/*

 * 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: Base for menu view states.

 *

 */

#include <QScopedPointer>

#include <QStateMachine>

#include <HbMessageBox>

#include <HbParameterLengthLimiter>

#include <HbAction>

#include <HbMenu>

#include <HbAbstractViewItem>

#include <HbView>

#include <HbListView>

#include <canotifier.h>

#include "hsbaseviewstate.h"

#include "hsmenueventfactory.h"

#include "hsmenudialogfactory.h"

#include "hsmenuitemmodel.h"

#include "hsmenumodetransition.h"

#include "hsmenuentryremovedhandler.h"

#include "hsmainwindow.h"

#include "hsmenumodewrapper.h"

/*!

 Constructor.

 \param mainWindow main window wrapper object.

 \param parent Owner.

 */

HsBaseViewState::HsBaseViewState(HsMainWindow &mainWindow, QState *parent):

    QState(parent),

    mApplicationLaunchFailMessage(0),

    mModel(0),

    mContextMenu(0),

    mContextModelIndex(),

    mBackKeyAction(0),

    mMenuView(0),

    mMenuMode(0),

    mMainWindow(mainWindow)

{

    mBackKeyAction = new HbAction(Hb::BackNaviAction, this);

    mViewOptions = new HbMenu;

}

/*!

 Constructor.

 \param mainWindow main window wrapper object.

 \param menuMode menu mode object.

 \param parent Owner.

 */

HsBaseViewState::HsBaseViewState(HsMainWindow &mainWindow,

    HsMenuModeWrapper& menuMode,

    QState *parent):

    QState(parent),

    mApplicationLaunchFailMessage(0),

    mModel(0),

    mContextMenu(0),

    mContextModelIndex(),

    mBackKeyAction(0),

    mMenuView(0),

    mMenuMode(&menuMode),

    mMainWindow(mainWindow)

{

    mBackKeyAction = new HbAction(Hb::BackNaviAction, this);

    mViewOptions = new HbMenu;

}

/*!

 Initialize contained objects.

 \param menuViewBuilder object providing widgets for menu view.

 \param stateContext state context of the view the builder

     is to provide widgets for.

 */

void HsBaseViewState::initialize(HsMenuViewBuilder &menuViewBuilder,

    HsStateContext stateContext)

{

    mMenuView.reset(new HsMenuView(menuViewBuilder, stateContext, mMainWindow));

    mMenuView->view()->setNavigationAction(mBackKeyAction);

    mMenuView->view()->setMenu(mViewOptions);

    connect(this, SIGNAL(entered()),SLOT(stateEntered()));

    connect(this, SIGNAL(exited()),SLOT(stateExited()));

}

/*!

 Creates and open application launch fail message.

 \param errorCode eroor code to display.

 \param itemId id of the launched item.

 */

void HsBaseViewState::createApplicationLaunchFailMessage(int errorCode,

    int itemId)

{

    QString message;

    message.append(

        HbParameterLengthLimiter("txt_applib_info_launching_the_application_failed").arg(

            errorCode));

    // create and show message box

    mApplicationLaunchFailMessage = HsMenuDialogFactory().create(

            message, HsMenuDialogFactory::Close);

    QScopedPointer<HsMenuEntryRemovedHandler> entryObserver(

        new HsMenuEntryRemovedHandler(itemId, mApplicationLaunchFailMessage.data(), SLOT(close())));

    entryObserver.take()->setParent(mApplicationLaunchFailMessage.data());

    mApplicationLaunchFailMessage->open();

}

/*!

 Slot invoked when a state is entered.

 */

void HsBaseViewState::stateEntered()

{

    qDebug("HsBaseViewState::stateEntered()");

    HSMENUTEST_FUNC_ENTRY("HsBaseViewState::stateEntered");

    mMenuView->activate();

    connect(mMenuView.data(), SIGNAL(listViewChange()),

            this, SLOT(closeContextMenu()));

    HSMENUTEST_FUNC_EXIT("HsBaseViewState::stateEntered");

}

/*!

 Slot invoked when a state is exited.

 */

void HsBaseViewState::stateExited()

{

    HSMENUTEST_FUNC_ENTRY("HsBaseViewState::stateExited");

    mMenuView->hideSearchPanel();

    mMenuView->disconnect(this);

    mMenuView->inactivate();

    if (!mApplicationLaunchFailMessage.isNull()) {

        mApplicationLaunchFailMessage->close();

    }

    closeContextMenu();

    HSMENUTEST_FUNC_EXIT("HsBaseViewState::stateExited");

}

/*!

 Add mode entered.

