Merge pull request #4237 from nyalldawson/filter_selected

[needs-docs] Attribute table "show selected features" shows no featureswhen none are selected

Author: nyalldawson

src/app/qgsattributetabledialog.cpp

@@ -144,8 +144,7 @@ QgsAttributeTableDialog::QgsAttributeTableDialog( QgsVectorLayer *layer, QWidget
   }
   else if ( initialMode == QgsAttributeTableFilterModel::ShowSelected )
   {
-    if ( layer->selectedFeatureCount() > 0 )
-      r.setFilterFids( layer->selectedFeatureIds() );
+    r.setFilterFids( layer->selectedFeatureIds() );
   }
   if ( !needsGeom )
     r.setFlags( QgsFeatureRequest::NoGeometry );

src/gui/attributetable/qgsattributetablefiltermodel.cpp

@@ -311,7 +311,7 @@ bool QgsAttributeTableFilterModel::filterAcceptsRow( int sourceRow, const QModel
       return mFilteredFeatures.contains( masterModel()->rowToId( sourceRow ) );
 
     case ShowSelected:
-      return layer()->selectedFeatureIds().isEmpty() || layer()->selectedFeatureIds().contains( masterModel()->rowToId( sourceRow ) );
+      return layer()->selectedFeatureIds().contains( masterModel()->rowToId( sourceRow ) );
 
     case ShowVisible:
       return mFilteredFeatures.contains( masterModel()->rowToId( sourceRow ) );

src/gui/attributetable/qgsdualview.cpp

@@ -245,8 +245,7 @@ void QgsDualView::setFilterMode( QgsAttributeTableFilterModel::FilterMode filter
 
     case QgsAttributeTableFilterModel::ShowSelected:
       connect( masterModel()->layer(), &QgsVectorLayer::selectionChanged, this, &QgsDualView::updateSelectedFeatures );
-      if ( masterModel()->layer()->selectedFeatureCount() > 0 )
-        r.setFilterFids( masterModel()->layer()->selectedFeatureIds() );
+      r.setFilterFids( masterModel()->layer()->selectedFeatureIds() );
       break;
   }
 
@@ -718,10 +717,7 @@ void QgsDualView::updateSelectedFeatures()
   if ( r.filterType() == QgsFeatureRequest::FilterNone && r.filterRect().isNull() )
     return; // already requested all features
 
-  if ( masterModel()->layer()->selectedFeatureCount() > 0 )
-    r.setFilterFids( masterModel()->layer()->selectedFeatureIds() );
-  else
-    r.disableFilter();
+  r.setFilterFids( masterModel()->layer()->selectedFeatureIds() );
   mMasterModel->setRequest( r );
   mMasterModel->loadLayer();
   emit filterChanged();

tests/src/app/testqgsattributetable.cpp

@@ -45,6 +45,7 @@ class TestQgsAttributeTable : public QObject
     void testFieldCalculation();
     void testFieldCalculationArea();
     void testNoGeom();
+    void testSelected();
 
   private:
     QgisApp *mQgisApp = nullptr;
@@ -209,6 +210,43 @@ void TestQgsAttributeTable::testNoGeom()
 
