Inform about updates

src/manager.cpp

@@ -51,6 +51,10 @@ Manager::Manager()
                    tray_.get(), [this] {
                      tray_->showInformation(QObject::tr("Update completed"));
                    });
+  QObject::connect(updater_.get(), &update::Loader::updatesAvailable,  //
+                   tray_.get(), [this] {
+                     tray_->showInformation(QObject::tr("Updates available"));
+                   });
 #ifdef DEVELOP
   updater_->checkForUpdates();
 #endif

src/service/updates.cpp

@@ -133,6 +133,8 @@ void Loader::handleReply(QNetworkReply *reply)
   if (isUpdatesReply) {
     SOFT_ASSERT(model_, return );
     model_->parse(replyData);
+    if (model_->hasUpdates())
+      emit updatesAvailable();
     return;
   }
 
@@ -309,6 +311,22 @@ void Model::updateStates()
   emitColumnsChanged(QModelIndex());
 }
 
+bool Model::hasUpdates() const
+{
+  if (!root_)
+    return false;
+  return hasUpdates(*root_);
+}
+
+bool Model::hasUpdates(const Model::Component &component) const
+{
+  for (const auto &i : component.children) {
+    if (i->state == State::UpdateAvailable || hasUpdates(*i))
+      return true;
+  }
+  return false;
+}
+
 void Model::updateState(Model::Component &component)
 {
   if (!component.files.empty()) {

src/service/updates.h

@@ -47,6 +47,7 @@ public:
   void setExpansions(const std::map<QString, QString>& expansions);
   UserActions userActions() const;
   void updateStates();
+  bool hasUpdates() const;
 
   QModelIndex index(int row, int column,
                     const QModelIndex& parent) const override;
@@ -74,6 +75,7 @@ private:
 
   std::unique_ptr<Component> parse(const QJsonObject& json) const;
   void updateState(Component& component);
+  bool hasUpdates(const Component& component) const;
   void fillUserActions(UserActions& actions, Component& component) const;
   State currentState(const File& file) const;
   QString expanded(const QString& source) const;
@@ -108,6 +110,7 @@ public:
   Model* model() const;
 
 signals:
+  void updatesAvailable();
   void updated();
   void error(const QString& error);