From 692cc42e1023ec439d2fa1a0b9456e8cbfe1cec8 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Mon, 22 Jun 2020 12:47:27 -0400
Subject: [PATCH] Add gtk_widget_prepend_controller

Add a variant of gtk_widget_add_controller that
inserts the controller at the beginning, instead
of the end. This will be used in entry completion
to make sure the entry completion key event handling
supersedes the entry one while the popup is open.

Keep this private for now, until we determine if
it needs to be public api.
---
 gtk/gtkwidget.c        | 17 +++++++++++++++++
 gtk/gtkwidgetprivate.h |  3 +++
 2 files changed, 20 insertions(+)

diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 2cedb2508f..61ae38f0b5 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -11415,6 +11415,23 @@ gtk_widget_add_controller (GtkWidget          *widget,
     gtk_list_list_model_item_added_at (priv->controller_observer, priv->controllers->len - 1);
 }
 
+void
+gtk_widget_prepend_controller (GtkWidget          *widget,
+                               GtkEventController *controller)
+{
+  GtkWidgetPrivate *priv = gtk_widget_get_instance_private (widget);
+
+  GTK_EVENT_CONTROLLER_GET_CLASS (controller)->set_widget (controller, widget);
+
+  if (G_UNLIKELY (!priv->controllers))
+    priv->controllers = g_ptr_array_new ();
+
+  g_ptr_array_insert (priv->controllers, 0, controller);
+
+  if (priv->controller_observer)
+    gtk_list_list_model_item_added_at (priv->controller_observer, 0);
+}
+
 /**
  * gtk_widget_remove_controller:
  * @widget: a #GtkWidget
diff --git a/gtk/gtkwidgetprivate.h b/gtk/gtkwidgetprivate.h
index e7688a65cd..d281dd0f43 100644
--- a/gtk/gtkwidgetprivate.h
+++ b/gtk/gtkwidgetprivate.h
@@ -346,6 +346,9 @@ gboolean          gtk_widget_run_controllers               (GtkWidget
                                                             double               x,
                                                             double               y,
                                                             GtkPropagationPhase  phase);
+
+void              gtk_widget_prepend_controller            (GtkWidget             *widget,
+                                                            GtkEventController    *controller);
 void              gtk_widget_handle_crossing               (GtkWidget             *widget,
                                                             const GtkCrossingData *crossing,
                                                             double                 x,