From 51175189c6d7313a3b84019e39496f957c4e6164 Mon Sep 17 00:00:00 2001
From: Stefano Karapetsas <stefano@karapetsas.com>
Date: Sun, 11 Dec 2011 12:55:19 +0100
Subject: moved from Mate-Extra

---
 src/egg-unique.c | 151 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 151 insertions(+)
 create mode 100644 src/egg-unique.c

(limited to 'src/egg-unique.c')

diff --git a/src/egg-unique.c b/src/egg-unique.c
new file mode 100644
index 0000000..41a5182
--- /dev/null
+++ b/src/egg-unique.c
@@ -0,0 +1,151 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2008 Richard Hughes <richard@hughsie.com>
+ *
+ * Licensed under the GNU General Public License Version 2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+
+#include <string.h>
+#include <glib.h>
+#include <unique/unique.h>
+
+#include "egg-unique.h"
+#include "egg-debug.h"
+
+static void     egg_unique_finalize   (GObject        *object);
+
+#define EGG_UNIQUE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), EGG_UNIQUE_TYPE, EggUniquePrivate))
+
+struct EggUniquePrivate
+{
+	UniqueApp		*uniqueapp;
+};
+
+enum {
+	ACTIVATED,
+	LAST_SIGNAL
+};
+
+static guint signals [LAST_SIGNAL] = { 0 };
+
+G_DEFINE_TYPE (EggUnique, egg_unique, G_TYPE_OBJECT)
+
+/**
+ * egg_unique_message_cb:
+ **/
+static void
+egg_unique_message_cb (UniqueApp *app, UniqueCommand command, UniqueMessageData *message_data, guint time_s, EggUnique *egg_unique)
+{
+	g_return_if_fail (EGG_IS_UNIQUE (egg_unique));
+	if (command == UNIQUE_ACTIVATE)
+		g_signal_emit (egg_unique, signals [ACTIVATED], 0);
+}
+
+/**
+ * egg_unique_assign:
+ * @egg_unique: This class instance
+ * @service: The service name
+ * Return value: %FALSE if we should exit as another instance is running
+ **/
+gboolean
+egg_unique_assign (EggUnique *egg_unique, const gchar *service)
+{
+	g_return_val_if_fail (EGG_IS_UNIQUE (egg_unique), FALSE);
+	g_return_val_if_fail (service != NULL, FALSE);
+
+	if (egg_unique->priv->uniqueapp != NULL) {
+		g_warning ("already assigned!");
+		return FALSE;
+	}
+
+	/* check to see if the user has another instance open */
+	egg_unique->priv->uniqueapp = unique_app_new (service, NULL);
+	if (unique_app_is_running (egg_unique->priv->uniqueapp)) {
+		egg_debug ("You have another instance running. This program will now close");
+		unique_app_send_message (egg_unique->priv->uniqueapp, UNIQUE_ACTIVATE, NULL);
+		return FALSE;
+	}
+
+	/* Listen for messages from another instances */
+	g_signal_connect (G_OBJECT (egg_unique->priv->uniqueapp), "message-received",
+			  G_CALLBACK (egg_unique_message_cb), egg_unique);
+	return TRUE;
+}
+
+/**
+ * egg_unique_class_init:
+ * @egg_unique: This class instance
+ **/
+static void
+egg_unique_class_init (EggUniqueClass *klass)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (klass);
+	object_class->finalize = egg_unique_finalize;
+	g_type_class_add_private (klass, sizeof (EggUniquePrivate));
+
+	signals [ACTIVATED] =
+		g_signal_new ("activated",
+			      G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST,
+			      G_STRUCT_OFFSET (EggUniqueClass, activated),
+			      NULL, NULL, g_cclosure_marshal_VOID__VOID,
+			      G_TYPE_NONE, 0);
+}
+
+/**
+ * egg_unique_init:
+ * @egg_unique: This class instance
+ **/
+static void
+egg_unique_init (EggUnique *egg_unique)
+{
+	egg_unique->priv = EGG_UNIQUE_GET_PRIVATE (egg_unique);
+	egg_unique->priv->uniqueapp = NULL;
+}
+
+/**
+ * egg_unique_finalize:
+ * @object: This class instance
+ **/
+static void
+egg_unique_finalize (GObject *object)
+{
+	EggUnique *egg_unique;
+	g_return_if_fail (object != NULL);
+	g_return_if_fail (EGG_IS_UNIQUE (object));
+
+	egg_unique = EGG_UNIQUE_OBJECT (object);
+	egg_unique->priv = EGG_UNIQUE_GET_PRIVATE (egg_unique);
+
+	if (egg_unique->priv->uniqueapp != NULL)
+		g_object_unref (egg_unique->priv->uniqueapp);
+	G_OBJECT_CLASS (egg_unique_parent_class)->finalize (object);
+}
+
+/**
+ * egg_unique_new:
+ * Return value: new class instance.
+ **/
+EggUnique *
+egg_unique_new (void)
+{
+	EggUnique *egg_unique;
+	egg_unique = g_object_new (EGG_UNIQUE_TYPE, NULL);
+	return EGG_UNIQUE_OBJECT (egg_unique);
+}
+
-- 
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