/*

* Copyright (c) 2008 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:  Clock widget

*

*/

#include <QTimer>

#include <QGraphicsLinearLayout>

#include "hsclockwidget.h"

#include "hsanalogclockwidget.h"

#include "hsdigitalclockwidget.h"

#ifdef Q_OS_SYMBIAN    

#include "hsclocksettingsnotifier_symbian.h"

#include <apgtask.h>

#include <eikenv.h>

#endif //Q_OS_SYMBIAN

namespace

{

    const char ANALOG[] = "analog";

    const char DIGITAL[] = "digital";

    const char TIME12[] = "TIME12";

    const char TIME24[] = "TIME24";

    const int clockUpdateInterval = 1000; // msec

}

#ifdef Q_OS_SYMBIAN

#define KClockAppUid TUid::Uid(0x10005903)

_LIT (KClockAppExe, "clock.exe");

#endif //Q_OS_SYMBIAN

/*!

    \class HsClockWidget

    \ingroup group_hsclockwidgetplugin

    \brief Implementation for the homescreen clock widget.

*/

/*!

    Constructs widget.

*/

HsClockWidget::HsClockWidget(QGraphicsItem *parent, Qt::WindowFlags flags)

  : HbWidget(parent, flags),

    mWidget(0),

    mLayout(0),

    mTimer(0),

    mClockType(ANALOG),

    mTimeType(TIME12)

{

#ifdef Q_OS_SYMBIAN    

    mClockSettingsNotifier = new HsClockSettingsNotifier(this);

    mClockType = mClockSettingsNotifier->clockFormat();

    mTimeType = mClockSettingsNotifier->timeFormat();

#endif

}

/*!

    Destructor.

*/

HsClockWidget::~HsClockWidget()

{

}

/*!

    Initializes this widget.

*/

void HsClockWidget::onInitialize()

{

    mLayout = new QGraphicsLinearLayout(Qt::Vertical);

    mLayout->setContentsMargins(0, 0, 0, 0);

    mWidget = loadClockWidget();

    mLayout->addItem(mWidget);   

    mTimer = new QTimer(this);

    connect(mTimer, SIGNAL(timeout()), SLOT(updateTime()));

    setLayout(mLayout);

#ifdef Q_OS_SYMBIAN  

    connect(mClockSettingsNotifier, SIGNAL(settingsChanged(QString, QString)), this, SLOT(onSettingsChanged(QString, QString)));

#endif    

}

/*!

    Shows this widget.

*/

void HsClockWidget::onShow()

{    

    mTimer->start(clockUpdateInterval);

}

/*!

    Hides this widget.

*/

void HsClockWidget::onHide()

{

    mTimer->stop();

}

/*!

    Uninitializes this widget.

*/

void HsClockWidget::onUninitialize()

{

    mTimer->stop();

}

/*!

    Draws the clock with every second.

*/

void HsClockWidget::updateTime()

{

    if (mClockType == DIGITAL) {

        static_cast<HsDigitalClockWidget*>(mWidget)->tick();

    } else {

        static_cast<HsAnalogClockWidget*>(mWidget)->tick();

    }

}

/*!

    \internal

*/

void HsClockWidget::onSettingsChanged(const QString &clockFormat, const QString &timeFormat)

{

    if (mClockType != clockFormat) {        

        mClockType = clockFormat;

        mLayout->removeItem(mWidget);

        delete mWidget;

        mWidget = 0;

        mWidget = loadClockWidget();

        mLayout->addItem(mWidget);        

    }    

    if (mTimeType != timeFormat) {

        mTimeType = timeFormat;

        if (mClockType == DIGITAL) {

            if (mTimeType == TIME12) {

                static_cast<HsDigitalClockWidget*>(mWidget)->setAmPm(true);

            } else {

            static_cast<HsDigitalClockWidget*>(mWidget)->setAmPm(false);

            }    

        }

    }

}

/*!

    Clock tapped.

*/

void HsClockWidget::onClockTapped()

{

#ifndef Q_OS_SYMBIAN

    if (mClockType == ANALOG) {

        mClockType = DIGITAL;

        if (mTimeType == TIME12) {

            mTimeType = TIME24;

        } else {

            mTimeType = TIME12;

        }    

    } else {

        mClockType = ANALOG;

    }

    mLayout->removeItem(mWidget);

    delete mWidget;

    mWidget = 0;

    mWidget = loadClockWidget();

    mLayout->addItem(mWidget); 

    updateTime();

#else //Q_OS_SYMBIAN

    TApaTaskList taskList(CEikonEnv::Static()->WsSession());    

    TApaTask task = taskList.FindApp(KClockAppUid);    

    if (task.Exists()){

        task.BringToForeground();

    }    

    else {

        RProcess process;

        TInt error = process.Create(KClockAppExe, KNullDesC, EOwnerThread);

        if (error == KErrNone){

            // start the process running.

            process.Resume();

            process.Close();

        }

    }

#endif //Q_OS_SYMBIAN   

}

/*!

    Loads the digital or analog clock widget.

*/

HbWidget *HsClockWidget::loadClockWidget()

{

    HbWidget *clockWidget = 0;

    if (mClockType == DIGITAL) {

        bool useAmPm = true;

        if (mTimeType == TIME24) {

            useAmPm = false;

        }   

        clockWidget = new HsDigitalClockWidget(useAmPm);

    } else {

        clockWidget = new HsAnalogClockWidget();

    }

    connect(clockWidget, SIGNAL(clockTapped()), this, SLOT(onClockTapped()), Qt::QueuedConnection);

    return clockWidget;

}