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locationdialog.cpp Example File

tools/settingseditor/locationdialog.cpp
 /****************************************************************************
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 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
 ** Contact: http://www.qt-project.org/
 **
 ** This file is part of the examples of the Qt Toolkit.
 **
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 **   * Redistributions of source code must retain the above copyright
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 ****************************************************************************/

 #include <QtWidgets>

 #include "locationdialog.h"

 LocationDialog::LocationDialog(QWidget *parent)
     : QDialog(parent)
 {
     formatComboBox = new QComboBox;
     formatComboBox->addItem(tr("Native"));
     formatComboBox->addItem(tr("INI"));

     scopeComboBox = new QComboBox;
     scopeComboBox->addItem(tr("User"));
     scopeComboBox->addItem(tr("System"));

     organizationComboBox = new QComboBox;
     organizationComboBox->addItem(tr("Qt"));
     organizationComboBox->setEditable(true);

     applicationComboBox = new QComboBox;
     applicationComboBox->addItem(tr("Any"));
     applicationComboBox->addItem(tr("Application Example"));
     applicationComboBox->addItem(tr("Assistant"));
     applicationComboBox->addItem(tr("Designer"));
     applicationComboBox->addItem(tr("Linguist"));
     applicationComboBox->setEditable(true);
     applicationComboBox->setCurrentIndex(3);

     formatLabel = new QLabel(tr("&Format:"));
     formatLabel->setBuddy(formatComboBox);

     scopeLabel = new QLabel(tr("&Scope:"));
     scopeLabel->setBuddy(scopeComboBox);

     organizationLabel = new QLabel(tr("&Organization:"));
     organizationLabel->setBuddy(organizationComboBox);

     applicationLabel = new QLabel(tr("&Application:"));
     applicationLabel->setBuddy(applicationComboBox);

     locationsGroupBox = new QGroupBox(tr("Setting Locations"));

     QStringList labels;
     labels << tr("Location") << tr("Access");

     locationsTable = new QTableWidget;
     locationsTable->setSelectionMode(QAbstractItemView::SingleSelection);
     locationsTable->setSelectionBehavior(QAbstractItemView::SelectRows);
     locationsTable->setEditTriggers(QAbstractItemView::NoEditTriggers);
     locationsTable->setColumnCount(2);
     locationsTable->setHorizontalHeaderLabels(labels);
     locationsTable->horizontalHeader()->setSectionResizeMode(0, QHeaderView::Stretch);
     locationsTable->horizontalHeader()->resizeSection(1, 180);

     buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok
                                      | QDialogButtonBox::Cancel);

     connect(formatComboBox, SIGNAL(activated(int)),
             this, SLOT(updateLocationsTable()));
     connect(scopeComboBox, SIGNAL(activated(int)),
             this, SLOT(updateLocationsTable()));
     connect(organizationComboBox->lineEdit(),
             SIGNAL(editingFinished()),
             this, SLOT(updateLocationsTable()));
     connect(applicationComboBox->lineEdit(),
             SIGNAL(editingFinished()),
             this, SLOT(updateLocationsTable()));
     connect(buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
     connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));

     QVBoxLayout *locationsLayout = new QVBoxLayout;
     locationsLayout->addWidget(locationsTable);
     locationsGroupBox->setLayout(locationsLayout);

     QGridLayout *mainLayout = new QGridLayout;
     mainLayout->addWidget(formatLabel, 0, 0);
     mainLayout->addWidget(formatComboBox, 0, 1);
     mainLayout->addWidget(scopeLabel, 1, 0);
     mainLayout->addWidget(scopeComboBox, 1, 1);
     mainLayout->addWidget(organizationLabel, 2, 0);
     mainLayout->addWidget(organizationComboBox, 2, 1);
     mainLayout->addWidget(applicationLabel, 3, 0);
     mainLayout->addWidget(applicationComboBox, 3, 1);
     mainLayout->addWidget(locationsGroupBox, 4, 0, 1, 2);
     mainLayout->addWidget(buttonBox, 5, 0, 1, 2);
     setLayout(mainLayout);

     updateLocationsTable();

     setWindowTitle(tr("Open Application Settings"));
     resize(650, 400);
 }

 QSettings::Format LocationDialog::format() const
 {
     if (formatComboBox->currentIndex() == 0)
         return QSettings::NativeFormat;
     else
         return QSettings::IniFormat;
 }

 QSettings::Scope LocationDialog::scope() const
 {
     if (scopeComboBox->currentIndex() == 0)
         return QSettings::UserScope;
     else
         return QSettings::SystemScope;
 }

 QString LocationDialog::organization() const
 {
     return organizationComboBox->currentText();
 }

 QString LocationDialog::application() const
 {
     if (applicationComboBox->currentText() == tr("Any"))
         return "";
     else
         return applicationComboBox->currentText();
 }

 void LocationDialog::updateLocationsTable()
 {
     locationsTable->setUpdatesEnabled(false);
     locationsTable->setRowCount(0);

     for (int i = 0; i < 2; ++i) {
         if (i == 0 && scope() == QSettings::SystemScope)
             continue;

         QSettings::Scope actualScope = (i == 0) ? QSettings::UserScope
                                                 : QSettings::SystemScope;
         for (int j = 0; j < 2; ++j) {
             if (j == 0 && application().isEmpty())
                 continue;

             QString actualApplication;
             if (j == 0)
                 actualApplication = application();
             QSettings settings(format(), actualScope, organization(),
                                actualApplication);

             int row = locationsTable->rowCount();
             locationsTable->setRowCount(row + 1);

             QTableWidgetItem *item0 = new QTableWidgetItem;
             item0->setText(settings.fileName());

             QTableWidgetItem *item1 = new QTableWidgetItem;
             bool disable = (settings.childKeys().isEmpty()
                             && settings.childGroups().isEmpty());

             if (row == 0) {
                 if (settings.isWritable()) {
                     item1->setText(tr("Read-write"));
                     disable = false;
                 } else {
                     item1->setText(tr("Read-only"));
                 }
                 buttonBox->button(QDialogButtonBox::Ok)->setDisabled(disable);
             } else {
                 item1->setText(tr("Read-only fallback"));
             }

             if (disable) {
                 item0->setFlags(item0->flags() & ~Qt::ItemIsEnabled);
                 item1->setFlags(item1->flags() & ~Qt::ItemIsEnabled);
             }

             locationsTable->setItem(row, 0, item0);
             locationsTable->setItem(row, 1, item1);
         }
     }
     locationsTable->setUpdatesEnabled(true);
 }
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