Add actions and handlers for hello world and quit

Create two actions, "hello-world" and "quit", and add them to the
application (which is an implementation of GActionMap). Connect the
"activate" signal of the actions to handlers. Add an accelerator for
each action, so that they can be triggered with a keyboard shortcut.

1 files changed, 42 insertions, 2 deletions

diff --git a/c-gnome-app.c b/c-gnome-app.c
index fabfece..6d20243 100644
--- a/c-gnome-app.c
+++ b/c-gnome-app.c
@@ -1,14 +1,53 @@
 /* Build with "gcc `pkg-config --cflags --libs gtk+-3.0` c-gnome-app.c */
 #include <gtk/gtk.h>
 
+static GtkWidget *window;
+
+static void
+on_hello_world (GSimpleAction *action,
+                GVariant *parameter,
+                gpointer user_data)
+{
+    g_print ("%s\n", "Hello world!");
+}
+
+static void
+on_quit (GSimpleAction *action,
+         GVariant *parameter,
+         gpointer user_data)
+{
+    g_application_quit (G_APPLICATION (user_data));
+}
+
+static const GActionEntry actions[] =
+{
+    { "hello-world", on_hello_world },
+    { "quit", on_quit }
+};
+
 static void
 on_activate (GApplication *app,
              gpointer user_data)
 {
-    GtkWidget *window;
+    gtk_widget_show_all (window);
+}
+
+static void
+on_startup (GApplication *app,
+            gpointer user_data)
+{
+    const gchar * const hello_world_accel[] = { "<Primary>h", NULL };
+    const gchar * const quit_accel[] = { "<Primary>q", NULL };
 
+    g_action_map_add_action_entries (G_ACTION_MAP (app), actions,
+                                     G_N_ELEMENTS (actions), app);
     window = gtk_application_window_new (GTK_APPLICATION (app));
-    gtk_widget_show_all (window);
+    gtk_application_set_accels_for_action (GTK_APPLICATION (app),
+                                           "app.hello-world",
+                                           hello_world_accel);
+    gtk_application_set_accels_for_action (GTK_APPLICATION (app),
+                                           "app.quit",
+                                           quit_accel);
 }
 
 int
@@ -20,6 +59,7 @@ main (int argc,
 
     app = gtk_application_new ("org.example.CGnome", G_APPLICATION_FLAGS_NONE);
     g_signal_connect (app, "activate", G_CALLBACK (on_activate), NULL);
+    g_signal_connect (app, "startup", G_CALLBACK (on_startup), NULL);
     status = g_application_run (G_APPLICATION (app), argc, argv);
 
     g_object_unref (app);