room-history: Set room menu as primary menu when the sidebar is hidden

i.e. when the window is narrow.

src/session/view/content/mod.rs

@@ -16,7 +16,7 @@ use crate::session::model::{
 };
 
 mod imp {
-    use std::cell::RefCell;
+    use std::cell::{Cell, RefCell};
 
     use glib::{object::WeakRef, signal::SignalHandlerId, subclass::InitializingObject};
     use once_cell::sync::Lazy;
@@ -27,6 +27,8 @@ mod imp {
     #[template(resource = "/org/gnome/Fractal/ui/session/view/content/mod.ui")]
     pub struct Content {
         pub session: WeakRef<Session>,
+        /// Whether this is the only visible view, i.e. there is no sidebar.
+        pub only_view: Cell<bool>,
         pub item_binding: RefCell<Option<glib::Binding>>,
         pub item: RefCell<Option<glib::Object>>,
         pub signal_handler: RefCell<Option<SignalHandlerId>>,
@@ -67,6 +69,7 @@ mod imp {
             static PROPERTIES: Lazy<Vec<glib::ParamSpec>> = Lazy::new(|| {
                 vec![
                     glib::ParamSpecObject::builder::<Session>("session").build(),
+                    glib::ParamSpecBoolean::builder("only-view").build(),
                     glib::ParamSpecObject::builder::<glib::Object>("item")
                         .explicit_notify()
                         .build(),
@@ -81,6 +84,7 @@ mod imp {
 
             match pspec.name() {
                 "session" => obj.set_session(value.get().unwrap()),
+                "only-view" => self.only_view.set(value.get().unwrap()),
                 "item" => obj.set_item(value.get().unwrap()),
                 _ => unimplemented!(),
             }
@@ -91,6 +95,7 @@ mod imp {
 
             match pspec.name() {
                 "session" => obj.session().to_value(),
+                "only-view" => self.only_view.get().to_value(),
                 "item" => obj.item().to_value(),
                 _ => unimplemented!(),
             }

src/session/view/content/mod.ui

@@ -28,7 +28,9 @@
           </object>
         </child>
         <child>
-          <object class="ContentRoomHistory" id="room_history"/>
+          <object class="ContentRoomHistory" id="room_history">
+            <property name="only-view" bind-source="Content" bind-property="only-view" bind-flags="sync-create"/>
+          </object>
         </child>
         <child>
           <object class="ContentInvite" id="invite"/>

src/session/view/content/room_history/mod.rs

@@ -58,6 +58,8 @@ mod imp {
     #[template(resource = "/org/gnome/Fractal/ui/session/view/content/room_history/mod.ui")]
     pub struct RoomHistory {
         pub room: RefCell<Option<Room>>,
+        /// Whether this is the only view visible, i.e. there is no sidebar.
+        pub only_view: Cell<bool>,
         pub room_members: RefCell<Option<MemberList>>,
         pub room_handlers: RefCell<Vec<SignalHandlerId>>,
         pub timeline_handlers: RefCell<Vec<SignalHandlerId>>,
@@ -197,6 +199,7 @@ mod imp {
                     glib::ParamSpecObject::builder::<Room>("room")
                         .explicit_notify()
                         .build(),
+                    glib::ParamSpecBoolean::builder("only-view").build(),
                     glib::ParamSpecBoolean::builder("empty")
                         .explicit_notify()
                         .build(),
@@ -214,6 +217,7 @@ mod imp {
 
             match pspec.name() {
                 "room" => obj.set_room(value.get().unwrap()),
+                "only-view" => self.only_view.set(value.get().unwrap()),
                 "sticky" => obj.set_sticky(value.get().unwrap()),
                 _ => unimplemented!(),
             }
@@ -224,6 +228,7 @@ mod imp {
 
             match pspec.name() {
                 "room" => obj.room().to_value(),
+                "only-view" => self.only_view.get().to_value(),
                 "empty" => obj.is_empty().to_value(),
                 "sticky" => obj.sticky().to_value(),
                 _ => unimplemented!(),

src/session/view/content/room_history/mod.ui

@@ -53,6 +53,7 @@
               <object class="GtkMenuButton" id="room_menu">
                 <property name="icon-name">view-more-symbolic</property>
                 <property name="menu-model">room-menu-model</property>
+                <property name="primary" bind-source="ContentRoomHistory" bind-property="only-view" bind-flags="sync-create"/>
                 <property name="tooltip-text" translatable="yes">Room Menu</property>
                 <accessibility>
                   <property name="label" translatable="yes">Room Menu</property>

src/session/view/session_view.ui

@@ -36,6 +36,11 @@
                 <property name="content">
                   <object class="Content" id="content">
                     <property name="session" bind-source="SessionView" bind-property="session" bind-flags="sync-create"/>
+                    <binding name="only-view">
+                      <lookup type="Window" name="compact">
+                        <lookup name="root">SessionView</lookup>
+                      </lookup>
+                    </binding>
                   </object>
                 </property>
               </object>