iapconnectdemosettings.cpp

symbian关于Internet访问的代码

/*
* ============================================================================
*  Name     : CIAPConnectDemoSettings from IAPConnectDemoSettings.cpp
*  Part of  : Internet Access Points Example v2.0
*  Created  : 01.09.2006 by Forum Nokia
*  Version  : 2.0
*  Copyright: Forum Nokia
* ============================================================================
*/

// INCLUDE FILES
#include "IAPConnectDemoSettings.h" // header
#include "e32math.h" //logarithm

// CONSTANTS
const TUint KNumberMaxLength = 10;

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

// Constructor
CIAPConnectDemoSettings::CIAPConnectDemoSettings()
 	{
	}

// Destructor.
CIAPConnectDemoSettings::~CIAPConnectDemoSettings()
	{
    TInt i = 0;
    while (i < iSettings.Count())
    {
        delete iSettings[i].iValue;
        iSettings[i].iValue = NULL;
        i++;
    }
    iSettings.Reset();
	}

// ---------------------------------------------------------------------------
// CIAPConnectDemoSettings::AddSettingL()
// Greate new descriptor and copy value
// ---------------------------------------------------------------------------
//	
void CIAPConnectDemoSettings::AddSettingL( const TInt& aKey, 
    const TDesC& aValue )
	{
	HBufC* value = HBufC::NewLC(aValue.Length());
	TPtr ptr2(value->Des());
	ptr2.Copy(aValue);
	
	//Add value to list
	AddPairL( aKey, value );
	CleanupStack::Pop(value);
	}

// ---------------------------------------------------------------------------
// CIAPConnectDemoSettings::AddSettingL()
// Greate new descriptor and copy value
// Because all values are saved in descriptor, numbers must convert
// ---------------------------------------------------------------------------
//	
void CIAPConnectDemoSettings::AddSettingL( const TInt& aKey, 
    const TInt& aValue )
	{
	HBufC* value = HBufC::NewLC( KNumberMaxLength );
	TPtr ptr2(value->Des());
	ptr2.AppendNum( aValue );
	
	AddPairL( aKey, value);	
	CleanupStack::Pop(value);
	}
	

// ---------------------------------------------------------------------------
// CIAPConnectDemoSettings::AddPairL()
// Greate new SettingsPair class if key doesn't exist otherwise only change
// value
// ---------------------------------------------------------------------------
//	
void CIAPConnectDemoSettings::AddPairL( const TInt& aKey, HBufC* aValue)
	{
	TUint index = 0;
	if ( KeyIndex( aKey, index ) != KErrNone)
		{
		//aKey isn't found from list
		//Transfer value's ownership
		TDemoSettingsPair pair;
        pair.iKey = aKey;
        pair.iValue = aValue;
		iSettings.AppendL( pair );
		}
	else
		{
        // Delete the old value and replace it with a new one
        delete iSettings[ index ].iValue;
        iSettings[ index ].iValue = NULL;
		iSettings[ index ].iValue = aValue; 
        }

	}

// ---------------------------------------------------------------------------
// CIAPConnectDemoSettings::GetSetting()
// Return key's value in reference parameter if key exist
// ---------------------------------------------------------------------------
//		
TInt CIAPConnectDemoSettings::GetSetting( const TInt& aKey, 
    TDesC& aValue ) const
	{
	TUint index = 0;
	if ( KeyIndex( aKey, index ) != KErrNone)
		{
		return KErrNotFound;
		}

	aValue = iSettings[ index ].iValue -> Des();
	return KErrNone;	
	}

// ---------------------------------------------------------------------------
// CIAPConnectDemoSettings::GetSetting()
// Return key's value in reference parameter if key exist
// ---------------------------------------------------------------------------
//		
TInt CIAPConnectDemoSettings::GetSetting( const TInt& aKey, 
    HBufC*& aValue) const
	{
	TUint index = 0;
	if ( KeyIndex( aKey, index ) != KErrNone)
		{
		return KErrNotFound;
		}
	
	aValue = iSettings[ index ].iValue;
	return KErrNone;
	}
	
// ---------------------------------------------------------------------------
// CIAPConnectDemoSettings::GetSetting()
// Return key's value in reference parameter if key exist
// Before return, descriptor must change to integer
// ---------------------------------------------------------------------------
//	
TInt CIAPConnectDemoSettings::GetSetting( const TInt& aKey, 
    TInt& aValue ) const
	{
	TUint index = 0;
	if ( KeyIndex( aKey, index ) != KErrNone)
		{
		return KErrNotFound;
		}	

	TLex converter ( iSettings[ index ].iValue -> Des() );
		
	TInt error = converter.Val( aValue );
	if ( error != KErrNone ) 
		{
		return error;
		}
	
	return KErrNone;
	}

// ---------------------------------------------------------------------------
// CIAPConnectDemoSettings::KeyIndex()
// Search key's index in list. Return errorcode, if key is not found
// ---------------------------------------------------------------------------
//		
TInt CIAPConnectDemoSettings::KeyIndex( const TInt& aKey, 
    TUint& index) const
	{
	while ( index < static_cast<TUint>( iSettings.Count()) && 
        iSettings[ index ].iKey != aKey)
		{
		++index;	
		}
	if (index == static_cast<TUint> (iSettings.Count()))
		{
		return KErrNotFound;
		}
	else
		{
		return KErrNone;
		}
	}
	
// End of file