qt 6.5.1 original

examples/widgets/tools/completer/CMakeLists.txt

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+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(completer LANGUAGES CXX)
+
+if(NOT DEFINED INSTALL_EXAMPLESDIR)
+    set(INSTALL_EXAMPLESDIR "examples")
+endif()
+
+set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/widgets/tools/completer")
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
+
+qt_standard_project_setup()
+
+qt_add_executable(completer
+    fsmodel.cpp fsmodel.h
+    main.cpp
+    mainwindow.cpp mainwindow.h
+)
+
+set_target_properties(completer PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(completer PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::Widgets
+)
+
+# Resources:
+set(completer_resource_files
+    "resources/countries.txt"
+    "resources/wordlist.txt"
+)
+
+qt_add_resources(completer "completer"
+    PREFIX
+        "/"
+    FILES
+        ${completer_resource_files}
+)
+
+install(TARGETS completer
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

examples/widgets/tools/completer/completer.pro

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+QT += widgets
+requires(qtConfig(completer))
+
+HEADERS   = fsmodel.h \
+            mainwindow.h
+SOURCES   = fsmodel.cpp \
+            main.cpp \
+            mainwindow.cpp
+RESOURCES = completer.qrc
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/widgets/tools/completer
+INSTALLS += target

examples/widgets/tools/completer/completer.qrc

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+<!DOCTYPE RCC><RCC version="1.0">
+<qresource prefix="/">
+   <file>resources/countries.txt</file>
+   <file>resources/wordlist.txt</file>
+</qresource>
+</RCC>

examples/widgets/tools/completer/fsmodel.cpp

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "fsmodel.h"
+
+//! [0]
+FileSystemModel::FileSystemModel(QObject *parent)
+    : QFileSystemModel(parent)
+{
+}
+//! [0]
+
+//! [1]
+QVariant FileSystemModel::data(const QModelIndex &index, int role) const
+{
+    if (role == Qt::DisplayRole && index.column() == 0) {
+        QString path  = QDir::toNativeSeparators(filePath(index));
+        if (path.endsWith(QDir::separator()))
+            path.chop(1);
+        return path;
+    }
+
+    return QFileSystemModel::data(index, role);
+}
+
+//! [1]

examples/widgets/tools/completer/fsmodel.h

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef FILESYSTEMMODEL_H
+#define FILESYSTEMMODEL_H
+
+#include <QFileSystemModel>
+
+// With a QFileSystemModel, set on a view, you will see "Program Files" in the view
+// But with this model, you will see "C:\Program Files" in the view.
+// We achieve this, by having the data() return the entire file path for
+// the display role. Note that the Qt::EditRole over which the QCompleter
+// looks for matches is left unchanged
+//! [0]
+class FileSystemModel : public QFileSystemModel
+{
+public:
+    FileSystemModel(QObject *parent = nullptr);
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
+};
+//! [0]
+
+#endif

examples/widgets/tools/completer/main.cpp

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include <QApplication>
+#include "mainwindow.h"
+
+//! [0]
+int main(int argc, char *argv[])
+{
+    Q_INIT_RESOURCE(completer);
+
+    QApplication app(argc, argv);
+    MainWindow window;
+    window.show();
+    return app.exec();
+}
+//! [0]

examples/widgets/tools/completer/mainwindow.cpp

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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]

examples/widgets/tools/completer/mainwindow.h

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+
+QT_BEGIN_NAMESPACE
+class QAbstractItemModel;
+class QComboBox;
+class QCompleter;
+class QLabel;
+class QLineEdit;
+class QCheckBox;
+class QSpinBox;
+QT_END_NAMESPACE
+
+//! [0]
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    MainWindow(QWidget *parent = nullptr);
+
+private slots:
+    void about();
+    void changeCase(int);
+    void changeMode(int);
+    void changeModel();
+    void changeMaxVisible(int);
+//! [0]
+
+//! [1]
+private:
+    void createMenu();
+    QAbstractItemModel *modelFromFile(const QString &fileName);
+
+    QComboBox *caseCombo = nullptr;
+    QComboBox *modeCombo = nullptr;
+    QComboBox *modelCombo = nullptr;
+    QSpinBox *maxVisibleSpinBox = nullptr;
+    QCheckBox *wrapCheckBox = nullptr;
+    QCompleter *completer = nullptr;
+    QLabel *contentsLabel = nullptr;
+    QLineEdit *lineEdit = nullptr;
+};
+//! [1]
+
+#endif // MAINWINDOW_H

