/*
    SPDX-FileCopyrightText: 2017 Łukasz Wojniłowicz <lukasz.wojnilowicz@gmail.com>
    SPDX-License-Identifier: GPL-2.0-or-later
*/

#include "ksettingsicons.h"

// ----------------------------------------------------------------------------
// QT Includes

#include <QIcon>
#include <QDir>

// ----------------------------------------------------------------------------
// KDE Includes

// ----------------------------------------------------------------------------
// Project Includes

#include "ui_ksettingsicons.h"

class KSettingsIconsPrivate
{
    Q_DISABLE_COPY(KSettingsIconsPrivate)

public:
    KSettingsIconsPrivate() :
        ui(new Ui::KSettingsIcons)
    {
    }

    ~KSettingsIconsPrivate()
    {
        delete ui;
    }

    Ui::KSettingsIcons *ui;
    QMap<int, QString>  m_themesMap;
};

KSettingsIcons::KSettingsIcons(QWidget* parent) :
    QWidget(parent),
    d_ptr(new KSettingsIconsPrivate)
{
    Q_D(KSettingsIcons);
    d->ui->setupUi(this);
    // hide the internally used holidayRegion field
    d->ui->kcfg_IconsTheme->hide();

    loadList();

    // setup connections so that region gets selected once field is filled
    connect(d->ui->kcfg_IconsTheme, &QLineEdit::textChanged, this, &KSettingsIcons::slotLoadTheme);

    // setup connections so that changes are forwarded to the field
    connect(d->ui->m_IconsTheme,
            static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &KSettingsIcons::slotSetTheme);
}

KSettingsIcons::~KSettingsIcons()
{
    Q_D(KSettingsIcons);
    delete d;
}

void KSettingsIcons::loadList()
{
    Q_D(KSettingsIcons);
    QStringList themes {QStringLiteral("oxygen"), QStringLiteral("Tango"), QStringLiteral("breeze"), QStringLiteral("breeze-dark")};
    QStringList searchPaths = QIcon::themeSearchPaths();
    d->ui->m_IconsTheme->addItem(QStringLiteral("system"));
    d->m_themesMap.insert(0, QStringLiteral("system"));
    for (auto i = 0; i < searchPaths.count(); ++i) {
        for (int j = 0; j < themes.count(); ++j) {
            QDir themeDir = QDir(searchPaths.at(i)).filePath(themes.at(j));
            if (themeDir.exists(QStringLiteral("index.theme"))) {
                d->ui->m_IconsTheme->addItem(themes.at(j));
                d->m_themesMap.insert(d->m_themesMap.count(), themes.at(j));
            }
        }
    }
}

void KSettingsIcons::slotSetTheme(const int &theme)
{
    Q_D(KSettingsIcons);
    d->ui->kcfg_IconsTheme->setText(d->m_themesMap.value(theme));
}

void KSettingsIcons::slotLoadTheme(const QString &theme)
{
    Q_D(KSettingsIcons);
    // only need this once
    disconnect(d->ui->kcfg_IconsTheme, &QLineEdit::textChanged, this, &KSettingsIcons::slotLoadTheme);
    auto i = 0;
    if (!theme.isEmpty())
        i = d->ui->m_IconsTheme->findText(theme);
    if ((i > -1) && (i != d->ui->m_IconsTheme->currentIndex())) {
        d->ui->m_IconsTheme->blockSignals(true);
        d->ui->m_IconsTheme->setCurrentIndex(i);
        d->ui->m_IconsTheme->blockSignals(false);
    }
}

void KSettingsIcons::slotResetTheme()
{
    Q_D(KSettingsIcons);
    slotLoadTheme(d->ui->kcfg_IconsTheme->text());
}
