4 files changed, 236 insertions, 1 deletions
diff --git a/modules/offline-alert/Makefile.am b/modules/offline-alert/Makefile.am
index cdad615797..2979343869 100644
--- a/modules/offline-alert/Makefile.am
+++ b/modules/offline-alert/Makefile.am
@@ -3,6 +3,7 @@ module_LTLIBRARIES = libevolution-module-offline-alert.la
 libevolution_module_offline_alert_la_CPPFLAGS =			\
 	$(AM_CPPFLAGS)						\
 	-I$(top_srcdir)						\
+	-I$(top_srcdir)/widgets					\
 	-DG_LOG_DOMAIN=\"evolution-offline-alert\"		\
 	$(GNOME_PLATFORM_CFLAGS)
 
diff --git a/modules/offline-alert/evolution-offline-alert.c b/modules/offline-alert/evolution-offline-alert.c
new file mode 100644
index 0000000000..8b1de84d6c
--- /dev/null
+++ b/modules/offline-alert/evolution-offline-alert.c
@@ -0,0 +1,221 @@
+/*
+ * evolution-offline-alert.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#include <shell/e-shell-view.h>
+#include <shell/e-shell-window-actions.h>
+#include <e-util/e-alert-sink.h>
+#include <e-util/e-extension.h>
+
+/* Standard GObject macros */
+#define E_TYPE_OFFLINE_ALERT \
+	(e_offline_alert_get_type ())
+#define E_OFFLINE_ALERT(obj) \
+	(G_TYPE_CHECK_INSTANCE_CAST \
+	((obj), E_TYPE_OFFLINE_ALERT, EOfflineAlert))
+
+typedef struct _EOfflineAlert EOfflineAlert;
+typedef struct _EOfflineAlertClass EOfflineAlertClass;
+
+struct _EOfflineAlert {
+	EExtension parent;
+	gpointer alert;  /* weak pointer */
+};
+
+struct _EOfflineAlertClass {
+	EExtensionClass parent_class;
+};
+
+/* Module Entry Points */
+void e_module_load (GTypeModule *type_module);
+void e_module_unload (GTypeModule *type_module);
+
+/* Forward Declarations */
+GType e_offline_alert_get_type (void);
+
+G_DEFINE_DYNAMIC_TYPE (EOfflineAlert, e_offline_alert, E_TYPE_EXTENSION)
+
+static EShell *
+offline_alert_get_shell (EOfflineAlert *extension)
+{
+	EExtensible *extensible;
+
+	extensible = e_extension_get_extensible (E_EXTENSION (extension));
+
+	return E_SHELL (extensible);
+}
+
+static void
+offline_alert_online_cb (EShell *shell,
+                         GParamSpec *pspec,
+                         EOfflineAlert *extension)
+{
+	if (!e_shell_get_online (shell))
+		return;
+
+	if (extension->alert != NULL)
+		e_alert_response (extension->alert, GTK_RESPONSE_OK);
+}
+
+static void
+offline_alert_network_available_cb (EShell *shell,
+                                    GParamSpec *pspec,
+                                    EOfflineAlert *extension)
+{
+	GList *list, *iter;
+
+	if (e_shell_get_network_available (shell))
+		return;
+
+	g_return_if_fail (extension->alert == NULL);
+
+	extension->alert = e_alert_new ("offline-alert:no-network", NULL);
+
+	g_object_add_weak_pointer (
+		G_OBJECT (extension->alert), &extension->alert);
+
+	/* Broadcast the alert to all EShellWindows. */
+	list = e_shell_get_watched_windows (shell);
+	for (iter = list; iter != NULL; iter = g_list_next (iter)) {
+		GtkWidget *window = iter->data;
+
+		if (!E_IS_SHELL_WINDOW (window))
+			continue;
+
+		e_alert_sink_submit_alert (window, extension->alert);
+	}
+
+	g_object_unref (extension->alert);
+}
+
+static void
+offline_alert_window_created_cb (EShell *shell,
+                                 GtkWindow *window,
+                                 EOfflineAlert *extension)
+{
+	GtkAction *action;
+
+	if (!E_IS_SHELL_WINDOW (window))
+		return;
+
+	/* Connect these signals after we have the first EShellWindow
+	 * to avoid false-positive signals during EShell initialization. */
+
+	g_signal_connect (
+		shell, "notify::online",
+		G_CALLBACK (offline_alert_online_cb), extension);
+
+	g_signal_connect (
+		shell, "notify::network-available",
+		G_CALLBACK (offline_alert_network_available_cb), extension);
+
+	g_signal_handlers_disconnect_by_func (
+		shell, offline_alert_window_created_cb, extension);
+
+	if (e_shell_get_online (shell))
+		return;
+
