/***************************************************************************
                          componentchooser.cpp  -  description
                             -------------------
    copyright            : (C) 2002 by Joseph Wenninger
    email                : jowenn@kde.org
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License verstion 2 as    *
 *   published by the Free Software Foundation                             *
 *                                                                         *
 ***************************************************************************/

#include "componentchooser.h"
#include "moc_componentchooser.cpp"

#include "componentchooseremail.h"
#include "componentchooserfilemanager.h"
#include "componentchooserterminal.h"
#ifdef Q_WS_X11
#include "componentchooserwm.h"
#endif

#include <QCheckBox>

#include <klocale.h>
#include <kmessagebox.h>
#include <kconfig.h>
#include <kstandarddirs.h>
#include <kmimetypetrader.h>
#include <kurlrequester.h>
#include <kconfiggroup.h>
#include <KServiceTypeTrader>

//BEGIN  General kpart based Component selection

CfgComponent::CfgComponent(QWidget *parent)
    : QWidget(parent), Ui::ComponentConfig_UI(), CfgPlugin()
{
    setupUi( this );
    connect(ComponentSelector,SIGNAL(activated(const QString&)),this,SLOT(slotComponentChanged(const QString&)));
}

CfgComponent::~CfgComponent()
{
}

void CfgComponent::slotComponentChanged(const QString&) {
    emit changed(true);
}

void CfgComponent::save(KConfig *cfg) {
    // yes, this can happen if there are NO KTrader offers for this component
    if (!m_lookupDict.contains(ComponentSelector->currentText()))
        return;

    KConfigGroup mainGroup = cfg->group(QByteArray());
    QString serviceTypeToConfigure=mainGroup.readEntry("ServiceTypeToConfigure");
    KConfig store(mainGroup.readPathEntry("storeInFile", "null"));
    KConfigGroup cg(&store, mainGroup.readEntry("valueSection"));
    cg.writePathEntry(mainGroup.readEntry("valueName", "kcm_componenchooser_null"),
                      m_lookupDict.value(ComponentSelector->currentText()));
    store.sync();
    emit changed(false);
}

void CfgComponent::load(KConfig *cfg) {

    ComponentSelector->clear();
    m_lookupDict.clear();
    m_revLookupDict.clear();

    const KConfigGroup mainGroup = cfg->group(QByteArray());
    const QString serviceTypeToConfigure = mainGroup.readEntry("ServiceTypeToConfigure");

    const KService::List offers = KServiceTypeTrader::self()->query(serviceTypeToConfigure);

    for (KService::List::const_iterator tit = offers.begin(); tit != offers.end(); ++tit) {
        ComponentSelector->addItem((*tit)->name());
        m_lookupDict.insert((*tit)->name(), (*tit)->desktopEntryName());
        m_revLookupDict.insert((*tit)->desktopEntryName(), (*tit)->name());
    }

    KConfig store(mainGroup.readPathEntry("storeInFile","null"));
    const KConfigGroup group(&store, mainGroup.readEntry("valueSection"));
    QString setting = group.readEntry(mainGroup.readEntry("valueName", "kcm_componenchooser_null"), QString());

    if (setting.isEmpty())
        setting = mainGroup.readEntry("defaultImplementation", QString());
    QString tmp = m_revLookupDict.value(setting);
    if (!tmp.isEmpty()) {
        for (int i = 0;i < ComponentSelector->count(); i++) {
            if (tmp == ComponentSelector->itemText(i)) {
                ComponentSelector->setCurrentIndex(i);
                break;
            }
        }
    }
    emit changed(false);
}

void CfgComponent::defaults()
{
    //todo
}

//END  General kpart based Component selection


ComponentChooser::ComponentChooser(QWidget *parent):
    QWidget(parent), Ui::ComponentChooser_UI(), somethingChanged(false), configWidget(0)
{
    setupUi(this);
    static_cast<QGridLayout*>(layout())->setRowStretch(1, 1);

    const QStringList services = KGlobal::dirs()->findAllResources(
        "data","kcm_componentchooser/*.desktop",
        KStandardDirs::NoDuplicates
    );
    for (QStringList::const_iterator it = services.constBegin(); it!=services.constEnd(); ++it) {
            KConfig cfg(*it, KConfig::SimpleConfig);
            KConfigGroup cg = cfg.group(QByteArray());
            QListWidgetItem *item = new QListWidgetItem(
                KIcon(cg.readEntry("Icon",QString("preferences-desktop-default-applications"))), 
                cg.readEntry("Name",i18n("Unknown"))
            );
            item->setData(Qt::UserRole, (*it));
            ServiceChooser->addItem(item);
    }
    ServiceChooser->setFixedWidth(ServiceChooser->sizeHintForColumn(0) + 20);
    ServiceChooser->sortItems();
    connect(
        ServiceChooser, SIGNAL(currentItemChanged(QListWidgetItem*, QListWidgetItem*)),
        this, SLOT(slotServiceSelected(QListWidgetItem*))
    );
    ServiceChooser->setCurrentRow(0);
    slotServiceSelected(ServiceChooser->item(0));

