add checkbox to open sublayers in a group

python/gui/qgssublayersdialog.sip

@@ -39,6 +39,18 @@ class QgsSublayersDialog : QDialog
     //! @note added in 2.16
     QgsSublayersDialog::LayerDefinitionList selection();
 
+    //! Set if we should display the add to group checkbox
+    //! @note added in 3.0
+    void setShowAddToGroupCheckbox( bool showAddToGroupCheckbox );
+
+    //! If we should display the add to group checkbox
+    //! @note added in 3.0
+    bool showAddToGroupCheckbox() const;
+
+    //! If we should add layers in a group
+    //! @note added in 3.0
+    bool addToGroupCheckbox() const;
+
   public slots:
     void on_buttonBox_helpRequested();
     int exec();

src/app/qgisapp.cpp

@@ -4061,6 +4061,7 @@ void QgisApp::askUserForGDALSublayers( QgsRasterLayer *layer )
 
   // We initialize a selection dialog and display it.
   QgsSublayersDialog chooseSublayersDialog( QgsSublayersDialog::Gdal, QStringLiteral( "gdal" ), this );
+  chooseSublayersDialog.setShowAddToGroupCheckbox( true );
 
   QgsSublayersDialog::LayerDefinitionList layers;
   QStringList names;
@@ -4112,6 +4113,13 @@ void QgisApp::askUserForGDALSublayers( QgsRasterLayer *layer )
     QRegExp rx( "\"(.*)\"" );
     QString uri, name;
 
+    QgsLayerTreeGroup *group = nullptr;
+    bool addToGroup = settings.value( QStringLiteral( "/qgis/openSublayersInGroup" ), true ).toBool();
+    if ( addToGroup )
+    {
+      group = QgsProject::instance()->layerTreeRoot()->insertGroup( 0, layer->name() );
+    }
+
     Q_FOREACH ( const QgsSublayersDialog::LayerDefinition &def, chooseSublayersDialog.selection() )
     {
       int i = def.layerId;
@@ -4128,11 +4136,19 @@ void QgisApp::askUserForGDALSublayers( QgsRasterLayer *layer )
 
       QgsRasterLayer *rlayer = new QgsRasterLayer( sublayers[i], name );
       if ( rlayer && rlayer->isValid() )
+      {
+        if ( addToGroup )
+        {
+          QgsProject::instance()->addMapLayer( rlayer, false );
+          group->addLayer( rlayer );
+        }
+        else
         {
           addRasterLayer( rlayer );
         }
       }
     }
+  }
 }
 
 // should the GDAL sublayers dialog should be presented to the user?
@@ -4158,6 +4174,11 @@ void QgisApp::loadGDALSublayers( const QString &uri, const QStringList &list )
 {
   QString path, name;
   QgsRasterLayer *subLayer = nullptr;
+  QgsSettings settings;
+  QgsLayerTreeGroup *group = nullptr;
+  bool addToGroup = settings.value( QStringLiteral( "/qgis/openSublayersInGroup" ), true ).toBool();
+  if ( addToGroup )
+    group = QgsProject::instance()->layerTreeRoot()->insertGroup( 0, QFileInfo( uri ).completeBaseName() );
 
   //add layers in reverse order so they appear in the right order in the layer dock
   for ( int i = list.size() - 1; i >= 0 ; i-- )
@@ -4170,7 +4191,15 @@ void QgisApp::loadGDALSublayers( const QString &uri, const QStringList &list )
     if ( subLayer )
     {
       if ( subLayer->isValid() )
+        if ( addToGroup )
+        {
+          QgsProject::instance()->addMapLayer( subLayer, false );
+          group->addLayer( subLayer );
+        }
+        else
+        {
           addRasterLayer( subLayer );
+        }
       else
         delete subLayer;
     }
@@ -4224,12 +4253,14 @@ void QgisApp::askUserForOGRSublayers( QgsVectorLayer *layer )
 
   // We initialize a selection dialog and display it.
   QgsSublayersDialog chooseSublayersDialog( QgsSublayersDialog::Ogr, QStringLiteral( "ogr" ), this );
+  chooseSublayersDialog.setShowAddToGroupCheckbox( true );
   chooseSublayersDialog.populateLayerTable( list );
 
   if ( !chooseSublayersDialog.exec() )
     return;
 
