[bugfix] Sync the bowser connections when changed from the select dialogs

For now, the sync works only in one direction: from the dialogs
to the browser instances

python/gui/qgsbrowserdockwidget.sip

@@ -120,6 +120,10 @@ Emitted when a file needs to be opened
     void handleDropUriList( const QgsMimeDataUtils::UriList & );
 %Docstring
 Emitted when drop uri list needs to be handled
+%End
+    void connectionsChanged( );
+%Docstring
+Connections changed in the browser
 %End
 
   protected:

src/app/qgisapp.cpp

@@ -888,6 +888,8 @@ QgisApp::QgisApp( QSplashScreen *splash, bool restorePlugins, bool skipVersionCh
   addDockWidget( Qt::LeftDockWidgetArea, mBrowserWidget );
   mBrowserWidget->hide();
   connect( this, &QgisApp::newProject, mBrowserWidget, &QgsBrowserDockWidget::updateProjectHome );
+  connect( this, &QgisApp::connectionsChanged, mBrowserWidget, &QgsBrowserDockWidget::refresh );
+  connect( mBrowserWidget, &QgsBrowserDockWidget::connectionsChanged, this, &QgisApp::connectionsChanged );
   connect( mBrowserWidget, &QgsBrowserDockWidget::openFile, this, &QgisApp::openFile );
   connect( mBrowserWidget, &QgsBrowserDockWidget::handleDropUriList, this, &QgisApp::handleDropUriList );
 
@@ -896,6 +898,8 @@ QgisApp::QgisApp( QSplashScreen *splash, bool restorePlugins, bool skipVersionCh
   addDockWidget( Qt::LeftDockWidgetArea, mBrowserWidget2 );
   mBrowserWidget2->hide();
   connect( this, &QgisApp::newProject, mBrowserWidget2, &QgsBrowserDockWidget::updateProjectHome );
+  connect( mBrowserWidget2, &QgsBrowserDockWidget::connectionsChanged, this, &QgisApp::connectionsChanged );
+  connect( this, &QgisApp::connectionsChanged, mBrowserWidget2, &QgsBrowserDockWidget::refresh );
   connect( mBrowserWidget2, &QgsBrowserDockWidget::openFile, this, &QgisApp::openFile );
   connect( mBrowserWidget2, &QgsBrowserDockWidget::handleDropUriList, this, &QgisApp::handleDropUriList );
 
@@ -1594,6 +1598,8 @@ void QgisApp::dataSourceManager( QString pageName )
   {
     mDataSourceManagerDialog = new QgsDataSourceManagerDialog( mapCanvas( ), this );
     // Forward signals to this
+    connect( this, &QgisApp::connectionsChanged, mDataSourceManagerDialog, &QgsDataSourceManagerDialog::refresh );
+    connect( mDataSourceManagerDialog, &QgsDataSourceManagerDialog::connectionsChanged, this, &QgisApp::connectionsChanged );
     connect( mDataSourceManagerDialog, SIGNAL( addRasterLayer( QString const &, QString const &, QString const & ) ),
              this, SLOT( addRasterLayer( QString const &, QString const &, QString const & ) ) );
     connect( mDataSourceManagerDialog, SIGNAL( addVectorLayer( QString const &, QString const &, QString const & ) ),

src/app/qgisapp.h

@@ -1494,6 +1494,12 @@ class APP_EXPORT QgisApp : public QMainWindow, private Ui::MainWindow
 
   signals:
 
+    /**
+     * Emitted when a connection has been added/removed or changed by the provider
+     * selection dialogs
+     */
+    void connectionsChanged( );
+
     /** Emitted when a key is pressed and we want non widget sublasses to be able
       to pick up on this (e.g. maplayer) */
     void keyPressed( QKeyEvent *e );

src/gui/qgsbrowserdockwidget.cpp

@@ -117,7 +117,7 @@ void QgsBrowserDockWidget::showEvent( QShowEvent *e )
     mModel = new QgsBrowserModel( mBrowserView );
     mProxyModel = new QgsBrowserTreeFilterProxyModel( this );
     mProxyModel->setBrowserModel( mModel );
-    mBrowserView->setSettingsSection( objectName().toLower() ); // to distinguish 2 instances ow browser
+    mBrowserView->setSettingsSection( objectName().toLower() ); // to distinguish 2 or more instances of the browser
     mBrowserView->setBrowserModel( mModel );
     mBrowserView->setModel( mProxyModel );
     // provide a horizontal scroll bar instead of using ellipse (...) for longer items
@@ -242,7 +242,8 @@ void QgsBrowserDockWidget::removeFavorite()
 
 void QgsBrowserDockWidget::refresh()
 {
-  refreshModel( QModelIndex() );
+  if ( mModel )
+    refreshModel( QModelIndex() );
 }
 
 void QgsBrowserDockWidget::refreshModel( const QModelIndex &index )

