File browser: use GeoPackage items for gpkg files

src/providers/ogr/qgsgeopackagedataitems.cpp

@@ -120,7 +120,7 @@ void QgsGeoPackageRootItem::createDatabase()
 #endif
 
 
-QgsGeoPackageConnectionItem::QgsGeoPackageConnectionItem( QgsDataItem *parent, const QString &name, const QString &path )
+QgsGeoPackageCollectionItem::QgsGeoPackageCollectionItem( QgsDataItem *parent, const QString &name, const QString &path )
   : QgsDataCollectionItem( parent, name, path )
   , mPath( path )
 {
@@ -129,7 +129,7 @@ QgsGeoPackageConnectionItem::QgsGeoPackageConnectionItem( QgsDataItem *parent, c
 
 
 
-QVector<QgsDataItem *> QgsGeoPackageConnectionItem::createChildren()
+QVector<QgsDataItem *> QgsGeoPackageCollectionItem::createChildren()
 {
   QVector<QgsDataItem *> children;
   const auto layers = QgsOgrLayerItem::subLayers( mPath, QStringLiteral( "GPKG" ) );
@@ -148,30 +148,31 @@ QVector<QgsDataItem *> QgsGeoPackageConnectionItem::createChildren()
   return children;
 }
 
-bool QgsGeoPackageConnectionItem::equal( const QgsDataItem *other )
+bool QgsGeoPackageCollectionItem::equal( const QgsDataItem *other )
 {
   if ( type() != other->type() )
   {
     return false;
   }
-  const QgsGeoPackageConnectionItem *o = dynamic_cast<const QgsGeoPackageConnectionItem *>( other );
+  const QgsGeoPackageCollectionItem *o = dynamic_cast<const QgsGeoPackageCollectionItem *>( other );
   return o && mPath == o->mPath && mName == o->mName;
 
 }
 
 #ifdef HAVE_GUI
 
-QList<QAction *> QgsGeoPackageConnectionItem::actions()
+QList<QAction *> QgsGeoPackageCollectionItem::actions()
 {
   QList<QAction *> lst;
 
-  QAction *actionDeleteConnection = new QAction( tr( "Remove connection" ), this );
-  connect( actionDeleteConnection, &QAction::triggered, this, &QgsGeoPackageConnectionItem::deleteConnection );
-  lst.append( actionDeleteConnection );
+  // Add to stored connections
+  QAction *actionAddConnection = new QAction( tr( "Add connection" ), this );
+  connect( actionAddConnection, &QAction::triggered, this, &QgsGeoPackageCollectionItem::addConnection );
+  lst.append( actionAddConnection );
 
   // Add table to existing DB
   QAction *actionAddTable = new QAction( tr( "Create a new layer or table..." ), this );
-  connect( actionAddTable, &QAction::triggered, this, &QgsGeoPackageConnectionItem::addTable );
+  connect( actionAddTable, &QAction::triggered, this, &QgsGeoPackageCollectionItem::addTable );
   lst.append( actionAddTable );
 
   return lst;
@@ -180,7 +181,7 @@ QList<QAction *> QgsGeoPackageConnectionItem::actions()
 
 
 
-bool QgsGeoPackageConnectionItem::handleDrop( const QMimeData *data, Qt::DropAction )
+bool QgsGeoPackageCollectionItem::handleDrop( const QMimeData *data, Qt::DropAction )
 {
 
   if ( !QgsMimeDataUtils::isUriList( data ) )
@@ -327,7 +328,7 @@ bool QgsGeoPackageConnectionItem::handleDrop( const QMimeData *data, Qt::DropAct
 }
 
 
-bool QgsGeoPackageConnectionItem::deleteGeoPackageRasterLayer( const QString &uri, QString &errCause )
+bool QgsGeoPackageCollectionItem::deleteGeoPackageRasterLayer( const QString &uri, QString &errCause )
 {
   bool result = false;
   // Better safe than sorry
@@ -444,6 +445,40 @@ bool QgsGeoPackageConnectionItem::deleteGeoPackageRasterLayer( const QString &ur
   return result;
 }
 
