/*

* Copyright (c) 2005-2007 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:  Implementation for wrapper for a volume control component

*

*/

#include <e32base.h>

#include <coecntrl.h>

#include <barsread.h>

#include <barsc.h>

#include <Aknvolumecontrol.h>

#include "xnnodepluginif.h"

#include "xndompropertyvalue.h"

#include "xndomproperty.h"

#include "xndomlist.h"

#include "xnproperty.h"

#include "xncomponent.h"

#include "xnuienginepluginif.h"

#include "xncomponentnodeimpl.h"

#include "xncontroladapter.h"

#include "xntype.h"

#include "xnvolumecontroladapter.h"

#include "xnvolumecontrolobserver.h"

#include "xnvolumecontrol.rsg"

_LIT( KResourceFileName, "z:\\resource\\plugins\\xn3volumecontrol.rsc" );

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

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

// CXnVolumeControlAdapter::NewL

// Symbian static 1st phase constructor

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

//

CXnVolumeControlAdapter* CXnVolumeControlAdapter::NewL(CXnControlAdapter* aParent, 

                                                       CXnNodePluginIf& aNode)

    {

	CXnVolumeControlAdapter* self = new( ELeave ) CXnVolumeControlAdapter(aParent, aNode);

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop();

    return self;	

    }

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

// CXnVolumeControlAdapter::CXnVolumeControlAdapter

// C++ default constructor

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

//

CXnVolumeControlAdapter::CXnVolumeControlAdapter(CXnControlAdapter* aParent, 

                                                 CXnNodePluginIf& aNode)

    : iParent( aParent ), iNode( aNode )

    {

    }

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

// CXnVolumeControlAdapter::~CXnVolumeControlAdapter

// C++ destructor

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

//

CXnVolumeControlAdapter::~CXnVolumeControlAdapter()

    {

    delete iVolumeControl;

    }

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

// CXnVolumeControlAdapter::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CXnVolumeControlAdapter::ConstructL()

    { 

    ConstructVolumeControlL();

    iVolumeControl->SetValue( ValueL() );

    CXnControlAdapter::ConstructL( iNode );

    }

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

// CXnVolumeControlAdapter::ConstructVolumeControL

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

//    

void CXnVolumeControlAdapter::ConstructVolumeControlL()

	{	

	delete iVolumeControl;

	iVolumeControl = NULL;

    iVolumeControl = new ( ELeave ) CAknVolumeControl;

    iVolumeControl->SetContainerWindowL( *iParent );		

    iVolumeControl->SetBackground( this );

	RFs fsSession;

	TInt err( fsSession.Connect() );

    if( err )	    

	    {

	    User::Leave( err );

	    }

	CleanupClosePushL( fsSession );

	RResourceFile resourceFile;		

	resourceFile.OpenL( fsSession, KResourceFileName );	

	CleanupClosePushL( resourceFile );

	HBufC8* resource = resourceFile.AllocReadLC( R_XNVOLUMECONTROLDYNAMIC );

	TResourceReader reader;	

	reader.SetBuffer( resource );

	iVolumeControl->ConstructFromResourceL( reader );

	iVolumeControl->SetRect( iNode.Rect() );

	CleanupStack::PopAndDestroy( 3, &fsSession  ); // resource, resourceFile, fsSession

	SetVolumeControlPropertiesL();		

	}

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

// CXnVolumeControlAdapter::SetObserver

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

//      

void CXnVolumeControlAdapter::SetObserver( MXnVolumeControlObserver* aObserver )

    {

    iObserver = aObserver;

    }

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

// CXnVolumeControlAdapter::SetValue

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

//    

void CXnVolumeControlAdapter::SetValueL( TInt aValue )

	{

	TInt minRange;

	TInt maxRange;

	GetRangeL( minRange, maxRange );

	if( aValue >= minRange && aValue <= maxRange )

		{		    	

		CXnDomStringPool& sp = iNode.UiEngineL()->StringPool();		

		CXnDomPropertyValue* value = CXnDomPropertyValue::NewL( &sp );

		CleanupStack::PushL( value );

		value->SetFloatValueL( CXnDomPropertyValue::ENumber, aValue );

		CXnProperty* valueProperty = CXnProperty::NewL( XnPropertyNames::action::KValue, value, sp );

		CleanupStack::Pop( value );

		CleanupStack::PushL( valueProperty );

		iNode.SetPropertyL( valueProperty );

		CleanupStack::Pop( valueProperty );

		}

	}

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

// CXnVolumeControlAdapter::Value

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

//

TInt CXnVolumeControlAdapter::ValueL()

	{

	return GetCurrentValueL();

	}

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

// CXnVolumeControlAdapter::SetRange

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

//	

void CXnVolumeControlAdapter::SetRangeL( TInt aMinimumValue, TInt aMaximumValue )

	{

	CXnDomStringPool& sp = iNode.UiEngineL()->StringPool();

	// Set min value property

	CXnDomPropertyValue* minValue = CXnDomPropertyValue::NewL( &sp );

	CleanupStack::PushL( minValue );

	minValue->SetFloatValueL( CXnDomPropertyValue::ENumber, aMinimumValue );

