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Don't crash when project has no layers

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This only crashes when Qt is built in
debug mode because there is an assert
in the item model class that checks for
index range validity.
This commit is contained in:
Alessandro Pasotti 2017-12-01 18:23:19 +01:00
parent 19b062c304
commit 31c79da523
1 changed files with 12 additions and 9 deletions
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21
src/core/qgsmaplayermodel.cpp
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@ -154,17 +154,20 @@ void QgsMapLayerModel::removeLayers( const QStringList &layerIds )
void QgsMapLayerModel::addLayers( const QList<QgsMapLayer *> &layers )
{
int offset = 0;
if ( mAllowEmpty )
offset++;
beginInsertRows( QModelIndex(), mLayers.count() + offset, mLayers.count() + layers.count() - 1 + offset );
Q_FOREACH ( QgsMapLayer *layer, layers )
if ( layers.count( ) )
{
mLayers.append( layer );
mLayersChecked.insert( layer->id(), Qt::Unchecked );
int offset = 0;
if ( mAllowEmpty )
offset++;
beginInsertRows( QModelIndex(), mLayers.count() + offset, mLayers.count() + layers.count() - 1 + offset );
Q_FOREACH ( QgsMapLayer *layer, layers )
{
mLayers.append( layer );
mLayersChecked.insert( layer->id(), Qt::Unchecked );
}
endInsertRows();
}
endInsertRows();
}
QModelIndex QgsMapLayerModel::index( int row, int column, const QModelIndex &parent ) const