Method SetExpressionCommand

Gui/KnobUndoCommand.cpp:677–694

} // RestoreDefaultsCommand::redo

SetExpressionCommand::SetExpressionCommand(const KnobPtr & knob,
                                           bool hasRetVar,
                                           int dimension,
                                           const std::string& expr,
                                           QUndoCommand *parent)
    : QUndoCommand(parent)
    , _knob(knob)
    , _oldExprs()
    , _hadRetVar()
    , _newExpr(expr)
    , _hasRetVar(hasRetVar)
    , _dimension(dimension)
{
    for (int i = 0; i < knob->getDimension(); ++i) {
        _oldExprs.push_back( knob->getExpression(i) );
        _hadRetVar.push_back( knob->isExpressionUsingRetVariable(i) );
    }
}

void
SetExpressionCommand::undo()