[gnome-todo/wip/gbsneto/plugins] window: add function to set title

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit d87b815fa543d1149c1b4c466212a1a597071157
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Mon Jan 4 03:06:19 2016 -0200

    window: add function to set title
    
    Used by the next commit.

 src/gtd-window.c |   32 ++++++++++++++++++++++++++++++++
 src/gtd-window.h |    4 ++++
 2 files changed, 36 insertions(+), 0 deletions(-)
---
diff --git a/src/gtd-window.c b/src/gtd-window.c
index ce0d267..ada465b 100644
--- a/src/gtd-window.c
+++ b/src/gtd-window.c
@@ -800,3 +800,35 @@ gtd_window_set_mode (GtdWindow     *window,
       g_object_notify (G_OBJECT (window), "mode");
     }
 }
+
+/**
+ * gtd_window_set_custom_title:
+ * @window: a #GtdWindow
+ * @title: (nullable): the #GtkHeaderBar title
+ * @subtitle: (nullable): the #GtkHeaderBar subtitle
+ *
+ * Sets the #GtdWindow's headerbar title and subtitle. If @title is %NULL,
+ * the header will be set to the stack switcher.
+ */
+void
+gtd_window_set_custom_title (GtdWindow   *window,
+                             const gchar *title,
+                             const gchar *subtitle)
+{
+  GtdWindowPrivate *priv;
+
+  g_return_if_fail (GTD_IS_WINDOW (window));
+
+  priv = window->priv;
+
+  if (title)
+    {
+      gtk_header_bar_set_custom_title (priv->headerbar, NULL);
+      gtk_header_bar_set_title (priv->headerbar, title);
+      gtk_header_bar_set_subtitle (window->priv->headerbar, subtitle);
+    }
+  else
+    {
+      gtk_header_bar_set_custom_title (priv->headerbar, GTK_WIDGET (priv->stack_switcher));
+    }
+}
diff --git a/src/gtd-window.h b/src/gtd-window.h
index 2c96d36..5cc690e 100644
--- a/src/gtd-window.h
+++ b/src/gtd-window.h
@@ -45,6 +45,10 @@ GtdWindowMode             gtd_window_get_mode             (GtdWindow
 void                      gtd_window_set_mode             (GtdWindow             *window,
                                                            GtdWindowMode          mode);
 
+void                      gtd_window_set_custom_title     (GtdWindow             *window,
+                                                           const gchar           *title,
+                                                           const gchar           *subtitle);
+
 G_END_DECLS
 
 #endif /* GTD_WINDOW_H */