   QString uri = layer->source();
+  QString name = layer->name();
   //the separator char & was changed to | to be compatible
   //with url for protocol drivers
   if ( uri.contains( '|', Qt::CaseSensitive ) )
@@ -4276,12 +4307,19 @@ void QgisApp::askUserForOGRSublayers( QgsVectorLayer *layer )
 
   if ( ! myList.isEmpty() )
   {
-    // Register layer(s) with the layers registry
+    QgsSettings settings;
-    QgsProject::instance()->addMapLayers( myList );
+    bool addToGroup = settings.value( QStringLiteral( "/qgis/openSublayersInGroup" ), true ).toBool();
+    QgsLayerTreeGroup *group = nullptr;
+    if ( addToGroup )
+      group = QgsProject::instance()->layerTreeRoot()->insertGroup( 0, name );
+
+    QgsProject::instance()->addMapLayers( myList, ! addToGroup );
     Q_FOREACH ( QgsMapLayer *l, myList )
     {
       bool ok;
       l->loadDefaultStyle( ok );
+      if ( addToGroup )
+        group->addLayer( l );
     }
   }
 }

src/gui/qgssublayersdialog.cpp

@@ -59,6 +59,13 @@ QgsSublayersDialog::QgsSublayersDialog( ProviderType providerType, const QString
 
   QgsSettings settings;
   restoreGeometry( settings.value( "/Windows/" + mName + "SubLayers/geometry" ).toByteArray() );
+
+  // Checkbox about adding sublayers to a group
+  checkboxAddToGroup = new QCheckBox( tr( "Add layers to a group" ) );
+  bool addToGroup = settings.value( QStringLiteral( "/qgis/openSublayersInGroup" ), false ).toBool();
+  checkboxAddToGroup->setChecked( addToGroup );
+  if ( mShowAddToGroupCheckbox )
+    buttonBox->addButton( checkboxAddToGroup, QDialogButtonBox::ActionRole );
 }
 
 QgsSublayersDialog::~QgsSublayersDialog()
@@ -177,5 +184,7 @@ int QgsSublayersDialog::exec()
   int ret = QDialog::exec();
   if ( overrideCursor )
     QApplication::setOverrideCursor( cursor );
+
+  settings.setValue( QStringLiteral( "/qgis/openSublayersInGroup" ), checkboxAddToGroup->isChecked() );
   return ret;
 }

src/gui/qgssublayersdialog.h

@@ -17,6 +17,7 @@
 #define QGSSUBLAYERSDIALOG_H
 
 #include <QDialog>
+#include <QCheckBox>
 #include <ui_qgssublayersdialogbase.h>
 #include "qgscontexthelp.h"
 #include "qgis_gui.h"
@@ -63,6 +64,18 @@ class GUI_EXPORT QgsSublayersDialog : public QDialog, private Ui::QgsSublayersDi
     //! @note added in 2.16
     LayerDefinitionList selection();
 
+    //! Set if we should display the add to group checkbox
+    //! @note added in 3.0
+    void setShowAddToGroupCheckbox( bool showAddToGroupCheckbox ) { mShowAddToGroupCheckbox = showAddToGroupCheckbox; }
+
+    //! If we should display the add to group checkbox
+    //! @note added in 3.0
+    bool showAddToGroupCheckbox() const { return mShowAddToGroupCheckbox; }
+
+    //! If we should add layers in a group
+    //! @note added in 3.0
+    bool addToGroupCheckbox() const { return checkboxAddToGroup->isChecked(); }
+
   public slots:
     void on_buttonBox_helpRequested() { QgsContextHelp::run( metaObject()->className() ); }
     int exec();
@@ -72,6 +85,8 @@ class GUI_EXPORT QgsSublayersDialog : public QDialog, private Ui::QgsSublayersDi
     QStringList mSelectedSubLayers;
     bool mShowCount;  //!< Whether to show number of features in the table
     bool mShowType;   //!< Whether to show type in the table
+    bool mShowAddToGroupCheckbox;   //!< Whether to show the add to group checkbox
+    QCheckBox *checkboxAddToGroup = nullptr;
 };
 
 #endif