/*

* Copyright (c) 2009-2010 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:

* WLAN Sniffer List View. 

*/

// System includes

#include <QGraphicsWidget>

#include <QSharedPointer>

#include <QObjectList>

#include <HbLabel>

#include <HbPushButton>

#include <HbMenu>

#include <HbAction>

#include <HbListWidget>

#include <HbListWidgetItem>

#include <HbDocumentLoader>

#include <HbInstance>

#include <HbMessageBox>

#include <HbParameterLengthLimiter>

#include <xqserviceutil.h>

// User includes

#include "wlanqtutils.h"

#include "wlanqtutilsap.h"

#include "wlanqtutilsiap.h"

#include "wlansnifferengine.h"

#include "wlansniffermainwindow.h"

#include "wlansnifferlistview.h"

#include "wlansnifferlistitem.h"

#include "wlansnifferlistwidget.h"

#include "OstTraceDefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "wlansnifferlistviewTraces.h"

#endif

/*!

    \class WlanSnifferListView

    \brief WLAN Sniffer application's list view implementation.

*/

// External function prototypes

// Local constants

//! WLAN Sniffer list view docml file location

static const QString WlanSnifferListViewDocml(":/docml/wlansnifferlistview.docml");

//! WLAN Sniffer list view object name

static const QString WlanSnifferListViewName("occ_list");

// ======== LOCAL FUNCTIONS ========

// ======== MEMBER FUNCTIONS ========

/*!

    Constructor.

    @param [in] engine WLAN Sniffer application engine.

    @param [in] mainWindow WLAN Sniffer main window.

*/

WlanSnifferListView::WlanSnifferListView(

    WlanSnifferEngine *engine,

    WlanSnifferMainWindow *mainWindow) :

    HbView(),

    mDocLoader(new HbDocumentLoader(mainWindow)),

    mWlanListWidget(),

    mContextMenu(),

    mContextMenuData(),

    mWlanEnableDialog(),

    mIgnoreWlanScanResults(false),

    mConnectingIapId(WlanQtUtils::IapIdNone),

    mEngine(engine),

    mSwitchWlanAction(0),

    mAddWlanAction(0),

    mWlanList(0),

    mStatusLabel(0),

    mWlanButton(0)

{

    OstTraceFunctionEntry0(WLANSNIFFERLISTVIEW_WLANSNIFFERLISTVIEW_ENTRY);

    // Initialize UI from the docml based on standalone/embedded status

    loadDocml(mEngine->isEmbedded());

    if (mEngine->isEmbedded()) {

        // We need to create a custom navigation action and handle exiting

        // from the application differently in case the application was

        // launched as embedded via QtHighway

        HbAction *completeAction = new HbAction(Hb::BackNaviAction, this);

        setNavigationAction(completeAction);

        bool connectStatus = connect(

            completeAction,

            SIGNAL(triggered(bool)),

            mEngine,

            SLOT(completeService()));

        Q_ASSERT(connectStatus);

    }

    // Connect WLAN network open & close signals

    bool connectStatus = connect(

        mEngine->wlanQtUtils(),

        SIGNAL(wlanNetworkOpened(int)),

        this,

        SLOT(updateConnectionOpened(int)));

    Q_ASSERT(connectStatus);

    connectStatus = connect(

        mEngine->wlanQtUtils(),

        SIGNAL(wlanNetworkClosed(int, int)),

        this,

        SLOT(updateConnectionClosed(int))); // "reason" parameter ignored

    Q_ASSERT(connectStatus);

    // Connect WLAN ON/OFF setting change signal

    connectStatus = connect(

        mEngine,

        SIGNAL(masterWlanStatus(bool)),

        this,

        SLOT(updateWlanEnabled()));

    Q_ASSERT(connectStatus);

    // Connect Force Disable WLAN setting change signal

    connectStatus = connect(

        mEngine,

        SIGNAL(forceDisableWlanStatus(bool)),

        this,

        SLOT(updateWlanEnabled()));

    Q_ASSERT(connectStatus);

    // Connect signals to catch user interaction with the WLAN network list

    connectStatus = connect(

        mWlanList,

        SIGNAL(activated(HbListWidgetItem *)),

        this,

        SLOT(handleListItemActivated(HbListWidgetItem *)));

    Q_ASSERT(connectStatus);

    connectStatus = connect(

        mWlanList,

        SIGNAL(longPressed(HbListWidgetItem *, QPointF)),

        this,

        SLOT(handleListItemLongPressed(HbListWidgetItem *, QPointF)));

    Q_ASSERT(connectStatus);

