/*

* Copyright (c) 2008-2009 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:  BtCpUiMainView implementation

*

*/

#include "btcpuimainview.h"

#include <QtGlobal>

#include <QGraphicsLinearLayout>

#include <HbInstance>

//#include "btuiviewutil.h"

#include <hbdocumentloader.h>

#include <hbnotificationdialog.h>

#include <hbgridview.h>

#include <hbpushbutton.h>

#include <hblabel.h>

#include <hbicon.h>

#include <hblineedit.h>

#include <hbtooltip.h>

#include <btengconstants.h>

#include <hbmenu.h>

#include <hbaction.h>

#include <hbcombobox.h>

#include "btcpuisearchview.h"

#include <bluetoothuitrace.h>

#include <btdelegatefactory.h>

#include <btabstractdelegate.h>

#include "btqtconstants.h"

// docml to load

const char* BTUI_MAINVIEW_DOCML = ":/docml/bt-main-view.docml";

/*!

    Constructs a new BtUiMainView using HBDocumentLoader.  Docml (basically xml) file

    has been generated using Application Designer.   

 */

BtCpUiMainView::BtCpUiMainView( BtuiModel &model, QGraphicsItem *parent )

    : BtCpUiBaseView( model, parent ), mAbstractDelegate(0)

{

    bool ret(false);

    mMainWindow = hbInstance->allMainWindows().first();

    mMainView = this;

    // Create view for the application.

    // Set the name for the view. The name should be same as the view's

    // name in docml.

    setObjectName("view");

    QObjectList objectList;

    objectList.append(this);

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

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

    mLoader = new HbDocumentLoader();

    mLoader->setObjectTree(objectList);

    bool ok = false;

    mLoader->load( BTUI_MAINVIEW_DOCML, &ok );

    // Exit if the file format is invalid

    BTUI_ASSERT_X( ok, "bt-main-view", "Invalid docml file" );

    mOrientation = mMainWindow->orientation();

    if (mOrientation == Qt::Horizontal) {

        mLoader->load(BTUI_MAINVIEW_DOCML, "landscape", &ok);

        BTUI_ASSERT_X( ok, "bt-main-view", "Invalid docml file: landscape section problem" );

    }

    else {

        mLoader->load(BTUI_MAINVIEW_DOCML, "portrait", &ok);

        BTUI_ASSERT_X( ok, "bt-main-view", "Invalid docml file: landscape section problem" );        

    }

    mDeviceNameEdit=0;

    mDeviceNameEdit = qobject_cast<HbLineEdit *>( mLoader->findWidget( "lineEdit" ) );

    BTUI_ASSERT_X( mDeviceNameEdit != 0, "bt-main-view", "Device Name not found" );

    ret =  connect(mDeviceNameEdit, SIGNAL(editingFinished ()), this, SLOT(changeBtLocalName()));

    mPowerButton=0;

    mPowerButton = qobject_cast<HbPushButton *>( mLoader->findWidget( "pushButton" ) );

    BTUI_ASSERT_X( mPowerButton != 0, "bt-main-view", "power button not found" );

    ret =  connect(mPowerButton, SIGNAL(clicked()), this, SLOT(changePowerState()));

    BTUI_ASSERT_X( ret, "BtCpUiMainView::BtCpUiMainView", "can't connect power button" );

    mVisibilityMode=0;

    mVisibilityMode = qobject_cast<HbComboBox *>( mLoader->findWidget( "combobox" ) );

    BTUI_ASSERT_X( mVisibilityMode != 0, "bt-main-view", "visibility combobox not found" );

    mDeviceList=0;

    mDeviceList = qobject_cast<HbGridView *>( mLoader->findWidget( "gridView" ) );

    BTUI_ASSERT_X( mDeviceList != 0, "bt-main-view", "Device List (grid view) not found" );   

    // listen for orientation changes

    ret = connect(mMainWindow, SIGNAL(orientationChanged(Qt::Orientation)),

            this, SLOT(changeOrientation(Qt::Orientation)));

    BTUI_ASSERT_X( ret, "BtCpUiMainView::BtCpUiMainView()", "connect orientationChanged() failed");

    // load tool bar actions

    HbAction *discoverAction = static_cast<HbAction*>( mLoader->findObject( "discoverAction" ) );

