Searching a QTable widget items using wild cards!

Lasith

IN my qt c++ application I have several items in a qtablewidget. A lineedit along with a button is used by me inorder to search the qtablewidget when a particular word is given to the line edit and the search button is clicked! FOllowing is my code!

bool found=false;
    QString Line= ui->search->text();

    for(int i=0;i<100;i++){
        if(ui->tableWidget->item(i,0)->text()== Line){
            found = true;
            break;
        }
    }
    if(found){
        ui->tableWidget->clear();
        ui->tableWidget->setItem(0,0,new QTableWidgetItem(Line));
    }
    else{
        QMessageBox::warning(this, tr("Application Name"), tr("The word you are searching does not exist!") );
}

This code works if an exact word in the table widget is given but if I use

ui->tableWidget->item(i,0)->text()=="%"+ Line+"%"

it won't work for the wild card scenario so that I can search even part of a word is given! How can I correct this issue?

Devopia53

@Lasith

You can use QAbstractItemModel to solve the problem easily.

like this:

#include <QAbstractItemModel>
#include <QModelIndexList>
[...]
auto    model = ui->tableWidget->model();
auto    items = model->match(
            model->index(0, 0),
            Qt::DisplayRole,
            QVariant::fromValue(QString("*%1*").arg(Line)),
            1, // -1: for all matching items
            Qt::MatchWildcard);
if (!items.isEmpty()) {
    ui->tableWidget->clear();
    ui->tableWidget->setItem(0,0,new QTableWidgetItem(Line));
}
[...]

VRonin

separate QTableWidget into a QTableView and a QStandardItemModel
add a QSortFilterProxyModel as the model of QTableView and set the QStandardItemModel as the QSortFilterProxyModel's sourceModel
call QSortFilterProxyModel::setFilterWildcard or QSortFilterProxyModel::setFilterRegExp to perform the searching

See Basic Sort/Filter Model Example