+QgsGeoPackageConnectionItem::QgsGeoPackageConnectionItem( QgsDataItem *parent, const QString &name, const QString &path )
+  : QgsGeoPackageCollectionItem( parent, name, path )
+{
+
+}
+
+bool QgsGeoPackageConnectionItem::equal( const QgsDataItem *other )
+{
+  if ( type() != other->type() )
+  {
+    return false;
+  }
+  const QgsGeoPackageConnectionItem *o = dynamic_cast<const QgsGeoPackageConnectionItem *>( other );
+  return o && mPath == o->mPath && mName == o->mName;
+
+}
+
+#ifdef HAVE_GUI
+QList<QAction *> QgsGeoPackageConnectionItem::actions()
+{
+  QList<QAction *> lst;
+
+  QAction *actionDeleteConnection = new QAction( tr( "Remove connection" ), this );
+  connect( actionDeleteConnection, &QAction::triggered, this, &QgsGeoPackageConnectionItem::deleteConnection );
+  lst.append( actionDeleteConnection );
+
+  // Add table to existing DB
+  QAction *actionAddTable = new QAction( tr( "Create a new layer or table..." ), this );
+  connect( actionAddTable, &QAction::triggered, this, &QgsGeoPackageConnectionItem::addTable );
+  lst.append( actionAddTable );
+
+
+  return lst;
+}
 
 void QgsGeoPackageConnectionItem::deleteConnection()
 {
@@ -451,8 +486,8 @@ void QgsGeoPackageConnectionItem::deleteConnection()
   mParent->refreshConnections();
 }
 
-#ifdef HAVE_GUI
-void QgsGeoPackageConnectionItem::addTable()
+
+void QgsGeoPackageCollectionItem::addTable()
 {
   QgsNewGeoPackageLayerDialog dialog( nullptr );
   QFileInfo fileInfo( mPath );
@@ -472,6 +507,14 @@ void QgsGeoPackageConnectionItem::addTable()
     QgsDebugMsg( QStringLiteral( "Cannot add Table: connection %1 does not exists or the path is empy!" ).arg( connName ) );
   }
 }
+
+void QgsGeoPackageCollectionItem::addConnection()
+{
+  QgsOgrDbConnection connection( mName, QStringLiteral( "GeoPackage" ) );
+  connection.save();
+  emit connectionsChanged();
+}
+
 #endif
 
 #ifdef HAVE_GUI
@@ -554,7 +597,7 @@ QgsGeoPackageRasterLayerItem::QgsGeoPackageRasterLayerItem( QgsDataItem *parent,
 
 bool QgsGeoPackageRasterLayerItem::executeDeleteLayer( QString &errCause )
 {
-  return QgsGeoPackageConnectionItem::deleteGeoPackageRasterLayer( mUri, errCause );
+  return QgsGeoPackageCollectionItem::deleteGeoPackageRasterLayer( mUri, errCause );
 }
 
 

src/providers/ogr/qgsgeopackagedataitems.h

@@ -64,12 +64,16 @@ class QgsGeoPackageVectorLayerItem : public QgsGeoPackageAbstractLayerItem
 };
 
 
-class QgsGeoPackageConnectionItem : public QgsDataCollectionItem
+/**
+ * \brief The QgsGeoPackageCollectionItem class is the base class for
+ *        GeoPackage container
+ */
+class QgsGeoPackageCollectionItem : public QgsDataCollectionItem
 {
     Q_OBJECT
 
   public:
-    QgsGeoPackageConnectionItem( QgsDataItem *parent, const QString &name, const QString &path );
+    QgsGeoPackageCollectionItem( QgsDataItem *parent, const QString &name, const QString &path );
     QVector<QgsDataItem *> createChildren() override;
     virtual bool equal( const QgsDataItem *other ) override;
 
@@ -87,9 +91,8 @@ class QgsGeoPackageConnectionItem : public QgsDataCollectionItem
 
   public slots:
 #ifdef HAVE_GUI
-    void editConnection();
-    void deleteConnection();
     void addTable();
+    void addConnection();
 #endif
 
   protected:
@@ -97,6 +100,31 @@ class QgsGeoPackageConnectionItem : public QgsDataCollectionItem
 };
 
