tdehw lib: power off USB devices after ejecting them when udisks/udisks2 are used.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

tdecore/tdehw/disksHelper.cpp

@@ -64,8 +64,41 @@ TQStringVariantMap udisksEjectDrive(TDEStorageDevice *sdevice) {
 				return result;
 			}
 			else {
-				result["result"] = true;
-				return result;
+				// Eject was successful. Check if the media can be powered off and do so in case
+				TQT_DBusProxy driveInformation("org.freedesktop.UDisks", blockDeviceString,
+						"org.freedesktop.DBus.Properties", dbusConn);
+				params.clear();
+				params << TQT_DBusData::fromString("org.freedesktop.UDisks.Drive") << TQT_DBusData::fromString("DriveCanDetach");
+				TQT_DBusMessage reply = driveInformation.sendWithReply("Get", params, &error);
+				if (error.isValid()) {
+					// Error!
+					result["errStr"] = error.name() + ": " + error.message();
+					return result;
+				}
+
+				if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1) {
+					bool canPowerOff = reply[0].toVariant().value.toBool();
+					if (!canPowerOff) {
+						// This drive does not support power off. Just return since the eject operation has finished.
+						result["result"] = true;
+						return result;
+					}
+
+					// Power off the drive!
+					params.clear();
+					TQT_DBusDataMap<TQString> options(TQT_DBusData::Variant);
+					params << TQT_DBusData::fromStringKeyMap(options);
+					TQT_DBusMessage reply = driveControl.sendWithReply("DriveDetach", params, &error);
+					if (error.isValid()) {
+						// Error!
+						result["errStr"] = error.name() + ": " + error.message();
+						return result;
+					}
+					else {
+						result["result"] = true;
+						return result;
+					}
+				}
 			}
 		}
 	}
@@ -193,7 +226,7 @@ TQStringVariantMap udisks2EjectDrive(TDEStorageDevice *sdevice) {
 				TQT_DBusProxy driveInformation("org.freedesktop.UDisks2", driveObjectPath,
 								"org.freedesktop.DBus.Properties", dbusConn);
 				// can eject?
-				TQValueList<TQT_DBusData> params;
+				params.clear();
 				params << TQT_DBusData::fromString("org.freedesktop.UDisks2.Drive") << TQT_DBusData::fromString("Ejectable");
 				TQT_DBusMessage reply = driveInformation.sendWithReply("Get", params, &error);
 				if (error.isValid()) {
@@ -211,7 +244,7 @@ TQStringVariantMap udisks2EjectDrive(TDEStorageDevice *sdevice) {
 
 					// Eject the drive!
 					TQT_DBusProxy driveControl("org.freedesktop.UDisks2", driveObjectPath, "org.freedesktop.UDisks2.Drive", dbusConn);
-					TQValueList<TQT_DBusData> params;
+					params.clear();
 					TQT_DBusDataMap<TQString> options(TQT_DBusData::Variant);
 					params << TQT_DBusData::fromStringKeyMap(options);
 					TQT_DBusMessage reply = driveControl.sendWithReply("Eject", params, &error);
@@ -221,8 +254,39 @@ TQStringVariantMap udisks2EjectDrive(TDEStorageDevice *sdevice) {
 						return result;
 					}
 					else {
-						result["result"] = true;
-						return result;
+						// Eject was successful. Check if the media can be powered off and do so in case
+						params.clear();
+						params << TQT_DBusData::fromString("org.freedesktop.UDisks2.Drive") << TQT_DBusData::fromString("CanPowerOff");
+						TQT_DBusMessage reply = driveInformation.sendWithReply("Get", params, &error);
+						if (error.isValid()) {
+							// Error!
+							result["errStr"] = error.name() + ": " + error.message();
+							return result;
+						}
+
+						if (reply.type() == TQT_DBusMessage::ReplyMessage && reply.count() == 1) {
+							bool canPowerOff = reply[0].toVariant().value.toBool();
+							if (!canPowerOff) {
+								// This drive does not support power off. Just return since the eject operation has finished.
+								result["result"] = true;
+								return result;
+							}
+
+							// Power off the drive!
+							params.clear();
+							TQT_DBusDataMap<TQString> options(TQT_DBusData::Variant);
+							params << TQT_DBusData::fromStringKeyMap(options);
+							TQT_DBusMessage reply = driveControl.sendWithReply("PowerOff", params, &error);
+							if (error.isValid()) {
+								// Error!
+								result["errStr"] = error.name() + ": " + error.message();
+								return result;
+							}
+							else {
+								result["result"] = true;
+								return result;
+							}
+						}
 					}
 				}
 			}