[Fix #7849] Layer properties > fields delete correct field

src/app/qgsfieldsproperties.cpp

@@ -191,7 +191,7 @@ QgsFieldsProperties::QgsFieldsProperties( QgsVectorLayer *layer, QWidget* parent
   attrTreeLayout->setMargin( 0 );
   attrListLayout->setMargin( 0 );
   mAttributesTree = new QgsAttributesTree( mAttributesTreeFrame );
-  mAttributesList = new QgsAttributesList( mAttributesListFrame );
+  mAttributesList = new QTableWidget( mAttributesListFrame );
   attrTreeLayout->addWidget( mAttributesTree );
   attrListLayout->addWidget( mAttributesList );
   mAttributesTreeFrame->setLayout( attrTreeLayout );
@@ -536,14 +536,7 @@ void QgsFieldsProperties::attributeAdded( int idx )
 
 void QgsFieldsProperties::attributeDeleted( int idx )
 {
-  for ( int i = 0; i < mAttributesList->rowCount(); i++ )
-  {
-    if ( mAttributesList->item( i, 0 )->text().toInt() == idx )
-    {
-      mAttributesList->removeRow( i );
-      break;
-    }
-  }
+  mAttributesList->removeRow( idx );
 }
 
 void QgsFieldsProperties::addAttribute()
@@ -580,24 +573,6 @@ bool QgsFieldsProperties::addAttribute( const QgsField &field )
   }
 }
 
-void QgsFieldsProperties::deleteAttribute()
-{
-  QList<QTableWidgetItem*> items = mAttributesList->selectedItems();
-  QList<int> idxs;
-
-  for ( QList<QTableWidgetItem*>::const_iterator it = items.begin(); it != items.end(); it++ )
-  {
-    if (( *it )->column() == 0 )
-      idxs << ( *it )->text().toInt();
-  }
-  for ( QList<int>::const_iterator it = idxs.begin(); it != idxs.end(); it++ )
-  {
-    mLayer->beginEditCommand( tr( "Deleted attribute" ) );
-    mLayer->deleteAttribute( *it );
-    mLayer->endEditCommand();
-  }
-}
-
 void QgsFieldsProperties::editingToggled()
 {
   if ( !mLayer->isEditable() )
@@ -626,20 +601,15 @@ void QgsFieldsProperties::on_mAddAttributeButton_clicked()
 
 void QgsFieldsProperties::on_mDeleteAttributeButton_clicked()
 {
-  QList<QTableWidgetItem*> items = mAttributesList->selectedItems();
-  QList<int> idxs;
-
-  for ( QList<QTableWidgetItem*>::const_iterator it = items.begin(); it != items.end(); it++ )
+  QSet<int> attrs;
+  foreach ( QTableWidgetItem* item, mAttributesList->selectedItems() )
   {
-    if (( *it )->column() == 0 )
-      idxs << ( *it )->text().toInt();
-  }
-  for ( QList<int>::const_iterator it = idxs.begin(); it != idxs.end(); it++ )
-  {
-    mLayer->beginEditCommand( tr( "Deleted attribute" ) );
-    mLayer->deleteAttribute( *it );
-    mLayer->endEditCommand();
+    attrs << mAttributesList->row( item );
   }
+
+  mLayer->beginEditCommand( tr( "Deleted attribute" ) );
+  mLayer->deleteAttributes( attrs.toList() );
+  mLayer->endEditCommand();
 }
 
 void QgsFieldsProperties::updateButtons()

src/app/qgsfieldsproperties.h

@@ -24,20 +24,6 @@
 #include "qgsvectorlayer.h"
 #include "ui_qgsfieldspropertiesbase.h"
 
-class QgsAttributesList : public QTableWidget
-{
-    Q_OBJECT
-  public:
-    QgsAttributesList( QWidget* parent = 0 )
-        : QTableWidget( parent )
-    {}
-
-  protected:
-    // virtual void dragMoveEvent( QDragMoveEvent *event );
-    // QMimeData *mimeData( const QList<QTableWidgetItem *> items ) const;
-    // Qt::DropActions supportedDropActions() const;
-};
-
 class QgsAttributesTree : public QTreeWidget
 {
     Q_OBJECT
@@ -70,11 +56,6 @@ class QgsFieldsProperties : public QWidget, private Ui_QgsFieldsPropertiesBase
     @return false in case of a name conflict, true in case of success */
     bool addAttribute( const QgsField &field );
 
-    /**Deletes an attribute (but does not commit it)
-      @param name attribute name
-      @return false in case of a non-existing attribute.*/
-    bool deleteAttribute( int attr );
-
     /**Creates the a proper item to save from the tree
      * @param item The tree widget item to process
      * @return A widget definition. Containing another container or the final field
@@ -103,7 +84,6 @@ class QgsFieldsProperties : public QWidget, private Ui_QgsFieldsPropertiesBase
     void on_mEditorLayoutComboBox_currentIndexChanged( int index );
 
     void addAttribute();
-    void deleteAttribute();
     void attributeAdded( int idx );
     void attributeDeleted( int idx );
     void attributeTypeDialog();
@@ -123,7 +103,7 @@ class QgsFieldsProperties : public QWidget, private Ui_QgsFieldsPropertiesBase
   protected:
     QgsVectorLayer* mLayer;
     QgsAttributesTree* mAttributesTree;
-    QgsAttributesList* mAttributesList;
+    QTableWidget* mAttributesList;
 
     QMap<int, bool> mFieldEditables;
     QMap<int, QgsVectorLayer::ValueRelationData> mValueRelationData;

src/core/qgsvectorlayer.cpp

@@ -2477,6 +2477,9 @@ bool QgsVectorLayer::deleteAttributes( QList<int> attrs )
 {
   bool deleted = false;
 
+  // Remove multiple occurences of same attribute
+  attrs = attrs.toSet().toList();
+
   qSort( attrs.begin(), attrs.end(), qGreater<int>() );
 
   foreach ( int attr, attrs )