+	if (!e_shell_get_network_available (shell)) {
+		g_object_notify (G_OBJECT (shell), "network-available");
+		return;
+	}
+
+	g_return_if_fail (extension->alert == NULL);
+
+	/* This alert only shows at startup, not when the user
+	 * chooses to work offline.  That's why we only wanted
+	 * the first EShellWindow. */
+
+	action = E_SHELL_WINDOW_ACTION_WORK_ONLINE (window);
+
+	extension->alert = e_alert_new ("offline-alert:offline", NULL);
+	e_alert_add_action (extension->alert, action, GTK_RESPONSE_NONE);
+
+	g_object_add_weak_pointer (
+		G_OBJECT (extension->alert), &extension->alert);
+
+	e_alert_sink_submit_alert (GTK_WIDGET (window), extension->alert);
+
+	g_object_unref (extension->alert);
+}
+
+static void
+offline_alert_dispose (GObject *object)
+{
+	EOfflineAlert *extension;
+
+	extension = E_OFFLINE_ALERT (object);
+
+	if (extension->alert != NULL) {
+		g_object_remove_weak_pointer (
+			G_OBJECT (extension->alert), &extension->alert);
+		extension->alert = NULL;
+	}
+
+	/* Chain up to parent's dispose() method. */
+	G_OBJECT_CLASS (e_offline_alert_parent_class)->dispose (object);
+}
+
+static void
+offline_alert_constructed (GObject *object)
+{
+	EShell *shell;
+	EOfflineAlert *extension;
+
+	extension = E_OFFLINE_ALERT (object);
+	shell = offline_alert_get_shell (extension);
+
+	/* Watch for the first EShellWindow. */
+	g_signal_connect (
+		shell, "window-created",
+		G_CALLBACK (offline_alert_window_created_cb), extension);
+}
+
+static void
+e_offline_alert_class_init (EOfflineAlertClass *class)
+{
+	GObjectClass *object_class;
+	EExtensionClass *extension_class;
+
+	object_class = G_OBJECT_CLASS (class);
+	object_class->dispose = offline_alert_dispose;
+	object_class->constructed = offline_alert_constructed;
+
+	extension_class = E_EXTENSION_CLASS (class);
+	extension_class->extensible_type = E_TYPE_SHELL;
+}
+
+static void
+e_offline_alert_class_finalize (EOfflineAlertClass *class)
+{
+}
+
+static void
+e_offline_alert_init (EOfflineAlert *extension)
+{
+}
+
+G_MODULE_EXPORT void
+e_module_load (GTypeModule *type_module)
+{
+	e_offline_alert_register_type (type_module);
+}
+
+G_MODULE_EXPORT void
+e_module_unload (GTypeModule *type_module)
+{
+}
diff --git a/modules/offline-alert/evolution-offline-alert.error b/modules/offline-alert/evolution-offline-alert.error
new file mode 100644
index 0000000000..13ba4ff238
--- /dev/null
+++ b/modules/offline-alert/evolution-offline-alert.error
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<error-list domain="offline-alert">
+  <error type="info" id="offline">
+    <primary>Evolution is currently offline.</primary>
+    <secondary>Click 'Work Online' to return to online mode.</secondary>
+    <button response="GTK_RESPONSE_OK" label="_Dismiss"></button>
+  </error>
+  <error type="info" id="no-network">
+    <primary>Evolution is currently offline due to a network outage.</primary>
+    <secondary>Evolution will return to online mode once a network connection is established.</secondary>
+    <button response="GTK_RESPONSE_OK" label="_Dismiss"></button>
+  </error>
+</error-list>
+\ No newline at end of file
diff --git a/modules/offline-alert/evolution-offline-alert.error.xml b/modules/offline-alert/evolution-offline-alert.error.xml
index 65a1ec7099..a6362da42e 100644
--- a/modules/offline-alert/evolution-offline-alert.error.xml
+++ b/modules/offline-alert/evolution-offline-alert.error.xml
@@ -7,7 +7,7 @@
   </error>
   <error id="no-network" type="info">
     <_primary>Evolution is currently offline due to a network outage.</_primary>
-    <_secondary>Evolution will return to online mode once a network connection is established.</secondary>
+    <_secondary>Evolution will return to online mode once a network connection is established.</_secondary>
     <button _label="_Dismiss" response="GTK_RESPONSE_OK"/>
   </error>
 </error-list>