[libdazzle] app-window: hook up shortcut engine from DzlApplicationWindow

[Christian Hergert <chergert src gnome org>]

commit 0aaa2624a33c977ef76248b44824197333ffd54a
Author: Christian Hergert <chergert redhat com>
Date:   Sun Aug 27 17:16:02 2017 -0700

    app-window: hook up shortcut engine from DzlApplicationWindow
    
    This should be safe even when shortcuts are not being used, so it saves
    some code for applications that are going to use the shortcut manager
    as well.

 src/app/dzl-application-window.c |   41 ++++++++++++++++++++++++++++++++++++++
 1 files changed, 41 insertions(+), 0 deletions(-)
---
diff --git a/src/app/dzl-application-window.c b/src/app/dzl-application-window.c
index 103cb96..fd9511e 100644
--- a/src/app/dzl-application-window.c
+++ b/src/app/dzl-application-window.c
@@ -19,11 +19,28 @@
 #define G_LOG_DOMAIN "dzl-application-window"
 
 #include "app/dzl-application-window.h"
+#include "shortcuts/dzl-shortcut-manager.h"
 #include "util/dzl-gtk.h"
 
 #define DEFAULT_DISMISSAL_SECONDS   3
 #define SHOW_HEADER_WITHIN_DISTANCE 5
 
+/**
+ * SECTION:dzl-application-window
+ * @title: DzlApplicationWindow
+ * @short_description: An base application window for applications
+ *
+ * The #DzlApplicationWindow class provides a #GtkApplicationWindow subclass
+ * that integrates well with #DzlApplication. It provides features such as:
+ *
+ *  - Integration with the #DzlShortcutManager for capture/bubble keyboard
+ *    input events.
+ *  - Native support for fullscreen state by re-parenting the #GtkHeaderBar as
+ *    necessary. #DzlApplicationWindow does expect you to use GtkHeaderBar.
+ *
+ * Since: 3.26
+ */
+
 typedef struct
 {
   GtkStack    *titlebar_container;
@@ -36,6 +53,7 @@ typedef struct
   guint        fullscreen_source;
   guint        fullscreen_reveal_source;
   guint        fullscreen : 1;
+  guint        in_key_press : 1;
 } DzlApplicationWindowPrivate;
 
 enum {
@@ -324,6 +342,28 @@ dzl_application_window_add (GtkContainer *container,
   gtk_container_add (GTK_CONTAINER (priv->event_box), widget);
 }
 
+static gboolean
+dzl_application_window_key_press_event (GtkWidget   *widget,
+                                        GdkEventKey *event)
+{
+  DzlApplicationWindow *self = (DzlApplicationWindow *)widget;
+  DzlApplicationWindowPrivate *priv = dzl_application_window_get_instance_private (self);
+  gboolean ret;
+
+  g_assert (DZL_IS_APPLICATION_WINDOW (self));
+  g_assert (event != NULL);
+
+  /* Be re-entrant safe from the shortcut manager */
+  if (priv->in_key_press)
+    return GTK_WIDGET_CLASS (dzl_application_window_parent_class)->key_press_event (widget, event);
+
+  priv->in_key_press = TRUE;
+  ret = dzl_shortcut_manager_handle_event (NULL, event, widget);
+  priv->in_key_press = FALSE;
+
+  return ret;
+}
+
 static void
 dzl_application_window_destroy (GtkWidget *widget)
 {
@@ -408,6 +448,7 @@ dzl_application_window_class_init (DzlApplicationWindowClass *klass)
   object_class->set_property = dzl_application_window_set_property;
 
   widget_class->destroy = dzl_application_window_destroy;
+  widget_class->key_press_event = dzl_application_window_key_press_event;
 
   container_class->add = dzl_application_window_add;