/*

* Copyright (c) 2007-2009 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:  Main plugin class

*

*/

#include <w32std.h>

#include <eikenv.h>

#include <apgtask.h>

#include <apgcli.h>

#include <e32property.h>

#include <hb/hbcore/hbdevicedialogsymbian.h>

#include <hb/hbcore/hbsymbianvariant.h>

#include <tspropertydefs.h>

#include <afactivitylauncher.h>

#include <homescreendomainpskeys.h>

#include "hsappkeyplugin.h"

_LIT( KHsActivactionUri, "appto://20022F35?activityname=HsIdleView" );

_LIT( KAppLibActivactionUri, "appto://20022F35?activityname=AppLibMainView" );

_LIT( KTsPluginName, "com.nokia.taskswitcher.tsdevicedialogplugin/1.0" );

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

// ---------------------------------------------------------------------------

//

// ---------------------------------------------------------------------------

//

CHsAppKeyPlugin::CHsAppKeyPlugin()

    : iEikEnv( CEikonEnv::Static() ) // codescanner::eikonenvstatic

    {

    }

// ---------------------------------------------------------------------------

// Two-phased constructor.

// ---------------------------------------------------------------------------

//

CHsAppKeyPlugin* CHsAppKeyPlugin::NewL()

    {

    CHsAppKeyPlugin* self = new ( ELeave ) CHsAppKeyPlugin;

    return self;

    }

// ---------------------------------------------------------------------------

// C++ Destructor

// ---------------------------------------------------------------------------

//

CHsAppKeyPlugin::~CHsAppKeyPlugin()

    {

    delete iDialog;

    }

// ---------------------------------------------------------------------------

// From MHbDeviceDialogObserver

//

// ---------------------------------------------------------------------------

//

void CHsAppKeyPlugin::DataReceived( CHbSymbianVariantMap& /*aData*/ )

    {

    //no implementation required

    }

// ---------------------------------------------------------------------------

// From MHbDeviceDialogObserver

//

// ---------------------------------------------------------------------------

//

void CHsAppKeyPlugin::DeviceDialogClosed( TInt /*aCompletionCode*/ )

    {

    delete iDialog;

    iDialog = 0;

    }

// ---------------------------------------------------------------------------

// From CSysapKeyHandlerPlugin

//

// ---------------------------------------------------------------------------

//

TKeyResponse CHsAppKeyPlugin::HandleKeyEventL( const TKeyEvent& aKeyEvent,  

                                               TEventCode /*aType*/ )

    {

    TKeyResponse retVal( EKeyWasNotConsumed );

    if ( aKeyEvent.iCode == EKeyApplication0 )

        {

        if ( aKeyEvent.iRepeats > 0 )

            {

            HandleLongPressL();

            }

        else

            {

            HandleShortPressL();

            }

        retVal = EKeyWasConsumed;

        }

    return retVal;

    }

// ---------------------------------------------------------------------------

// From CSysapKeyHandlerPlugin

//

// ---------------------------------------------------------------------------

//

void CHsAppKeyPlugin::ProvideKeyEventsL( RArray<TKeyEvent>& aKeyEventArray ) // codescanner::LFunctionCantLeave

    {

    TKeyEvent key;

    key.iCode = EKeyApplication0;

    key.iScanCode = EStdKeyApplication0;

    key.iModifiers = 0;

    key.iRepeats = 0;

    aKeyEventArray.Append( key );

    TKeyEvent longkey;

    longkey.iCode = EKeyApplication0;

    longkey.iScanCode = EStdKeyApplication0;

    longkey.iModifiers = 0;

    longkey.iRepeats = 1;

    aKeyEventArray.Append( longkey );

    }

// ---------------------------------------------------------------------------

//

// ---------------------------------------------------------------------------

//

void CHsAppKeyPlugin::HandleShortPressL()

    {

    TInt value( 0 );

    RProperty::Get( TsProperty::KCategory, TsProperty::KVisibilityKey, value );

    if ( value )

        {

        // when Task Switcher dialog is visible, Appkey is used to dismiss it

        DismissTaskSwitcher();

        }

    else

        {

        // when there is no Task Switcher dialog, Appkey is used to switch between Applib and HomeScreen

        RApaLsSession apaLsSession;

        CleanupClosePushL( apaLsSession );

        User::LeaveIfError( apaLsSession.Connect() );

        CAfActivityLauncher* activityEnabler =

            CAfActivityLauncher::NewLC( apaLsSession,

                                        iEikEnv->WsSession() );

        TInt state( 0 );

        RProperty::Get( KHsCategoryUid, KHsCategoryStateKey, state );

        if ( state == EHomeScreenWidgetViewForeground )

            {

            activityEnabler->launchActivityL( KAppLibActivactionUri );

            }

            {

            activityEnabler->launchActivityL( KHsActivactionUri );

        CleanupStack::PopAndDestroy( activityEnabler );

        CleanupStack::PopAndDestroy( &apaLsSession );

        }

    }

// ---------------------------------------------------------------------------

//

// ---------------------------------------------------------------------------

//

void CHsAppKeyPlugin::HandleLongPressL()

    {

    TInt tsVisible( 0 );

    RProperty::Get( TsProperty::KCategory,

                    TsProperty::KVisibilityKey,

                    tsVisible );

    if ( tsVisible ) 

        {

        DismissTaskSwitcher();

        } 

    else 

        {

        if ( !iDialog )

            {

            iDialog = CHbDeviceDialogSymbian::NewL();

            CHbSymbianVariantMap* params = CHbSymbianVariantMap::NewL();

            if ( KErrNone != iDialog->Show( KTsPluginName, *params, this ) )

                {

                delete iDialog;

                iDialog = 0;

                }

            delete params;

            }

        }

    }

// ---------------------------------------------------------------------------

//

// ---------------------------------------------------------------------------

//

void CHsAppKeyPlugin::DismissTaskSwitcher()

    {

    // @todo: remove notification through property when SharedDialog flag

    // is implemented in Orbit.

    if ( !iDialog )

        {

        // dismiss dialog launched from HomeScreen

        User::LeaveIfError( RProperty::Set( TsProperty::KCategory, TsProperty::KDismissRequestKey, 1 ) );

        }

    else

        {

        // dismiss dialog launched by this plugin

        delete iDialog;

        iDialog = 0;

        }

    }