File: configgroup.cpp

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/*
    SPDX-FileCopyrightText: 2011-2012 Sebastian Kügler <sebas@kde.org>
    SPDX-FileCopyrightText: 2013 Aaron Seigo <aseigo@kde.org>

    SPDX-License-Identifier: LGPL-2.0-or-later
*/

#include "configgroup.h"
#include "debug.h"

#include <QDebug>
#include <QTimer>
#include <chrono>
#include <kconfig.h>
#include <kconfiggroup.h>
#include <ksharedconfig.h>

using namespace std::chrono_literals;

class ConfigGroupPrivate
{
public:
    ConfigGroupPrivate(ConfigGroup *q)
        : q(q)
        , config(nullptr)
        , configGroup(nullptr)
    {
    }

    ~ConfigGroupPrivate()
    {
        delete configGroup;
    }

    ConfigGroup *const q;
    KSharedConfigPtr config;
    KConfigGroup *configGroup;
    QString file;
    QTimer *synchTimer;
    QString group;
};

ConfigGroup::ConfigGroup(QObject *parent)
    : QObject(parent)
    , d(new ConfigGroupPrivate(this))
{
    // Delay and compress everything within 5 seconds into one sync
    d->synchTimer = new QTimer(this);
    d->synchTimer->setSingleShot(true);
    d->synchTimer->setInterval(1500ms);
    connect(d->synchTimer, &QTimer::timeout, this, &ConfigGroup::sync);
}

ConfigGroup::~ConfigGroup()
{
    if (d->synchTimer->isActive()) {
        // qDebug() << "SYNC......";
        d->synchTimer->stop();
        sync();
    }

    delete d;
}

KConfigGroup *ConfigGroup::configGroup()
{
    return d->configGroup;
}

QString ConfigGroup::file() const
{
    return d->file;
}

void ConfigGroup::setFile(const QString &filename)
{
    if (d->file == filename) {
        return;
    }
    d->file = filename;
    d->config = nullptr;
    readConfigFile();
    Q_EMIT fileChanged();
}

KSharedConfigPtr ConfigGroup::config() const
{
    return d->config;
}

void ConfigGroup::setConfig(KSharedConfigPtr config)
{
    if (d->config == config) {
        return;
    }

    d->config = config;

    if (d->config) {
        d->file = config->name();
    } else {
        d->file.clear();
    }

    readConfigFile();
}

QString ConfigGroup::group() const
{
    return d->group;
}

void ConfigGroup::setGroup(const QString &groupname)
{
    if (d->group == groupname) {
        return;
    }
    d->group = groupname;
    readConfigFile();
    Q_EMIT groupChanged();
    Q_EMIT keyListChanged();
}

QStringList ConfigGroup::keyList() const
{
    if (!d->configGroup) {
        return QStringList();
    }
    return d->configGroup->keyList();
}

QStringList ConfigGroup::groupList() const
{
    if (!d->configGroup) {
        return QStringList();
    }
    return d->configGroup->groupList();
}

bool ConfigGroup::readConfigFile()
{
    // Find parent ConfigGroup
    ConfigGroup *parentGroup = nullptr;
    QObject *current = parent();
    while (current) {
        parentGroup = qobject_cast<ConfigGroup *>(current);
        if (parentGroup) {
            break;
        }
        current = current->parent();
    }

    delete d->configGroup;
    d->configGroup = nullptr;

    if (parentGroup) {
        d->configGroup = new KConfigGroup(parentGroup->configGroup(), d->group);
        return true;
    } else {
        if (!d->config) {
            if (d->file.isEmpty()) {
                qCWarning(PLASMASHELL) << "Could not find KConfig Parent: specify a file or parent to another ConfigGroup";
                return false;
            }

            d->config = KSharedConfig::openConfig(d->file);
        }

        d->configGroup = new KConfigGroup(d->config, d->group);
        return true;
    }
}

// Bound methods and slots

bool ConfigGroup::writeEntry(const QString &key, const QJSValue &value)
{
    if (!d->configGroup) {
        return false;
    }

    d->configGroup->writeEntry(key, value.toVariant());
    d->synchTimer->start();
    return true;
}

QVariant ConfigGroup::readEntry(const QString &key)
{
    if (!d->configGroup) {
        return QVariant();
    }
    const QVariant value = d->configGroup->readEntry(key, QVariant(QString()));
    // qDebug() << " reading setting: " << key << value;
    return value;
}

void ConfigGroup::deleteEntry(const QString &key)
{
    if (d->configGroup) {
        d->configGroup->deleteEntry(key);
    }
}

void ConfigGroup::sync()
{
    if (d->configGroup) {
        // qDebug() << "synching config...";
        d->configGroup->sync();
    }
}

#include "moc_configgroup.cpp"