Fix invalid attributes dialog on copy to another layer

src/app/qgisapp.cpp

@@ -87,6 +87,7 @@
 #include "qgssourceselectproviderregistry.h"
 #include "qgssourceselectprovider.h"
 #include "qgsprovidermetadata.h"
+#include "qgsfixattributedialog.h"
 
 #include "qgsanalysis.h"
 #include "qgsgeometrycheckregistry.h"
@@ -9588,6 +9589,47 @@ void QgisApp::pasteFromClipboard( QgsMapLayer *destinationLayer )
   // now create new feature using pasted feature as a template. This automatically handles default
   // values and field constraints
   QgsFeatureList newFeatures {QgsVectorLayerUtils::createFeatures( pasteVectorLayer, newFeaturesDataList, &context )};
+
+  // check constraints
+  QgsFeatureList validFeatures = newFeatures;
+  QgsFeatureList invalidFeatures;
+  for ( const QgsFeature &f : qgis::as_const( validFeatures ) )
+  {
+    for ( int idx = 0; idx < pasteVectorLayer->fields().count(); ++idx )
+    {
+      QStringList errors;
+      if ( !QgsVectorLayerUtils::validateAttribute( pasteVectorLayer, f, idx, errors, QgsFieldConstraints::ConstraintStrengthHard, QgsFieldConstraints::ConstraintOriginNotSet ) )
+      {
+        invalidFeatures << f;
+        validFeatures.removeOne( f );
+        break;
+      }
+    }
+  }
+
+  if ( !invalidFeatures.isEmpty() )
+  {
+    newFeatures.clear();
+
+    QgsFixAttributeDialog *dialog = new QgsFixAttributeDialog( pasteVectorLayer, invalidFeatures, this );
+    int feedback = dialog->exec();
+
+    if ( feedback == QgsFixAttributeDialog::VanishAll )
+    {
+      //vanish all
+    }
+    else if ( feedback == QgsFixAttributeDialog::CopyValid )
+    {
+      //copy valid and fixed, vanish unfixed
+      newFeatures << validFeatures << dialog->fixedFeatures();
+    }
+    else if ( feedback == QgsFixAttributeDialog::CopyAll )
+    {
+      //copy all, even unfixed
+      newFeatures << validFeatures << dialog->fixedFeatures() << dialog->unfixedFeatures();
+    }
+  }
+
   pasteVectorLayer->addFeatures( newFeatures );
   QgsFeatureIds newIds;
   newIds.reserve( newFeatures.size() );
@@ -9600,8 +9642,8 @@ void QgisApp::pasteFromClipboard( QgsMapLayer *destinationLayer )
   pasteVectorLayer->endEditCommand();
   pasteVectorLayer->updateExtents();
 
-  int nCopiedFeatures = features.count();
-  Qgis::MessageLevel level = ( nCopiedFeatures == 0 || nCopiedFeatures < nTotalFeatures || invalidGeometriesCount > 0 ) ? Qgis::Warning : Qgis::Info;
+  int nCopiedFeatures = newFeatures.count();
+  Qgis::MessageLevel level = ( nCopiedFeatures == 0 || invalidGeometriesCount > 0 ) ? Qgis::Warning : Qgis::Info;
   QString message;
   if ( nCopiedFeatures == 0 )
   {

src/gui/CMakeLists.txt

@@ -300,6 +300,7 @@ SET(QGIS_GUI_SRCS
   qgsfeatureselectiondlg.cpp
   qgsfieldcombobox.cpp
   qgsfieldexpressionwidget.cpp
+  qgsfixattributedialog.cpp
   qgsfeaturelistcombobox.cpp
   qgsfieldvalidator.cpp
   qgsfieldvalueslineedit.cpp
@@ -511,6 +512,7 @@ SET(QGIS_GUI_HDRS
   qgsfilewidget.h
   qgsfilterlineedit.h
   qgsfindfilesbypatternwidget.h
+  qgsfixattributedialog.h
   qgsfloatingwidget.h
   qgsfocuswatcher.h
   qgsfontbutton.h

