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#include <QtGui>

#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("Trolltech"));

    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()->setResizeMode(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);

}