/* BEGIN_COMMON_COPYRIGHT_HEADER
 * (c)LGPL2+
 *
 * LXQt - a lightweight, Qt based, desktop toolset
 * http://razor-qt.org, http://lxde.org/
 *
 * Copyright: 2010-2012 LXQt team
 * Authors:
 *   Petr Vanek <petr@scribus.info>
 *
 * This program or library is free software; you can redistribute it
 * and/or modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General
 * Public License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301 USA
 *
 * END_COMMON_COPYRIGHT_HEADER */

#include "basicsettings.h"
#include "ui_basicsettings.h"

#include "../lxqt-session/src/windowmanager.h"
#include "sessionconfigwindow.h"
#include "autostartutils.h"

static const QLatin1String windowManagerKey("window_manager");
static const QLatin1String leaveConfirmationKey("leave_confirmation");
static const QLatin1String lockBeforePowerActionsKey("lock_screen_before_power_actions");
static const QLatin1String openboxValue("openbox");

BasicSettings::BasicSettings(LXQt::Settings *settings, QWidget *parent) :
    QWidget(parent),
    m_settings(settings),
    m_moduleModel(new ModuleModel()),
    ui(new Ui::BasicSettings)
{
    ui->setupUi(this);
    connect(ui->findWmButton, SIGNAL(clicked()), this, SLOT(findWmButton_clicked()));
    connect(ui->startButton, SIGNAL(clicked()), this, SLOT(startButton_clicked()));
    connect(ui->stopButton, SIGNAL(clicked()), this, SLOT(stopButton_clicked()));
    restoreSettings();

    ui->moduleView->setModel(m_moduleModel);
    ui->moduleView->header()->setSectionResizeMode(0, QHeaderView::Stretch);
    ui->moduleView->header()->setSectionResizeMode(1, QHeaderView::ResizeToContents);
}

BasicSettings::~BasicSettings()
{
    delete ui;
}

void BasicSettings::restoreSettings()
{
    QStringList knownWMs;
    foreach (const WindowManager &wm, getWindowManagerList(true))
    {
        knownWMs << wm.command;
    }

    QString wm = m_settings->value(windowManagerKey, openboxValue).toString();
    SessionConfigWindow::handleCfgComboBox(ui->wmComboBox, knownWMs, wm);
    m_moduleModel->reset();

    ui->leaveConfirmationCheckBox->setChecked(m_settings->value(leaveConfirmationKey, false).toBool());
    ui->lockBeforePowerActionsCheckBox->setChecked(m_settings->value(lockBeforePowerActionsKey, true).toBool());
}

void BasicSettings::save()
{
    /*  If the setting actually changed:
     *      * Save the setting
     *      * Emit a needsRestart signal
     */

    bool doRestart = false;
    const QString windowManager = ui->wmComboBox->currentText();
    const bool leaveConfirmation = ui->leaveConfirmationCheckBox->isChecked();
    const bool lockBeforePowerActions = ui->lockBeforePowerActionsCheckBox->isChecked();

    QMap<QString, AutostartItem> previousItems(AutostartItem::createItemMap());
    QMutableMapIterator<QString, AutostartItem> i(previousItems);
    while (i.hasNext()) {
        i.next();
        if (!AutostartUtils::isLXQtModule(i.value().file()))
            i.remove();
    }


    if (windowManager != m_settings->value(windowManagerKey, openboxValue).toString())
    {
        m_settings->setValue(windowManagerKey, windowManager);
        doRestart = true;
    }


    if (leaveConfirmation != m_settings->value(leaveConfirmationKey, false).toBool())
    {
        m_settings->setValue(leaveConfirmationKey, leaveConfirmation);
        doRestart = true;
    }

    if (lockBeforePowerActions != m_settings->value(lockBeforePowerActionsKey, true).toBool())
    {
        m_settings->setValue(lockBeforePowerActionsKey, lockBeforePowerActions);
        doRestart = true;
    }

    QMap<QString, AutostartItem> currentItems = m_moduleModel->items();
    QMap<QString, AutostartItem>::const_iterator k = currentItems.constBegin();
    while (k != currentItems.constEnd())
    {
        if (previousItems.contains(k.key()))
        {
            if (k.value().file() != previousItems.value(k.key()).file())
            {
                doRestart = true;
                break;
            }
        }
        else
        {
            doRestart = true;
            break;
        }
        ++k;
    }

    if (doRestart)
        emit needRestart();

    m_moduleModel->writeChanges();
}

void BasicSettings::findWmButton_clicked()
{
    SessionConfigWindow::updateCfgComboBox(ui->wmComboBox, tr("Select a window manager"));
}

void BasicSettings::startButton_clicked()
{
    m_moduleModel->toggleModule(ui->moduleView->selectionModel()->currentIndex(), true);
}

void BasicSettings::stopButton_clicked()
{
    m_moduleModel->toggleModule(ui->moduleView->selectionModel()->currentIndex(), false);
}