fix(gui): allow partial selection of message text

crates/gui/Cargo.toml

@@ -34,6 +34,7 @@ chrono = { workspace = true, features = ["std", "clock"] }
 
 # Match GPUI Kit's published GPUI family so entities share one implementation.
 gpui = { package = "gpui-pre", version = "0.3.4" }
+gpui-base = { git = "https://github.com/longbridge/gpui-kit.git" }
 gpui-component = { git = "https://github.com/longbridge/gpui-kit.git" }
 gpui-kit-assets = { git = "https://github.com/longbridge/gpui-kit.git" }
 

crates/gui/src/app/body.rs

@@ -61,6 +61,9 @@ impl Render for Body {
                     }
                     AppState::Syncing => render_syncing_view(cx).into_any_element(),
                     AppState::Connected | AppState::Offline if app.showing_settings(cx) => {
+                        if gpui_base::TextSelection::has_selection(window, cx) {
+                            super::clear_window_message_selection(window, cx);
+                        }
                         render_settings_view(app, window, cx).into_any_element()
                     }
                     AppState::Connected | AppState::Offline => {

crates/gui/src/app/chats.rs

@@ -262,7 +262,7 @@ impl WhatsAppApp {
         // A selection that no longer names a chat is a selection of nothing:
         // the conversation pane resolves it every frame and would draw the
         // empty state with no way back on a phone.
-        self.forget_missing_selection();
+        self.forget_missing_selection(cx);
         // The merge above took the store's word for every row, and a merge
         // assembled before a view was written does not carry it.
         self.restore_watched_status(watched);

crates/gui/src/app/events.rs

@@ -231,7 +231,7 @@ impl WhatsAppApp {
                 cx.notify();
             }
             UiEvent::LoggedOut(message) => {
-                self.leave_connected_view(cx);
+                self.leave_connected_view(None, cx);
                 self.app_state = AppState::LoggedOut { message };
                 cx.notify();
             }
@@ -318,6 +318,13 @@ impl WhatsAppApp {
                 self.handle_chat_presence(chat_jid, sender_jid, sender_name, composing, cx);
             }
             UiEvent::AccountUpdated { name, jid, lid } => {
+                if (self.account_jid != jid || self.account_lid != lid)
+                    && let Some(window) = self.modal_window
+                {
+                    let _ = window.update(cx, |_, window, cx| {
+                        super::clear_window_message_selection(window, cx);
+                    });
+                }
                 if self.account_name != name || self.account_jid != jid || self.account_lid != lid {
                     self.account_name = name;
                     self.account_jid = jid;

crates/gui/src/app/messages.rs

@@ -108,6 +108,9 @@ pub struct BubbleIds {
     pub group: SharedString,
     /// The bubble itself.
     pub bubble: SharedString,
+    /// Shared selection identity, built with the row cache rather than on each
+    /// bubble repaint.
+    pub selection_key: Arc<str>,
     /// The three controls in the action bar beside it, which is built on
     /// every frame whether or not the pointer is over the row: it is
     /// `invisible()` until a hover reveals it, not absent.
@@ -125,6 +128,7 @@ impl BubbleIds {
             row: format!("row-{id}").into(),
             group: format!("bubble-{id}").into(),
             bubble: format!("msg-{id}").into(),
+            selection_key: Arc::from(id.as_str()),
             react: format!("react-{id}").into(),
             reply: format!("reply-{id}").into(),
             copy: format!("copy-{id}").into(),
@@ -279,6 +283,16 @@ mod tests {
         msg
     }
 
+    #[test]
+    fn bubble_clones_share_the_precomputed_selection_identity() {
+        let message = message("peer", false, at(13, 9));
+        let ids = BubbleIds::of(&message);
+        let cloned_ids = ids.clone();
+
+        assert_eq!(ids.selection_key.as_ref(), message.id.as_str());
+        assert!(Arc::ptr_eq(&ids.selection_key, &cloned_ids.selection_key));
+    }
+
     fn kinds(items: &[TimelineItem]) -> Vec<&'static str> {
         items
             .iter()