Show the About page when passed -V (--version).

1 files changed, 47 insertions, 17 deletions

diff --git a/src/adwaita/disfluid-application.c b/src/adwaita/disfluid-application.c
index 08af0c8..471bfae 100644
--- a/src/adwaita/disfluid-application.c
+++ b/src/adwaita/disfluid-application.c
@@ -23,6 +23,7 @@
 struct _DisfluidAdwApplication
 {
   AdwApplication parent_instance;
+  gboolean only_show_version;
 };
 
 struct _DisfluidAdwApplicationClass
@@ -41,27 +42,61 @@ disfluid_adw_application_class_init (DisfluidAdwApplicationClass * klass)
 }
 
 static void
-disfluid_adw_application_init (DisfluidAdwApplication * self)
+launch_about_window (GSimpleAction * action, GVariant * parameter,
+		     gpointer user_data)
 {
-  (void) self;
-  /* Perform default initialization of self. */
+  (void) action;
+  (void) parameter;
+  DisfluidAdwApplication *self = user_data;
+  disfluid_adw_show_about (GTK_APPLICATION (self));
 }
 
 static void
-activated (GtkApplication * app)
+disfluid_adw_application_init (DisfluidAdwApplication * self)
 {
-  GtkWidget *window = disfluid_adw_window_new (app);
-  gtk_window_present (GTK_WINDOW (window));
+  (void) self;
+  /* Perform default initialization of self. */
+  self->only_show_version = false;
+  g_application_set_flags (G_APPLICATION (self),
+			   g_application_get_flags (G_APPLICATION (self)) |
+			   G_APPLICATION_HANDLES_OPEN);
+  static GActionEntry app_actions[] = {
+    {.name = "about",.activate = launch_about_window}
+  };
+  g_action_map_add_action_entries (G_ACTION_MAP (self), app_actions,
+				   G_N_ELEMENTS (app_actions), self);
+  GOptionEntry app_options[] = {
+    {
+     .long_name = N_("version"),
+     .short_name = 'V',
+     .flags = G_OPTION_FLAG_NONE,
+     .arg = G_OPTION_ARG_NONE,
+     .arg_data = &(self->only_show_version),
+     .description = N_("Show the program version.")},
+    {0}
+  };
+  for (size_t i = 0; i < sizeof (app_options) / sizeof (app_options[0]); i++)
+    {
+      app_options[i].long_name = dgettext (PACKAGE, app_options[i].long_name);
+      app_options[i].description =
+	dgettext (PACKAGE, app_options[i].description);
+    }
+  g_application_add_main_option_entries (G_APPLICATION (self), app_options);
 }
 
 static void
-launch_about_window (GSimpleAction * action, GVariant * parameter,
-		     gpointer user_data)
+activated (GtkApplication * app)
 {
-  (void) action;
-  (void) parameter;
-  DisfluidAdwApplication *self = user_data;
-  disfluid_adw_show_about (GTK_APPLICATION (self));
+  DisfluidAdwApplication *self = DISFLUID_ADW_APPLICATION (app);
+  if (self->only_show_version)
+    {
+      launch_about_window (NULL, NULL, app);
+    }
+  else
+    {
+      GtkWidget *window = disfluid_adw_window_new (app);
+      gtk_window_present (GTK_WINDOW (window));
+    }
 }
 
 DisfluidAdwApplication *
@@ -73,11 +108,6 @@ disfluid_adw_application_new (void)
 					     "application-id",
 					     disfluid_adw_application_id (),
 					     NULL);
-  static GActionEntry app_actions[] = {
-    {.name = "about",.activate = launch_about_window}
-  };
-  g_action_map_add_action_entries (G_ACTION_MAP (self), app_actions,
-				   G_N_ELEMENTS (app_actions), self);
   g_signal_connect (self, "activate", G_CALLBACK (activated), NULL);
   return self;
 }