/*
* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
* All rights reserved.
* This component and the accompanying materials are made available
* under the terms of "Eclipse Public License v1.0"
* which accompanies this distribution, and is available
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:
*
*/

#include <QProcess>
#include <QTranslator>
#include <QCoreApplication>
#include <HbInstance>
#include <HbAction>
#include <HbMessageBox>

#include "nmsettingsviewfactory.h"
#include "nmmailboxsettingsmanager.h"
#include "nmmailboxsettingview.h"
#include "nmmailboxselectionview.h"
#include "nmmailbox.h"
#include "nmcommon.h"
#include "nmsettingsviewlauncher.h"
#include "nmsettingscommon.h"

static const QString mailWizardStartExe = "mailwizard.exe";
static const QString mailWizardStartArgs = "from:controlpanel";


/*!
    \class NmSettingsViewFactory
    \brief Constructs and displays settings views.

*/


// ======== MEMBER FUNCTIONS ========

/*!
    Constructor of NmSettingsViewFactory.

    \param itemDataHelper
    \param text
    \param description
    \param icon
    \param parent
    \return A newly constructed settings view factory instance.
*/
NmSettingsViewFactory::NmSettingsViewFactory(
    CpItemDataHelper &itemDataHelper,
    const QString &text,
    const QString &description,
    const HbIcon &icon,
    const HbDataFormModelItem *parent)
 : CpSettingFormEntryItemData(itemDataHelper, text, description, icon, parent),
   mSettingsManager(new NmMailboxSettingsManager()), mSettingsViewLauncher(0),mPrevView(0)
{
}


/*!
    Constructor of NmSettingsViewFactory.

    \param viewLauncher
    \param itemDataHelper
    \param text
    \param description
    \param icon
    \param parent
    \return A newly constructed settings view factory instance.
*/
NmSettingsViewFactory::NmSettingsViewFactory(
    const NmSettingsViewLauncher *viewLauncher,
    CpItemDataHelper &itemDataHelper,
    const QString &text,
    const QString &description,
    const HbIcon &icon,
    const HbDataFormModelItem *parent)
 : CpSettingFormEntryItemData(itemDataHelper, text, description, icon, parent),
     mSettingsManager(new NmMailboxSettingsManager()), mSettingsViewLauncher(viewLauncher), mPrevView(0)
{
}


/*!
    Destructor of NmSettingsViewFactory.
*/
NmSettingsViewFactory::~NmSettingsViewFactory()
{
    delete mSettingsManager;
}


/*!
    Constructs a setting view. The type of the view depends on the number of
    mailboxes present. If there are no mailboxes defined, displays a query
    asking whether to user wants to define a new mailbox or not.

    \return A newly constructed setting view instance.
*/
CpBaseSettingView *NmSettingsViewFactory::createSettingView() const
{
    NMLOG(QString("NmSettingsViewFactory::createSettingView(): Begin."));

    CpBaseSettingView *view = 0;
    QList<NmMailbox *> mailboxList;
    mSettingsManager->listMailboxes(mailboxList);
    const int mailboxCount(mailboxList.count());

    // Log the number of mailboxes.
    NMLOG(QString("NmSettingsViewFactory::createSettingView(): Mailbox count is ") +
          QString::number(mailboxCount));

    if (mailboxCount == 0) {
        // Query the user whether to launch the wizard or not.
        HbMessageBox *messageBox = new HbMessageBox(HbMessageBox::MessageTypeQuestion);
        messageBox->setText(hbTrId("txt_mail_dialog_no_mailboxes_create_new"));
        messageBox->setTimeout(HbMessageBox::NoTimeout);

        // Read the user selection.
        HbAction *action = messageBox->exec();

        if (action == messageBox->primaryAction()) {
            // Launch mail wizard.
            NMLOG(QString("NmSettingsViewFactory::createSettingView(): Launching the mail wizard."));
            QStringList args;
            args << mailWizardStartArgs;
            QProcess::startDetached(mailWizardStartExe, args);
        }
    }
    else if (mailboxCount == 1) {
        // Construct setting view for the only available mailbox
        NmMailbox *mailbox = mailboxList.at(0);
        view = new NmMailboxSettingView(mailbox->id(),
                                        mailbox->name(),
                                        *mSettingsManager);
    }
    else if (mailboxCount > 1) {
        // Construct mailbox selection view
        view = new NmMailboxSelectionView(*this, *mSettingsManager, mailboxList);
    }

    if (view) {
        connect(mSettingsManager,
                SIGNAL(mailboxListChanged(const NmId &, NmSettings::MailboxEventType)),
                view, SLOT(mailboxListChanged(const NmId &, NmSettings::MailboxEventType)));

        connect(mSettingsManager,
                SIGNAL(mailboxPropertyChanged(const NmId &, QVariant, QVariant)),
                view, SLOT(mailboxPropertyChanged(const NmId &, QVariant, QVariant)));
    }

    NMLOG(QString("NmSettingsViewFactory::createSettingView(): End."));
    return view;
}


/*!
    Constructs and launches, i.e. displays a setting view for the given mailbox.

