From 3d3a9b5b084ebecc06c2b67b220f0d2a8fecd839 Mon Sep 17 00:00:00 2001
From: Dmitry Shachnev <mitya57@ubuntu.com>
Date: Tue, 5 Apr 2016 23:28:26 +0200
Subject: Move Unity detection into a separate function, and add caching

---
 src/service.vala | 30 +++++++++++++++++++++---------
 1 file changed, 21 insertions(+), 9 deletions(-)

diff --git a/src/service.vala b/src/service.vala
index e07e9fd..33008a1 100644
--- a/src/service.vala
+++ b/src/service.vala
@@ -206,6 +206,7 @@ public class IndicatorSound.Service: Object {
 	private VolumeWarning _volume_warning;
 	private IndicatorSound.InfoNotification _info_notification = new IndicatorSound.InfoNotification();
 	private AccountsServiceAccess _accounts_service_access;
+	bool? is_unity = null;
 
 	const double volume_step_percentage = 0.06;
 
@@ -224,9 +225,26 @@ public class IndicatorSound.Service: Object {
 		}
 	}
 
+	private bool desktop_is_unity() {
+		if (is_unity != null) {
+			return is_unity;
+		}
+
+		is_unity = false;
+		unowned string desktop = Environment.get_variable ("XDG_CURRENT_DESKTOP");
+
+		foreach (var name in desktop.split(":")) {
+			if (name == "Unity") {
+				is_unity = true;
+				break;
+			}
+		}
+
+		return is_unity;
+	}
+
 	void activate_desktop_settings (SimpleAction action, Variant? param) {
 		unowned string env = Environment.get_variable ("DESKTOP_SESSION");
-		unowned string desktop = Environment.get_variable ("XDG_CURRENT_DESKTOP");
 		string cmd;
 
 		if (Environment.get_variable ("MIR_SOCKET") != null)
@@ -239,16 +257,10 @@ public class IndicatorSound.Service: Object {
 			cmd = "pavucontrol";
 		else if (env == "mate")
 			cmd = "mate-volume-control";
+		else if (desktop_is_unity() && Environment.find_program_in_path ("unity-control-center") != null)
+			cmd = "unity-control-center sound";
 		else
-		{
 			cmd = "gnome-control-center sound";
-			foreach (var name in desktop.split(":")) {
-				if (name == "Unity" && Environment.find_program_in_path ("unity-control-center") != null) {
-					cmd = "unity-control-center sound";
-					break;
-				}
-			}
-		}
 
 		try {
 			Process.spawn_command_line_async (cmd);
-- 
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