}

void ComponentChooser::slotServiceSelected(QListWidgetItem* it)
{
    if (!it)
        return;

    if (somethingChanged) {
        const int yesorno = KMessageBox::questionYesNo(
            this,
            i18n("<qt>You changed the default component of your choice, do want to save that change now ?</qt>"),
            QString(),
            KStandardGuiItem::save(),
            KStandardGuiItem::discard()
        );
        if (yesorno == KMessageBox::Yes) {
            save();
        }
    }
    KConfig cfg(it->data(Qt::UserRole).toString(), KConfig::SimpleConfig);

    ComponentDescription->setText(cfg.group(QByteArray()).readEntry("Comment", i18n("No description available")));
    ComponentDescription->setMinimumSize(ComponentDescription->sizeHint());


    QString cfgType=cfg.group(QByteArray()).readEntry("configurationType");
    QWidget *newConfigWidget = 0;
    if (cfgType.isEmpty() || (cfgType=="component")) {
        if (!(configWidget && qobject_cast<CfgComponent*>(configWidget))) {
            CfgComponent* cfgcomp = new CfgComponent(configContainer);
            cfgcomp->ChooserDocu->setText(i18n("Choose from the list below which component should be used by default for the %1 service.", it->text()));
            newConfigWidget = cfgcomp;
        } else {
            static_cast<CfgComponent*>(configWidget)->ChooserDocu->setText(i18n("Choose from the list below which component should be used by default for the %1 service.", it->text()));
        }
    } else if (cfgType=="internal_email") {
        if (!(configWidget && qobject_cast<CfgEmailClient*>(configWidget))) {
            newConfigWidget = new CfgEmailClient(configContainer);
        }
    } else if (cfgType=="internal_terminal") {
        if (!(configWidget && qobject_cast<CfgTerminalEmulator*>(configWidget))) {
                newConfigWidget = new CfgTerminalEmulator(configContainer);
        }
    } else if (cfgType=="internal_wm") {
        if (!(configWidget && qobject_cast<CfgWm*>(configWidget))) {
            newConfigWidget = new CfgWm(configContainer);
        }
    } else if (cfgType=="internal_filemanager") {
        if (!(configWidget && qobject_cast<CfgFileManager*>(configWidget))) {
            newConfigWidget = new CfgFileManager(configContainer);
        }
    }

    if (newConfigWidget) {
        configContainer->addWidget(newConfigWidget);
        configContainer->setCurrentWidget (newConfigWidget);
        configContainer->removeWidget(configWidget);
        delete configWidget;
        configWidget=newConfigWidget;
        connect(configWidget,SIGNAL(changed(bool)),this,SLOT(emitChanged(bool)));
        configContainer->setMinimumSize(configWidget->sizeHint());
    }

    if (configWidget) {
        dynamic_cast<CfgPlugin*>(configWidget)->load(&cfg);
    }

    emitChanged(false);
    latestEditedService=it->data(Qt::UserRole).toString();
}

void ComponentChooser::emitChanged(bool val)
{
    somethingChanged=val;
    emit changed(val);
}


ComponentChooser::~ComponentChooser()
{
    delete configWidget;
}

void ComponentChooser::load()
{
    if( configWidget ) {
        CfgPlugin * plugin = dynamic_cast<CfgPlugin*>(configWidget);
        if (plugin) {
            KConfig cfg(latestEditedService, KConfig::SimpleConfig);
            plugin->load(&cfg);
        }
    }
}

void ComponentChooser::save()
{
    if(configWidget) {
        CfgPlugin* plugin = dynamic_cast<CfgPlugin*>(configWidget);
        if (plugin) {
            KConfig cfg(latestEditedService, KConfig::SimpleConfig);
            plugin->save(&cfg);
        }
    }
}

void ComponentChooser::restoreDefault()
{
    if (configWidget) {
        dynamic_cast<CfgPlugin*>(configWidget)->defaults();
        emitChanged(true);
    }

/*
    txtEMailClient->setText("kmail");
    chkRunTerminal->setChecked(false);

    // Check if -e is needed, I do not think so
    terminalLE->setText("xterm");  //No need for i18n
    terminalCB->setChecked(true);
    emitChanged(false);
*/
}

// vim: sw=4 ts=4 noet