void QgsLayerPropertiesWidget::updateSymbolLayerWidget( QgsSymbolLayerV2* layer )
{
if ( stackedWidget->currentWidget() != pageDummy )
{
// stop updating from the original widget
disconnect( stackedWidget->currentWidget(), SIGNAL( changed() ), this, SLOT( emitSignalChanged() ) );
stackedWidget->removeWidget( stackedWidget->currentWidget() );
}
QgsSymbolLayerV2Registry* pReg = QgsSymbolLayerV2Registry::instance();
QString layerType = layer->layerType();
QgsSymbolLayerV2AbstractMetadata* am = pReg->symbolLayerMetadata( layerType );
if ( am )
{
QgsSymbolLayerV2Widget* w = am->createSymbolLayerWidget( mVectorLayer );
if ( w )
{
w->setExpressionContext( mPresetExpressionContext );
if ( mMapCanvas )
w->setMapCanvas( mMapCanvas );
w->setSymbolLayer( layer );
stackedWidget->addWidget( w );
stackedWidget->setCurrentWidget( w );
// start receiving updates from widget
connect( w, SIGNAL( changed() ), this, SLOT( emitSignalChanged() ) );
connect( w, SIGNAL( symbolChanged() ), this, SLOT( reloadLayer() ) );
return;
}
}
// When anything is not right
stackedWidget->setCurrentWidget( pageDummy );
}
void QgsFieldExpressionWidget::setLayer( QgsVectorLayer *layer )
{
if ( mFieldProxyModel->sourceFieldModel()->layer() )
disconnect( mFieldProxyModel->sourceFieldModel()->layer(), SIGNAL( updatedFields() ), this, SLOT( reloadLayer() ) );
mExpressionContext.reset( new QgsExpressionContext() );
mExpressionContext->appendScope( QgsExpressionContextUtils::globalScope() );
mExpressionContext->appendScope( QgsExpressionContextUtils::projectScope() );
if ( layer )
mExpressionContext->appendScope( QgsExpressionContextUtils::layerScope( layer ) );
mFieldProxyModel->sourceFieldModel()->setLayer( layer );
if ( mFieldProxyModel->sourceFieldModel()->layer() )
connect( mFieldProxyModel->sourceFieldModel()->layer(), SIGNAL( updatedFields() ), SLOT( reloadLayer() ), Qt::UniqueConnection );
}
void QgsFieldExpressionWidget::setLayer( QgsVectorLayer *layer )
{
if ( mFieldProxyModel->sourceFieldModel()->layer() )
disconnect( mFieldProxyModel->sourceFieldModel()->layer(), SIGNAL( updatedFields() ), this, SLOT( reloadLayer() ) );
if ( layer )
mExpressionContext = layer->createExpressionContext();
else
mExpressionContext = QgsProject::instance()->createExpressionContext();
mFieldProxyModel->sourceFieldModel()->setLayer( layer );
if ( mFieldProxyModel->sourceFieldModel()->layer() )
connect( mFieldProxyModel->sourceFieldModel()->layer(), SIGNAL( updatedFields() ), SLOT( reloadLayer() ), Qt::UniqueConnection );
}