[evolution] Use GNetworkMonitor to drive EShell:network-available.

[Matthew Barnes <mbarnes src gnome org>]

commit 4eec255877f060bf907704488397459f7612be86
Author: Matthew Barnes <mbarnes redhat com>
Date:   Sat Mar 31 11:03:52 2012 -0400

    Use GNetworkMonitor to drive EShell:network-available.

 shell/e-shell.c |   14 ++++++++++++--
 1 files changed, 12 insertions(+), 2 deletions(-)
---
diff --git a/shell/e-shell.c b/shell/e-shell.c
index dd0f4db..bc25284 100644
--- a/shell/e-shell.c
+++ b/shell/e-shell.c
@@ -766,12 +766,23 @@ shell_finalize (GObject *object)
 static void
 shell_constructed (GObject *object)
 {
+	GNetworkMonitor *monitor;
+
 	/* The first EShell instance is the default. */
 	if (default_shell == NULL) {
 		default_shell = object;
 		g_object_add_weak_pointer (object, &default_shell);
 	}
 
+	/* Synchronize network monitoring. */
+
+	monitor = g_network_monitor_get_default ();
+
+	g_object_bind_property (
+		monitor, "network-available",
+		object, "network-available",
+		G_BINDING_SYNC_CREATE);
+
 	/* Chain up to parent's constructed() method. */
 	G_OBJECT_CLASS (e_shell_parent_class)->constructed (object);
 }
@@ -972,8 +983,7 @@ e_shell_class_init (EShellClass *class)
 			"Network Available",
 			"Whether the network is available",
 			TRUE,
-			G_PARAM_READWRITE |
-			G_PARAM_CONSTRUCT));
+			G_PARAM_READWRITE));
 
 	/**
 	 * EShell:online