
index fef6b3f..36e4413 100644
--- a/src/ui.rs
+++ b/src/ui.rs
@@ -18,6 +18,7 @@ use toss::terminal::Terminal;
 use crate::logger::{LogMsg, Logger};
 use crate::vault::Vault;
 
+pub use self::chat::ChatMsg;
 use self::chat::ChatState;
 use self::rooms::Rooms;
 use self::widgets::BoxedWidget;
diff --git a/src/ui/chat.rs b/src/ui/chat.rs
index 73acb30..9a5ecb3 100644
--- a/src/ui/chat.rs
+++ b/src/ui/chat.rs
@@ -6,7 +6,9 @@ use std::sync::Arc;
 use async_trait::async_trait;
 use crossterm::event::KeyEvent;
 use parking_lot::FairMutex;
+use time::OffsetDateTime;
 use toss::frame::{Frame, Size};
+use toss::styled::Styled;
 use toss::terminal::Terminal;
 
 use crate::store::{Msg, MsgStore};
@@ -15,6 +17,17 @@ use self::tree::{TreeView, TreeViewState};
 
 use super::widgets::Widget;
 
+///////////
+// Trait //
+///////////
+
+pub trait ChatMsg {
+    fn time(&self) -> OffsetDateTime;
+    fn styled(&self) -> (Styled, Styled);
+    fn edit(nick: &str, content: &str) -> (Styled, Styled);
+    fn pseudo(nick: &str, content: &str) -> (Styled, Styled);
+}
+
 ///////////
 // State //
 ///////////
@@ -87,7 +100,7 @@ pub enum Chat<M: Msg, S: MsgStore<M>> {
 #[async_trait]
 impl<M, S> Widget for Chat<M, S>
 where
-    M: Msg,
+    M: Msg + ChatMsg,
     M::Id: Send + Sync,
     S: MsgStore<M> + Send + Sync,
 {
diff --git a/src/ui/chat/tree.rs b/src/ui/chat/tree.rs
index b36cc85..b2916d5 100644
--- a/src/ui/chat/tree.rs
+++ b/src/ui/chat/tree.rs
@@ -18,6 +18,8 @@ use crate::ui::widgets::Widget;
 
 use self::cursor::Cursor;
 
+use super::ChatMsg;
+
 ///////////
 // State //
 ///////////
@@ -115,7 +117,7 @@ pub struct TreeView<M: Msg, S: MsgStore<M>>(Arc<Mutex<InnerTreeViewState<M, S>>>
 #[async_trait]
 impl<M, S> Widget for TreeView<M, S>
 where
-    M: Msg,
+    M: Msg + ChatMsg,
     M::Id: Send + Sync,
     S: MsgStore<M> + Send + Sync,
 {
diff --git a/src/ui/chat/tree/layout.rs b/src/ui/chat/tree/layout.rs
index efd3f8a..3ed353d 100644
--- a/src/ui/chat/tree/layout.rs
+++ b/src/ui/chat/tree/layout.rs
@@ -4,11 +4,12 @@ use crate::store::{Msg, MsgStore, Path, Tree};
 use crate::ui::chat::blocks::Block;
 use crate::ui::widgets::empty::Empty;
 use crate::ui::widgets::text::Text;
+use crate::ui::ChatMsg;
 
 use super::tree_blocks::{BlockId, Root, TreeBlocks};
 use super::{widgets, Cursor, InnerTreeViewState};
 
-impl<M: Msg, S: MsgStore<M>> InnerTreeViewState<M, S> {
+impl<M: Msg + ChatMsg, S: MsgStore<M>> InnerTreeViewState<M, S> {
     async fn cursor_path(&self, cursor: &Cursor<M::Id>) -> Path<M::Id> {
         match cursor {
             Cursor::Msg(id) => self.store.path(id).await,
diff --git a/src/ui/chat/tree/widgets.rs b/src/ui/chat/tree/widgets.rs
index ce08dbe..b509798 100644
--- a/src/ui/chat/tree/widgets.rs
+++ b/src/ui/chat/tree/widgets.rs
@@ -5,6 +5,7 @@ mod time;
 
 use crossterm::style::{ContentStyle, Stylize};
 
+use super::super::ChatMsg;
 use crate::store::Msg;
 use crate::ui::widgets::join::{HJoin, Segment};
 use crate::ui::widgets::padding::Padding;
@@ -19,7 +20,8 @@ pub fn style_placeholder() -> ContentStyle {
     ContentStyle::default().dark_grey()
 }
 
