1 files changed, 80 insertions, 0 deletions
diff --git a/lib/sway/upower.vala b/lib/sway/upower.vala
new file mode 100644
index 0000000..ea5946a
--- /dev/null
+++ b/lib/sway/upower.vala
@@ -0,0 +1,80 @@
+/**
+ * Client for the UPower [[https://upower.freedesktop.org/docs/UPower.html|dbus interface]].
+ */
+public class AstalBattery.UPower : Object {
+    private IUPower proxy;
+    private HashTable<string, Device> _devices =
+        new HashTable<string, Device>(str_hash, str_equal);
+
+    /** List of UPower devices. */
+    public List<weak Device> devices {
+        owned get { return _devices.get_values(); }
+    }
+
+    /** Emitted when a new device is connected. */
+    public signal void device_added(Device device);
+
+    /** Emitted a new device is disconnected. */
+    public signal void device_removed(Device device);
+
+    /** A composite device that represents the battery status. */
+    public Device display_device { owned get { return Device.get_default(); }}
+
+    public string daemon_version { owned get { return proxy.daemon_version; } }
+
+    /** Indicates whether the system is running on battery power. */
+    public bool on_battery { get { return proxy.on_battery; } }
+
+    /** Indicates if the laptop lid is closed where the display cannot be seen. */
+    public bool lid_is_closed { get { return proxy.lid_is_closed; } }
+
+    /** Indicates if the system has a lid device. */
+    public bool lid_is_present { get { return proxy.lid_is_closed; } }
+
+    /**
+     * When the system's power supply is critical (critically low batteries or UPS),
+     * the system will take this action.
+     */
+    public string critical_action {
+        owned get {
+            try {
+                return proxy.get_critical_action();
+            } catch (Error error) {
+                critical(error.message);
+                return "";
+            }
+        }
+    }
+
+    construct {
+        try {
+            proxy = Bus.get_proxy_sync(
+                BusType.SYSTEM,
+                "org.freedesktop.UPower",
+                "/org/freedesktop/UPower"
+            );
+
+            foreach (var path in proxy.enumerate_devices())
+                _devices.set(path, new Device(path));
+
+            proxy.device_added.connect((path) => {
+                try {
+                    var d = new Device(path);
+                    _devices.set(path, d);
+                    device_added(d);
+                    notify_property("devices");
+                } catch (Error err) {
+                    critical(err.message);
+                }
+            });
+
+            proxy.device_removed.connect((path) => {
+                device_removed(_devices.get(path));
+                _devices.remove(path);
+                notify_property("devices");
+            });
+        } catch (Error error) {
+            critical(error.message);
+        }
+    }
+}