C++ (Cpp) QgsLayerTreeLayer::setLayerName Examples

Example #1

File: qgslayertreemodel.cpp Project: saintbae/QGIS

bool QgsLayerTreeModel::setData( const QModelIndex& index, const QVariant& value, int role )
{
  QgsLayerTreeModelLegendNode *sym = index2symnode( index );
  if ( sym )
  {
    if ( role == Qt::CheckStateRole && !testFlag( AllowSymbologyChangeState ) )
      return false;
    bool res = sym->setData( value, role );
    if ( res )
      emit dataChanged( index, index );
    return res;
  }

  QgsLayerTreeNode* node = index2node( index );
  if ( !node )
    return QgsLayerTreeModel::setData( index, value, role );

  if ( role == Qt::CheckStateRole )
  {
    if ( !testFlag( AllowNodeChangeVisibility ) )
      return false;

    if ( QgsLayerTree::isLayer( node ) )
    {
      QgsLayerTreeLayer* layer = QgsLayerTree::toLayer( node );
      layer->setVisible(( Qt::CheckState )value.toInt() );
      return true;
    }

    if ( QgsLayerTree::isGroup( node ) )
    {
      QgsLayerTreeGroup* group = QgsLayerTree::toGroup( node );
      group->setVisible(( Qt::CheckState )value.toInt() );
      return true;
    }

    return true;
  }
  else if ( role == Qt::EditRole )
  {
    if ( !testFlag( AllowNodeRename ) )
      return false;

    if ( QgsLayerTree::isLayer( node ) )
    {
      QgsLayerTreeLayer* layer = QgsLayerTree::toLayer( node );
      layer->setLayerName( value.toString() );
      emit dataChanged( index, index );
    }
    else if ( QgsLayerTree::isGroup( node ) )
    {
      QgsLayerTree::toGroup( node )->setName( value.toString() );
      emit dataChanged( index, index );
    }
  }

  return QAbstractItemModel::setData( index, value, role );
}