Add clipboard disable-primary setting

niri-config/src/lib.rs

@@ -53,6 +53,8 @@ pub struct Config {
     ]
     pub screenshot_path: Option<String>,
     #[knuffel(child, default)]
+    pub clipboard: Clipboard,
+    #[knuffel(child, default)]
     pub hotkey_overlay: HotkeyOverlay,
     #[knuffel(child, default)]
     pub animations: Animations,
@@ -785,6 +787,12 @@ pub struct HotkeyOverlay {
     pub skip_at_startup: bool,
 }
 
+#[derive(knuffel::Decode, Debug, Default, Clone, Copy, PartialEq, Eq)]
+pub struct Clipboard {
+    #[knuffel(child)]
+    pub disable_primary: bool,
+}
+
 #[derive(knuffel::Decode, Debug, Clone, PartialEq)]
 pub struct Animations {
     #[knuffel(child)]
@@ -3432,6 +3440,10 @@ mod tests {
 
             screenshot-path "~/Screenshots/screenshot.png"
 
+            clipboard {
+                disable-primary
+            }
+
             hotkey-overlay {
                 skip-at-startup
             }
@@ -3686,6 +3698,9 @@ mod tests {
                     hide_after_inactive_ms: Some(3000),
                 },
                 screenshot_path: Some(String::from("~/Screenshots/screenshot.png")),
+                clipboard: Clipboard {
+                    disable_primary: true,
+                },
                 hotkey_overlay: HotkeyOverlay {
                     skip_at_startup: true,
                 },

src/dbus/mutter_service_channel.rs

@@ -28,6 +28,7 @@ impl ServiceChannel {
             compositor_state: Default::default(),
             // Would be nice to thread config here but for now it's fine.
             can_view_decoration_globals: false,
+            primary_selection_disabled: false,
             restricted: false,
             // FIXME: maybe you can get the PID from D-Bus somehow?
             credentials_unknown: true,

src/handlers/mod.rs

@@ -475,6 +475,7 @@ impl SecurityContextHandler for State {
                 let data = Arc::new(ClientState {
                     compositor_state: Default::default(),
                     can_view_decoration_globals: config.prefer_no_csd,
+                    primary_selection_disabled: config.clipboard.disable_primary,
                     restricted: true,
                     credentials_unknown: false,
                 });

src/niri.rs

@@ -1810,7 +1810,13 @@ impl Niri {
         let idle_notifier_state = IdleNotifierState::new(&display_handle, event_loop.clone());
         let idle_inhibit_manager_state = IdleInhibitManagerState::new::<State>(&display_handle);
         let data_device_state = DataDeviceState::new::<State>(&display_handle);
-        let primary_selection_state = PrimarySelectionState::new::<State>(&display_handle);
+        let primary_selection_state =
+            PrimarySelectionState::new_with_filter::<State, _>(&display_handle, |client| {
+                !client
+                    .get_data::<ClientState>()
+                    .unwrap()
+                    .primary_selection_disabled
+            });
         let data_control_state = DataControlState::new::<State, _>(
             &display_handle,
             Some(&primary_selection_state),
@@ -1930,6 +1936,7 @@ impl Niri {
                 let data = Arc::new(ClientState {
                     compositor_state: Default::default(),
                     can_view_decoration_globals: config.prefer_no_csd,
+                    primary_selection_disabled: config.clipboard.disable_primary,
                     restricted: false,
                     credentials_unknown: false,
                 });
@@ -5167,6 +5174,7 @@ impl Niri {
 pub struct ClientState {
     pub compositor_state: CompositorClientState,
     pub can_view_decoration_globals: bool,
+    pub primary_selection_disabled: bool,
     /// Whether this client is denied from the restricted protocols such as security-context.
     pub restricted: bool,
     /// We cannot retrieve this client's socket credentials.