Source select signals: remove duplicate code and rely to the base class

src/gui/qgsdatasourcemanagerdialog.cpp

@@ -76,12 +76,7 @@ QgsDataSourceManagerDialog::QgsDataSourceManagerDialog( QWidget *parent, QgsMapC
   // Add data provider dialogs
   QWidget *dlg = nullptr;
 
-  dlg = providerDialog( QStringLiteral( "delimitedtext" ), tr( "Delimited Text" ), QStringLiteral( "/mActionAddDelimitedTextLayer.svg" ) );
-
-  if ( dlg )
-  {
-    connect( dlg, SIGNAL( addVectorLayer( QString, QString, QString ) ), this, SLOT( vectorLayerAdded( QString, QString, QString ) ) );
-  }
+  addVectorProviderDialog( QStringLiteral( "delimitedtext" ), tr( "Delimited Text" ), QStringLiteral( "/mActionAddDelimitedTextLayer.svg" ) );
 
 #ifdef HAVE_POSTGRESQL
   addDbProviderDialog( QStringLiteral( "postgres" ), tr( "PostgreSQL" ), QStringLiteral( "/mActionAddPostgisLayer.svg" ) );
@@ -97,11 +92,13 @@ QgsDataSourceManagerDialog::QgsDataSourceManagerDialog( QWidget *parent, QgsMapC
   addDbProviderDialog( QStringLiteral( "oracle" ), tr( "Oracle" ), QStringLiteral( "/mActionAddOracleLayer.svg" ) );
 #endif
 
-  dlg = providerDialog( QStringLiteral( "virtual" ), tr( "Virtual Layer" ), QStringLiteral( "/mActionAddVirtualLayer.svg" ) );
+  dlg = addVectorProviderDialog( QStringLiteral( "virtual" ), tr( "Virtual Layer" ), QStringLiteral( "/mActionAddVirtualLayer.svg" ) );
 
+  // Apparently this is the only provider using replaceVectorLayer, we should
+  // move this in to the base abstract class when it is used by at least one
+  // additional provider.
   if ( dlg )
   {
-    connect( dlg, SIGNAL( addVectorLayer( QString, QString, QString ) ), this, SLOT( vectorLayerAdded( QString, QString, QString ) ) );
     connect( dlg, SIGNAL( replaceVectorLayer( QString, QString, QString, QString ) ), this, SIGNAL( replaceSelectedVectorLayer( QString, QString, QString, QString ) ) );
   }
 
@@ -197,7 +194,7 @@ QgsAbstractDataSourceWidget *QgsDataSourceManagerDialog::providerDialog( const Q
   }
 }
 
-void QgsDataSourceManagerDialog::addDbProviderDialog( const QString providerKey, const QString providerName, const QString icon, QString title )
+QgsAbstractDataSourceWidget *QgsDataSourceManagerDialog::addDbProviderDialog( const QString providerKey, const QString providerName, const QString icon, QString title )
 {
   QgsAbstractDataSourceWidget *dlg = providerDialog( providerKey, providerName, icon, title );
   if ( dlg )
@@ -211,9 +208,10 @@ void QgsDataSourceManagerDialog::addDbProviderDialog( const QString providerKey,
     connect( dlg, SIGNAL( connectionsChanged() ), this, SIGNAL( connectionsChanged() ) );
     connect( this, SIGNAL( providerDialogsRefreshRequested() ), dlg, SLOT( refresh() ) );
   }
+  return dlg;
 }
 
-void QgsDataSourceManagerDialog::addRasterProviderDialog( const QString providerKey, const QString providerName, const QString icon, QString title )
+QgsAbstractDataSourceWidget *QgsDataSourceManagerDialog::addRasterProviderDialog( const QString providerKey, const QString providerName, const QString icon, QString title )
 {
   QgsAbstractDataSourceWidget *dlg = providerDialog( providerKey, providerName, icon, title );
   if ( dlg )
@@ -223,9 +221,10 @@ void QgsDataSourceManagerDialog::addRasterProviderDialog( const QString provider
     connect( dlg, SIGNAL( connectionsChanged() ), this, SIGNAL( connectionsChanged() ) );
     connect( this,  SIGNAL( providerDialogsRefreshRequested() ), dlg, SLOT( refresh() ) );
   }
+  return dlg;
 }
 
