extract logind integration into LockService singleton in services/

shell/services/LockService.qml

@@ -0,0 +1,88 @@
+pragma Singleton
+
+import QtQuick
+import Quickshell.Io
+import "." as S
+
+QtObject {
+    id: root
+
+    readonly property bool enabled: S.Modules.lock.enable
+    property string sessionPath: ""
+
+    // Lock/unlock requests from logind
+    signal lockRequested
+    signal unlockRequested
+
+    // Set logind LockedHint
+    function setLockedHint(locked) {
+        if (!sessionPath)
+            return;
+        _lockedHint._locked = locked;
+        _lockedHint.running = true;
+    }
+
+    // Check if session is currently locked (crash recovery)
+    function checkLockState() {
+        if (sessionPath)
+            _lockStateCheck.running = true;
+    }
+
+    signal sessionLocked // fired if LockedHint is true on startup
+
+    // Resolve the actual logind session object path at startup
+    property Process _sessionResolver: Process {
+        command: ["busctl", "call", "--system", "org.freedesktop.login1", "/org/freedesktop/login1", "org.freedesktop.login1.Manager", "GetSession", "s", "auto"]
+        running: root.enabled
+
+        stdout: SplitParser {
+            onRead: data => {
+                const match = data.match(/"([^"]+)"/);
+                if (match)
+                    root.sessionPath = match[1];
+            }
+        }
+
+        onExited: {
+            if (root.sessionPath) {
+                _logindMonitor.running = true;
+                root.checkLockState();
+            }
+        }
+    }
+
+    // Listen for logind Lock/Unlock signals via gdbus monitor.
+    // TODO: replace with native D-Bus integration when nova-stats becomes a quickshell plugin
+    property Process _logindMonitor: Process {
+        command: ["gdbus", "monitor", "--system", "--dest", "org.freedesktop.login1", "--object-path", root.sessionPath]
+        running: false
+
+        stdout: SplitParser {
+            onRead: data => {
+                if (data.indexOf(".Lock ()") !== -1)
+                    root.lockRequested();
+                else if (data.indexOf(".Unlock ()") !== -1)
+                    root.unlockRequested();
+            }
+        }
+    }
+
+    // Check if session is already locked on startup (crash recovery)
+    property Process _lockStateCheck: Process {
+        running: false
+        command: ["busctl", "get-property", "--system", "org.freedesktop.login1", root.sessionPath, "org.freedesktop.login1.Session", "LockedHint"]
+
+        stdout: SplitParser {
+            onRead: data => {
+                if (data.indexOf("true") !== -1)
+                    root.sessionLocked();
+            }
+        }
+    }
+
+    // Set logind LockedHint
+    property Process _lockedHint: Process {
+        property bool _locked: false
+        command: ["busctl", "call", "--system", "org.freedesktop.login1", root.sessionPath || "/org/freedesktop/login1/session/auto", "org.freedesktop.login1.Session", "SetLockedHint", "b", _locked ? "true" : "false"]
+    }
+}

shell/services/qmldir

@@ -6,3 +6,4 @@ singleton NiriIpc 1.0 NiriIpc.qml
 singleton PowerProfileService 1.0 PowerProfileService.qml
 singleton NotifService 1.0 NotifService.qml
 NotifItem 1.0 NotifItem.qml
+singleton LockService 1.0 LockService.qml