void deleteExpression(SExpression *b)
{
if (b == NULL)
return;
deleteExpression(b->left);
deleteExpression(b->right);
free(b);
}
ExpressionWidget::ExpressionWidget(QWidget * parent, bool initial) : QWidget(parent)
{
setupUi(this);
inRangedConfig = false;
// the default search type
searchType = NameSearch;
exprLayout = this->layout();
exprOpFrame->setLayout (createLayout());
exprTermFrame->setLayout (createLayout());
exprConditionFrame->setLayout (createLayout());
exprParamFrame->setLayout (createLayout());
exprParamFrame->setSizePolicy(QSizePolicy::MinimumExpanding,
QSizePolicy::Fixed);
elements = new QList<GuiExprElement*>();
exprOpElem = new ExprOpElement();
exprOpFrame->layout()->addWidget(exprOpElem);
elements->append(exprOpElem);
exprTermElem = new ExprTermsElement();
exprTermFrame->layout()->addWidget(exprTermElem);
elements->append(exprTermElem);
connect (exprTermElem, SIGNAL(currentIndexChanged(int)),
this, SLOT (adjustExprForTermType(int)));
exprCondElem = new ExprConditionElement(searchType);
exprConditionFrame->layout()->addWidget(exprCondElem);
elements->append(exprCondElem);
connect (exprCondElem, SIGNAL (currentIndexChanged(int)),
this, SLOT (adjustExprForConditionType(int)));
exprParamElem= new ExprParamElement(searchType);
exprParamFrame->layout()->addWidget(exprParamElem);
elements->append(exprParamElem);
// set up the default search: a search on name
adjustExprForTermType(searchType);
isFirst = initial;
deleteExprButton ->setVisible(!isFirst);
exprOpElem ->setVisible(!isFirst);
exprTermFrame ->show();
exprConditionFrame ->show();
exprParamFrame ->show();
// connect the delete button signal
connect (deleteExprButton, SIGNAL (clicked()),
this, SLOT(deleteExpression()));
this->show();
}
void AdvancedSearchDialog::reset()
{
ExpressionWidget *expr;
while (!expressions->isEmpty())
{
expr = expressions->takeLast();
deleteExpression(expr);
}
// now add a new default expressions
addNewExpression();
}
void deleteExpression(struct Expression *expr) {
if (expr == NULL) {
return;
}
if (expr->word) {
free(expr->word);
}
deleteExpression(expr->pred);
deleteExpression(expr->tanru_base);
deleteExpression(expr->tanru_desc);
deleteExpression(expr->x1);
deleteExpression(expr->x2);
deleteExpression(expr->x3);
deleteExpression(expr->x4);
deleteExpression(expr->x5);
free(expr);
}