From 0386c87d0176c3d539f6cac6f5d52ba1adf9d761 Mon Sep 17 00:00:00 2001
From: Lars Uebernickel <lars.uebernickel@canonical.com>
Date: Wed, 27 Mar 2013 14:32:06 -0400
Subject: VolumeControl: turn "ready" into a property

And bind it to the "enabled" properties of the volume and mute actions.
---
 src/volume-control.vala | 25 +++++++++++--------------
 1 file changed, 11 insertions(+), 14 deletions(-)

(limited to 'src/volume-control.vala')

diff --git a/src/volume-control.vala b/src/volume-control.vala
index 8c88c92..5ce5a05 100644
--- a/src/volume-control.vala
+++ b/src/volume-control.vala
@@ -31,9 +31,11 @@ public class VolumeControl : Object
 	private bool   _mute = true;
 	private double _volume = 0.0;
 
-	public signal void ready ();
 	public signal void volume_changed (double v);
 
+	/** true when connected to the pulse server */
+	public bool ready { get; set; }
+
 	public VolumeControl ()
 	{
 		if (loop == null)
@@ -47,7 +49,7 @@ public class VolumeControl : Object
 
 		context = new PulseAudio.Context (loop.get_api(), null, props);
 
-		context.set_state_callback (notify_cb);
+		context.set_state_callback (context_state_callback);
 
 		if (context.connect(null, Context.Flags.NOFAIL, null) < 0)
 		{
@@ -95,25 +97,23 @@ public class VolumeControl : Object
 		context.get_server_info (server_info_cb_for_props);
 	}
 
-	private void notify_cb (Context c)
+	private void context_state_callback (Context c)
 	{
 		if (c.get_state () == Context.State.READY)
 		{
 			c.subscribe (PulseAudio.Context.SubscriptionMask.SINK);
 			c.set_subscribe_callback (context_events_cb);
 			get_properties ();
-			ready ();
+			this.ready = true;
 		}
+		else
+			this.ready = false;
 	}
 
 	/* Mute operations */
 	public void set_mute (bool mute)
 	{
-		if (context.get_state () != Context.State.READY)
-		{
-			warning ("Could not mute: PulseAudio server connection is not ready.");
-			return;
-		}
+		return_if_fail (context.get_state () == Context.State.READY);
 
 		context.get_sink_info_list ((context, sink, eol) => {
 			if (sink != null)
@@ -175,11 +175,8 @@ public class VolumeControl : Object
 
 	public void set_volume (double volume)
 	{
-		if (context.get_state () != Context.State.READY)
-		{
-			warning ("Could not change volume: PulseAudio server connection is not ready.");
-			return;
-		}
+		return_if_fail (context.get_state () == Context.State.READY);
+
 		_volume = volume;
 
 		context.get_server_info (server_info_cb_for_set_volume);
-- 
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