 }
 
+void TestQgsAttributeTable::testSelected()
+{
+  // test attribute table opening in show selected mode
+  QgsSettings s;
+
+  std::unique_ptr< QgsVectorLayer> tempLayer( new QgsVectorLayer( QStringLiteral( "LineString?crs=epsg:3111&field=pk:int&field=col1:double" ), QStringLiteral( "vl" ), QStringLiteral( "memory" ) ) );
+  QVERIFY( tempLayer->isValid() );
+
+  QgsFeature f1( tempLayer->dataProvider()->fields(), 1 );
+  QgsFeature f2( tempLayer->dataProvider()->fields(), 2 );
+  QgsFeature f3( tempLayer->dataProvider()->fields(), 3 );
+  QVERIFY( tempLayer->dataProvider()->addFeatures( QgsFeatureList() << f1 << f2 << f3 ) );
+
+  s.setValue( QStringLiteral( "/qgis/attributeTableBehavior" ), QgsAttributeTableFilterModel::ShowSelected );
+  std::unique_ptr< QgsAttributeTableDialog > dlg( new QgsAttributeTableDialog( tempLayer.get() ) );
+
+  QVERIFY( !dlg->mMainView->masterModel()->layerCache()->cacheGeometry() );
+  //should be nothing - because no selection!
+  QCOMPARE( dlg->mMainView->masterModel()->request().filterType(), QgsFeatureRequest::FilterFids );
+  QVERIFY( dlg->mMainView->masterModel()->request().filterFids().isEmpty() );
+
+  // make a selection
+  tempLayer->selectByIds( QgsFeatureIds() << 1 << 3 );
+  QCOMPARE( dlg->mMainView->masterModel()->request().filterType(), QgsFeatureRequest::FilterFids );
+  QCOMPARE( dlg->mMainView->masterModel()->request().filterFids(), QgsFeatureIds() << 1 << 3 );
+
+  // another test - start with selection when dialog created
+  dlg.reset( new QgsAttributeTableDialog( tempLayer.get() ) );
+  QVERIFY( !dlg->mMainView->masterModel()->layerCache()->cacheGeometry() );
+  QCOMPARE( dlg->mMainView->masterModel()->request().filterType(), QgsFeatureRequest::FilterFids );
+  QCOMPARE( dlg->mMainView->masterModel()->request().filterFids(), QgsFeatureIds() << 1 << 3 );
+  // remove selection
+  tempLayer->removeSelection();
+  QCOMPARE( dlg->mMainView->masterModel()->request().filterType(), QgsFeatureRequest::FilterFids );
+  QVERIFY( dlg->mMainView->masterModel()->request().filterFids().isEmpty() );
+}
+
 
 QGSTEST_MAIN( TestQgsAttributeTable )
 #include "testqgsattributetable.moc"

tests/src/gui/testqgsdualview.cpp

@@ -50,6 +50,7 @@ class TestQgsDualView : public QObject
     void testColumnHeaders();
 
     void testData();
+    void testFilterSelected();
 
     void testSelectAll();
 
@@ -134,6 +135,36 @@ void TestQgsDualView::testData()
   }
 }
 
+void TestQgsDualView::testFilterSelected()
+{
+  QgsFeature feature;
+  QList< QgsFeatureId > ids;
+  QgsFeatureIterator it = mPointsLayer->getFeatures( QgsFeatureRequest().setOrderBy( QgsFeatureRequest::OrderBy() << QgsFeatureRequest::OrderByClause( "Heading" ) ) );
+  while ( it.nextFeature( feature ) )
+    ids << feature.id();
+
+  // select some features
+  QList< QgsFeatureId > selected;
+  selected << ids.at( 1 ) << ids.at( 3 );
+  mPointsLayer->selectByIds( selected.toSet() );
+
+  mDualView->setFilterMode( QgsAttributeTableFilterModel::ShowSelected );
+  QCOMPARE( mDualView->tableView()->model()->rowCount(), 2 );
+
+  int headingIdx = mPointsLayer->fields().lookupField( "Heading" );
+  QgsField fld = mPointsLayer->fields().at( headingIdx );
+  for ( int i = 0; i < selected.count(); ++i )
+  {
+    mPointsLayer->getFeatures( QgsFeatureRequest().setFilterFid( selected.at( i ) ) ).nextFeature( feature );
+    QModelIndex index = mDualView->tableView()->model()->index( i, headingIdx );
+    QCOMPARE( mDualView->tableView()->model()->data( index ).toString(), fld.displayString( feature.attribute( headingIdx ) ) );
+  }
+
+  // select none
+  mPointsLayer->removeSelection();
+  QCOMPARE( mDualView->tableView()->model()->rowCount(), 0 );
+}
+
 void TestQgsDualView::testSelectAll()
 {
   mDualView->setFilterMode( QgsAttributeTableFilterModel::ShowVisible );