src/gui/qgsbrowserdockwidget.h

@@ -102,6 +102,8 @@ class GUI_EXPORT QgsBrowserDockWidget : public QgsDockWidget, private Ui::QgsBro
     void openFile( const QString & );
     //! Emitted when drop uri list needs to be handled
     void handleDropUriList( const QgsMimeDataUtils::UriList & );
+    //! Connections changed in the browser
+    void connectionsChanged( );
 
   protected:
     //! Show event override

src/gui/qgsdatasourcemanagerdialog.cpp

@@ -51,6 +51,7 @@ QgsDataSourceManagerDialog::QgsDataSourceManagerDialog( QgsMapCanvas *mapCanvas,
   // Forward all browser signals
   connect( mBrowserWidget, &QgsBrowserDockWidget::handleDropUriList, this, &QgsDataSourceManagerDialog::handleDropUriList );
   connect( mBrowserWidget, &QgsBrowserDockWidget::openFile, this, &QgsDataSourceManagerDialog::openFile );
+  connect( mBrowserWidget, &QgsBrowserDockWidget::connectionsChanged, this, &QgsDataSourceManagerDialog::connectionsChanged );
   connect( this, &QgsDataSourceManagerDialog::updateProjectHome, mBrowserWidget, &QgsBrowserDockWidget::updateProjectHome );
 
   // VECTOR Layers (completely different interface: it's not a provider)
@@ -115,6 +116,7 @@ QgsDataSourceManagerDialog::QgsDataSourceManagerDialog( QgsMapCanvas *mapCanvas,
     {
       this->vectorLayerAdded( vectorLayerPath, baseName, QStringLiteral( "WFS" ) );
     } );
+    connect( dlg, SIGNAL( connectionsChanged( ) ), this, SIGNAL( connectionsChanged( ) ) );
   }
 
   addRasterProviderDialog( QStringLiteral( "arcgismapserver" ), tr( "ArcGIS Map Server" ), QStringLiteral( "/mActionAddAmsLayer.svg" ) );
@@ -166,6 +168,12 @@ void QgsDataSourceManagerDialog::setPreviousPage()
   setCurrentPage( prevPage );
 }
 
+void QgsDataSourceManagerDialog::refresh()
+{
+  mBrowserWidget->refresh( );
+  emit dlg_refresh();
+}
+
 void QgsDataSourceManagerDialog::rasterLayerAdded( const QString &uri, const QString &baseName, const QString &providerKey )
 {
   emit addRasterLayer( uri, baseName, providerKey );
@@ -212,6 +220,8 @@ void QgsDataSourceManagerDialog::addDbProviderDialog( const QString providerKey,
              this, SIGNAL( showProgress( int, int ) ) );
     connect( dlg, SIGNAL( progressMessage( QString ) ),
              this, SIGNAL( showStatusMessage( QString ) ) );
+    connect( dlg, SIGNAL( connectionsChanged( ) ), this, SIGNAL( connectionsChanged( ) ) );
+    connect( this,  SIGNAL( dlg_refresh( ) ), dlg, SLOT( refresh( ) ) );
   }
 }
 
@@ -223,5 +233,7 @@ void QgsDataSourceManagerDialog::addRasterProviderDialog( const QString provider
     // Forward
     connect( dlg, SIGNAL( addRasterLayer( QString const &, QString const &, QString const & ) ),
              this, SIGNAL( addRasterLayer( QString const &, QString const &, QString const & ) ) );
+    connect( dlg, SIGNAL( connectionsChanged( ) ), this, SIGNAL( connectionsChanged( ) ) );
+    connect( this,  SIGNAL( dlg_refresh( ) ), dlg, SLOT( refresh( ) ) );
   }
 }

src/gui/qgsdatasourcemanagerdialog.h

@@ -74,6 +74,8 @@ class GUI_EXPORT QgsDataSourceManagerDialog : public QgsOptionsDialogBase, priva
     void vectorLayersAdded( const QStringList &layerQStringList, const QString &enc, const QString &dataSourceType );
     //! Reset current page to previously selected page
     void setPreviousPage();
+    //! Refresh the browser view
+    void refresh( );
 
   signals:
     //! Emitted when a raster layer was selected for addition: for signal forwarding to QgisApp
@@ -102,6 +104,10 @@ class GUI_EXPORT QgsDataSourceManagerDialog : public QgsOptionsDialogBase, priva
     void handleDropUriList( const QgsMimeDataUtils::UriList & );
     //! Update project home directory
     void updateProjectHome();
+    //! Connections changed
+    void connectionsChanged( );
+    // internal signal
+    void dlg_refresh( );
 
   private:
     //! Return the dialog from the provider
@@ -114,6 +120,7 @@ class GUI_EXPORT QgsDataSourceManagerDialog : public QgsOptionsDialogBase, priva
     QgsMapCanvas *mMapCanvas = nullptr;
     int mPreviousRow;
     QStringList mPageNames;
+
 };
 
 #endif // QGSDATASOURCEMANAGERDIALOG_H