RetroShare/retroshare-gui/src/gui/settings/rsettings.cpp

/****************************************************************
 * This file is distributed under the following license:
 *
 * Copyright (c) 2008, crypton
 * Copyright (c) 2008, Matt Edman, Justin Hipple
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, 
 *  Boston, MA  02110-1301, USA.
 ****************************************************************/

#include <rshare.h>
#include <iostream>

#include "rsettings.h"
#include <retroshare/rsinit.h>

/** The file in which all settings will read and written. */
#define SETTINGS_FILE   (QString::fromUtf8(RsAccounts::AccountDirectory().c_str()) + "/RetroShare.conf")

/** Constructor */
RSettings::RSettings(const QString settingsGroup)
: QSettings(SETTINGS_FILE, QSettings::IniFormat)
{
    RsPeerId sPreferedId;
    m_bValid = RsAccounts::GetPreferredAccountId(sPreferedId);

    if (!settingsGroup.isEmpty())
        beginGroup(settingsGroup);
}

RSettings::RSettings(const std::string &fileName, const QString settingsGroup)
: QSettings(QString::fromStdString(fileName), QSettings::IniFormat)
{
  m_bValid = true;
  if (!settingsGroup.isEmpty())
    beginGroup(settingsGroup);
}

/** Returns the saved value associated with <b>key</b>. If no value has been
 * set, the default value is returned.
 * \sa setDefault
 */
QVariant
RSettings::value(const QString &key, const QVariant &defaultVal) const
{
    if (m_bValid == false) {
        // return only default value
        return defaultVal.isNull() ? defaultValue(key) : defaultVal;
    }
    return QSettings::value(key, defaultVal.isNull() ? defaultValue(key) : defaultVal);
}

/** Sets the value associated with <b>key</b> to <b>val</b>. */
void
RSettings::setValue(const QString &key, const QVariant &val)
{
    if (m_bValid == false) {
        std::cerr << "RSettings::setValue() Calling on invalid object, key = " << key.toStdString() << std::endl;
        return;
    }
    if (val == defaultValue(key))
        QSettings::remove(key);
    else if (val != value(key))
        QSettings::setValue(key, val);
}

QVariant RSettings::valueFromGroup(const QString &group, const QString &key, const QVariant &defaultVal)
{
    beginGroup(group);
    QVariant val = value(key, defaultVal);
    endGroup();

    return val;
}

void RSettings::setValueToGroup(const QString &group, const QString &key, const QVariant &val)
{
    beginGroup(group);
    setValue(key, val);
    endGroup();
}

/** Sets the default setting for <b>key</b> to <b>val</b>. */
void
RSettings::setDefault(const QString &key, const QVariant &val)
{
  _defaults.insert(key, val);
}

/** Returns the default setting value associated with <b>key</b>. If
 * <b>key</b> has no default value, then an empty QVariant is returned. */
QVariant
RSettings::defaultValue(const QString &key) const
{
  if (_defaults.contains(key))
    return _defaults.value(key);
  return QVariant();
}

/** Resets all settings. */
void
RSettings::reset()
{
  /* Static method, so we have to create a QSettings object. */
  QSettings settings(SETTINGS_FILE, QSettings::IniFormat);
  settings.clear();
}

/** Returns a map of all currently saved settings at the last appyl() point. */
/*QMap<QString, QVariant>
RSettings::allSettings() const
{
  QMap<QString, QVariant> settings;
  foreach (QString key, allKeys()) {
    settings.insert(key, value(key));
  }
  return settings;
}*/