    // Connect signals to catch user interaction with WLAN ON/OFF switching

    connectStatus = connect(

        mWlanButton,

        SIGNAL(clicked(bool)),

        this,

        SLOT(handleWlanToggled()));

    Q_ASSERT(connectStatus);

    connectStatus = connect(

        mSwitchWlanAction,

        SIGNAL(triggered(bool)),

        this,

        SLOT(handleWlanToggled()));

    Q_ASSERT(connectStatus);

    // Connect adding WLAN manually

    connectStatus = connect(

        mAddWlanAction,

        SIGNAL(triggered(bool)),

        this,

        SLOT(startWlanWizard()));

    Q_ASSERT(connectStatus);

    // Connect WLAN scan results signal

    connectStatus = connect(

        mEngine,

        SIGNAL(wlanScanReady()),

        this,

        SLOT(updateListContent()));

    Q_ASSERT(connectStatus);

    // Set the initial value of WLAN state

    updateWlanEnabled();

    OstTraceFunctionExit0(WLANSNIFFERLISTVIEW_WLANSNIFFERLISTVIEW_EXIT);

}

/*!

    Destructor.

*/

WlanSnifferListView::~WlanSnifferListView()

{

    OstTraceFunctionEntry0(WLANSNIFFERLISTVIEW_WLANSNIFFERLISTVIEWDESTR_ENTRY);

    OstTraceFunctionExit0(WLANSNIFFERLISTVIEW_WLANSNIFFERLISTVIEWDESTR_EXIT);

}

/*!

    Loading of WLAN Sniffer List View docml.

    @param [in] isEmbedded TRUE if WLAN Sniffer is launched as embedded. 

*/

void WlanSnifferListView::loadDocml(bool isEmbedded)

{

    OstTraceFunctionEntry0(WLANSNIFFERLISTVIEW_LOADDOCML_ENTRY);

    // Pass the view to the document loader. Document loader uses this view

    // when docml is parsed, instead of creating a new view.

    setObjectName(WlanSnifferListViewName);

    QObjectList objectList;

    objectList.append(this);

    mDocLoader->setObjectTree(objectList);

    // First load the common section

    bool ok = false;

    mDocLoader->load(WlanSnifferListViewDocml, &ok);

    Q_ASSERT(ok);

    // Then load the mode specific section

    if (isEmbedded) {

        mDocLoader->load(WlanSnifferListViewDocml, "embedded", &ok);

    } else {

        mDocLoader->load(WlanSnifferListViewDocml, "standalone", &ok);

    }

    Q_ASSERT(ok);

    // Load the view by name from the xml file

    QGraphicsWidget *widget = mDocLoader->findWidget(WlanSnifferListViewName);

    Q_ASSERT(widget);

    // Set view menu

    HbMenu *viewMenu = qobject_cast<HbMenu *>(mDocLoader->findWidget("viewMenu"));

    Q_ASSERT(viewMenu);

    setMenu(viewMenu);

    // WLAN Sniffer list widget takes responsibility of the list widget behaviour

    mWlanList = qobject_cast<HbListWidget *>(mDocLoader->findWidget("listWidget"));

    Q_ASSERT(mWlanList);

    mWlanListWidget = QSharedPointer<WlanSnifferListWidget>(new WlanSnifferListWidget(mWlanList));

    // Retrieve pointers to widgets we need to access from the code

    mSwitchWlanAction = qobject_cast<HbAction *>(mDocLoader->findObject("switchWlanAction"));

    Q_ASSERT(mSwitchWlanAction);

    mAddWlanAction = qobject_cast<HbAction *>(mDocLoader->findObject("addWlanAction"));

    Q_ASSERT(mAddWlanAction);

    mWlanButton = qobject_cast<HbPushButton *>(mDocLoader->findWidget("wlanButton"));

    Q_ASSERT(mWlanButton);

    mStatusLabel = qobject_cast<HbLabel *>(mDocLoader->findWidget("statusLabel"));

    Q_ASSERT(mStatusLabel);

    OstTraceFunctionExit0(WLANSNIFFERLISTVIEW_LOADDOCML_EXIT);

}

/*!

    Updates WLAN status label based on current WLAN status.

    @param [in] enabled True if WLAN is enabled.

