/*

* 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 <QtGui>

#include <QGraphicsWidget>

#include <QSizePolicy>

#include <QGraphicsLinearLayout>

#include <hblabel.h>

#include <hbextendedlocale.h>

#include "hsclockwidget.h"

#include "hsanalogclockwidget.h"

#include "hsdigitalclockwidget.h"

#include "hsclockwidgetdocumentloader.h"

#ifdef Q_OS_SYMBIAN    

#include "hsclockwidgettype_symbian.h"

#endif

namespace

{

    const char ANALOG[] = "analog";

    const char DIGITAL[] = "digital";

    const char DIGITAL_CLOCK_DOCML[] = ":/xml/hsdigitalclockwidget.docml";

    const char ANALOG_CLOCK_DOCML[] = ":/xml/hsanalogclockwidget.docml";

    const char DIGITAL_CLOCK_WIDGET[] = "timeLabel";

    const char ANALOG_CLOCK_WIDGET[] = "analogClockWidget";

    const int clockUpdateInterval = 1000; // msec

}

/*!

    \class HsClockWidget

    \ingroup group_hsclockwidgetplugin

    \brief Implementation for the homescreen clock widget.

*/

/*!

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

    Constructs widget.

*/

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

    : HbWidget(parent, flags),

      mTimer(0),

      mClockType(ANALOG),

      mWidget(0),

      mLayout(0),

      mWidgetShown(false)

{

#if 0

#ifdef Q_OS_SYMBIAN    

    HsClockWidgetType *clockType = new HsClockWidgetType(this);

    mClockType=clockType->type();

    connect(clockType, SIGNAL(typeChanged(QString)), this, SLOT(onTypeChanged(QString)));

#endif    

#endif

}

/*!

    \fn HsClockWidget::~HsClockWidget()

    Destructor.

*/

HsClockWidget::~HsClockWidget()

{

}

/*!

    Returns the clock type.

*/

QString HsClockWidget::clockType() const

{

    return mClockType;

}

/*!

    Sets the clock type;

*/

void HsClockWidget::setClockType(const QString &type)

{

    if (type == DIGITAL) {

        mClockType = DIGITAL;

    } else {

        mClockType = ANALOG;

    }

}

/*!

    \fn void HsClockWidget::onInitialize()

    Initializes clock widget

*/

void HsClockWidget::onInitialize()

{

    mLayout = new QGraphicsLinearLayout(Qt::Vertical);

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

    hide();

    mWidget = loadClockWidget();

    mLayout->addItem(mWidget);

    setPreferredSize(mWidget->preferredSize());

    parentWidget()->resize(preferredSize()); // workaround for layouting

    mTimer = new QTimer(this);

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

    setLayout(mLayout);

}

/*!

    \fn void HsClockWidget::show()

    Shows the widget

*/

void HsClockWidget::onShow()

{

    mWidgetShown = true;

    mTimer->start(clockUpdateInterval);

    show();

}

/*!

    \fn void HsClockWidget::show()

    Hides the widget

*/

void HsClockWidget::onHide()

{

    mWidgetShown = false;

    mTimer->stop();

    hide();

}

/*!

    Uninitializes the widget.

*/

void HsClockWidget::onUninitialize()

{

    mTimer->stop();

    hide();

}

/*!

    \fn void HsClockWidget::updateTime()

    Draws the clock with every second

*/

void HsClockWidget::updateTime()

{

    if (mClockType == DIGITAL) {

        hide(); // workaround for clock not updating

        static_cast<HbLabel*>(mWidget)->setPlainText(

            HbExtendedLocale().format(QTime::currentTime(), r_qtn_time_usual_with_zero));

        show(); // workaround for clock not updating 

    } else {

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

    }

}

/*!

    Toggles the clock type.

*/

void HsClockWidget::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)

{

    Q_UNUSED(event);    

#ifndef Q_OS_SYMBIAN    

    mTimer->stop();

    toggleClockType();

    emit setPreferences(QStringList() << "clockType");

    hide();

    mLayout->removeItem(mWidget);

    delete mWidget;

    mWidget = 0;

    mWidget = loadClockWidget();

    mLayout->addItem(mWidget);

    setPreferredSize(mWidget->preferredSize());

    parentWidget()->resize(preferredSize());

    show();

    updateTime();

    update();

    mTimer->start(clockUpdateInterval);

#endif    

}

/*!

    Toggles the clock type.

*/

void HsClockWidget::toggleClockType()

{

    if (mClockType == ANALOG) {

        mClockType = DIGITAL;

    } else {

        mClockType = ANALOG;

    }

}

/*!

    Loads the digital or analog clock widget.

*/

HbWidget *HsClockWidget::loadClockWidget()

{

    HbWidget *clockWidget = 0;

    QString docmlFile;

    if (mClockType == DIGITAL) {

        docmlFile = DIGITAL_CLOCK_DOCML;

    } else {

        docmlFile = ANALOG_CLOCK_DOCML;

    }

    HsClockWidgetDocumentLoader loader;

    bool loaded = false;

    loader.load(docmlFile, &loaded);

    if (loaded) {

        if (mClockType == DIGITAL) {

            clockWidget = qobject_cast<HsDigitalClockWidget *>(loader.findWidget(DIGITAL_CLOCK_WIDGET));

            clockWidget->setBackgroundItem(HbStyle::P_Fade_background);

        } else {

            clockWidget = qobject_cast<HsAnalogClockWidget *>(loader.findWidget(ANALOG_CLOCK_WIDGET));

        }

    } else {

        qWarning() << "Unable to load clock widget from docml: " << docmlFile;

        // TODO: We must handle this error situation once error handling strategy is clear!

    }

    return clockWidget;

}

void HsClockWidget::onTypeChanged(QString type)

{

#if 0

    if (mClockType != type) {

        mTimer->stop();

        mClockType = type;

        emit setPreferences(QStringList() << "clockType");

        hide();

        mLayout->removeItem(mWidget);

        delete mWidget;

        mWidget = 0;

        mWidget = loadClockWidget();

        mLayout->addItem(mWidget);

        setPreferredSize(mWidget->preferredSize());

        parentWidget()->resize(preferredSize());

        if ( mWidgetShown ) {

            mTimer->start(clockUpdateInterval);

            show();

            }

    }    

#endif    

}