src/gui/qgsfixattributedialog.cpp

@@ -0,0 +1,134 @@
+/***************************************************************************
+    qgsfixattributedialog.cpp
+    ---------------------
+    begin                : January 2020
+    copyright            : (C) 2020 by David Signer
+    email                : david at opengis dot ch
+ ***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+#include "qgsfixattributedialog.h"
+
+#include "qgsattributeform.h"
+#include "qgsapplication.h"
+
+#include <QtWidgets/QPushButton>
+
+QgsFixAttributeDialog::QgsFixAttributeDialog( QgsVectorLayer *vl, QgsFeatureList &features, QWidget *parent )
+  : QDialog( parent )
+  , mFeatures( features )
+{
+  init( vl );
+}
+
+void QgsFixAttributeDialog::init( QgsVectorLayer *layer )
+{
+  QgsAttributeEditorContext context;
+  setWindowTitle( tr( "%1 - Fix Pastet Features" ).arg( layer->name() ) );
+  setLayout( new QGridLayout() );
+  layout()->setMargin( 0 );
+  context.setFormMode( QgsAttributeEditorContext::StandaloneDialog );
+
+  mUnfixedFeatures = mFeatures;
+  mCurrentFeature = mFeatures.begin();
+
+  QGridLayout *infoLayout = new QGridLayout();
+  QWidget *infoBox = new QWidget();
+  infoBox->setLayout( infoLayout );
+  layout()->addWidget( infoBox );
+
+  mDescription = new QLabel( descriptionText() );
+  mDescription->setVisible( mFeatures.count() > 1 );
+  infoLayout->addWidget( mDescription );
+  mProgressBar = new QProgressBar();
+  mProgressBar->setOrientation( Qt::Horizontal );
+  mProgressBar->setRange( 0, mFeatures.count() );
+  mProgressBar->setVisible( mFeatures.count() > 1 );
+  infoLayout->addWidget( mProgressBar );
+  QgsFeature feature;
+  mAttributeForm = new QgsAttributeForm( layer, *mCurrentFeature, context, this );
+  mAttributeForm->setMode( QgsAttributeEditorContext::SingleEditMode );
+  mAttributeForm->disconnectButtonBox();
+  layout()->addWidget( mAttributeForm );
+
+  QDialogButtonBox *buttonBox = mAttributeForm->findChild<QDialogButtonBox *>();
+  QPushButton *cancelAllBtn = new QPushButton( tr( "Cancel all" ) );
+  QPushButton *cancelAllInvalidBtn = new QPushButton( tr( "Cancel all invalid" ) );
+  QPushButton *storeAllInvalidBtn = new QPushButton( tr( "Store all (even invalid)" ) );
+  if ( mFeatures.count() > 1 )
+  {
+    buttonBox->addButton( cancelAllBtn, QDialogButtonBox::ActionRole );
+    buttonBox->addButton( cancelAllInvalidBtn, QDialogButtonBox::ActionRole );
+    connect( cancelAllBtn, &QAbstractButton::clicked, this, [ = ]()
+    {
+      done( VanishAll );
+    } );
+    connect( cancelAllInvalidBtn, &QAbstractButton::clicked, this, [ = ]()
+    {
+      done( CopyValid );
+    } );
+    buttonBox->button( QDialogButtonBox::Cancel )->setText( tr( "Skip" ) );
+  }
+  else
+  {
+    storeAllInvalidBtn->setText( tr( "Store anyway" ) );
+  }
+  buttonBox->addButton( storeAllInvalidBtn, QDialogButtonBox::ActionRole );
+  connect( storeAllInvalidBtn, &QAbstractButton::clicked, this, [ = ]()
+  {
+    done( CopyAll );
+  } );
+  connect( buttonBox, &QDialogButtonBox::rejected, this, &QgsFixAttributeDialog::reject );
+  connect( buttonBox, &QDialogButtonBox::accepted, this, &QgsFixAttributeDialog::accept );
+  connect( layer, &QObject::destroyed, this, &QWidget::close );
+
+  focusNextChild();
+}
+
+QString QgsFixAttributeDialog::descriptionText()
+{
+  return tr( "%1 of %2 features processed (%3 fixed, %4 skipped)" ).arg( mCurrentFeature - mFeatures.begin() ).arg( mFeatures.count() ).arg( mFixedFeatures.count() ).arg( mCurrentFeature - mFeatures.begin() - mFixedFeatures.count() );
+}
+
+void QgsFixAttributeDialog::accept()
+{
+  mAttributeForm->save();
+  mFixedFeatures << mAttributeForm->feature();
+  mUnfixedFeatures.removeOne( *mCurrentFeature );
+
+  //next feature
+  ++mCurrentFeature;
+  if ( mCurrentFeature != mFeatures.end() )
+  {
+    mAttributeForm->setFeature( *mCurrentFeature );
+  }
+  else
+  {
+    done( CopyValid );
+  }
+
+  mProgressBar->setValue( mCurrentFeature - mFeatures.begin() );
+  mDescription->setText( descriptionText() );
+}
+
+void QgsFixAttributeDialog::reject()
+{
+  //next feature
+  ++mCurrentFeature;
+  if ( mCurrentFeature != mFeatures.end() )
+  {
+    mAttributeForm->setFeature( *mCurrentFeature );
+  }
+  else
+  {
+    done( CopyValid );
+  }
+
+  mProgressBar->setValue( mCurrentFeature - mFeatures.begin() );
+  mDescription->setText( descriptionText() );
+}

