void QgsPropertyOverrideButton::showExpressionDialog()
{
QgsExpressionContext context = mExpressionContextGenerator ? mExpressionContextGenerator->createExpressionContext() : QgsExpressionContext();
QgsExpressionBuilderDialog d( const_cast<QgsVectorLayer *>( mVectorLayer ), mProperty.asExpression(), this, QStringLiteral( "generic" ), context );
if ( d.exec() == QDialog::Accepted )
{
mExpressionString = d.expressionText().trimmed();
mProperty.setExpressionString( mExpressionString );
mProperty.setTransformer( nullptr );
setActivePrivate( !mExpressionString.isEmpty() );
updateGui();
emit changed();
}
activateWindow(); // reset focus to parent window
}
void QgsPropertyOverrideButton::mouseReleaseEvent( QMouseEvent *event )
{
// Ctrl-click to toggle activated state
if ( ( event->modifiers() & ( Qt::ControlModifier ) )
|| event->button() == Qt::RightButton )
{
setActivePrivate( !mProperty.isActive() );
updateGui();
emit changed();
event->ignore();
return;
}
// pass to default behavior
QToolButton::mousePressEvent( event );
}
void QgsPropertyOverrideButton::showExpressionDialog()
{
QgsExpressionContext context = mExpressionContextGenerator ? mExpressionContextGenerator->createExpressionContext() : QgsExpressionContext();
// build sensible initial expression text - see https://issues.qgis.org/issues/18638
QString currentExpression = ( mProperty.propertyType() == QgsProperty::StaticProperty && !mProperty.staticValue().isValid() ) ? QString()
: mProperty.asExpression();
QgsExpressionBuilderDialog d( const_cast<QgsVectorLayer *>( mVectorLayer ), currentExpression, this, QStringLiteral( "generic" ), context );
d.setExpectedOutputFormat( mInputDescription );
if ( d.exec() == QDialog::Accepted )
{
mExpressionString = d.expressionText().trimmed();
mProperty.setExpressionString( mExpressionString );
mProperty.setTransformer( nullptr );
setActivePrivate( !mExpressionString.isEmpty() );
updateSiblingWidgets( isActive() );
updateGui();
emit changed();
}
activateWindow(); // reset focus to parent window
}
void QgsPropertyOverrideButton::menuActionTriggered( QAction *action )
{
if ( action == mActionActive )
{
setActivePrivate( mActionActive->data().toBool() );
updateGui();
emit changed();
}
else if ( action == mActionDescription )
{
showDescriptionDialog();
}
else if ( action == mActionExpDialog )
{
showExpressionDialog();
}
else if ( action == mActionExpression )
{
mProperty.setExpressionString( mExpressionString );
mProperty.setTransformer( nullptr );
setActivePrivate( true );
updateSiblingWidgets( isActive() );
updateGui();
emit changed();
}
else if ( action == mActionCopyExpr )
{
QApplication::clipboard()->setText( mExpressionString );
}
else if ( action == mActionPasteExpr )
{
QString exprString = QApplication::clipboard()->text();
if ( !exprString.isEmpty() )
{
mExpressionString = exprString;
mProperty.setExpressionString( mExpressionString );
mProperty.setTransformer( nullptr );
setActivePrivate( true );
updateSiblingWidgets( isActive() );
updateGui();
emit changed();
}
}
else if ( action == mActionClearExpr )
{
setActivePrivate( false );
mProperty.setStaticValue( QVariant() );
mProperty.setTransformer( nullptr );
mExpressionString.clear();
updateSiblingWidgets( isActive() );
updateGui();
emit changed();
}
else if ( action == mActionAssistant )
{
showAssistant();
}
else if ( action == mActionCreateAuxiliaryField )
{
emit createAuxiliaryField();
}
else if ( mFieldsMenu->actions().contains( action ) ) // a field name clicked
{
if ( action->isEnabled() )
{
if ( mFieldName != action->text() )
{
mFieldName = action->data().toString();
}
mProperty.setField( mFieldName );
mProperty.setTransformer( nullptr );
setActivePrivate( true );
updateSiblingWidgets( isActive() );
updateGui();
emit changed();
}
}
else if ( mVariablesMenu->actions().contains( action ) ) // a variable name clicked
{
if ( mExpressionString != action->text().prepend( "@" ) )
{
mExpressionString = action->data().toString().prepend( "@" );
}
mProperty.setExpressionString( mExpressionString );
mProperty.setTransformer( nullptr );
setActivePrivate( true );
updateSiblingWidgets( isActive() );
updateGui();
emit changed();
}
}
