/*

* 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: Home screen shortcut widget.

*

*/

#include <QGraphicsSceneMouseEvent>

#include <HbStyleLoader>

#include <HbFrameItem>

#include <HbFrameDrawer>

#include <HbIconItem>

#include <HbTextItem>

#include <HbInstantFeedback>

#include <HbTapGesture>

#include "hsshortcutwidget.h"

#include "hsshortcutservice.h"

#include "hsapp_defs.h"

#include "caservice.h"

#include "canotifier.h"

#include "caquery.h"

#include "hsconfiguration.h"

/*!

    \class HsShortcutWidget

    \ingroup group_hsshortcutwidgetplugin

    \brief Implementation for the homescreen shortcut widget.

    Shortcut can be defined to launch different applications or applications

    with parameters, for example browser with certain url.

*/

/*!

    Constructor.

*/

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

  : HbWidget(parent, flags),

    mBackground(0), mIcon(0), mText(0),

    mCaEntryId(-1), mCaEntryRole(ItemEntryRole)

{

    grabGesture(Qt::TapGesture);

    HbStyleLoader::registerFilePath(":/hsshortcutwidget.widgetml");

    HbStyleLoader::registerFilePath(":/hsshortcutwidget.css");

    createPrimitives();

}

/*!

    Destructor.

*/

HsShortcutWidget::~HsShortcutWidget()

{

    HbStyleLoader::unregisterFilePath(":/hsshortcutwidget.widgetml");

    HbStyleLoader::unregisterFilePath(":/hsshortcutwidget.css");

}

/*!

    Sets the menu content service id.

*/

void HsShortcutWidget::setCaEntryId(int caEntryId)

{

    mCaEntryId = caEntryId;

}

/*!

    Returns the menu content service id.

*/

int HsShortcutWidget::caEntryId() const

{

    return mCaEntryId;

}

/*!

    Sets the application's UID this shortcut points to.

*/

void HsShortcutWidget::setUid(const QString &uid)

{

    mUid = uid;

}

/*!

    Returns the application's UID this shortcut points to.

*/

QString HsShortcutWidget::uid() const

{

    return mUid;

}

/*!

    Returns the text property. This property is needed by css selector.

*/

QString HsShortcutWidget::text() const

{

    if ( mText ) {

        return mText->text();

    } else {

        return QString();

        }

}

/*!

    Sets the text property. This property is needed by css selector.

*/

void HsShortcutWidget::setText(const QString& textItem)

{

    if ( mText ) {

        mText->setText(textItem);

    }

}

/*!

    Initializes this widget.

*/

void HsShortcutWidget::onInitialize()

{

    QSharedPointer<CaEntry> caEntry;

    if(-1 == mCaEntryId) {

        //Shortcut can be pre installed to Homescreen's DB by setting

        //application UID for its preference. Entry Id is retrieved

        //from CA by UID.

        CaQuery query;

        //Convert UID from hex to ten base, because CA t UIDs in ten base.

        bool ok;

        int hexBaseInteger = mUid.toInt(&ok, 0); // Qt Assistant: If base is 0, the C language convention is used:

                                             // If the string begins with "0x", base 16 is used.

        QString tenBaseString = QString::number(hexBaseInteger);

        QList< QSharedPointer<CaEntry> > appEntries = CaService::instance()->getEntries(query);

        //Verify that entry's UID is what we want since we get all application entries

        //if UID did not match in getEntries() above.

        if (!appEntries.isEmpty()

            caEntry = appEntries.first();

            mCaEntryId = caEntry->id();

			//Save caEntryId to Homescreen database

            emit setPreferences(QStringList() << QLatin1String("caEntryId"));

        }

    } else {

        caEntry = CaService::instance()->getEntry(mCaEntryId);

    }

    if (!caEntry.isNull()) {

        createCaNotifier();

        updateContent(*caEntry.data());

    } else {

        emit finished();

    }

}

/*!

    Wakes up this widget.

*/

void HsShortcutWidget::onShow()

{

    updateVisibility();

}

/*!

    Puts this widget in quiescent state.

*/

void HsShortcutWidget::onHide()

{

}

/*!

