dbhub: Log in by only selecting an identity, no need to press a button

This removes the login button from the dbhub dock. Instead of selecting
an identity and then clicking the login button, you are now logged in by
just selecting an identity.

src/RemoteDock.cpp

@@ -24,7 +24,7 @@ RemoteDock::RemoteDock(MainWindow* parent)
     ui->treeStructure->setModel(remoteModel);
 
     // Reload the directory tree when a database upload has finished
-    connect(&remoteDatabase, &RemoteDatabase::uploadFinished, this, &RemoteDock::setNewIdentity);
+    connect(&remoteDatabase, &RemoteDatabase::uploadFinished, remoteModel, &RemoteModel::refresh);
 
     // Whenever a new directory listing has been parsed, check if it was a new root dir and, if so, open the user's directory
     connect(remoteModel, &RemoteModel::directoryListingParsed, this, &RemoteDock::newDirectoryNode);
@@ -53,8 +53,12 @@ RemoteDock::~RemoteDock()
 
 void RemoteDock::reloadSettings()
 {
-    // Load list of client certs
+    // Clear list of client certificates and add a dummy entry which does nothing except serve as
+    // an explanation to the user.
     ui->comboUser->clear();
+    ui->comboUser->addItem(tr("Select an identity to connect"), "dummy");
+
+    // Load list of client certs
     QStringList client_certs = Settings::getValue("remote", "client_certificates").toStringList();
     for(const QString& file : client_certs)
     {
@@ -67,13 +71,16 @@ void RemoteDock::reloadSettings()
     ui->comboUser->addItem(tr("Public"), ":/user_certs/public.cert.pem");
 }
 
-void RemoteDock::setNewIdentity()
+void RemoteDock::setNewIdentity(const QString& identity)
 {
-    // Get identity
-    QString identity = ui->comboUser->currentText();
-    if(identity.isEmpty())
+    // Do nothing if the dummy entry was selected
+    if(ui->comboUser->currentData() == "dummy")
         return;
 
+    // Check if the dummy item is still there and remove it if it is
+    if(ui->comboUser->itemData(0) == "dummy")
+        ui->comboUser->removeItem(0);
+
     // Get certificate file name
     QString cert = ui->comboUser->itemData(ui->comboUser->findText(identity), Qt::UserRole).toString();
     if(cert.isEmpty())

src/RemoteDock.h

@@ -26,7 +26,7 @@ public slots:
     void reject() override;
 
 private slots:
-    void setNewIdentity();
+    void setNewIdentity(const QString& identity);
     void fetchDatabase(const QModelIndex& idx);
     void pushDatabase();
     void newDirectoryNode(const QModelIndex& parent);

src/RemoteDock.ui

@@ -40,20 +40,6 @@
            </property>
           </widget>
          </item>
-         <item>
-          <widget class="QToolButton" name="buttonLogin">
-           <property name="toolTip">
-            <string>Connect to the remote server using the currently selected identity. The correct server is taken from the identity as well.</string>
-           </property>
-           <property name="text">
-            <string>Go</string>
-           </property>
-           <property name="icon">
-            <iconset resource="icons/icons.qrc">
-             <normaloff>:/icons/cog_go.png</normaloff>:/icons/cog_go.png</iconset>
-           </property>
-          </widget>
-         </item>
          <item>
           <spacer name="horizontalSpacer">
            <property name="orientation">
@@ -179,10 +165,10 @@
  </resources>
  <connections>
   <connection>
-   <sender>buttonLogin</sender>
-   <signal>clicked()</signal>
+   <sender>comboUser</sender>
+   <signal>currentTextChanged(QString)</signal>
    <receiver>RemoteDock</receiver>
-   <slot>setNewIdentity()</slot>
+   <slot>setNewIdentity(QString)</slot>
    <hints>
     <hint type="sourcelabel">
      <x>551</x>
@@ -244,7 +230,7 @@
   </connection>
  </connections>
  <slots>
-  <slot>setNewIdentity()</slot>
+  <slot>setNewIdentity(QString)</slot>
   <slot>fetchDatabase(QModelIndex)</slot>
   <slot>pushDatabase()</slot>
   <slot>switchToMainView()</slot>

src/RemoteModel.cpp

@@ -122,6 +122,12 @@ void RemoteModel::setNewRootDir(const QString& url, const QString& cert)
     currentRootDirectory = url;
     currentClientCert = cert;
 
+    // Fetch root directory
+    refresh();
+}
+
+void RemoteModel::refresh()
+{
     // Fetch root directory and put the reply data under the root item
     remoteDatabase.fetch(currentRootDirectory, RemoteDatabase::RequestTypeDirectory, currentClientCert, QModelIndex());
 }

src/RemoteModel.h

@@ -65,6 +65,7 @@ public:
     ~RemoteModel() override;
 
     void setNewRootDir(const QString& url, const QString& cert);
+    void refresh();
 
     QModelIndex index(int row, int column,const QModelIndex& parent = QModelIndex()) const override;
     QModelIndex parent(const QModelIndex& index) const override;