How to implement a filter option in QTableWidget

Question

In my application, I have QTableWidget displaying multiple rows, a line edit to enter a string and a push button.

The requirement says, upon clicking on the push button, the same QTableWidget should show only rows which contain the string entered into the line edit.

I thought of using a QSortFilterProxyModel, but QTableWidget has setModel(...) method private, so I am unable to use QSortFilterProxyModel in this case.

Answer 1

Using a sort/filter proxy is probably overkill for this anyway.

It's a matter of iterating through all of your QTableWidgetItem objects, determining if their text matches the filter and calling QTableView::setRowHidden() as needed.

For example:

QString filter = textEdit->text();
for( int i = 0; i < table->rowCount(); ++i )
{
    bool match = false;
    for( int j = 0; j < table->columnCount(); ++j )
    {
        QTableWidgetItem *item = table->item( i, j );
        if( item->text().contains(filter) )
        {
            match = true;
            break;
        }
    }
    table->setRowHidden( i, !match );
}