/****************************************************************************
**
** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (developer.feedback@nokia.com)
**
** This file is part of the HbCore module of the UI Extensions for Mobile.
**
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at developer.feedback@nokia.com.
**
****************************************************************************/

#include <QTime>
#include <hbtextitem.h>
#include <hbmainwindow.h>
#include <hbview.h>

#include "hbstatusbar_p.h"
#include "hbstatusbar_p_p.h"
#include "hbstyleoptionstatusbar_p.h"
#include "hbsignalindicator_p.h"
#include "hbbatteryindicator_p.h"
#include "hbindicatorgroup_p.h"

const int clockUpdateDelay = 10000; // 10 s

/*
    \class HbStatusBar
    \brief HbStatusBar is the class implementing statusbar decorator.
    Statusbar is a container for two indicator groups (left and right),
    a clock which is located in the middle of indicator groups and for
	a battery and signal status indicators.
 */

HbStatusBarPrivate::HbStatusBarPrivate() : 
    mTimeText(0),
    mTimeTextItem(0),
    mSignalIndicator(0),
    mBatteryIndicator(0),
    mNotificationIndicatorGroup(0),
    mSettingsIndicatorGroup(0),
    mMainWindow(0),
    mPreviousProperties(0)
{
}

void HbStatusBarPrivate::init()
{
    Q_Q(HbStatusBar);

    HbStyle::setItemName(q, "statusbar");

    mSignalIndicator = new HbSignalIndicator(q);
    q->style()->setItemName(mSignalIndicator, "signal");
    mBatteryIndicator = new HbBatteryIndicator(q);
    q->style()->setItemName(mBatteryIndicator, "battery");

    mNotificationIndicatorGroup = new HbIndicatorGroup(HbIndicatorGroup::NotificationType, q);
    q->style()->setItemName(mNotificationIndicatorGroup, "notificationindicators");
    q->connect(mNotificationIndicatorGroup, SIGNAL(notificationCountChanged(int)), 
        q, SIGNAL(notificationCountChanged(int)));

    mSettingsIndicatorGroup = new HbIndicatorGroup(HbIndicatorGroup::SettingsType, q);
    q->style()->setItemName(mSettingsIndicatorGroup, "settingsindicators");

	mClockTimerId = q->startTimer(clockUpdateDelay);

    q->connect(mMainWindow, SIGNAL(currentViewChanged(HbView*)), q, SLOT(currentViewChanged(HbView*)));

	updateTime();
}

void HbStatusBarPrivate::updateTime()
{
	// use QLocale to find out whether there is am/pm info
    QString timeFormat(QLocale().timeFormat(QLocale::ShortFormat));

    if(timeFormat.contains("ap", Qt::CaseInsensitive)) {
        timeFormat.clear();
        timeFormat.insert(0, "hh:mm ap");
    } else {
        timeFormat.clear();
        timeFormat.insert(0, "hh:mm");
    }

    QTime current = QTime::currentTime();

    // set time, using a proper formatting
    mTimeText = current.toString(timeFormat);
}

/*
    Constructor, the statusbar.
    The \a parent is an optional parameter.
*/
HbStatusBar::HbStatusBar(HbMainWindow *mainWindow, QGraphicsItem *parent)
    : HbWidget(*new HbStatusBarPrivate, parent)
{
    Q_D(HbStatusBar);
    d->q_ptr = this;
    d->mMainWindow = mainWindow;
    d->init();
    createPrimitives();
}

/*
    Destructor.
 */
HbStatusBar::~HbStatusBar()
{ 
	Q_D(HbStatusBar);

	if (d->mClockTimerId != 0) {
        killTimer(d->mClockTimerId);
        d->mClockTimerId = 0;
    }
}

void HbStatusBar::propertiesChanged()
{
    Q_D(HbStatusBar);
    if (d->mMainWindow && d->mMainWindow->currentView()) {
        currentViewChanged(d->mMainWindow->currentView());
    }
}

void HbStatusBar::createPrimitives()
{
    Q_D(HbStatusBar);

    d->mTimeTextItem = style()->createPrimitive(HbStyle::P_StatusBar_timetext, this);
    setBackgroundItem(HbStyle::P_StatusBar_background);
}

void HbStatusBar::updatePrimitives()
{
    Q_D(HbStatusBar);
	HbStyleOptionStatusBar option;

	initStyleOption(&option);
    style()->updatePrimitive(backgroundItem(), HbStyle::P_StatusBar_background, &option);
	style()->updatePrimitive(d->mTimeTextItem, HbStyle::P_StatusBar_timetext, &option);
}

/*
This slot is called when active HbView changes.
*/ 
void HbStatusBar::currentViewChanged(HbView *view)
{
    Q_D(HbStatusBar);
    // this can happpen when e.g. view is destroyed
    if (!view) {
        return;
    }

    // only do repolish if properties have changed
    if (d->mPreviousProperties != view->viewFlags()) {
        d->mPreviousProperties = view->viewFlags();
        repolish();
        updatePrimitives();
    }
}

void HbStatusBar::initStyleOption(HbStyleOptionStatusBar *option) const
{
    const Q_D(HbStatusBar);
	HbWidget::initStyleOption(option);

    option->timeText = d->mTimeText;

    if (mainWindow() && mainWindow()->currentView()) {
        if (mainWindow()->currentView()->viewFlags() & HbView::ViewStatusBarTransparent) {
            option->transparent = true;
        }
    }
}

void HbStatusBar::timerEvent(QTimerEvent *event)
{
    Q_D(HbStatusBar);
    if (event->timerId() == d->mClockTimerId) {
        d->updateTime(); // get current time
		updatePrimitives();
	}
}