    BTUI_ASSERT_X( discoverAction, "bt-main-view", "discover action missing" ); 

    ret = connect(discoverAction, SIGNAL(triggered()), this, SLOT(goToDiscoveryView()));

    BTUI_ASSERT_X( ret, "bt-main-view", "orientation toggle can't connect" ); 

    // load menu

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

    BTUI_ASSERT_X( optionsMenu != 0, "bt-main-view", "Options menu not found" );   

    this->setMenu(optionsMenu);

    // update display when setting data changed

    ret = connect(&mModel, SIGNAL(dataChanged(QModelIndex,QModelIndex)), 

            this, SLOT(updateSettingItems(QModelIndex,QModelIndex)));

    BTUI_ASSERT_X( ret, "BtCpUiMainView::BtCpUiMainView", "can't connect dataChanged" );

    QModelIndex top = mModel.index( BtuiModel::LocalSettingRow, BtuiModel::BluetoothNameCol );

    QModelIndex bottom = mModel.index( BtuiModel::LocalSettingRow, BtuiModel::VisibilityCol );

    // update name, power and visibility rows

    updateSettingItems( top, bottom );

    //Handle Visibility Change User Interaction

    ret = connect(mVisibilityMode, SIGNAL(currentIndexChanged (int)), 

            this, SLOT(visibilityChanged (int)));

    // create other views

    createViews();

    mCurrentView = this;

    mCurrentViewId = MainView;

}

/*!

    Destructs the BtCpUiMainView.

 */

BtCpUiMainView::~BtCpUiMainView()

{

    delete mLoader; // Also deletes all widgets that it constructed.

    mMainWindow->removeView(mSearchView);

    delete mSearchView;

	 if (mAbstractDelegate)

    {

        delete mAbstractDelegate;

    }

}

/*! 

    from base class, initialize the view

 */

void BtCpUiMainView::activateView(const QVariant& value, int cmdId )

{

    Q_UNUSED(value);

    Q_UNUSED(cmdId);

}

/*! 

    From base class. Handle resource before the current view is deactivated.

 */

void BtCpUiMainView::deactivateView()

{

}

void BtCpUiMainView::itemActivated(QModelIndex index)

{

    Q_UNUSED(index);

}

void BtCpUiMainView::goToDiscoveryView()

{

    changeView( SearchView, false, 0 );

}

Qt::Orientation BtCpUiMainView::orientation()

{

    return mOrientation;

}

void BtCpUiMainView::changeBtLocalName()

{

    //Error handling has to be done.  

    if (!mAbstractDelegate) {

        mAbstractDelegate = BtDelegateFactory::newDelegate(BtDelegate::DeviceName, mModel); 

        connect( mAbstractDelegate, SIGNAL(commandCompleted(int,QVariant)), this, SLOT(btNameDelegateCompleted(int,QVariant)) );

        mAbstractDelegate->exec(mDeviceNameEdit->text ());

    }

    else {

        setPrevBtLocalName();

    }

}

void BtCpUiMainView::setPrevBtLocalName()

{

    //Should we notify user this as Error...?

    HbNotificationDialog::launchDialog(hbTrId("Error"));

    QModelIndex index = mModel.index( BtuiModel::LocalSettingRow, BtuiModel::BluetoothNameCol );

    mDeviceNameEdit->setText( mModel.data(index,BtuiModel::settingDisplay).toString() );

}

void BtCpUiMainView::btNameDelegateCompleted(int status, QVariant param)

{

    if(KErrNone == status) {

        mDeviceNameEdit->setText(param.toString());

    }

    else {

        setPrevBtLocalName();

    }

    //Error handling has to be done.    

    if (mAbstractDelegate)

    {

        disconnect(mAbstractDelegate);

        delete mAbstractDelegate;

        mAbstractDelegate = 0;

    }

}

void BtCpUiMainView::visibilityChanged (int index)

{

    QList<QVariant> list;

    VisibilityMode mode = indexToVisibilityMode(index);

    list.append(QVariant((int)mode));

    if(BtTemporary == VisibilityMode(mode)) {

        //Right now hardcoded to 5 Mins.

        list.append(QVariant(5));

    }

    //Error handling has to be done.    

    if (!mAbstractDelegate) {

        mAbstractDelegate = BtDelegateFactory::newDelegate(BtDelegate::Visibility, mModel); 

        connect( mAbstractDelegate, SIGNAL(commandCompleted(int)), this, SLOT(visibilityDelegateCompleted(int)) );

        mAbstractDelegate->exec(list);

    }

    else {

        setPrevVisibilityMode();

    }

}

void BtCpUiMainView::setPrevVisibilityMode()

{

    bool ret(false);

    //Should we notify this error to user..?

