[gnome-boxes/wip/feborges/new-wizard-design: 9/13] wizard-source: Show either media_scrolled or downloads list

[Felipe Borges <felipeborges src gnome org>]

commit d74dad1a97beb96e23bb257f28e7a12d364af0f7
Author: Felipe Borges <felipeborges gnome org>
Date:   Tue Jan 16 15:39:46 2018 +0100

    wizard-source: Show either media_scrolled or downloads list
    
    Fixes #42
    
    If there are no medias discovered in the filesystem, present a
    list of available downloads. Never show both at the same time.

 data/ui/wizard-source.ui |  8 +++++---
 src/wizard-source.vala   | 14 ++++++++++----
 2 files changed, 15 insertions(+), 7 deletions(-)
---
diff --git a/data/ui/wizard-source.ui b/data/ui/wizard-source.ui
index 23e2d222..a38ee96d 100644
--- a/data/ui/wizard-source.ui
+++ b/data/ui/wizard-source.ui
@@ -88,12 +88,14 @@
         </child>
 
         <child>
-          <object class="BoxesWizardScrolled" id="media_scrolled"/>
+          <object class="BoxesWizardScrolled" id="media_scrolled">
+            <property name="visible">True</property>
+          </object>
         </child>
 
         <child>
-          <object class="GtkListBox" id="available_downloads_listbox">
-            <property name="visible">True</property>
+          <object class="BoxesWizardScrolled" id="downloads_scrolled">
+            <property name="visible">False</property>
           </object>
         </child>
 
diff --git a/src/wizard-source.vala b/src/wizard-source.vala
index 15ef5f3d..e2d19e97 100644
--- a/src/wizard-source.vala
+++ b/src/wizard-source.vala
@@ -326,6 +326,8 @@ private void on_notify_estimated_load_progress () {
     [GtkChild]
     private Boxes.WizardScrolled media_scrolled;
     [GtkChild]
+    private Boxes.WizardScrolled downloads_scrolled;
+    [GtkChild]
     private Gtk.Box url_entry_vbox;
     [GtkChild]
     public Gtk.Entry url_entry;
@@ -336,8 +338,6 @@ private void on_notify_estimated_load_progress () {
     [GtkChild]
     private Gtk.Label libvirt_sys_import_label;
     [GtkChild]
-    private Gtk.ListBox available_downloads_listbox;
-    [GtkChild]
     private Gtk.Button install_rhel_button;
     [GtkChild]
     private Gtk.Image install_rhel_image;
@@ -349,6 +349,7 @@ private void on_notify_estimated_load_progress () {
     private AppWindow window;
 
     private Gtk.ListBox media_vbox;
+    private Gtk.ListBox downloads_vbox;
 
     private Gtk.ListStore? media_urls_store;
 
@@ -429,6 +430,11 @@ private void on_notify_estimated_load_progress () {
         });
         draw_as_css_box (url_entry_vbox);
 
+        downloads_scrolled.setup (num_visible);
+        downloads_vbox = downloads_scrolled.vbox;
+
+        media_scrolled.bind_property ("visible", downloads_scrolled, "visible", BindingFlags.INVERT_BOOLEAN);
+
         update_libvirt_sytem_entry_visibility.begin ();
         add_media_entries.begin ();
 
@@ -452,8 +458,8 @@ public void setup_ui (AppWindow window) {
         var os_db = media_manager.os_db;
 
         var available_downloads_model = new GLib.ListStore (typeof (Osinfo.Os));
-        available_downloads_listbox.bind_model (available_downloads_model, create_downloadable_entry);
-        available_downloads_listbox.row_activated.connect (on_downloadable_entry_clicked);
+        downloads_vbox.bind_model (available_downloads_model, create_downloadable_entry);
+        downloads_vbox.row_activated.connect (on_downloadable_entry_clicked);
 
         downloads_list.bind_model (available_downloads_model, create_downloadable_entry);
         downloads_list.row_activated.connect (on_downloadable_entry_clicked);