[epiphany] Fix Double-clicking on reading mode button maximizes the window

[Jan-Michael Brummer <jbrummer src gnome org>]

commit 4071db17a3434ac7b800f862a3db65f71cc4255b
Author: Jan-Michael Brummer <jan brummer tabos org>
Date:   Sat Dec 29 00:05:55 2018 +0100

    Fix Double-clicking on reading mode button maximizes the window
    
    Fixes: https://gitlab.gnome.org/GNOME/epiphany/issues/44

 lib/widgets/ephy-location-entry.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)
---
diff --git a/lib/widgets/ephy-location-entry.c b/lib/widgets/ephy-location-entry.c
index 4e1f3d943..dc33e3d69 100644
--- a/lib/widgets/ephy-location-entry.c
+++ b/lib/widgets/ephy-location-entry.c
@@ -729,6 +729,14 @@ button_box_size_allocated_cb (GtkWidget    *widget,
   g_free (css);
 }
 
+static gboolean
+event_button_press_event_cb (GtkWidget *widget,
+                             GdkEvent  *event,
+                             gpointer   user_data)
+{
+  return GDK_EVENT_STOP;
+}
+
 static void
 ephy_location_entry_suggestion_activated (DzlSuggestionEntry *entry,
                                           DzlSuggestion      *arg1,
@@ -767,6 +775,7 @@ suggestion_selected (DzlSuggestionEntry *entry,
 static void
 ephy_location_entry_construct_contents (EphyLocationEntry *entry)
 {
+  GtkWidget *event;
   GtkWidget *button_box;
   GtkStyleContext *context;
 
@@ -788,15 +797,22 @@ ephy_location_entry_construct_contents (EphyLocationEntry *entry)
   gtk_widget_show (GTK_WIDGET (entry->url_entry));
   gtk_overlay_add_overlay (GTK_OVERLAY (entry), GTK_WIDGET (entry->url_entry));
 
+  /* Event box */
+  event = gtk_event_box_new ();
+  gtk_widget_set_halign (event, GTK_ALIGN_END);
+  gtk_widget_show (event);
+  g_signal_connect (G_OBJECT (event), "button-press-event", G_CALLBACK (event_button_press_event_cb), entry);
+  gtk_overlay_add_overlay (GTK_OVERLAY (entry), event);
+
   /* Button Box */
   button_box = gtk_button_box_new (GTK_ORIENTATION_HORIZONTAL);
+  gtk_container_add (GTK_CONTAINER (event), button_box);
   gtk_box_set_homogeneous (GTK_BOX (button_box), FALSE);
   g_signal_connect (G_OBJECT (button_box), "size-allocate", G_CALLBACK (button_box_size_allocated_cb), 
entry);
   gtk_button_box_set_layout (GTK_BUTTON_BOX (button_box), GTK_BUTTONBOX_EXPAND);
   gtk_widget_set_halign (button_box, GTK_ALIGN_END);
   gtk_widget_set_margin_end (button_box, 5);
   gtk_widget_show (button_box);
-  gtk_overlay_add_overlay (GTK_OVERLAY (entry), button_box);
 
   /* Bookmark */
   entry->bookmark_event_box = gtk_event_box_new ();