 */

void HsBaseViewState::addModeEntered()

{

    mViewOptions = mMenuView->view()->takeMenu();

    connect(mMenuView.data(),

            SIGNAL(activated(QModelIndex)),

            SLOT(addActivated(QModelIndex)));

    connect(mMenuView.data(),

            SIGNAL(longPressed(HbAbstractViewItem *, QPointF)),

            SLOT(addLongPressed(HbAbstractViewItem *, QPointF)));

}

/*!

 Add mode exited.

 */

void HsBaseViewState::addModeExited()

{

    mMenuView->view()->setMenu(mViewOptions);

}

/*!

 Slot invoked when normal mode entered.

 */

void HsBaseViewState::normalModeEntered()

{

    setMenuOptions();

    connect(mMenuView.data(),

            SIGNAL(longPressed(HbAbstractViewItem *, QPointF)),

            SLOT(showContextMenu(HbAbstractViewItem *, QPointF)));

}

/*!

 Destructor.

 */

HsBaseViewState::~HsBaseViewState()

{

    delete mModel;

    mViewOptions = mMenuView->view()->takeMenu();

    delete mViewOptions;

}

/*!

 Slot connected to List widget in normal mode.

 \param index Model index of the activated item.

 */

void HsBaseViewState::launchItem(const QModelIndex &index)

{

    HSMENUTEST_FUNC_ENTRY("HsBaseViewState::launchItem");

    QSharedPointer<const CaEntry> entry = mModel->entry(index);

    if (!entry.isNull() && !(entry->flags() & UninstallEntryFlag)) {

        if (entry->entryTypeName() == Hs::widgetTypeName) {

            machine()->postEvent(HsMenuEventFactory::createPreviewHSWidgetEvent(entry->id(),

                entry->entryTypeName(), entry->attribute(Hs::widgetUriAttributeName),

                entry->attribute(Hs::widgetLibraryAttributeName)));

            HsMenuService::touch(entry->id());

        }

        else {

            int errCode = HsMenuService::executeAction(entry->id());

            if (errCode != 0) {

                createApplicationLaunchFailMessage(errCode, entry->id());

            }

        }

    }

    HSMENUTEST_FUNC_EXIT("HsBaseViewState::launchItem");

}

/*!

 Slot connected to List widget in normal mode.

 \param index Model index of the activated item.

 */

void HsBaseViewState::openCollection(const QModelIndex &index)

{

    HSMENUTEST_FUNC_ENTRY("HsBaseViewState::openCollection");

    QVariant data = mModel->data(index, CaItemModel::IdRole);

    int id = data.toInt();

    QString collectionType = mModel->data(

            index, CaItemModel::TypeRole).toString();

    qDebug("HsBaseViewState::openCollection - MCS ID: %d", data.toInt());

    machine()->postEvent(

            HsMenuEventFactory::createOpenCollectionFromAppLibraryEvent(

                    id, collectionType));

    HSMENUTEST_FUNC_EXIT("HsBaseViewState::openCollection");

}

/*!

 Slot connected to List widget in normal mode.

 \param index Model index of the activated item.

 */

void HsBaseViewState::showContextMenu(HbAbstractViewItem *item, const QPointF &coords)

{

    HSMENUTEST_FUNC_ENTRY("HsBaseViewState::showContextMenu");

    EntryFlags flags = item->modelIndex().data(

            CaItemModel::FlagsRole).value<EntryFlags> ();

    if (!(flags & UninstallEntryFlag)) {

        mContextMenu = new HbMenu;

        setContextMenuOptions(item,flags);

        mContextModelIndex = item->modelIndex();

        mContextMenu->setPreferredPos(coords);

        mContextMenu->setAttribute(Qt::WA_DeleteOnClose);

        mContextMenu->open(this, SLOT(contextMenuAction(HbAction*)));

    }

    HSMENUTEST_FUNC_EXIT("HsBaseViewState::showContextMenu");

}

/*!

 Open task switcher.

 \retval true if operation is successful.

 */

bool HsBaseViewState::openTaskSwitcher()

{

    return HsMenuService::launchTaskSwitcher();

}

/*!

 Menu softkey back action slot

 */

void HsBaseViewState::openAppLibrary()

{

    machine()->postEvent(HsMenuEventFactory::createOpenAppLibraryEvent());

}

/*!

 Triggers event so that a state adding to Home Screen is reached

 \param entryId of an item to be added to homescreen.

 \retval void

 */

void HsBaseViewState::addToHomeScreen(const int entryId)

{

    HSMENUTEST_FUNC_ENTRY("HsBaseViewState::addToHomeScreen");

    machine()->postEvent(

        HsMenuEventFactory::createAddToHomeScreenEvent(

            entryId, mMenuMode->getHsMenuMode(), mMenuMode->getHsToken()));

    HSMENUTEST_FUNC_EXIT("HsBaseViewState::addToHomeScreen");

}

/*!

