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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include "mainwindow.h"
++ #include "fsmodel.h"
++
++ #include <QAction>
++ #include <QApplication>
++ #include <QCheckBox>
++ #include <QComboBox>
++ #include <QCompleter>
++ #include <QGridLayout>
++ #include <QHeaderView>
++ #include <QLabel>
++ #include <QLineEdit>
++ #include <QMenuBar>
++ #include <QMessageBox>
++ #include <QSpinBox>
++ #include <QStandardItemModel>
++ #include <QStringListModel>
++ #include <QTreeView>
++
++ //! [0]
++ MainWindow::MainWindow(QWidget *parent)
++ : QMainWindow(parent)
++ {
++ createMenu();
++
++ QWidget *centralWidget = new QWidget;
++
++ QLabel *modelLabel = new QLabel;
++ modelLabel->setText(tr("Model"));
++
++ modelCombo = new QComboBox;
++ modelCombo->addItem(tr("QFileSystemModel"));
++ modelCombo->addItem(tr("QFileSystemModel that shows full path"));
++ modelCombo->addItem(tr("Country list"));
++ modelCombo->addItem(tr("Word list"));
++ modelCombo->setCurrentIndex(0);
++
++ QLabel *modeLabel = new QLabel;
++ modeLabel->setText(tr("Completion Mode"));
++ modeCombo = new QComboBox;
++ modeCombo->addItem(tr("Inline"));
++ modeCombo->addItem(tr("Filtered Popup"));
++ modeCombo->addItem(tr("Unfiltered Popup"));
++ modeCombo->setCurrentIndex(1);
++
++ QLabel *caseLabel = new QLabel;
++ caseLabel->setText(tr("Case Sensitivity"));
++ caseCombo = new QComboBox;
++ caseCombo->addItem(tr("Case Insensitive"));
++ caseCombo->addItem(tr("Case Sensitive"));
++ caseCombo->setCurrentIndex(0);
++ //! [0]
++
++ //! [1]
++ QLabel *maxVisibleLabel = new QLabel;
++ maxVisibleLabel->setText(tr("Max Visible Items"));
++ maxVisibleSpinBox = new QSpinBox;
++ maxVisibleSpinBox->setRange(3,25);
++ maxVisibleSpinBox->setValue(10);
++
++ wrapCheckBox = new QCheckBox;
++ wrapCheckBox->setText(tr("Wrap around completions"));
++ wrapCheckBox->setChecked(true);
++ //! [1]
++
++ //! [2]
++ contentsLabel = new QLabel;
++ contentsLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
++
++ connect(modelCombo, &QComboBox::activated,
++ this, &MainWindow::changeModel);
++ connect(modeCombo, &QComboBox::activated,
++ this, &MainWindow::changeMode);
++ connect(caseCombo, &QComboBox::activated,
++ this, &MainWindow::changeCase);
++ connect(maxVisibleSpinBox, &QSpinBox::valueChanged,
++ this, &MainWindow::changeMaxVisible);
++ //! [2]
++
++ //! [3]
++ lineEdit = new QLineEdit;
++
++ QGridLayout *layout = new QGridLayout;
++ layout->addWidget(modelLabel, 0, 0); layout->addWidget(modelCombo, 0, 1);
++ layout->addWidget(modeLabel, 1, 0); layout->addWidget(modeCombo, 1, 1);
++ layout->addWidget(caseLabel, 2, 0); layout->addWidget(caseCombo, 2, 1);
++ layout->addWidget(maxVisibleLabel, 3, 0); layout->addWidget(maxVisibleSpinBox, 3, 1);
++ layout->addWidget(wrapCheckBox, 4, 0);
++ layout->addWidget(contentsLabel, 5, 0, 1, 2);
++ layout->addWidget(lineEdit, 6, 0, 1, 2);
++ centralWidget->setLayout(layout);
++ setCentralWidget(centralWidget);
++
++ changeModel();
++
++ setWindowTitle(tr("Completer"));
++ lineEdit->setFocus();
++ }
++ //! [3]
++
++ //! [4]
++ void MainWindow::createMenu()
++ {
++ QAction *exitAction = new QAction(tr("Exit"), this);
++ QAction *aboutAct = new QAction(tr("About"), this);
++ QAction *aboutQtAct = new QAction(tr("About Qt"), this);
++
++ connect(exitAction, &QAction::triggered, qApp, &QApplication::quit);
++ connect(aboutAct, &QAction::triggered, this, &MainWindow::about);
++ connect(aboutQtAct, &QAction::triggered, qApp, &QApplication::aboutQt);
++
++ QMenu *fileMenu = menuBar()->addMenu(tr("File"));
++ fileMenu->addAction(exitAction);
++
++ QMenu *helpMenu = menuBar()->addMenu(tr("About"));
++ helpMenu->addAction(aboutAct);
++ helpMenu->addAction(aboutQtAct);
++ }
++ //! [4]
++
++ //! [5]
++ QAbstractItemModel *MainWindow::modelFromFile(const QString &fileName)