src/gui/qgsfixattributedialog.h

@@ -0,0 +1,87 @@
+/***************************************************************************
+    qgsfixattributedialog.h
+    ---------------------
+    begin                : January 2020
+    copyright            : (C) 2020 by David Signer
+    email                : david at opengis dot ch
+ ***************************************************************************
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef QGSFIXATTRIBUTEDIALOG_H
+#define QGSFIXATTRIBUTEDIALOG_H
+
+#include "qgsattributeeditorcontext.h"
+#include "qgis_sip.h"
+#include "qgsattributeform.h"
+#include "qgstrackedvectorlayertools.h"
+
+#include <QDialog>
+#include <QGridLayout>
+#include <QProgressBar>
+#include "qgis_gui.h"
+
+/**
+ * \ingroup gui
+ * \class QgsFixAttributeDialog
+ * \brief Dialog to fix a list of invalid feature regarding constraints
+ * \since 3.12
+ */
+
+class GUI_EXPORT QgsFixAttributeDialog : public QDialog
+{
+    Q_OBJECT
+
+  public:
+
+    /**
+     * Feedback code on closing the dialog
+     */
+    enum Feedback
+    {
+      VanishAll,  //!< Feedback to cancel copy of all features (even valid ones)
+      CopyValid,  //!< Feedback to copy the valid features and vanishe the invalid ones
+      CopyAll     //!< Feedback to copy all features, no matter if valid or invalid
+    };
+
+    /**
+     * Constructor for QgsFixAttributeDialog
+     */
+    QgsFixAttributeDialog( QgsVectorLayer *vl, QgsFeatureList &features, QWidget *parent SIP_TRANSFERTHIS = nullptr );
+
+    /**
+     * Returns fixed features
+     */
+    QgsFeatureList fixedFeatures() { return mFixedFeatures; }
+
+    /**
+     * Returns unfixed features (canceled or not handeled)
+     */
+    QgsFeatureList unfixedFeatures() { return mUnfixedFeatures; }
+
+  public slots:
+    void accept() override;
+    void reject() override;
+
+  private:
+    void init( QgsVectorLayer *layer );
+    QString descriptionText();
+
+    QgsFeatureList mFeatures;
+    QgsFeatureList::iterator mCurrentFeature;
+
+    QgsFeatureList mFixedFeatures;
+    QgsFeatureList mUnfixedFeatures;
+
+    QgsAttributeForm *mAttributeForm = nullptr;
+    QProgressBar *mProgressBar = nullptr;
+    QLabel *mDescription = nullptr;
+};
+
+#endif // QGSFIXATTRIBUTEDIALOG_H
+