-void QgsDataSourceManagerDialog::addVectorProviderDialog( const QString providerKey, const QString providerName, const QString icon, QString title )
+QgsAbstractDataSourceWidget *QgsDataSourceManagerDialog::addVectorProviderDialog( const QString providerKey, const QString providerName, const QString icon, QString title )
 {
   QgsAbstractDataSourceWidget *dlg = providerDialog( providerKey, providerName, icon, title );
   if ( dlg )
@@ -234,6 +233,7 @@ void QgsDataSourceManagerDialog::addVectorProviderDialog( const QString provider
     { this->vectorLayerAdded( vectorLayerPath, baseName, providerKey ); } );
     connect( this,  SIGNAL( providerDialogsRefreshRequested() ), dlg, SLOT( refresh() ) );
   }
+  return dlg;
 }
 
 void QgsDataSourceManagerDialog::showEvent( QShowEvent *e )

src/gui/qgsdatasourcemanagerdialog.h

@@ -116,9 +116,9 @@ class GUI_EXPORT QgsDataSourceManagerDialog : public QgsOptionsDialogBase, priva
   private:
     // Return the dialog from the provider
     QgsAbstractDataSourceWidget *providerDialog( const QString providerKey, const QString providerName, const QString icon, QString title = QString() );
-    void addDbProviderDialog( QString const providerKey, QString const providerName, QString const icon, QString title = QString() );
-    void addRasterProviderDialog( QString const providerKey, QString const providerName, QString const icon, QString title = QString() );
-    void addVectorProviderDialog( QString const providerKey, QString const providerName, QString const icon, QString title = QString() );
+    QgsAbstractDataSourceWidget *addDbProviderDialog( QString const providerKey, QString const providerName, QString const icon, QString title = QString() );
+    QgsAbstractDataSourceWidget *addRasterProviderDialog( QString const providerKey, QString const providerName, QString const icon, QString title = QString() );
+    QgsAbstractDataSourceWidget *addVectorProviderDialog( QString const providerKey, QString const providerName, QString const icon, QString title = QString() );
     Ui::QgsDataSourceManagerDialog *ui;
     QgsBrowserDockWidget *mBrowserWidget = nullptr;
     int mPreviousRow;

src/providers/delimitedtext/qgsdelimitedtextsourceselect.cpp

@@ -193,7 +193,7 @@ void QgsDelimitedTextSourceSelect::addButtonClicked()
 
 
   // add the layer to the map
-  emit addVectorLayer( QString::fromAscii( url.toEncoded() ), txtLayerName->text(), QStringLiteral( "delimitedtext" ) );
+  emit addVectorLayer( QString::fromAscii( url.toEncoded() ), txtLayerName->text() );
   if ( widgetMode() == QgsProviderRegistry::WidgetMode::None )
   {
     accept();

src/providers/delimitedtext/qgsdelimitedtextsourceselect.h

@@ -72,9 +72,6 @@ class QgsDelimitedTextSourceSelect : public QgsAbstractDataSourceWidget, private
     void updateFieldsAndEnable();
     void enableAccept();
     bool validate();
-
-  signals:
-    void addVectorLayer( const QString &, const QString &, const QString & );
 };
 
 #endif // QGSDELIMITEDTEXTSOURCESELECT_H

src/providers/virtual/qgsvirtuallayersourceselect.cpp

@@ -376,7 +376,7 @@ void QgsVirtualLayerSourceSelect::addButtonClicked()
   }
   else
   {
-    emit addVectorLayer( def.toString(), layerName, QStringLiteral( "virtual" ) );
+    emit addVectorLayer( def.toString(), layerName );
   }
   if ( widgetMode() == QgsProviderRegistry::WidgetMode::None )
   {

src/providers/virtual/qgsvirtuallayersourceselect.h

@@ -54,8 +54,6 @@ class QgsVirtualLayerSourceSelect : public QgsAbstractDataSourceWidget, private
     void updateLayersList();
 
   signals:
-    //! Source, name, provider
-    void addVectorLayer( QString, QString, QString );
     //! Old_id, source, name, provider
     void replaceVectorLayer( QString, QString, QString, QString );