 Check software updates.

 \retval 0 if operation is successful.

 */

int HsBaseViewState::checkSoftwareUpdates()

{

    int errCode = HsMenuService::launchSoftwareUpdate();

    if (errCode != 0){

        createApplicationLaunchFailMessage(errCode,0);

    }

    return errCode;

}

/*!

 close context menu

 */

void HsBaseViewState::closeContextMenu()

{

    if (mContextMenu) {

        mContextMenu->close();

    }    

}

/*!

 Handles context menu actions

 \param action action taken in context menu

 */

void HsBaseViewState::contextMenuAction(HbAction *action)

{

    Hs::HsContextAction command =

        static_cast<Hs::HsContextAction>(action->data().toInt());

    const int itemId = mContextModelIndex.data(CaItemModel::IdRole).toInt();

    switch (command) {

        case Hs::AddToHomeScreenContextAction:

            addToHomeScreen(itemId);

            break;

        case Hs::AddToCollectionFromApplicationsViewContextAction:

            // Addding a specific application to

            // an existing collection via item specific menu.

            machine()->postEvent(

                HsMenuEventFactory::createAddAppsFromApplicationsViewEvent(

                    Hs::NoHsSortAttribute, itemId));

            break;

        case Hs::AddToCollectionFromCollectionViewContextAction:

            machine()->postEvent(

                HsMenuEventFactory::createAddAppsFromCollectionViewEvent(

                    -1, itemId));

            break;

        case Hs::UninstallContextAction:

            machine()->postEvent(

                HsMenuEventFactory::createUninstallApplicationEvent(

                    itemId));

            break;

        case Hs::AppSettingContextAction:

            machine()->postEvent(

                HsMenuEventFactory::createAppSettingsViewEvent(itemId));

            break;

        case Hs::AppDetailsContextAction:

            machine()->postEvent(

                HsMenuEventFactory::createAppDetailsViewEvent(itemId));

            break;

        case Hs::OpenAppContextAction:

            launchItem(mContextModelIndex);

            break;

        case Hs::RenameCollectionContextAction:

            machine()->postEvent(

                HsMenuEventFactory::createRenameCollectionEvent(itemId));

            break;

        case Hs::DeleteCollectionContextAction:

             machine()->postEvent(

                HsMenuEventFactory::createDeleteCollectionEvent(itemId));

            break;

        case Hs::OpenCollectionContextAction:

            openCollection(mContextModelIndex);

            break;

        default:

            break;

    }

    HsMenuService::touch(itemId);

}

/*!

 Slot connected to List widget in add mode.

 \param index Model index of the activated item.

 */

void HsBaseViewState::addActivated(const QModelIndex &index)

{

    HSMENUTEST_FUNC_ENTRY("HsAllAppsState::addActivated");

    mMenuView->disconnect(this);

    const int itemId = index.data(CaItemModel::IdRole).toInt();

    addToHomeScreen(itemId);

    HsMenuService::touch(itemId);

    HSMENUTEST_FUNC_EXIT("HsAllAppsState::addActivated");

}

/*!

 Slot connected to List widget in add mode.

 Called when item long pressed.

 \param item View item.

 \param coords Press point coordinates.

 */

void HsBaseViewState::addLongPressed(HbAbstractViewItem *item,

                                    const QPointF &coords)

{

    Q_UNUSED(coords);

    HSMENUTEST_FUNC_ENTRY("HsAllAppsState::addLongPressed");

    addActivated(item->modelIndex());

    HSMENUTEST_FUNC_EXIT("HsAllAppsState::addLongPressed");

}

/*!

 Scrolls view to first item at top

 */

void HsBaseViewState::scrollToBeginning()

{

    mMenuView->listView()->scrollTo(

            mModel->index(0), HbAbstractItemView::PositionAtTop);

}

/*!

 Normal mode exited dummy implementation.

 */

void HsBaseViewState::normalModeExited()

{

}

/*!

 Defines transitions

 */

void HsBaseViewState::defineTransitions()

{

    QState *initialState = new QState(this);

    setInitialState(initialState);

    QState *addModeState = new QState(this);

    connect(addModeState, SIGNAL(entered()),SLOT(addModeEntered()));

    connect(addModeState, SIGNAL(exited()),SLOT(addModeExited()));

    QState *normalModeState = new QState(this);

    connect(normalModeState, SIGNAL(entered()),SLOT(normalModeEntered()));

    connect(normalModeState, SIGNAL(exited()),SLOT(normalModeExited()));

    initialState->addTransition(new HsMenuModeTransition(

            *mMenuMode, Hs::NormalHsMenuMode, normalModeState));

    initialState->addTransition(new HsMenuModeTransition(

            *mMenuMode, Hs::AddHsMenuMode, addModeState));

}