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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
/*
window.cpp
A minimal subclass of QTableView with slots to allow the selection model
to be monitored.
*/
#include <QAbstractItemModel>
#include <QItemSelection>
#include <QItemSelectionModel>
#include <QMenu>
#include <QMenuBar>
#include <QStatusBar>
#include "window.h"
class TableModel : public QAbstractTableModel
{
Q_OBJECT
public:
TableModel(int rows, int columns, QObject *parent = nullptr) {}
int rowCount(const QModelIndex &parent = QModelIndex()) const override {
return 0;
}
int columnCount(const QModelIndex &parent = QModelIndex()) const override {
return 0;
}
QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override {
return QVariant();
}
};
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
setWindowTitle("Selected Items in a Table Model");
model = new TableModel(8, 4, this);
table = new QTableView(this);
table->setModel(model);
QMenu *actionMenu = new QMenu(tr("&Actions"), this);
QAction *fillAction = actionMenu->addAction(tr("&Fill Selection"));
QAction *clearAction = actionMenu->addAction(tr("&Clear Selection"));
QAction *selectAllAction = actionMenu->addAction(tr("&Select All"));
menuBar()->addMenu(actionMenu);
connect(fillAction, &QAction::triggered, this, &MainWindow::fillSelection);
connect(clearAction, &QAction::triggered, this, &MainWindow::clearSelection);
connect(selectAllAction, &QAction::triggered, this, &MainWindow::selectAll);
selectionModel = table->selectionModel();
statusBar();
setCentralWidget(table);
}
void MainWindow::fillSelection()
{
//! [0]
const QModelIndexList indexes = selectionModel->selectedIndexes();
for (const QModelIndex &index : indexes) {
QString text = QString("(%1,%2)").arg(index.row()).arg(index.column());
model->setData(index, text);
}
//! [0]
}
void MainWindow::clearSelection()
{
const QModelIndexList indexes = selectionModel->selectedIndexes();
for (const QModelIndex &index : indexes)
model->setData(index, QString());
}
void MainWindow::selectAll()
{
//! [1]
QModelIndex parent = QModelIndex();
//! [1] //! [2]
QModelIndex topLeft = model->index(0, 0, parent);
QModelIndex bottomRight = model->index(model->rowCount(parent)-1,
model->columnCount(parent)-1, parent);
//! [2]
//! [3]
QItemSelection selection(topLeft, bottomRight);
selectionModel->select(selection, QItemSelectionModel::Select);
//! [3]
}
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