Some more advancements, stored TT-RSS accounts are now correctly loaded w/o feeds/categories so far.

src/core/messagesmodel.cpp

@@ -81,7 +81,7 @@ void MessagesModel::loadMessages(RootItem *item) {
     if (!item->getParentServiceRoot()->loadMessagesForItem(item, this)) {
       setFilter("true != true");
       qWarning("Loading of messages from item '%s' failed.", qPrintable(item->title()));
-      qApp->showGuiMessage(tr("Loading of messages from item '%s' failed.").arg(item->title()),
+      qApp->showGuiMessage(tr("Loading of messages from item '%1' failed.").arg(item->title()),
                            tr("Loading of messages failed, maybe messages could not be downloaded."),
                            QSystemTrayIcon::Critical,
                            qApp->mainForm(),

src/services/tt-rss/ttrssserviceentrypoint.cpp

@@ -23,8 +23,10 @@
 #include "gui/dialogs/formmain.h"
 #include "services/tt-rss/gui/formeditaccount.h"
 #include "services/tt-rss/ttrssserviceroot.h"
+#include "services/tt-rss/network/ttrssnetworkfactory.h"
 
 #include <QPointer>
+#include <QSqlQuery>
 
 
 TtRssServiceEntryPoint::TtRssServiceEntryPoint(){
@@ -72,5 +74,23 @@ ServiceRoot *TtRssServiceEntryPoint::createNewRoot() {
 }
 
 QList<ServiceRoot*> TtRssServiceEntryPoint::initializeSubtree() {
-  return QList<ServiceRoot*>();
+  // Check DB if standard account is enabled.
+  QSqlDatabase database = qApp->database()->connection(QSL("TtRssServiceEntryPoint"), DatabaseFactory::FromSettings);
+  QSqlQuery query(database);
+  QList<ServiceRoot*> roots;
+
+  if (query.exec("SELECT id, username, password, url FROM TtRssAccounts;")) {
+    while (query.next()) {
+      TtRssServiceRoot *root = new TtRssServiceRoot();
+      root->setAccountId(query.value(0).toInt());
+      root->network()->setUsername(query.value(1).toString());
+      root->network()->setPassword(query.value(2).toString());
+      root->network()->setUrl(query.value(3).toString());
+      root->updateTitle();
+      root->loadFromDatabase();
+      roots.append(root);
+    }
+  }
+
+  return roots;
 }

src/services/tt-rss/ttrssserviceroot.cpp

@@ -184,7 +184,7 @@ void TtRssServiceRoot::saveToDatabase() {
 }
 
 void TtRssServiceRoot::loadFromDatabase() {
-  // Account ID is set, load connection data from DB.
+  // TODO: Load feeds/categories from DB.
 }
 
 void TtRssServiceRoot::updateTitle() {

src/services/tt-rss/ttrssserviceroot.h

@@ -67,10 +67,9 @@ class TtRssServiceRoot : public ServiceRoot {
 
     void saveToDatabase();
     void loadFromDatabase();
-
-  private:
     void updateTitle();
 
+  private:
     TtRssNetworkFactory *m_network;
 };