    \internal  

*/

#ifdef COVERAGE_MEASUREMENT

#pragma CTC SKIP

#endif //COVERAGE_MEASUREMENT

void HsShortcutWidget::gestureEvent(QGestureEvent *event)

{

    HbTapGesture *gesture = qobject_cast<HbTapGesture *>(event->gesture(Qt::TapGesture));

    if (gesture) {

        switch (gesture->state()) {

            case Qt::GestureStarted:

                setBackgroundToPressed();

                break;            

            case Qt::GestureCanceled:

                setBackgroundToNormal();

                break;

            case Qt::GestureFinished:

                setBackgroundToNormal();

                if (gesture->tapStyleHint() == HbTapGesture::Tap) {

                    launch();

                }

                break;

            default:

                break;

        }

    }

}

#ifdef COVERAGE_MEASUREMENT

#pragma CTC ENDSKIP

#endif //COVERAGE_MEASUREMENT

/*!

    \internal

*/

void HsShortcutWidget::launch()

{

    HbInstantFeedback::play(HSCONFIGURATION_GET(shortcutWidgetTapFeedbackEffect));

    if (mCaEntryRole == ItemEntryRole) {

        CaService::instance()->executeCommand(mCaEntryId);

    } else {

        HsShortcutService::instance()->executeCollectionAction(mCaEntryId, mCaEntryTypeName);

    }

}

/*!

    \internal

*/

void HsShortcutWidget::createPrimitives()

{

    // Background

    if (!mBackground) {

        HbFrameDrawer *drawer = new HbFrameDrawer(

            QLatin1String("qtg_fr_hsshortcut_normal"), HbFrameDrawer::NinePieces);

        mBackground = new HbFrameItem(drawer, this);

        HbStyle::setItemName(mBackground, QLatin1String("background"));

    }

    // Icon

    if (!mIcon) {

        mIcon = new HbIconItem(this);

        HbStyle::setItemName(mIcon, QLatin1String("icon"));

    }

    // Text

    if (HSCONFIGURATION_GET(isShortcutLabelVisible) && !mText ) {

        mText = new HbTextItem(this);

        HbStyle::setItemName(mText, QLatin1String("text"));

    }

}

/*!

    \internal

*/

void HsShortcutWidget::updateContent(const CaEntry &caEntry)

{

    mCaEntryRole = caEntry.role();

    mCaEntryFlags = caEntry.flags();

    mCaEntryTypeName = caEntry.entryTypeName();

    mIcon->setIcon(caEntry.makeIcon());

    if (mText) {

        } else {

            mText->setText(caEntry.text());

        }        

    }

}

/*!

    \internal

*/

void HsShortcutWidget::updateVisibility()

{

    setVisible(!mCaEntryFlags.testFlag(MissingEntryFlag));

}

/*!

    \internal

*/

void HsShortcutWidget::setBackgroundToNormal()

{

    mBackground->frameDrawer().

        setFrameGraphicsName(QLatin1String("qtg_fr_hsshortcut_normal"));

}

/*!

    \internal

*/

void HsShortcutWidget::setBackgroundToPressed()

{

    mBackground->frameDrawer().

        setFrameGraphicsName(QLatin1String("qtg_fr_hsitems_pressed"));

}

/*!

    \internal

*/

void HsShortcutWidget::createCaNotifier()

{

    CaNotifierFilter filter;

    filter.setIds(QList<int>() << mCaEntryId);

    CaNotifier *notifier = CaService::instance()->createNotifier(filter);

    notifier->setParent(this);

    connect(notifier,

        SIGNAL(entryChanged(CaEntry,ChangeType)),

        SLOT(onEntryChanged(CaEntry,ChangeType)),

        Qt::QueuedConnection);

}

/*!

    \internal

*/

void HsShortcutWidget::onEntryChanged(const CaEntry &caEntry, ChangeType changeType)

{

    updateContent(caEntry);

    updateVisibility();

    if ( changeType == RemoveChangeType && !(caEntry.flags() & MissingEntryFlag)) {

        //genuinely removed

        emit finished();

    }

}