    \param mailboxId The id of the mailbox.
    \param mailboxName The name of the mailbox.
*/
void NmSettingsViewFactory::launchSettingView(const NmId &mailboxId,
                                              const QString &mailboxName) const
{
    NMLOG(QString("NmSettingsViewFactory::launchSettingView"));

    // There's always at least one valid main window available.
    HbMainWindow *mainWindow = hbInstance->allMainWindows().takeFirst();

    CpBaseSettingView *view =
        new NmMailboxSettingView(mailboxId, mailboxName, *mSettingsManager);

    connect(mSettingsManager,
            SIGNAL(mailboxListChanged(const NmId &, NmSettings::MailboxEventType)),
            view, SLOT(mailboxListChanged(const NmId &, NmSettings::MailboxEventType)));

    connect(mSettingsManager,
            SIGNAL(mailboxPropertyChanged(const NmId &, QVariant, QVariant)),
            view, SLOT(mailboxPropertyChanged(const NmId &, QVariant, QVariant)));

    // Disconnect mSettingsViewLauncher's previous connections to be sure that signals which are
    // offered out will be sent last.
    mSettingsManager->disconnect(
        SIGNAL(mailboxListChanged(const NmId &, NmSettings::MailboxEventType)),
        mSettingsViewLauncher,
        SIGNAL(mailboxListChanged(const NmId &, NmSettings::MailboxEventType)));

    mSettingsManager->disconnect(
        SIGNAL(mailboxPropertyChanged(const NmId &, QVariant, QVariant)),
        mSettingsViewLauncher,
        SIGNAL(mailboxPropertyChanged(const NmId &, QVariant, QVariant)));


    // Reconnect mSettingsViewLauncher.
    connect(mSettingsManager,
            SIGNAL(mailboxListChanged(const NmId &, NmSettings::MailboxEventType)),
            mSettingsViewLauncher,
            SIGNAL(mailboxListChanged(const NmId &, NmSettings::MailboxEventType)));

    connect(mSettingsManager,
            SIGNAL(mailboxPropertyChanged(const NmId &, QVariant, QVariant)),
            mSettingsViewLauncher,
            SIGNAL(mailboxPropertyChanged(const NmId &, QVariant, QVariant)));

    connect(mSettingsManager,
            SIGNAL(goOnline(const NmId &)),
            mSettingsViewLauncher,
            SIGNAL(goOnline(const NmId &)));

    connect(mSettingsManager,
            SIGNAL(goOffline(const NmId &)),
            mSettingsViewLauncher,
            SIGNAL(goOffline(const NmId &)));

    connect(this,
            SIGNAL(aboutToClose()),
            mSettingsManager,
            SIGNAL(aboutToClose()));

    // Create back navigation action for a view.
    HbAction *action = new HbAction(Hb::BackNaviAction, view);
    connect(action, SIGNAL(triggered()), this, SLOT(backPress()));
    view->setNavigationAction(action);
    mPrevView = mainWindow->currentView();
    mainWindow->addView(view);
    mainWindow->setCurrentView(view);

    NMLOG(QString("NmSettingsViewFactory::launchSettingView - OK"));
}


/*!
   Handles back button press.
   Removes the current view from the main window and activates the previous view.
   Destroys removed view.
*/
void NmSettingsViewFactory::backPress()
{
    NMLOG(QString("NmSettingsViewFactory::backPress"));

    emit aboutToClose();
    HbMainWindow *mainWindow = hbInstance->allMainWindows().takeFirst();
    QList<HbView *> views = mainWindow->views();
    if (views.count() > 1) {
        HbView *currentView = mainWindow->currentView();
        int indexOfView(views.indexOf(mPrevView));
        if (indexOfView > -1) {
            mainWindow->setCurrentView(views.at(indexOfView));
            mainWindow->removeView(currentView);
            currentView->deleteLater();
        }
        mPrevView = 0;
    }

    NMLOG(QString("NmSettingsViewFactory::backPress - OK"));
}

// End of file.