/* This file is part of the KDE libraries
    Copyright (C) 2004 Frans Englich <frans.englich@telia.com>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 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
    Library General Public License for more details.

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

#include "kcmodulecontainer.h"
#include "moc_kcmodulecontainer.cpp"

#include <QtGui/QLayout>
#include <QtGui/QPixmap>
#include <QtCore/QStringList>

#include <kcmodule.h>
#include <kcmoduleinfo.h>
#include <kcmoduleloader.h>
#include <kcmoduleproxy.h>
#include <kdebug.h>
#include <kdialog.h>
#include <kglobal.h>
#include <kguiitem.h>
#include <kicon.h>
#include <kiconloader.h>
#include <kpushbutton.h>
#include <kservice.h>
#include <kstandardguiitem.h>
#include <ktabwidget.h>

/***********************************************************************/
class KCModuleContainer::KCModuleContainerPrivate
{
public:
    KCModuleContainerPrivate(const QStringList &mods)
        : modules(mods),
        tabWidget(nullptr),
        topLayout(nullptr)
    {
    }

    QStringList modules;
    KTabWidget *tabWidget;
    KCModule::Buttons buttons;
    QVBoxLayout *topLayout;
};
/***********************************************************************/


// The KCModuleContainer is only a wrapper around real KCModules. Therefore it doesn't need a
// special KComponentData and can just use the global instance. The contained KCModules create their own
// KComponentData objects when needed.
/***********************************************************************/
KCModuleContainer::KCModuleContainer(QWidget *parent, const QString &mods)
    : KCModule( KGlobal::mainComponent(), parent ),
    d(new KCModuleContainerPrivate(QString(mods).remove(' ').split(',', QString::SkipEmptyParts)))
{
    init();
}

KCModuleContainer::KCModuleContainer(QWidget *parent, const QStringList &mods)
    : KCModule( KGlobal::mainComponent(), parent),
    d(new KCModuleContainerPrivate(mods))
{
    init();
}

void KCModuleContainer::init()
{
    d->topLayout = new QVBoxLayout(this);
    d->topLayout->setMargin(0);
    d->topLayout->setObjectName("topLayout");
    d->tabWidget = new KTabWidget(this);
    d->tabWidget->setObjectName("tabWidget");
    connect(d->tabWidget, SIGNAL(currentChanged(int)), SLOT(tabSwitched(int)));
    d->topLayout->addWidget(d->tabWidget);

    if (!d->modules.isEmpty()) {
        /* Add our modules */
        foreach (const QString it, d->modules) {
            addModule(it);
        }
    }
}

void KCModuleContainer::addModule(const QString &module)
{
    /* In case it doesn't exist we just silently drop it.
     * This allows people to easily extend containers.
     * For example, KCM monitor gamma can be in kdegraphics.
     */
    KService::Ptr service = KService::serviceByDesktopName(module);
    if (!service) {
        kDebug(713) << "KCModuleContainer: module '"
                    << module << "' was not found and thus not loaded";
        return;
    }

    if (service->noDisplay()) {
        return;
    }

    KCModuleProxy* proxy = new KCModuleProxy(service, d->tabWidget);
    allModules.append(proxy);

    proxy->setObjectName(module.toLatin1());

    d->tabWidget->addTab(
        proxy, KIcon(proxy->moduleInfo().icon()),
        /* Katie eats ampersands for dinner. But not this time. */
        proxy->moduleInfo().moduleName().replace('&', "&&")
    );

    d->tabWidget->setTabToolTip(d->tabWidget->indexOf(proxy), proxy->moduleInfo().comment());

    connect(proxy, SIGNAL(changed(KCModuleProxy*)), SLOT(moduleChanged(KCModuleProxy*)));

    /* Collect our buttons - we go for the common deliminator */
    setButtons(buttons() | proxy->realModule()->buttons());
}

void KCModuleContainer::tabSwitched(int index)
{
    KCModuleProxy* mod = static_cast<KCModuleProxy*>(d->tabWidget->widget(index));
    setQuickHelp(mod->quickHelp());
    setAboutData(mod->aboutData());
}

void KCModuleContainer::save()
{
    ModuleList list = changedModules;
    ModuleList::iterator it;
    for ( it = list.begin() ; it !=list.end() ; ++it ) {
        (*it)->save();
    }

    emit changed( false );

}

void KCModuleContainer::load()
{
    ModuleList list = allModules;
    ModuleList::iterator it;
    for ( it = list.begin() ; it !=list.end() ; ++it ) {
        (*it)->load();
    }

    emit changed( false );
}

void KCModuleContainer::defaults()
{
    ModuleList list = allModules;
    ModuleList::iterator it;
    for (it = list.begin() ; it !=list.end() ; ++it) {
        (*it)->defaults();
    }

    emit changed( true );
}

void KCModuleContainer::moduleChanged(KCModuleProxy *proxy)
{
    changedModules.append(proxy);
    if (changedModules.isEmpty()) {
        return;
    }

    emit changed(true);
}

KCModuleContainer::~KCModuleContainer()
{
    delete d;
}