mainwindow.cpp

#include "mainwindow.h"
#include "./ui_mainwindow.h"
#include "customwidget.h"

MainWindow::MainWindow(QWidget* parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    // Creates a list of custom widgets
    for (int i = 0; i < 5; ++i) {
        auto item = new QListWidgetItem();

        auto widget = new CustomWidget(this);
        widget->setText(QString("text %1").arg(i));

        item->setSizeHint(widget->sizeHint());

        ui->listWidget->addItem(item);
        ui->listWidget->setItemWidget(item, widget);
    }
}

MainWindow::~MainWindow() { }

/*
 * Removes the item from the list
 */
void MainWindow::removeItem(const QString& text)
{
    for (int i = 0; i < ui->listWidget->count(); ++i) {
        auto item = ui->listWidget->item(i);
        auto itemWidget = qobject_cast<CustomWidget*>(ui->listWidget->itemWidget(item));
        if (itemWidget->getText() == text) {
            delete ui->listWidget->takeItem(i);
            break;
        }
    }
}