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Use querySublayers in QgsVectorLayerSaveAsDialog to determine sublayers of an existing file

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...instead of older deprecated sublayers handling
This commit is contained in:
Nyall Dawson 2021-07-22 13:44:03 +10:00
parent 5dbd7863b8
commit 7dc51d93d5
1 changed files with 17 additions and 26 deletions
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43
src/gui/ogr/qgsvectorlayersaveasdialog.cpp
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@ -26,7 +26,6 @@
#include "qgsmapcanvas.h"
#include "qgsgui.h"
#include "qgsapplication.h"
#include "qgsogrdataitems.h"
#include <QMessageBox>
#include <QFileDialog>
#include <QTextCodec>
@ -35,6 +34,8 @@
#include "gdal.h"
#include "qgsdatums.h"
#include "qgsiconutils.h"
#include "qgsproviderregistry.h"
#include "qgsprovidersublayerdetails.h"
static const int COLUMN_IDX_NAME = 0;
static const int COLUMN_IDX_TYPE = 1;
@ -387,34 +388,24 @@ void QgsVectorLayerSaveAsDialog::accept()
}
else if ( mActionOnExistingFile == QgsVectorFileWriter::CreateOrOverwriteFile && QFile::exists( filename() ) )
{
try
const QList<QgsProviderSublayerDetails> sublayers = QgsProviderRegistry::instance()->querySublayers( filename() );
QStringList layerList;
layerList.reserve( sublayers.size() );
for ( const QgsProviderSublayerDetails &sublayer : sublayers )
{
const QList<QgsOgrDbLayerInfo *> subLayers = QgsOgrLayerItem::subLayers( filename(), format() );
QStringList layerList;
for ( const QgsOgrDbLayerInfo *layer : subLayers )
{
layerList.append( layer->name() );
}
qDeleteAll( subLayers );
if ( layerList.length() > 1 )
{
layerList.sort( Qt::CaseInsensitive );
QMessageBox msgBox;
msgBox.setIcon( QMessageBox::Warning );
msgBox.setWindowTitle( tr( "Overwrite File" ) );
msgBox.setText( tr( "This file contains %1 layers that will be lost!\n" ).arg( QLocale().toString( layerList.length() ) ) );
msgBox.setDetailedText( tr( "The following layers will be permanently lost:\n\n%1" ).arg( layerList.join( "\n" ) ) );
msgBox.setStandardButtons( QMessageBox::Ok | QMessageBox::Cancel );
if ( msgBox.exec() == QMessageBox::Cancel )
return;
}
layerList.append( sublayer.name() );
}
catch ( QgsOgrLayerNotValidException &ex )
if ( layerList.length() > 1 )
{
QMessageBox::critical( this,
tr( "Save Vector Layer As" ),
tr( "Error opening destination file: %1" ).arg( ex.what() ) );
return;
layerList.sort( Qt::CaseInsensitive );
QMessageBox msgBox;
msgBox.setIcon( QMessageBox::Warning );
msgBox.setWindowTitle( tr( "Overwrite File" ) );
msgBox.setText( tr( "This file contains %1 layers that will be lost!\n" ).arg( QLocale().toString( layerList.length() ) ) );
msgBox.setDetailedText( tr( "The following layers will be permanently lost:\n\n%1" ).arg( layerList.join( "\n" ) ) );
msgBox.setStandardButtons( QMessageBox::Ok | QMessageBox::Cancel );
if ( msgBox.exec() == QMessageBox::Cancel )
return;
}
}