added move window to monitor by id

niri-config/src/lib.rs

@@ -1576,6 +1576,11 @@ pub enum Action {
     MoveWindowToMonitorPrevious,
     MoveWindowToMonitorNext,
     MoveWindowToMonitor(#[knuffel(argument)] String),
+    #[knuffel(skip)]
+    MoveWindowToMonitorById {
+        id: u64,
+        output: String,
+    },
     MoveColumnToMonitorLeft,
     MoveColumnToMonitorRight,
     MoveColumnToMonitorDown,
@@ -1780,7 +1785,13 @@ impl From<niri_ipc::Action> for Action {
             niri_ipc::Action::MoveWindowToMonitorUp {} => Self::MoveWindowToMonitorUp,
             niri_ipc::Action::MoveWindowToMonitorPrevious {} => Self::MoveWindowToMonitorPrevious,
             niri_ipc::Action::MoveWindowToMonitorNext {} => Self::MoveWindowToMonitorNext,
-            niri_ipc::Action::MoveWindowToMonitor { output } => Self::MoveWindowToMonitor(output),
+            niri_ipc::Action::MoveWindowToMonitor { id: None, output } => {
+                Self::MoveWindowToMonitor(output)
+            }
+            niri_ipc::Action::MoveWindowToMonitor {
+                id: Some(id),
+                output,
+            } => Self::MoveWindowToMonitorById { id, output },
             niri_ipc::Action::MoveColumnToMonitorLeft {} => Self::MoveColumnToMonitorLeft,
             niri_ipc::Action::MoveColumnToMonitorRight {} => Self::MoveColumnToMonitorRight,
             niri_ipc::Action::MoveColumnToMonitorDown {} => Self::MoveColumnToMonitorDown,

niri-ipc/src/lib.rs

@@ -475,8 +475,18 @@ pub enum Action {
     MoveWindowToMonitorPrevious {},
     /// Move the focused window to the next monitor.
     MoveWindowToMonitorNext {},
-    /// Move the focused window to a specific monitor.
+    /// Move a window to a specific monitor.
+    #[cfg_attr(
+        feature = "clap",
+        clap(about = "Move the focused window to a specific monitor")
+    )]
     MoveWindowToMonitor {
+        /// Id of the window to move.
+        ///
+        /// If `None`, uses the focused window.
+        #[cfg_attr(feature = "clap", arg(long))]
+        id: Option<u64>,
+
         /// The target output name.
         #[cfg_attr(feature = "clap", arg())]
         output: String,

src/input/mod.rs

@@ -1458,6 +1458,32 @@ impl State {
                     }
                 }
             }
+            Action::MoveWindowToMonitorById { id, output } => {
+                if let Some(output) = self.niri.output_by_name_match(&output).cloned() {
+                    let window = self.niri.layout.windows().find(|(_, m)| m.id().get() == id);
+                    let window = window.map(|(_, m)| m.window.clone());
+
+                    if let Some(window) = window {
+                        let target_was_active = self
+                            .niri
+                            .layout
+                            .active_output()
+                            .is_some_and(|active| output == *active);
+
+                        self.niri
+                            .layout
+                            .move_to_output(Some(&window), &output, None);
+
+                        // If the active output changed (window was moved and focused).
+                        #[allow(clippy::collapsible_if)]
+                        if !target_was_active && self.niri.layout.active_output() == Some(&output) {
+                            if !self.maybe_warp_cursor_to_focus_centered() {
+                                self.move_cursor_to_output(&output);
+                            }
+                        }
+                    }
+                }
+            }
             Action::MoveColumnToMonitorLeft => {
                 if let Some(output) = self.niri.output_left() {
                     self.niri.layout.move_column_to_output(&output);