[FEATURE] attribute editing improvements:

- refactor attribute dialog calls to QgsFeatureAttribute
- add QgsVectorLayer::featureAdded signal
- improve interactive attribute editing in table (adding/deleting
  features, attribute update)
- allow adding of geometryless features
- fix attribute undo/redo

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@14729 c8812cc2-4d05-0410-92ff-de0c093fc19c

src/app/attributetable/qgsattributetabledelegate.cpp

@@ -52,6 +52,19 @@ int QgsAttributeTableDelegate::fieldIdx( const QModelIndex &index ) const
   return -1;
 }
 
+int QgsAttributeTableDelegate::featureId( const QModelIndex &index ) const
+{
+  const QgsAttributeTableModel *tm = qobject_cast<const QgsAttributeTableModel *>( index.model() );
+  if ( tm )
+    return tm->rowToId( index.row() );
+
+  const QgsAttributeTableFilterModel *fm = dynamic_cast<const QgsAttributeTableFilterModel *>( index.model() );
+  if ( fm )
+    return fm->tableModel()->rowToId( index.row() );
+
+  return -1;
+}
+
 
 QWidget *QgsAttributeTableDelegate::createEditor(
   QWidget *parent,
@@ -87,11 +100,16 @@ void QgsAttributeTableDelegate::setModelData( QWidget *editor, QAbstractItemMode
   if ( vl == NULL )
     return;
 
+  int idx = fieldIdx( index );
+  int fid = featureId( index );
+
   QVariant value;
-  if ( !QgsAttributeEditor::retrieveValue( editor, vl, fieldIdx( index ), value ) )
+  if ( !QgsAttributeEditor::retrieveValue( editor, vl, idx, value ) )
     return;
 
-  model->setData( index, value );
+  vl->beginEditCommand( tr( "Attribute changed" ) );
+  vl->changeAttributeValue( fid, idx, value, true );
+  vl->endEditCommand();
 }
 
 void QgsAttributeTableDelegate::setEditorData( QWidget *editor, const QModelIndex &index ) const

src/app/attributetable/qgsattributetabledelegate.h

@@ -32,6 +32,7 @@ class QgsAttributeTableDelegate : public QItemDelegate
 
     QgsVectorLayer *layer( const QAbstractItemModel *model ) const;
     int fieldIdx( const QModelIndex &index ) const;
+    int featureId( const QModelIndex &index ) const;
 
   public:
     /** Constructor

src/app/attributetable/qgsattributetabledialog.cpp

@@ -34,6 +34,7 @@
 #include "qgslogger.h"
 #include "qgsmapcanvas.h"
 #include "qgsfieldcalculator.h"
+#include "qgsfeatureaction.h"
 
 class QgsAttributeTableDock : public QDockWidget
 {
@@ -99,13 +100,16 @@ QgsAttributeTableDialog::QgsAttributeTableDialog( QgsVectorLayer *theLayer, QWid
   bool canDeleteFeatures = mLayer->dataProvider()->capabilities() & QgsVectorDataProvider::DeleteFeatures;
   bool canAddAttributes = mLayer->dataProvider()->capabilities() & QgsVectorDataProvider::AddAttributes;
   bool canDeleteAttributes = mLayer->dataProvider()->capabilities() & QgsVectorDataProvider::DeleteAttributes;
+  bool canAddFeatures = mLayer->dataProvider()->capabilities() & QgsVectorDataProvider::AddFeatures;
   mToggleEditingButton->setCheckable( true );
   mToggleEditingButton->setChecked( mLayer->isEditable() );
   mToggleEditingButton->setEnabled( canChangeAttributes && !mLayer->isReadOnly() );
   mOpenFieldCalculator->setEnabled( canChangeAttributes && mLayer->isEditable() );
   mDeleteSelectedButton->setEnabled( canDeleteFeatures && mLayer->isEditable() );
   mAddAttribute->setEnabled( canAddAttributes && mLayer->isEditable() );
   mRemoveAttribute->setEnabled( canDeleteAttributes && mLayer->isEditable() );
+  mAddFeature->setEnabled( canAddFeatures && mLayer->isEditable() && mLayer->geometryType() == QGis::NoGeometry );
+  mAddFeature->setHidden( !canAddFeatures || mLayer->geometryType() != QGis::NoGeometry );
 