    HbNotificationDialog::launchDialog(hbTrId("Error"));

    QModelIndex index = mModel.index( BtuiModel::LocalSettingRow, BtuiModel::VisibilityCol );

    ret = disconnect(mVisibilityMode, SIGNAL(currentIndexChanged (int)), 

                    this, SLOT(visibilityChanged (int)));

    BTUI_ASSERT_X( ret, "BtCpUiMainView::setPrevVisibilityMode", "can't disconnect signal" );

        mVisibilityMode->setCurrentIndex ( visibilityModeToIndex((VisibilityMode)

                mModel.data(index,BtuiModel::SettingValue).toInt()) );

    //Handle Visibility Change User Interaction

    ret = connect(mVisibilityMode, SIGNAL(currentIndexChanged (int)), 

            this, SLOT(visibilityChanged (int)));

    BTUI_ASSERT_X( ret, "BtCpUiMainView::setPrevVisibilityMode", "can't connect signal" );

}

void BtCpUiMainView::visibilityDelegateCompleted(int status)

{

    //This should be mapped to Qt error

    if(KErrNone != status) {

        setPrevVisibilityMode();

    }

    //Error handling has to be done.    

    if (mAbstractDelegate)

    {

        disconnect(mAbstractDelegate);

        delete mAbstractDelegate;

        mAbstractDelegate = 0;

    }

}

// called due to real orientation change event coming from main window

void BtCpUiMainView::changeOrientation( Qt::Orientation orientation )

{

    bool ok = false;

    mOrientation = orientation;

    if( orientation == Qt::Vertical ) {

        // load "portrait" section

        mLoader->load( BTUI_MAINVIEW_DOCML, "portrait", &ok );

        BTUI_ASSERT_X( ok, "bt-main-view", "Invalid docml file: portrait section problem" );

    } else {

        // load "landscape" section

        mLoader->load( BTUI_MAINVIEW_DOCML, "landscape", &ok );

        BTUI_ASSERT_X( ok, "bt-main-view", "Invalid docml file: landscape section problem" );

    }

}

void BtCpUiMainView::commandCompleted( int cmdId, int err, const QString &diagnostic )

{

    Q_UNUSED(cmdId);

    Q_UNUSED(err);

    Q_UNUSED(diagnostic);

}

/*!

    Slot for receiving notification of data changes from the model.

    Identify the setting changed and update the corresponding UI item.

 */

void BtCpUiMainView::updateSettingItems(const QModelIndex &topLeft, const QModelIndex &bottomRight)

{   

    // update only the part of the view specified by the model's row(s)

    for (int i=topLeft.column(); i <= bottomRight.column(); i++) {

        QModelIndex index = mModel.index( BtuiModel::LocalSettingRow, i);

        // Distinguish which setting value is changed.

        switch ( i ) {

        case BtuiModel::BluetoothNameCol :

            mDeviceNameEdit->setText( mModel.data(index,BtuiModel::settingDisplay).toString() );

            break;

        case BtuiModel::PowerStateCol:

            mPowerButton->setText( mModel.data(index,BtuiModel::settingDisplay).toString() );

            break;

        case BtuiModel::VisibilityCol:

            mVisibilityMode->setCurrentIndex ( visibilityModeToIndex((VisibilityMode)

                    mModel.data(index,BtuiModel::SettingValue).toInt()) );

            break;

        }

    }

}

/*!

    Slot for receiving notification for user interaction on power state.

    Manually update model data since HbPushButton is not linked to model directly.

 */

void BtCpUiMainView::changePowerState()

{

    QModelIndex index = mModel.index(BtuiModel::LocalSettingRow, BtuiModel::PowerStateCol);

    QVariant powerState = mModel.data(index, Qt::EditRole);

    if (!mAbstractDelegate)//if there is no other delegate running

    { 

        mAbstractDelegate = BtDelegateFactory::newDelegate(BtDelegate::ManagePower, mModel); 

        connect( mAbstractDelegate, SIGNAL(commandCompleted(int)), this, SLOT(powerDelegateCompleted(int)) );

        mAbstractDelegate->exec(powerState);

    }

}

void BtCpUiMainView::powerDelegateCompleted(int status)

{

    Q_UNUSED(status);

    //ToDo: Error handling here 

    if (mAbstractDelegate)

    {

        disconnect(mAbstractDelegate);

        delete mAbstractDelegate;

        mAbstractDelegate = 0;

    }

    //BTUI_ASSERT_X( status, "bt-main-view", "error in delegate complete" );  

}

/*!