 
+/**
+ * \brief The QgsGeoPackageConnectionItem class adds the stored
+ *        connection management to QgsGeoPackageCollectionItem
+ */
+class QgsGeoPackageConnectionItem : public QgsGeoPackageCollectionItem
+{
+    Q_OBJECT
+
+  public:
+    QgsGeoPackageConnectionItem( QgsDataItem *parent, const QString &name, const QString &path );
+    virtual bool equal( const QgsDataItem *other ) override;
+
+#ifdef HAVE_GUI
+    QList<QAction *> actions() override;
+#endif
+
+  public slots:
+#ifdef HAVE_GUI
+    void editConnection();
+    void deleteConnection();
+#endif
+
+};
+
+
 class QgsGeoPackageRootItem : public QgsDataCollectionItem
 {
     Q_OBJECT

src/providers/ogr/qgsogrdataitems.cpp

@@ -22,6 +22,7 @@
 #include "qgsproject.h"
 #include "qgsvectorlayer.h"
 #include "qgsrasterlayer.h"
+#include "qgsgeopackagedataitems.h"
 
 #include <QFileInfo>
 #include <QTextStream>
@@ -567,9 +568,19 @@ QGISEXTERN QgsDataItem *dataItem( QString path, QgsDataItem *parentItem )
 #endif
   }
 
-  // return item without testing if:
-  // scanExtSetting
-  // or zipfile and scan zip == "Basic scan"
+  // Filters out the OGR/GDAL supported formats that can contain multiple layers
+  // and should be treated like a DB: GeoPackage and SQLite
+  // NOTE: this formats are scanned for rasters too and they must
+  //       be skipped by "gdal" provider or the rasters will be listed
+  //       twice. ogrSupportedDbLayersExtensions must be kept in sync
+  //       with the companion variable (same name) in the gdal provider
+  //       class
+  // TODO: add more OGR supported multiple layers formats here!
+  QStringList ogrSupportedDbLayersExtensions;
+  ogrSupportedDbLayersExtensions << QLatin1String( "gpkg" ) << QLatin1String( "sqlite" ) << QLatin1String( "db" );
+
+  // Fast track: return item without testing if:
+  // scanExtSetting or zipfile and scan zip == "Basic scan"
   if ( scanExtSetting ||
        ( ( is_vsizip || is_vsitar ) && scanZipSetting == QLatin1String( "basic" ) ) )
   {
@@ -596,13 +607,18 @@ QGISEXTERN QgsDataItem *dataItem( QString path, QgsDataItem *parentItem )
     // Handle collections
     // Check if the layer has sublayers by comparing the extension
     QgsDataItem *item;
-    QStringList multipleLayersExtensions;
-    // TODO: add more OGR supported multiple layers formats here!
-    multipleLayersExtensions << QLatin1String( "gpkg" ) << QLatin1String( "sqlite" ) << QLatin1String( "db" );
-    if ( ! multipleLayersExtensions.contains( suffix ) )
+    if ( ! ogrSupportedDbLayersExtensions.contains( suffix ) )
+    {
       item = new QgsOgrLayerItem( parentItem, name, path, path, QgsLayerItem::Vector );
+    }
+    else if ( suffix.compare( QLatin1String( "gpkg" ), Qt::CaseInsensitive ) == 0 )
+    {
+      item = new QgsGeoPackageCollectionItem( parentItem, name, path );
+    }
     else
+    {
       item = new QgsOgrDataCollectionItem( parentItem, name, path );
+    }
 
     if ( item )
       return item;
@@ -625,10 +641,9 @@ QGISEXTERN QgsDataItem *dataItem( QString path, QgsDataItem *parentItem )
 
   QgsDebugMsgLevel( QString( "GDAL Driver : %1" ).arg( GDALGetDriverShortName( hDriver ) ), 2 );
 
-  int numLayers = GDALDatasetGetLayerCount( hDataSource );
-
   QgsDataItem *item = nullptr;
 
+  int numLayers = OGR_DS_GetLayerCount( hDataSource );
   if ( numLayers == 1 )
   {
     QgsDebugMsgLevel( QString( "using name = %1" ).arg( name ), 2 );
@@ -639,6 +654,10 @@ QGISEXTERN QgsDataItem *dataItem( QString path, QgsDataItem *parentItem )
     QgsDebugMsgLevel( QString( "using name = %1" ).arg( name ), 2 );
     item = new QgsOgrDataCollectionItem( parentItem, name, path );
   }
+  else if ( suffix.compare( QLatin1String( "gpkg" ), Qt::CaseInsensitive ) == 0 )
+  {
+    item = new QgsGeoPackageCollectionItem( parentItem, name, path );
+  }
 
   GDALClose( hDataSource );
   return item;