	CXnProperty* minValueProperty = CXnProperty::NewL( XnPropertyNames::volumecontrol::KMinRange, minValue, sp );

	CleanupStack::Pop( minValue );

	CleanupStack::PushL( minValueProperty );

	iNode.SetPropertyL( minValueProperty );

	CleanupStack::Pop( minValueProperty );

	// Set max value property

	CXnDomPropertyValue* maxValue = CXnDomPropertyValue::NewL( &sp );

	CleanupStack::PushL( maxValue );

	maxValue->SetFloatValueL( CXnDomPropertyValue::ENumber, aMaximumValue );

	CXnProperty* maxValueProperty = CXnProperty::NewL( XnPropertyNames::volumecontrol::KMaxRange, maxValue, sp );

	CleanupStack::Pop( maxValue );

	CleanupStack::PushL( maxValueProperty );

	iNode.SetPropertyL( maxValueProperty );

	CleanupStack::Pop( maxValueProperty );

	iVolumeControl->SetRange( aMinimumValue, aMaximumValue );

	iSteps = aMaximumValue - aMinimumValue;

	}

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

// CXnVolumeControlAdapter::GetRange

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

//	

void CXnVolumeControlAdapter::GetRangeL( TInt& aMinimumValue, TInt& aMaximumValue )

	{

	CXnProperty* minRange = iNode.GetPropertyL( XnPropertyNames::volumecontrol::KMinRange );

	if ( minRange )

	    {

	    aMinimumValue = static_cast<TInt>( minRange->FloatValueL() );

	    }

	else

	    {

	    aMinimumValue = 1;

	    }

	CXnProperty* maxRange = iNode.GetPropertyL( XnPropertyNames::volumecontrol::KMaxRange );

	if ( maxRange )

	    {

	    aMaximumValue = static_cast<TInt>( maxRange->FloatValueL() );

	    }

	else

	    {

	    aMaximumValue = aMinimumValue;

	    }

	}

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

// CXnVolumeControlAdapter::DoHandlePropertyChangeL

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

//

void CXnVolumeControlAdapter::DoHandlePropertyChangeL( CXnProperty* aProperty )

    {

    if (aProperty)

    	{

    TInt minValue;

    TInt maxValue;

    GetRangeL( minValue, maxValue );

    if( aProperty->Property()->Name() == XnPropertyNames::volumecontrol::KVolumeLevelAdjustment )

    	{

    	CXnDomStringPool& sp = iNode.UiEngineL()->StringPool();

    	CXnDomPropertyValue* value = CXnDomPropertyValue::NewL( &sp );

    	CleanupStack::PushL( value );

    	const TDesC8& strValue = aProperty->StringValue();

    	// Increase volume

    	if( strValue == XnPropertyNames::volumecontrol::KIncrease )

    		{

    		TInt newValue = ValueL() + 1;

    		if( newValue >= minValue && newValue <= maxValue )

    			{

    			value->SetFloatValueL( CXnDomPropertyValue::ENumber, ValueL() + 1 );

    			}

    		else

    			{

    			CleanupStack::PopAndDestroy( value );    			

    			return;

    			}

    		}

    	// Decrease volume

    	else if( strValue == XnPropertyNames::volumecontrol::KDecrease )

    		{

    		TInt newValue = ValueL() - 1;

    		if( newValue >= minValue && newValue <= maxValue )

    			{    		

    			value->SetFloatValueL( CXnDomPropertyValue::ENumber, ValueL() - 1 );

    			}

    		else

    			{

    			CleanupStack::PopAndDestroy( value );    			

    			return;

    			}    			

    		}

    	// Mute

    	else if( strValue == XnPropertyNames::volumecontrol::KMute )

    		{

    		if( iMuted )

    			{

    			value->SetFloatValueL( CXnDomPropertyValue::ENumber, iMutedValue );

    			iMuted = EFalse;

    			}

    		else

    			{

    			value->SetFloatValueL( CXnDomPropertyValue::ENumber, minValue );

    			iMutedValue = GetCurrentValueL();

    			iMuted = ETrue;

    			}

    		}

    	CXnProperty* valueProperty = CXnProperty::NewL( XnPropertyNames::action::KValue, value, sp );

    	CleanupStack::Pop( value );

    	CleanupStack::PushL( valueProperty );

    	iNode.SetPropertyL( valueProperty );

    	CleanupStack::Pop( valueProperty );  	

    	}

   	else if( aProperty->Property()->Name() == XnPropertyNames::action::KValue )

   		{

   		TInt newValue = static_cast<TInt>( aProperty->FloatValueL() );

   		if( newValue >= minValue && newValue <= maxValue )

   			{

   			iVolumeControl->SetValue( newValue );

   			NotifyObserverL();

	   			}

   			}

    	}

    else

    	{

    	return;

   		}

    }

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

// CXnVolumeControlAdapter::HandleScreenDeviceChangedL

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

//

void CXnVolumeControlAdapter::HandleScreenDeviceChangedL()

    {

    ConstructVolumeControlL();

    CXnControlAdapter::HandleScreenDeviceChangedL();

    }

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

// CXnVolumeControlAdapter::SizeChanged()

// Called by framework when the view size is changed

// (other items were commented in a header).