++ {
++ QFile file(fileName);
++ if (!file.open(QFile::ReadOnly))
++ return new QStringListModel(completer);
++ //! [5]
++
++ //! [6]
++ #ifndef QT_NO_CURSOR
++ QGuiApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
++ #endif
++ QStringList words;
++
++ while (!file.atEnd()) {
++ QByteArray line = file.readLine();
++ if (!line.isEmpty())
++ words << QString::fromUtf8(line.trimmed());
++ }
++
++ #ifndef QT_NO_CURSOR
++ QGuiApplication::restoreOverrideCursor();
++ #endif
++ //! [6]
++
++ //! [7]
++ if (!fileName.contains(QLatin1String("countries.txt")))
++ return new QStringListModel(words, completer);
++ //! [7]
++
++ // The last two chars of the countries.txt file indicate the country
++ // symbol. We put that in column 2 of a standard item model
++ //! [8]
++ QStandardItemModel *m = new QStandardItemModel(words.count(), 2, completer);
++ //! [8] //! [9]
++ for (int i = 0; i < words.count(); ++i) {
++ QModelIndex countryIdx = m->index(i, 0);
++ QModelIndex symbolIdx = m->index(i, 1);
++ QString country = words.at(i).mid(0, words[i].length() - 2).trimmed();
++ QString symbol = words.at(i).right(2);
++ m->setData(countryIdx, country);
++ m->setData(symbolIdx, symbol);
++ }
++
++ return m;
++ }
++ //! [9]
++
++ //! [10]
++ void MainWindow::changeMode(int index)
++ {
++ QCompleter::CompletionMode mode;
++ if (index == 0)
++ mode = QCompleter::InlineCompletion;
++ else if (index == 1)
++ mode = QCompleter::PopupCompletion;
++ else
++ mode = QCompleter::UnfilteredPopupCompletion;
++
++ completer->setCompletionMode(mode);
++ }
++ //! [10]
++
++ void MainWindow::changeCase(int cs)
++ {
++ completer->setCaseSensitivity(cs ? Qt::CaseSensitive : Qt::CaseInsensitive);
++ }
++
++ //! [11]
++ void MainWindow::changeModel()
++ {
++ delete completer;
++ completer = new QCompleter(this);
++ completer->setMaxVisibleItems(maxVisibleSpinBox->value());
++
++ switch (modelCombo->currentIndex()) {
++ default:
++ case 0:
++ { // Unsorted QFileSystemModel
++ QFileSystemModel *fsModel = new QFileSystemModel(completer);
++ fsModel->setRootPath(QString());
++ completer->setModel(fsModel);
++ contentsLabel->setText(tr("Enter file path"));
++ }
++ break;
++ //! [11] //! [12]
++ case 1:
++ { // FileSystemModel that shows full paths
++ FileSystemModel *fsModel = new FileSystemModel(completer);
++ completer->setModel(fsModel);
++ fsModel->setRootPath(QString());
++ contentsLabel->setText(tr("Enter file path"));
++ }
++ break;
++ //! [12] //! [13]
++ case 2:
++ { // Country List
++ completer->setModel(modelFromFile(":/resources/countries.txt"));
++ QTreeView *treeView = new QTreeView;
++ completer->setPopup(treeView);
++ treeView->setRootIsDecorated(false);
++ treeView->header()->hide();
++ treeView->header()->setStretchLastSection(false);
++ treeView->header()->setSectionResizeMode(0, QHeaderView::Stretch);
++ treeView->header()->setSectionResizeMode(1, QHeaderView::ResizeToContents);
++ contentsLabel->setText(tr("Enter name of your country"));
++ }
++ break;
++ //! [13] //! [14]
++ case 3:
++ { // Word list
++ completer->setModel(modelFromFile(":/resources/wordlist.txt"));
++ completer->setModelSorting(QCompleter::CaseInsensitivelySortedModel);
++ contentsLabel->setText(tr("Enter a word"));
++ }
++ break;
++ }
++
++ changeMode(modeCombo->currentIndex());
++ changeCase(caseCombo->currentIndex());
++ completer->setWrapAround(wrapCheckBox->isChecked());
++ lineEdit->setCompleter(completer);
++ connect(wrapCheckBox, &QAbstractButton::clicked, completer, &QCompleter::setWrapAround);
++ }
++ //! [14]
++
++ //! [15]
++ void MainWindow::changeMaxVisible(int max)
++ {
++ completer->setMaxVisibleItems(max);
++ }
++ //! [15]
++
++ //! [16]
++ void MainWindow::about()
++ {
++ QMessageBox::about(this, tr("About"), tr("This example demonstrates the "
++ "different features of the QCompleter class."));
++ }
++ //! [16]