Add 'no updates' page and fix update loading logic

main.go

@@ -40,16 +40,23 @@ func GetSystemUpdater() *SystemUpdater {
 }
 
 var updates map[string]apm.PackageChanges
+var updatesLoaded bool
 
 func (su *SystemUpdater) backgroundStart() {
 	updatesSources := apm.NewUpdatesSources()
 	us := make(map[string]apm.PackageChanges)
 
 	for name, source := range updatesSources {
-		us[name] = source.GetPackageChanges()
+		changes := source.GetPackageChanges()
+		if len(changes.UpgradedPackages) > 0 ||
+			len(changes.NewInstalledPackages) > 0 ||
+			len(changes.RemovedPackages) > 0 {
+			us[name] = changes
+		}
 	}
 
 	updates = us
+	updatesLoaded = true
 }
 
 func (su *SystemUpdater) onActivate() {
@@ -61,17 +68,20 @@ func (su *SystemUpdater) onActivate() {
 
 	window.Present()
 
-	// Это выглядит прям очень плохо... Потом надо бы переделать по уму
 	glib.TimeoutAdd(100, func() bool {
+		if !updatesLoaded {
+			return true
+		}
+
 		if len(updates) > 0 {
 			window.FillWithChanges(su, updates)
-
 			window.stack.SetVisibleChildName("main")
 			window.updateButton.ConnectActivated(window.StartUpdateProcess)
-			return false
+		} else {
+			window.stack.SetVisibleChildName("noupdates")
 		}
 
-		return true
+		return false
 	})
 }
 

window.ui

@@ -104,6 +104,17 @@
                         <property name="name">loading</property>
                       </object>
                     </child>
+                    <child>
+                      <object class="GtkStackPage">
+                        <property name="child">
+                          <object class="AdwStatusPage">
+                            <property name="icon-name">emblem-ok-symbolic</property>
+                            <property name="title" translatable="yes">System is up to date</property>
+                          </object>
+                        </property>
+                        <property name="name">noupdates</property>
+                      </object>
+                    </child>
                   </object>
                 </property>
                 <property name="top-bar-style">raised</property>