-pub fn msg<M: Msg>(highlighted: bool, indent: usize, msg: &M) -> BoxedWidget {
+pub fn msg<M: Msg + ChatMsg>(highlighted: bool, indent: usize, msg: &M) -> BoxedWidget {
+    let (nick, content) = msg.styled();
     HJoin::new(vec![
         Segment::new(
             Padding::new(time::widget(Some(msg.time()), highlighted))
@@ -27,10 +29,10 @@ pub fn msg<M: Msg>(highlighted: bool, indent: usize, msg: &M) -> BoxedWidget {
                 .right(1),
         ),
         Segment::new(Indent::new(indent, highlighted)),
-        Segment::new(Padding::new(Text::new(msg.nick())).right(1)),
+        Segment::new(Padding::new(Text::new(nick)).right(1)),
         // TODO Minimum content width
         // TODO Minimizing and maximizing messages
-        Segment::new(Text::new(msg.content()).wrap(true)).priority(1),
+        Segment::new(Text::new(content).wrap(true)).priority(1),
     ])
     .into()
 }
diff --git a/src/ui/room.rs b/src/ui/room.rs
index 0a3d519..889df0b 100644
--- a/src/ui/room.rs
+++ b/src/ui/room.rs
@@ -10,7 +10,7 @@ use toss::terminal::Terminal;
 
 use crate::euph::api::{SessionType, SessionView};
 use crate::euph::{self, Joined, Status};
-use crate::vault::{EuphMsg, EuphVault};
+use crate::vault::EuphVault;
 
 use super::chat::ChatState;
 use super::widgets::background::Background;
@@ -37,7 +37,7 @@ pub struct EuphRoom {
     state: State,
 
     room: Option<euph::Room>,
-    chat: ChatState<EuphMsg, EuphVault>,
+    chat: ChatState<euph::Message, EuphVault>,
     nick_list: ListState<String>,
 }
 
diff --git a/src/vault.rs b/src/vault.rs
index a97e6c9..037be83 100644
--- a/src/vault.rs
+++ b/src/vault.rs
@@ -9,7 +9,7 @@ use rusqlite::Connection;
 use tokio::sync::{mpsc, oneshot};
 
 use self::euph::EuphRequest;
-pub use self::euph::{EuphMsg, EuphVault};
+pub use self::euph::EuphVault;
 
 enum Request {
     Close(oneshot::Sender<()>),
diff --git a/src/vault/euph.rs b/src/vault/euph.rs
index 3a84cf9..c5b479b 100644
--- a/src/vault/euph.rs
+++ b/src/vault/euph.rs
@@ -7,11 +7,11 @@ use rusqlite::types::{FromSql, FromSqlError, ToSqlOutput, Value, ValueRef};
 use rusqlite::{named_params, params, Connection, OptionalExtension, ToSql, Transaction};
 use time::OffsetDateTime;
 use tokio::sync::oneshot;
-use toss::styled::Styled;
 
 use crate::euph;
 use crate::euph::api::{Message, Snowflake, Time};
 use crate::store::{Msg, MsgStore, Path, Tree};
+use crate::ui::ChatMsg;
 
 use super::{Request, Vault};
 
@@ -43,43 +43,6 @@ impl FromSql for Time {
     }
 }
 
-#[derive(Debug, Clone)]
-pub struct EuphMsg {
-    pub id: Snowflake,
-    pub parent: Option<Snowflake>,
-    pub time: Time,
-    pub nick: String,
-    pub content: String,
-}
-
-impl Msg for EuphMsg {
-    type Id = Snowflake;
-
-    fn id(&self) -> Self::Id {
-        self.id
-    }
-
-    fn parent(&self) -> Option<Self::Id> {
-        self.parent
-    }
-
-    fn time(&self) -> OffsetDateTime {
-        self.time.0
-    }
-
-    fn nick(&self) -> Styled {
-        (&self.nick, euph::nick_style(&self.nick)).into()
-    }
-
-    fn content(&self) -> Styled {
-        self.content.trim().into()
-    }
-
-    fn last_possible_id() -> Self::Id {
-        Snowflake::MAX
-    }
-}
-
 impl From<EuphRequest> for Request {
     fn from(r: EuphRequest) -> Self {
         Self::Euph(r)
@@ -168,7 +131,7 @@ impl EuphVault {
 }
 
 #[async_trait]
-impl MsgStore<EuphMsg> for EuphVault {
+impl MsgStore<euph::Message> for EuphVault {
     async fn path(&self, id: &Snowflake) -> Path<Snowflake> {
         // TODO vault::Error
         let (tx, rx) = oneshot::channel();
@@ -181,7 +144,7 @@ impl MsgStore<EuphMsg> for EuphVault {
         rx.await.unwrap()
     }
 
-    async fn tree(&self, tree_id: &Snowflake) -> Tree<EuphMsg> {
+    async fn tree(&self, tree_id: &Snowflake) -> Tree<euph::Message> {
         // TODO vault::Error
         let (tx, rx) = oneshot::channel();
         let request = EuphRequest::GetTree {
@@ -290,7 +253,7 @@ pub(super) enum EuphRequest {
     GetTree {
         room: String,
         root: Snowflake,
-        result: oneshot::Sender<Tree<EuphMsg>>,
+        result: oneshot::Sender<Tree<euph::Message>>,
     },
     GetPrevTreeId {
         room: String,
@@ -681,7 +644,7 @@ impl EuphRequest {
         conn: &Connection,
         room: String,
         root: Snowflake,
-        result: oneshot::Sender<Tree<EuphMsg>>,
+        result: oneshot::Sender<Tree<euph::Message>>,
     ) -> rusqlite::Result<()> {
         let msgs = conn
             .prepare(
@@ -703,7 +666,7 @@ impl EuphRequest {
                 ",
             )?
             .query_map(params![room, root], |row| {
-                Ok(EuphMsg {
+                Ok(euph::Message {
                     id: row.get(0)?,
                     parent: row.get(1)?,
                     time: row.get(2)?,