From be9357c67619550e12a3c959c33ebaae5b031617 Mon Sep 17 00:00:00 2001
From: Bastien Nocera <hadess@hadess.net>
Date: Wed, 17 Jun 2020 17:44:12 +0200
Subject: daemon: Add LowPowerMode toggle

Closes: #102
---
 dbus/org.freedesktop.UPower.xml | 43 +++++++++++++++++++++++++++++++++++++++++
 src/up-daemon.c                 | 15 ++++++++++++++
 2 files changed, 58 insertions(+)

diff --git a/dbus/org.freedesktop.UPower.xml b/dbus/org.freedesktop.UPower.xml
index cdeb2b8..2f7baf2 100644
--- a/dbus/org.freedesktop.UPower.xml
+++ b/dbus/org.freedesktop.UPower.xml
@@ -132,6 +132,32 @@ method return sender=:1.386 -> dest=:1.451 reply_serial=2
       </doc:doc>
     </method>
 
+    <method name="SetLowPowerMode">
+      <annotation name="org.freedesktop.DBus.GLib.Async" value=""/>
+      <arg name="low_power_mode" direction="in" type="b">
+        <doc:doc><doc:summary>Whether to enable the <doc:ref type="property" to="Source:LowPowerMode">low-power mode</doc:ref>.</doc:summary></doc:doc>
+      </arg>
+
+      <doc:doc>
+        <doc:description>
+          <doc:para>
+            When the system's power supply is critical (critically low batteries or UPS),
+            the system will take this action. Possible values are:
+            <doc:list>
+              <doc:item>
+                <doc:term>HybridSleep</doc:term>
+              </doc:item>
+              <doc:item>
+                <doc:term>Hibernate</doc:term>
+              </doc:item>
+              <doc:item>
+                <doc:term>PowerOff</doc:term>
+              </doc:item>
+            </doc:list>
+          </doc:para>
+        </doc:description>
+      </doc:doc>
+    </method>
     <!-- ************************************************************ -->
 
     <signal name="DeviceAdded">
@@ -199,6 +225,23 @@ method return sender=:1.386 -> dest=:1.451 reply_serial=2
       </doc:doc>
     </property>
 
+    <property name="LowPowerMode" type="b" access="read">
+      <doc:doc>
+        <doc:description>
+          <doc:para>
+            Whether the system should be in low-power mode. This property does
+            not actually control anything of its own, but applications and system
+            components are expected to try and reduce their power consumption when
+            the property is set to true.
+          </doc:para>
+          <doc:para>
+            Setting the property is possible for active seats, using the SetLowPowerMode()
+            method.
+          </doc:para>
+        </doc:description>
+      </doc:doc>
+    </property>
+
   </interface>
 
 </node>
diff --git a/src/up-daemon.c b/src/up-daemon.c
index 5263c34..c4ae939 100644
--- a/src/up-daemon.c
+++ b/src/up-daemon.c
@@ -431,6 +431,19 @@ up_daemon_get_display_device (UpExportedDaemon *skeleton,
 	return TRUE;
 }
 
+/**
+ * up_daemon_set_low_power_mode:
+ **/
+static gboolean
+up_daemon_set_low_power_mode (UpExportedDaemon *skeleton,
+			      GDBusMethodInvocation *invocation,
+			      UpDaemon *daemon)
+{
+	//FIXME verify that this gets blocked for users that aren't at the console
+	up_exported_daemon_complete_set_low_power_mode (skeleton, invocation);
+	return TRUE;
+}
+
 /**
  * up_daemon_get_critical_action:
  **/
@@ -1108,6 +1121,8 @@ up_daemon_init (UpDaemon *daemon)
 			  G_CALLBACK (up_daemon_get_critical_action), daemon);
 	g_signal_connect (daemon, "handle-get-display-device",
 			  G_CALLBACK (up_daemon_get_display_device), daemon);
+	g_signal_connect (daemon, "handle-set-low-power-mode",
+			  G_CALLBACK (up_daemon_set_low_power_mode), daemon);
 }
 
 static const GDBusErrorEntry up_daemon_error_entries[] = {
-- 
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