/*
* 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),
   mMessageBox(0)
{
    NM_FUNCTION;

    createMessageBox();
}


/*!
    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), mMessageBox(0)
{
    NM_FUNCTION;

    createMessageBox();
}


/*!
    Destructor of NmSettingsViewFactory.
*/
NmSettingsViewFactory::~NmSettingsViewFactory()
{
    NM_FUNCTION;

    delete mSettingsManager;
    delete mMessageBox;
}


/*!
    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
{
    NM_FUNCTION;

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

    // Log the number of mailboxes.
    NM_COMMENT(QString("NmSettingsViewFactory::createSettingView(): mailbox count is %1").arg(mailboxCount));

    switch(mailboxCount) {
        case 0: {
            // Query the user whether to launch the wizard or not.
            mMessageBox->open(const_cast<NmSettingsViewFactory *>(this),
                              SLOT(launchWizard(HbAction *)));
            break;
        }
        case 1: {
            // Construct setting view for the only available mailbox
            NmMailbox *mailbox = mailboxList.at(0);
            view = new NmMailboxSettingView(mailbox->id(),
                                            mailbox->name(),
                                            *mSettingsManager);
            break;
        }
        default: {
            // Construct mailbox selection view
            view = new NmMailboxSelectionView(*this, *mSettingsManager, mailboxList);
            break;
        }

    }

    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)));
    }

    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
{
    NM_FUNCTION;

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

    NmMailboxSettingView *currentSettingsView =
        qobject_cast<NmMailboxSettingView*>(mainWindow->currentView());

    // Let's have only one same settings view at a time open,
    // but if some other mailboxes settings view want's to open while
    // there is a settings view open let's open it also.
    if (!currentSettingsView || (currentSettingsView->mailboxId().id() != mailboxId.id())) {
        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 &)), Qt::UniqueConnection);

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

         connect(this,
                 SIGNAL(aboutToClose()),
                 mSettingsManager,
                 SIGNAL(aboutToClose()), Qt::UniqueConnection);

         // 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);
    }
}

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

    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;
    }
}

/*!
    Handles user selection from "No mailboxes defined" dialog. Launches the Mail Wizard if \a action
    is the dialog's primary action ("Yes"). Otherwise does nothing.
    \param action. Action selected by the user.
*/
void NmSettingsViewFactory::launchWizard(HbAction *action)
{
    NM_FUNCTION;

    if (action == mMessageBox->primaryAction()) {
        // Launch mail wizard.
        NM_COMMENT(QString("NmSettingsViewFactory::launchWizard(): launching the mail wizard"));
        QStringList args;
        args << mailWizardStartArgs;
        QProcess::startDetached(mailWizardStartExe, args);
    }
}

/*!
    Creates the "No mailboxes defined" dialog. Called from the constructors.
*/
void NmSettingsViewFactory::createMessageBox()
{
    NM_FUNCTION;

    mMessageBox = new HbMessageBox(HbMessageBox::MessageTypeQuestion);
    mMessageBox->setText(hbTrId("txt_mail_dialog_no_mailboxes_create_new"));
    mMessageBox->setTimeout(HbMessageBox::NoTimeout);
    mMessageBox->setStandardButtons(HbMessageBox::Yes | HbMessageBox::No);
}


// End of file.