Various fixes in AppListUpdateView

src/Application.vala

@@ -225,6 +225,7 @@ public class AppCenter.App : Gtk.Application {
 
         if (show_updates) {
             ((MainWindow) active_window).go_to_installed ();
+            show_updates = false;
         }
 
         active_window.present ();

src/Core/UpdateManager.vala

@@ -227,6 +227,7 @@ public class AppCenterCore.UpdateManager : Object {
     }
 
     public async void update_cache (bool force = false) {
+        updates_liststore.remove_all ();
         cancellable.reset ();
 
         if (Utils.is_running_in_demo_mode () || Utils.is_running_in_guest_session ()) {

src/MainWindow.vala

@@ -145,6 +145,14 @@ public class AppCenter.MainWindow : Gtk.ApplicationWindow {
         backend.notify["job-type"].connect (update_overlaybar_label);
 
         overlaybar.label = backend.job_type.to_string ();
+
+        if (installed_view == null) {
+            installed_view = new Views.AppListUpdateView ();
+
+            installed_view.show_app.connect ((package) => {
+                show_package (package);
+            });
+        }
     }
 
     public override bool close_request () {
@@ -192,14 +200,6 @@ public class AppCenter.MainWindow : Gtk.ApplicationWindow {
     }
 
     public void go_to_installed () {
-        if (installed_view == null) {
-            installed_view = new Views.AppListUpdateView ();
-
-            installed_view.show_app.connect ((package) => {
-                show_package (package);
-            });
-        }
-
         if (installed_view.parent != null) {
             navigation_view.pop_to_page (installed_view);
         } else {

src/Views/AppListUpdateView.vala

@@ -33,6 +33,7 @@ namespace AppCenter.Views {
         private Gtk.Label updated_label;
         private Gtk.SizeGroup action_button_group;
         private ListStore installed_liststore;
+        private Granite.HeaderLabel installed_header;
         private Widgets.SizeLabel size_label;
         private bool updating_all_apps = false;
         private Cancellable? refresh_cancellable = null;
@@ -93,7 +94,7 @@ namespace AppCenter.Views {
             list_box.bind_model (update_manager.updates_liststore, create_row_from_package);
             list_box.set_placeholder (loading_view);
 
-            var installed_header = new Granite.HeaderLabel (_("Up to Date")) {
+            installed_header = new Granite.HeaderLabel (_("Up to Date")) {
                 margin_top = 12,
                 margin_end = 12,
                 margin_bottom = 12,
@@ -131,10 +132,24 @@ namespace AppCenter.Views {
             );
 
             var refresh_menuitem = new Gtk.Button () {
-                action_name = "app.refresh",
-                child = refresh_accellabel
+                child = refresh_accellabel,
+                sensitive = false
             };
             refresh_menuitem.add_css_class (Granite.STYLE_CLASS_MENUITEM);
+            refresh_menuitem.clicked.connect (() => {
+                activate_action ("app.refresh", null);
+            });
+
+            AppCenter.App.refresh_action.activate.connect (() => {
+                installed_liststore.remove_all ();
+                list_box.set_placeholder (loading_view);
+
+                refresh_menuitem.sensitive = false;
+                header_revealer.reveal_child = false;
+                updated_revealer.reveal_child = false;
+                installed_header.visible = false;
+                list_box.vexpand = true;
+            });
 
             var menu_popover_box = new Gtk.Box (Gtk.Orientation.VERTICAL, 0);
             menu_popover_box.append (automatic_updates_button);
@@ -178,14 +193,11 @@ namespace AppCenter.Views {
             /// TRANSLATORS: the name of the Installed Apps view
             title = C_("view", "Installed");
 
-            on_installed_changed.begin ((obj, res) => {
-                on_installed_changed.end (res);
-                installed_header.visible = true;
-            });
-
-            update_manager.updates_liststore.items_changed.connect (() => {
+            update_manager.updates_liststore.items_changed.connect ((position, removed, added) => {
                 Idle.add (() => {
-                    on_updates_changed ();
+                    if (added > 0) {
+                        on_updates_changed ();
+                    }
                     return GLib.Source.REMOVE;
                 });
             });
@@ -218,24 +230,18 @@ namespace AppCenter.Views {
 
             flatpak_backend.notify ["working"].connect (() => {
                 if (flatpak_backend.working) {
+                    refresh_menuitem.sensitive = false;
+                    header_revealer.reveal_child = false;
                     updated_revealer.reveal_child = false;
-
-                    switch (flatpak_backend.job_type) {
-                        case GET_PREPARED_PACKAGES:
-                        case GET_UPDATES:
-                        case REFRESH_CACHE:
-                        case UPDATE_PACKAGE:
-                            list_box.set_placeholder (loading_view);
-                            break;
-                        default:
-                            list_box.set_placeholder (null);
-                            break;
-                    }
+                    list_box.set_placeholder (loading_view);
                 } else {
                     list_box.set_placeholder (null);
+                    refresh_menuitem.sensitive = true;
+                    on_updates_changed ();
                 }
             });
 
+
             automatic_updates_button.notify["active"].connect (() => {
                 if (automatic_updates_button.active) {
                     update_manager.update_cache.begin (true);
@@ -295,12 +301,15 @@ namespace AppCenter.Views {
 
                 unowned var flatpak_backend = AppCenterCore.FlatpakBackend.get_default ();
                 var installed_apps = yield flatpak_backend.get_installed_applications (refresh_cancellable);
+                installed_header.visible = !installed_apps.is_empty;
 
                 foreach (var package in installed_apps) {
                     if (package.state != UPDATE_AVAILABLE && package.kind != ADDON && package.kind != FONT) {
                         installed_liststore.insert_sorted (package, compare_installed_func);
                     }
                 }
+
+                list_box.vexpand = installed_liststore.n_items <= 0;
             }
 
             refresh_cancellable = null;

src/Widgets/AppContainers/InstalledPackageRowGrid.vala

@@ -122,7 +122,9 @@ public class AppCenter.Widgets.InstalledPackageRowGrid : AbstractPackageRowGrid
                     release_button_revealer.reveal_child = true;
                 }
             } else {
-                release_button_revealer.reveal_child = true;
+                if (newest.get_description () != null) {
+                    release_button_revealer.reveal_child = true;
+                }
             }
         }