*/

void WlanSnifferListView::updateWlanStatusLabel(bool enabled)

{

    OstTraceFunctionEntry0(WLANSNIFFERLISTVIEW_UPDATEWLANSTATUSLABEL_ENTRY);

    QString status;

    if (!enabled) {

        // WLAN is OFF

        status = hbTrId("txt_occ_grid_wlan_is_switched_off");

    } else {

        int iapId = mEngine->wlanQtUtils()->activeIap();

        switch (mEngine->wlanQtUtils()->connectionStatus()) {

        case WlanQtUtils::ConnStatusConnecting:

            // WLAN is connecting

            Q_ASSERT(iapId != WlanQtUtils::IapIdNone);

            status = HbParameterLengthLimiter(

                "txt_occ_grid_connecting_to_1").arg(

                    mEngine->wlanQtUtils()->iapName(iapId));

            break;

        case WlanQtUtils::ConnStatusConnected:

            // WLAN is connected

            Q_ASSERT(iapId != WlanQtUtils::IapIdNone);

            status = HbParameterLengthLimiter(

                "txt_occ_grid_connected_to_1").arg(

                    mEngine->wlanQtUtils()->iapName(iapId));

            break;

        default:

            // WLAN is disconnected

            status = hbTrId("txt_occ_grid_not_connected");        

            break;

        }

    }

    mStatusLabel->setPlainText(status);

    OstTraceFunctionExit0(WLANSNIFFERLISTVIEW_UPDATEWLANSTATUSLABEL_EXIT);

}

/*!

    Handles a "Connect" action for the selected IAP or AP item.

    @param data IAP ID (int), or AP class (WlanQtUtilsAp) to connect.

*/

void WlanSnifferListView::handleConnect(QVariant data)

{

    OstTraceFunctionEntry0(WLANSNIFFERLISTVIEW_HANDLECONNECT_ENTRY);

    // Check whether we need to disconnect a previous connection first

    int activeWlanId = mEngine->wlanQtUtils()->activeIap();

    // Get IAP ID if IAP is available

    int iapId = WlanQtUtils::IapIdNone;

    if (data.canConvert<int>()) {

        iapId = data.toInt();

    }

    OstTraceExt2(

        TRACE_NORMAL,

        WLANSNIFFERLISTVIEW_HANDLECONNECT,

        "WlanSnifferListView::handleConnect;activeWlanId=%d;iapId=%d",

        activeWlanId,

        iapId);

    // Skip connecting if the IAP is already connected

    if (activeWlanId != WlanQtUtils::IapIdNone && iapId == activeWlanId) {

        return;

    }

    if (activeWlanId != WlanQtUtils::IapIdNone) {

        mEngine->wlanQtUtils()->disconnectIap(activeWlanId);

        // Update list widget so that the IAP is no longer connected

        updateListContent();

    }

    if (iapId != WlanQtUtils::IapIdNone) {

        // Item was an IAP, connect it.

        mConnectingIapId = iapId;

        mStatusLabel->setPlainText(

            HbParameterLengthLimiter(

                "txt_occ_grid_connecting_to_1").arg(

                    mEngine->wlanQtUtils()->iapName(iapId)));

        mEngine->wlanQtUtils()->connectIap(iapId);

    } else {

        // Item is a WLAN AP. Summon the Wlan Wizard to handle creation

        // of the IAP and connecting it.

        Q_ASSERT(data.canConvert<WlanQtUtilsAp>());

        WlanQtUtilsAp ap = data.value<WlanQtUtilsAp>();

        emit wizardTriggered(&ap);

    }

    OstTraceFunctionExit0(WLANSNIFFERLISTVIEW_HANDLECONNECT_EXIT);

}

/*!

    Updates WLAN list widget with new WLAN scan results. 

*/

void WlanSnifferListView::updateListContent()

{

    OstTraceFunctionEntry0(WLANSNIFFERLISTVIEW_UPDATELISTCONTENT_ENTRY);

    if (!mIgnoreWlanScanResults) {

        // Get the latest scan results

        QList< QSharedPointer<WlanQtUtilsIap> > iaps;

        QList< QSharedPointer<WlanQtUtilsAp> > aps;

        mEngine->wlanQtUtils()->availableWlans(iaps, aps);

        // Check for connected IAP

        int iapId = WlanQtUtils::IapIdNone;

        if (mEngine->wlanQtUtils()->connectionStatus() ==

            WlanQtUtils::ConnStatusConnected) {

            iapId = mEngine->wlanQtUtils()->activeIap();

        }

        // Let the list widget class update the list content

        mWlanListWidget->updateContent(iaps, aps, iapId);

    }

    OstTraceFunctionExit0(WLANSNIFFERLISTVIEW_UPDATELISTCONTENT_EXIT);

}

/*!

    WLAN state settings change handler. This slot handles both the

    WLAN ON/OFF setting and WLAN forced OFF setting.

    Updates all WLAN ON/OFF related (UI) elements.