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

//

void CXnVolumeControlAdapter::SizeChanged()

    {

    CXnControlAdapter::SizeChanged();

    if( iVolumeControl )

        {

        iVolumeControl->SetRect( iNode.Rect() );

        }	

    }

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

// CXnVolumeControlAdapter::CountComponentControls

// Returns the number of component controls.

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

//    

TInt CXnVolumeControlAdapter::CountComponentControls() const

	{

    return 1;

	}

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

// CXnVolumeControlAdapter::ComponentControl

// Returns the component control of the given index

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

//	

CCoeControl* CXnVolumeControlAdapter::ComponentControl( TInt aIndex ) const

	{

	if( aIndex == 0 )

	    {

	    return iVolumeControl;

	    }

	return NULL;

	}	

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

// CXnNewstickerAdapter::Draw

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

// 

void CXnVolumeControlAdapter::Draw(CWindowGc& aGc, const CCoeControl& /*aControl*/,

    const TRect& aRect) const

    {

    CXnControlAdapter::Draw( aRect, aGc );

    }

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

// CXnVolumeControlAdapter::Draw

// Draws the text component

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

//

void CXnVolumeControlAdapter::Draw(const TRect& aRect) const

    {

    CXnControlAdapter::Draw( aRect );

    }  

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

// CXnVolumeControlAdapter::HandlePointerEventL

// Handles the pointer events.

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

//

void CXnVolumeControlAdapter::HandlePointerEventL( const TPointerEvent& aPointerEvent )

    {    

    TRect rect( iVolumeControl->Rect() );

    TReal incrementWidth( TReal( rect.Width() ) / iSteps );

    TInt leftX( rect.iTl.iX );

    if( aPointerEvent.iType == TPointerEvent::EButton1Down || 

        aPointerEvent.iType == TPointerEvent::EMove && iButton1Down )        

        {   

        // By default change the value

        TBool valueSet( EFalse );

        for( TInt i = 1; i <= iSteps && !valueSet; i++ )

            {            

            // Calculate pixel range 

            TReal minX( leftX + ( ( i - 1 ) * incrementWidth ) );

            TReal maxX( minX + incrementWidth );

            if( aPointerEvent.iPosition.iX >= minX && aPointerEvent.iPosition.iX <= maxX )                

                {                     

                TBool changeValue( ETrue );

                if( iHitRect == TRect::EUninitialized )

                    {

                    // Initialize                                    

                    iHitRect = TRect( minX, rect.iTl.iY, maxX, rect.iBr.iY );                       

                    }

                else if( !( iHitRect.Contains( aPointerEvent.iPosition ) ) )

                    {

                    // Reset, as position is changed

                    iHitRect = TRect( TRect::EUninitialized );

                    changeValue = EFalse;

                    }                        

                else

                    {

                    // Still in same slot, do not change value

                    changeValue = EFalse;

                    }                        

                if( changeValue )

                    {

                    TInt value = ValueL();

                    if( value == i )

                        {

                        value = value - 1;

                        }

                    else

                        {

                        value = i;

                        }                    

                    //SetValueL will notify also the observer

                    SetValueL( value );                       

                    DrawDeferred();                      

                    valueSet = ETrue;                                        

                    }

                }                                        

            }            

        }

    if( aPointerEvent.iType == TPointerEvent::EButton1Down )

        {

        iButton1Down = ETrue;

        }

    else if( aPointerEvent.iType == TPointerEvent::EButton1Up )

        {

        // Reset

        iButton1Down = EFalse;        

        iHitRect = TRect( TRect::EUninitialized );

        }        

	}

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

// CXnVolumeControlAdapter::SetVolumeControlProperties

// Sets CSS properties for the volume control

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

//	

void CXnVolumeControlAdapter::SetVolumeControlPropertiesL()

	{

	// Read minrange property

	CXnProperty* minRange = iNode.GetPropertyL( XnPropertyNames::volumecontrol::KMinRange );

	TInt minValue = 0;

	if( minRange )

		{

		minValue = static_cast<TInt>( minRange->FloatValueL() );

		}

	// Read maxrange property

	CXnProperty* maxRange = iNode.GetPropertyL( XnPropertyNames::volumecontrol::KMaxRange );

	TInt maxValue = 20;

	if( maxRange )

		{

		maxValue = static_cast<TInt>( maxRange->FloatValueL() );

		}

	SetRangeL( minValue, maxValue );

	TInt midRange( iSteps / 2 );

	TInt volValue( 0 );

	if( iVolumeControl->Value() < minValue ||

	    iVolumeControl->Value() > maxValue )

		{

		// Set around to mid

		volValue = midRange;	

		}

    // Read value property

	CXnProperty* value = iNode.GetPropertyL( XnPropertyNames::action::KValue );

	if( value )

		{

		TInt valueProp = static_cast< TInt >( value->FloatValueL() );

		if( valueProp >= minValue && valueProp <= maxValue )

		    {

		    volValue = valueProp;

		    }

		}

    SetValueL( volValue );			

	}