/*

* Copyright (c) 2009 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 "hswallpaperselectionstate.h"

#include "hsspinnerdialog.h"

#include "hsscene.h"

#include "hspage.h"

#include "hswallpaper.h"

#include "hsconfiguration.h"

#ifdef Q_OS_SYMBIAN

#include "hsimagefetcherclient.h"

#else

#include "xqaiwgetimageclient.h"

#endif

// Helper macros for connecting state entry and exit actions.

#define ENTRY_ACTION(state, action) \

    connect(state, SIGNAL(entered()), SLOT(action()));

#define EXIT_ACTION(state, action) \

    connect(state, SIGNAL(exited()), SLOT(action()));

/*!

    \class HsWallpaperSelectionState

    \ingroup group_hshomescreenstateplugin

    \brief 

*/

/*!

*/

HsWallpaperSelectionState::HsWallpaperSelectionState(QState *parent)

  : QState(parent),    

    mImageFetcher(0),

    mWallpaper(0),    

    mWaitDialog(0)

{

    setupStates();

}

/*!

*/

HsWallpaperSelectionState::~HsWallpaperSelectionState()

{

}

/*!

*/

void HsWallpaperSelectionState::setupStates()

{

    // States

    QState *state_processing = new QState(this);

    QState *state_selectingImage = new QState(state_processing);

    QState *state_assigningImage = new QState(state_processing);

    QState *state_errorMessage = new QState(this);

    setInitialState(state_processing);

    state_processing->setInitialState(state_selectingImage);

    // Transitions

    state_selectingImage->addTransition(

        this, SIGNAL(event_assignImage()), state_assigningImage);

    state_processing->addTransition(

        this, SIGNAL(event_error()), state_errorMessage);

    // Actions

    ENTRY_ACTION(state_selectingImage, action_selectingImage_start)

    EXIT_ACTION(state_selectingImage, action_selectingImage_cleanup)

    ENTRY_ACTION(state_assigningImage, action_assigningImage_showWaitDialog)

    ENTRY_ACTION(state_assigningImage, action_assigningImage_start)

    EXIT_ACTION(state_assigningImage, action_assigningImage_cleanup)

    EXIT_ACTION(state_assigningImage, action_assigningImage_hideWaitDialog)

    ENTRY_ACTION(state_errorMessage, action_errorMessage_show)

}

/*!

*/

void HsWallpaperSelectionState::action_selectingImage_start()

{

#ifdef Q_OS_SYMBIAN

    mImageFetcher = new HsImageFetcherClient;

#else    

    mImageFetcher = new XQAIWGetImageClient;

#endif

    connect(mImageFetcher, SIGNAL(fetchCompleted(const QString&)),

            this, SLOT(onFetchCompleted(const QString&)));

    connect(mImageFetcher, SIGNAL(fetchFailed(int, const QString&)),

            this, SLOT(onFetchFailed(int, const QString&)));

    mImageFetcher->fetch();

}

/*!

*/

void HsWallpaperSelectionState::action_selectingImage_cleanup()

{

    mImageFetcher->disconnect(this);

    mImageFetcher->deleteLater();

    mImageFetcher = 0;

}

/*!

*/

void HsWallpaperSelectionState::action_assigningImage_showWaitDialog()

{

    mWaitDialog = new HsSpinnerDialog;

    mWaitDialog->start();

}

/*!

*/

void HsWallpaperSelectionState::action_assigningImage_start()

{

    HsScene *scene = HsScene::instance();

    if (HSCONFIGURATION_GET(sceneType) == HsConfiguration::SceneWallpaper) {

        mWallpaper = scene->wallpaper();

    } else {

        mWallpaper = scene->activePage()->wallpaper();

    }

    connect(mWallpaper, SIGNAL(imageSet()), SLOT(onImageSet()));

    connect(mWallpaper, SIGNAL(imageSetFailed()), SLOT(onImageSetFailed()));

    mWallpaper->setImage(mImagePath);

}

/*!

*/

void HsWallpaperSelectionState::action_assigningImage_cleanup()

{

    mWallpaper->disconnect(this);

    mWallpaper = 0;

}

/*!

*/

void HsWallpaperSelectionState::action_assigningImage_hideWaitDialog()

{

    mWaitDialog->stop();

    mWaitDialog = 0;

}

/*!

*/

void HsWallpaperSelectionState::action_errorMessage_show()

{

    // TODO: Waiting for UX decision.

    emit event_waitInput();

}

/*!

*/

void HsWallpaperSelectionState::onFetchCompleted(const QString &imagePath)

{

    mImagePath = imagePath;

    emit event_assignImage();

}

/*!

*/

void HsWallpaperSelectionState::onFetchFailed(int errorCode, const QString &errorMessage)

{

    Q_UNUSED(errorCode)

    Q_UNUSED(errorMessage)

    emit event_error();

}

/*!

*/

void HsWallpaperSelectionState::onImageSet()

{

    emit event_waitInput();

}

/*!

*/

void HsWallpaperSelectionState::onImageSetFailed()

{

    emit event_error();

}