*/

void WlanSnifferListView::updateWlanEnabled()

{

    OstTraceFunctionEntry0(WLANSNIFFERLISTVIEW_UPDATEWLANENABLED_ENTRY);

    // Check the updated setting status

    bool forcedOff = mEngine->forceDisableWlan();

    bool enabled = mEngine->masterWlan() && !forcedOff;

    // Update the WLAN status label

    updateWlanStatusLabel(enabled);

    // Set the WLAN ON/OFF button state

    mWlanButton->setChecked(enabled);

    // Select the right WLAN button icon and menu action text

    if (enabled) {

        mWlanButton->setIcon(HbIcon("qtg_mono_wlan"));

        mSwitchWlanAction->setText(hbTrId("txt_occ_opt_switch_wlan_off"));

    } else {

        mWlanButton->setIcon(HbIcon("qtg_mono_wlan_offline"));

        mSwitchWlanAction->setText(hbTrId("txt_occ_opt_switch_wlan_on"));

    }

    // Set triggable WLAN UI elements disabled if WLAN is forced OFF

    mWlanButton->setEnabled(!forcedOff);

    mSwitchWlanAction->setEnabled(!forcedOff);

    // Disable manual WLAN IAP creation when WLAN is switched OFF

    mAddWlanAction->setEnabled(enabled);

    // Switch WLAN scanning ON/OFF

    if (enabled) {

        mEngine->startWlanScanning();

    } else {

        mEngine->stopWlanScanning();

        // Clear the network list when going to offline

        mWlanList->clear();

    }

    OstTraceFunctionExit0(WLANSNIFFERLISTVIEW_UPDATEWLANENABLED_EXIT);

}

/*!

    Connection opened slot. Updates connection status.

    @param [in] iapId IAP ID of the connected WLAN IAP. 

*/

void WlanSnifferListView::updateConnectionOpened(int iapId)

{

    OstTraceFunctionEntry0(WLANSNIFFERLISTVIEW_UPDATECONNECTIONOPENED_ENTRY);

    mConnectingIapId = WlanQtUtils::IapIdNone;

    mStatusLabel->setPlainText(

        HbParameterLengthLimiter(

            "txt_occ_grid_connected_to_1").arg(

                mEngine->wlanQtUtils()->iapName(iapId)));

    // Update the list widget content

    updateListContent();

    // Scroll to the top of the list

    mWlanListWidget->scrollTo(0);

    OstTraceFunctionExit0(WLANSNIFFERLISTVIEW_UPDATECONNECTIONOPENED_EXIT);

}

/*!

    Connection closing handler. Updates connection status.

    @param [in] iapId Disconnected IAP ID. 

*/

void WlanSnifferListView::updateConnectionClosed(int iapId)

{

    OstTraceFunctionEntry0(WLANSNIFFERLISTVIEW_UPDATECONNECTIONCLOSED_ENTRY);

    if (mEngine->masterWlan() && !mEngine->forceDisableWlan()) {

        // Check whether we can update the status text to "Not connected"

        if (mConnectingIapId == WlanQtUtils::IapIdNone ||

            mConnectingIapId == iapId) {

            mStatusLabel->setPlainText(hbTrId("txt_occ_grid_not_connected"));

        }

        // else: we are already connecting to another network so don't touch

        // the status label

        // Update the list widget content

        updateListContent();

    }

    if (mConnectingIapId == iapId) {

        // Not connecting to this network anymore

        mConnectingIapId = WlanQtUtils::IapIdNone;

    }

    OstTraceFunctionExit0(WLANSNIFFERLISTVIEW_UPDATECONNECTIONCLOSED_EXIT);

}

/*!

    Context menu closing handler.

*/

void WlanSnifferListView::handleContextMenuClosed()

{

    OstTraceFunctionEntry0(WLANSNIFFERLISTVIEW_HANDLECONTEXTMENUCLOSED_ENTRY);

    // Let list updating start again

    mIgnoreWlanScanResults = false;

    OstTraceFunctionExit0(WLANSNIFFERLISTVIEW_HANDLECONTEXTMENUCLOSED_EXIT);

}

/*!

    List item activation handler. Connects the WLAN network, and if there

    is no IAP yet for it, starts WLAN Wizard.

    @param [in] item Selected WLAN network list item. 

*/

void WlanSnifferListView::handleListItemActivated(HbListWidgetItem *item)

{

    OstTraceFunctionEntry0(WLANSNIFFERLISTVIEW_HANDLELISTITEMACTIVATED_ENTRY);

    handleConnect(item->data());

    OstTraceFunctionExit0(WLANSNIFFERLISTVIEW_HANDLELISTITEMACTIVATED_EXIT);

}