examples/widgets/tools/completer/resources/countries.txt

@@ -0,0 +1,241 @@
+Afghanistan                     AF
+Albania                         AL
+Algeria                         DZ
+American Samoa                   AS
+Andorra                         AD
+Angola                          AO
+Anguilla                        AI
+Antarctica                      AQ
+Antigua And Barbuda               AG
+Argentina                       AR
+Armenia                         AM
+Aruba                           AW
+Australia                       AU
+Austria                         AT
+Azerbaijan                      AZ
+Bahamas                         BS
+Bahrain                         BH
+Bangladesh                      BD
+Barbados                        BB
+Belarus                         BY
+Belgium                         BE
+Belize                          BZ
+Benin                           BJ
+Bermuda                         BM
+Bhutan                          BT
+Bolivia                         BO
+Bosnia And Herzegowina            BA
+Botswana                        BW
+Bouvet Island                    BV
+Brazil                          BR
+British Indian Ocean Territory     IO
+British Virgin Islands            VG
+Brunei Darussalam                BN
+Bulgaria                        BG
+Burkina Faso                     BF
+Burundi                         BI
+Cambodia                        KH
+Cameroon                        CM
+Canada                          CA
+Cape Verde                       CV
+Cayman Islands                   KY
+Central African Republic          CF
+Chad                            TD
+Chile                           CL
+China                           CN
+Christmas Island                 CX
+Cocos Islands                    CC
+Colombia                        CO
+Comoros                         KM
+Cook Islands                     CK
+Costa Rica                       CR
+Croatia                         HR
+Cuba                            CU
+Cyprus                          CY
+Czech Republic                   CZ
+Democratic Republic Of Congo       CD
+Democratic Republic Of Korea       KP
+Denmark                         DK
+Djibouti                        DJ
+Dominica                        DM
+Dominican Republic               DO
+EastTimor                       TL
+Ecuador                         EC
+Egypt                           EG
+El Salvador                      SV
+Equatorial Guinea                GQ
+Eritrea                         ER
+Estonia                         EE
+Ethiopia                        ET
+Falkland Islands                 FK
+Faroe Islands                    FO
+Fiji                            FJ
+Finland                         FI
+France                          FR
+French Guiana                    GF
+French Polynesia                 PF
+French Southern Territories       TF
+Gabon                           GA
+Gambia                          GM
+Georgia                         GE
+Germany                         DE
+Ghana                           GH
+Gibraltar                       GI
+Greece                          GR
+Greenland                       GL
+Grenada                         GD
+Guadeloupe                      GP
+Guam                            GU
+Guatemala                       GT
+Guinea                          GN
+Guinea Bissau                    GW
+Guyana                          GY
+Haiti                           HT
+Heard And McDonald Islands         HM
+Honduras                        HN
+Hong Kong                        HK
+Hungary                         HU
+Iceland                         IS
+India                           IN
+Indonesia                       ID
+Iran                            IR
+Iraq                            IQ
+Ireland                         IE
+Israel                          IL
+Italy                           IT
+Ivory Coast                      CI
+Jamaica                         JM
+Japan                           JP
+Jordan                          JO
+Kazakhstan                      KZ
+Kenya                           KE
+Kiribati                        KI
+Kuwait                          KW
+Kyrgyzstan                      KG
+Lao                             LA
+Latvia                          LV
+Lebanon                         LB
+Lesotho                         LS
+Liberia                         LR
+Libyan Arab Jamahiriya            LY
+Liechtenstein                   LI
+Lithuania                       LT
+Luxembourg                      LU
+Macau                           MO
+Macedonia                       MK
+Madagascar                      MG
+Malawi                          MW
+Malaysia                        MY
+Maldives                        MV
+Mali                            ML
+Malta                           MT
+Marshall Islands                 MH
+Martinique                      MQ
+Mauritania                      MR
+Mauritius                       MU
+Mayotte                         YT
+Metropolitan France              FX
+Mexico                          MX
+Micronesia                      FM
+Moldova                         MD
+Monaco                          MC
+Mongolia                        MN
+Montserrat                      MS
+Morocco                         MA
+Mozambique                      MZ
+Myanmar                         MM
+Namibia                         NA
+Nauru                           NR
+Nepal                           NP
+Netherlands                     NL
+Netherlands Antilles             AN
+New Caledonia                    NC
+New Zealand                      NZ
+Nicaragua                       NI
+Niger                           NE
+Nigeria                         NG
+Niue                            NU
+Norfolk Island                   NF
+Northern Mariana Islands          MP
+Norway                          NO
+Oman                            OM
+Pakistan                        PK
+Palau                           PW
+Palestinian Territory            PS
+Panama                          PA
+Papua New Guinea                  PG
+Paraguay                        PY
+Peoples Republic Of Congo          CG
+Peru                            PE
+Philippines                     PH
+Pitcairn                        PN
+Poland                          PL
+Portugal                        PT
+Puerto Rico                      PR
+Qatar                           QA
+Republic Of Korea                 KR
+Reunion                         RE
+Romania                         RO
+Russian Federation               RU
+Rwanda                          RW
+Saint Kitts And Nevis              KN
+Samoa                           WS
+San Marino                       SM
+Sao Tome And Principe              ST
+Saudi Arabia                     SA
+Senegal                         SN
+Serbia And Montenegro             CS
+Seychelles                      SC
+Sierra Leone                     SL
+Singapore                       SG
+Slovakia                        SK
+Slovenia                        SI
+Solomon Islands                  SB
+Somalia                         SO
+South Africa                     ZA
+South Georgia And The South Sandwich Islands GS
+Spain                           ES
+Sri Lanka                        LK
+St Helena                        SH
+St Lucia                         LC
+St Pierre And Miquelon             PM
+St Vincent And The Grenadines       VC
+Sudan                           SD
+Suriname                        SR
+Svalbard And Jan Mayen Islands      SJ
+Swaziland                       SZ
+Sweden                          SE
+Switzerland                     CH
+Syrian Arab Republic              SY
+Taiwan                          TW
+Tajikistan                      TJ
+Tanzania                        TZ
+Thailand                        TH
+Togo                            TG
+Tokelau                         TK
+Tonga                           TO
+Trinidad And Tobago               TT
+Tunisia                         TN
+Turkey                          TR
+Turkmenistan                    TM
+Turks And Caicos Islands           TC
+Tuvalu                          TV
+US Virgin Islands                 VI
+Uganda                          UG
+Ukraine                         UA
+United Arab Emirates              AE
+United Kingdom                   GB
+United States                    US
+United States Minor Outlying Islands UM
+Uruguay                         UY
+Uzbekistan                      UZ
+Vanuatu                         VU
+Vatican City State                VA
+Venezuela                       VE
+Viet Nam                         VN
+Wallis And Futuna Islands          WF
+Western Sahara                   EH
+Yemen                           YE
+Yugoslavia                      YU
+Zambia                          ZM
+Zimbabwe                        ZW