   // info from table to application
   connect( this, SIGNAL( editingToggled( QgsMapLayer * ) ), QgisApp::instance(), SLOT( toggleEditing( QgsMapLayer * ) ) );
@@ -114,6 +118,7 @@ QgsAttributeTableDialog::QgsAttributeTableDialog( QgsVectorLayer *theLayer, QWid
   connect( mLayer, SIGNAL( editingStopped() ), this, SLOT( editingToggled() ) );
 
   connect( searchButton, SIGNAL( clicked() ), this, SLOT( search() ) );
+  connect( mAddFeature, SIGNAL( clicked() ), this, SLOT( addFeature() ) );
 
   connect( mLayer, SIGNAL( selectionChanged() ), this, SLOT( updateSelectionFromLayer() ) );
   connect( mLayer, SIGNAL( layerDeleted() ), this, SLOT( close() ) );
@@ -674,10 +679,12 @@ void QgsAttributeTableDialog::editingToggled()
   bool canDeleteFeatures = mLayer->dataProvider()->capabilities() & QgsVectorDataProvider::DeleteFeatures;
   bool canAddAttributes = mLayer->dataProvider()->capabilities() & QgsVectorDataProvider::AddAttributes;
   bool canDeleteAttributes = mLayer->dataProvider()->capabilities() & QgsVectorDataProvider::DeleteAttributes;
+  bool canAddFeatures = mLayer->dataProvider()->capabilities() & QgsVectorDataProvider::AddFeatures;
   mOpenFieldCalculator->setEnabled( canChangeAttributes && mLayer->isEditable() );
   mDeleteSelectedButton->setEnabled( canDeleteFeatures && mLayer->isEditable() );
   mAddAttribute->setEnabled( canAddAttributes && mLayer->isEditable() );
   mRemoveAttribute->setEnabled( canDeleteAttributes && mLayer->isEditable() );
+  mAddFeature->setEnabled( canAddFeatures && mLayer->isEditable() && mLayer->geometryType() == QGis::NoGeometry );
 
   // (probably reload data if user stopped editing - possible revert)
   mModel->reload( mModel->index( 0, 0 ), mModel->index( mModel->rowCount(), mModel->columnCount() ) );
@@ -775,9 +782,18 @@ void QgsAttributeTableDialog::on_mRemoveAttribute_clicked()
 void QgsAttributeTableDialog::on_mOpenFieldCalculator_clicked()
 {
   QgsFieldCalculator calc( mLayer );
-  if ( calc.exec() == QDialog::Accepted )
+  calc.exec();
+}
+
+void QgsAttributeTableDialog::addFeature()
+{
+  if ( !mLayer->isEditable() )
+    return;
+
+  QgsFeature f;
+  QgsFeatureAction action( tr( "Geometryless feature added" ), f, mLayer, -1, this );
+  if ( action.addFeature() )
   {
-    // update model - a field has been added or updated
     mModel->reload( mModel->index( 0, 0 ), mModel->index( mModel->rowCount(), mModel->columnCount() ) );
   }
 }

src/app/attributetable/qgsattributetabledialog.h

@@ -151,6 +151,11 @@ class QgsAttributeTableDialog : public QDialog, private Ui::QgsAttributeTableDia
      */
     void on_mDeleteSelectedButton_clicked();
 
+    /**
+     * add feature
+     */
+    void addFeature();
+
     void on_mHelpButton_clicked() { QgsContextHelp::run( metaObject()->className() ); }
 
   signals:

src/app/attributetable/qgsattributetablememorymodel.cpp

@@ -60,7 +60,6 @@ bool QgsAttributeTableMemoryModel::featureAtId( int fid )
   }
 }
 
-#if 0
 void QgsAttributeTableMemoryModel::featureDeleted( int fid )
 {
   QgsDebugMsg( "entered." );
@@ -76,7 +75,6 @@ void QgsAttributeTableMemoryModel::featureAdded( int fid )
   mFeatureMap.insert( fid, f );
   QgsAttributeTableModel::featureAdded( fid );
 }
-#endif
 
 void QgsAttributeTableMemoryModel::layerDeleted()
 {
@@ -89,5 +87,5 @@ void QgsAttributeTableMemoryModel::attributeValueChanged( int fid, int idx, cons
 {
   QgsDebugMsg( "entered." );
   mFeatureMap[fid].changeAttribute( idx, value );
-  reload( index( 0, 0 ), index( rowCount(), columnCount() ) );
+  QgsAttributeTableModel::attributeValueChanged( fid, idx, value );
 }

src/app/attributetable/qgsattributetablememorymodel.h

@@ -40,7 +40,6 @@ class QgsAttributeTableMemoryModel : public QgsAttributeTableModel
     QgsAttributeTableMemoryModel( QgsVectorLayer *theLayer );
 
   protected slots:
-#if 0
     /**
      * Launched when a feature has been deleted
      * @param fid feature id
@@ -51,7 +50,6 @@ class QgsAttributeTableMemoryModel : public QgsAttributeTableModel
      * @param fid feature id
      */
     virtual void featureAdded( int fid );
-#endif
     /**
      * Launched when layer has been deleted
      */