 * Mapping from visibility mode UI row to VisibilityMode

 */

VisibilityMode BtCpUiMainView::indexToVisibilityMode(int index)

{

    VisibilityMode mode; 

    switch(index) {

    case UiRowBtHidden:  

        mode = BtHidden;

        break;

    case UiRowBtVisible:  

        mode = BtVisible;

        break;

    case UiRowBtTemporary:  

        mode = BtTemporary;

        break;

    default:

        mode = BtUnknown;

    }

    return mode;

}

/*!

 * Mapping from VisibilityMode to visibility mode UI row  

 */

int BtCpUiMainView::visibilityModeToIndex(VisibilityMode mode)

{

    int uiRow;

    switch(mode) {

    case BtHidden:  

        uiRow = UiRowBtHidden;

        break;

    case BtVisible:  

        uiRow = UiRowBtVisible;

        break;

    case BtTemporary:  

        uiRow = UiRowBtTemporary;

        break;

    default:

        uiRow = -1;  // error

    }

    return uiRow;

}

//////////////////////

//

// from view manager

// 

//////////////////////

/*!

    Create views(main view, device view and search view).

    Add them to MainWindow.  All views are long-lived and are deleted only when exiting the application 

    (or when main view is deleted).

 */

void BtCpUiMainView::createViews()

{

    Qt::Orientation orientation = mMainWindow->orientation();

    // Create other views

    mSearchView = new BtCpUiSearchView( mModel, this );

    mMainWindow->addView(mSearchView);

    mDeviceView = 0;  // ToDo: add this later

    mCurrentView = this;

    mCurrentViewId = MainView;

    // QList<int> stores the previous view ids for each view.

    for( int i=0; i < LastView; i++ ) {

        mPreviousViewIds.append( 0 );

    }

}

/*!

    Switch between the views.  

    Parameter cmdId is used for automatically executing command.

    Parameter "value" is optional except for GadgetView, 

    which needs the BT address (QString)

 */

void BtCpUiMainView::changeView(int targetViewId, bool fromBackButton, 

        int cmdId, const QVariant& value )

{

    mCurrentView->deactivateView();

    // update the previous view Id in QList<int> 

    // If launching the target view from back softkey, 

    // the previous viewId of target view should not be changed. 

    // Otherwise, loop happens between two views.

    if(!fromBackButton) {

        if ((targetViewId == DeviceView) && (mCurrentViewId == SearchView)) {

            // we don't want to return to search view after e.g. pairing a new device

            mPreviousViewIds[ targetViewId ] = MainView;  

        } 

        else {

            // normal case:  return to previous view

            mPreviousViewIds[ targetViewId ] = mCurrentViewId;

        }

    }

    // set the new current view 

    mCurrentView = idToView(targetViewId);

    mCurrentViewId = targetViewId;

    mMainWindow->setCurrentView( mCurrentView );

    // do preparation or some actions when new view is activated 

    mCurrentView->activateView( value, cmdId );

}

BtCpUiBaseView * BtCpUiMainView::idToView(int targetViewId)

{

    switch (targetViewId) {

    case MainView:

        return mMainView;

    case SearchView:

        return mSearchView;

    case DeviceView:

        return mDeviceView;

    default :

        BTUI_ASSERT_X(false, "BtCpUiMainView::idToView", "invalid view id");

    }

    return 0;

}

/*

   Jump to previous view.  This function is used when back button is pressed.

 */

void BtCpUiMainView::switchToPreviousViewReally()

{  

    // jump to previous view of current view.

    if( (mCurrentViewId >= 0) && (mCurrentViewId < LastView)) {

        changeView( mPreviousViewIds[mCurrentViewId], true, 0 );

    } 

    else {

        BTUI_ASSERT_X(false, "BtCpUiMainView::switchToPreviousViewReally", "invalid view id");

    }

}

void BtCpUiMainView::setSoftkeyBack()

{

}

void BtCpUiMainView::switchToPreviousView()

{

}