[gnome-builder] gtk: add helper to get IdeContext from widget hierarchy

[Christian Hergert <chergert src gnome org>]

commit 18906d4959ba17e47f9d738f7c8bcbf18a5dc864
Author: Christian Hergert <christian hergert me>
Date:   Tue Feb 10 15:11:01 2015 -0800

    gtk: add helper to get IdeContext from widget hierarchy

 src/util/gb-widget.c |   16 ++++++++++++++++
 src/util/gb-widget.h |    2 ++
 2 files changed, 18 insertions(+), 0 deletions(-)
---
diff --git a/src/util/gb-widget.c b/src/util/gb-widget.c
index ff79c19..a6d7454 100644
--- a/src/util/gb-widget.c
+++ b/src/util/gb-widget.c
@@ -256,3 +256,19 @@ gb_widget_activate_action (GtkWidget   *widget,
 
   g_warning ("Failed to resolve action %s.%s", prefix, action_name);
 }
+
+IdeContext *
+gb_widget_get_context (GtkWidget *widget)
+{
+  GbWorkbench *workbench;
+  IdeContext *context = NULL;
+
+  g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
+
+  if ((workbench = gb_widget_get_workbench (widget)))
+    context = gb_workbench_get_context (workbench);
+
+  g_return_val_if_fail (!context || IDE_IS_CONTEXT (context), NULL);
+
+  return context;
+}
diff --git a/src/util/gb-widget.h b/src/util/gb-widget.h
index 5bca324..e2f1246 100644
--- a/src/util/gb-widget.h
+++ b/src/util/gb-widget.h
@@ -20,6 +20,7 @@
 #define GB_WIDGET_H
 
 #include <gtk/gtk.h>
+#include <ide.h>
 
 #include "gb-workbench-types.h"
 
@@ -32,6 +33,7 @@ G_BEGIN_DECLS
   gtk_widget_class_bind_template_child_private (GTK_WIDGET_CLASS (klass), \
                                                 TN, field)
 
+IdeContext      *gb_widget_get_context     (GtkWidget    *widget);
 void             gb_widget_add_style_class (gpointer      widget,
                                             const gchar  *class_name);
 cairo_surface_t *gb_widget_snapshot        (GtkWidget    *widget,