[gnome-usage] storage-view: Connect listbox signal from UI file

[Felipe Borges <felipeborges src gnome org>]

commit 2dd6abd48de98e28cd45d901d4170cc10b7fba7d
Author: Felipe Borges <felipeborges gnome org>
Date:   Fri Apr 5 11:05:43 2019 +0200

    storage-view: Connect listbox signal from UI file

 data/ui/storage-view.ui       | 1 +
 src/storage/storage-view.vala | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/data/ui/storage-view.ui b/data/ui/storage-view.ui
index 4022706..92a0dab 100644
--- a/data/ui/storage-view.ui
+++ b/data/ui/storage-view.ui
@@ -42,6 +42,7 @@
               <object class="DzlStackList" id="listbox">
                 <property name="visible">True</property>
                 <property name="vexpand">True</property>
+                <signal name="row-activated" handler="on_row_activated"/>
                 <style>
                   <class name="storage-list"/>
                 </style>
diff --git a/src/storage/storage-view.vala b/src/storage/storage-view.vala
index 274b74a..3d0e1eb 100644
--- a/src/storage/storage-view.vala
+++ b/src/storage/storage-view.vala
@@ -102,7 +102,6 @@ public class Usage.StorageView : Usage.View {
     }
 
     public StorageView () {
-        listbox.row_activated.connect (on_row_activated);
         graph.min_percentage_shown_files = MIN_PERCENTAGE_SHOWN_FILES;
 
         setup_header_label ();
@@ -110,6 +109,7 @@ public class Usage.StorageView : Usage.View {
         populate_view.begin ();
     }
 
+    [GtkCallback]
     private void on_row_activated (Gtk.ListBoxRow row) {
         var storage_row = row as StorageViewRow;