fmradio/fmradioengine/src/fmradiopropertyobserver.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 00:17:10 +0200
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Revision: 201003 Kit: 201005
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/*
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* Copyright (c) 2004-2007 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: Observer for FMRadio property values  
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*
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*/
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#include "fmradiopropertyobserver.h"
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// ============================ MEMBER FUNCTIONS ===============================
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// -----------------------------------------------------------------------------
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// C++ default constructor can NOT contain any code, that might leave.
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// -----------------------------------------------------------------------------
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//
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CFMRadioPropertyObserver::CFMRadioPropertyObserver(MFMRadioPropertyChangeObserver& aObserver, const TUid& aCategory, const TUint aKey, const TFMRadioPropertyType aPropertyType)
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    : CActive( CActive::EPriorityStandard ),
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    iObserver( aObserver ),
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    iCategory( aCategory ),
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    iKey( aKey ),
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    iPropertyType( aPropertyType )
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	{
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	}
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// -----------------------------------------------------------------------------
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// Symbian 2nd phase constructor can leave.
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// -----------------------------------------------------------------------------
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//
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void CFMRadioPropertyObserver::ConstructL()
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	{
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    switch (iPropertyType)
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        {
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        case EFMRadioPropertyInt:
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	        {
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	        break;
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	        }
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	    case EFMRadioPropertyByteArray:
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	        {
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	        iValueByteArray = HBufC8::NewL( RProperty::KMaxPropertySize );
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	        break;
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	        }
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	    case EFMRadioPropertyText:
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	        {
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	        // Max size in bytes, length is size / 2
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	        iValueText = HBufC::NewL( RProperty::KMaxPropertySize / 2 );
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	        break;
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	        }
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	    default:
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	        {
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	        break;
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	        }
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        }
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    User::LeaveIfError( iProperty.Attach( iCategory, iKey ) );
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    CActiveScheduler::Add( this );
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	}
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// -----------------------------------------------------------------------------
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// Two-phased constructor.
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// -----------------------------------------------------------------------------
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//
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CFMRadioPropertyObserver* CFMRadioPropertyObserver::NewL( MFMRadioPropertyChangeObserver& aObserver,
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                                                          const TUid& aCategory,
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                                                          const TUint aKey,
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                                                          const TFMRadioPropertyType aPropertyType )
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    {
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    CFMRadioPropertyObserver* self = NewLC( aObserver,
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                                            aCategory,
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                                            aKey,
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                                            aPropertyType );
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    CleanupStack::Pop( self );
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    return self;
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    }
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// -----------------------------------------------------------------------------
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// Two-phased constructor.
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// -----------------------------------------------------------------------------
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//
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CFMRadioPropertyObserver* CFMRadioPropertyObserver::NewLC( MFMRadioPropertyChangeObserver& aObserver,
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														  const TUid& aCategory,
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														  const TUint aKey,
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														  const TFMRadioPropertyType aPropertyType )
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	{
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    CFMRadioPropertyObserver* self = new( ELeave )CFMRadioPropertyObserver( aObserver,
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    																   		aCategory,
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    																   		aKey,
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    																   		aPropertyType );
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    CleanupStack::PushL( self );
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    self->ConstructL();
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    return self;
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	}
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// -----------------------------------------------------------------------------
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// Destructor
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// -----------------------------------------------------------------------------
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//
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CFMRadioPropertyObserver::~CFMRadioPropertyObserver()
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	{
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	Cancel();
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    iProperty.Close();
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    delete iValueByteArray;
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parents:
diff changeset
   113
    delete iValueText;
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parents:
diff changeset
   114
	}
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parents:
diff changeset
   115
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   116
// ---------------------------------------------------------------------------
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   117
// Subscribes to a property and reads the value, if not already active.
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   118
// ---------------------------------------------------------------------------
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   119
//
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   120
void CFMRadioPropertyObserver::ActivateL()
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   121
	{
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   122
    if ( !IsActive() )
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parents:
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   123
        {
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   124
        RunL();
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   125
        }
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   126
	}
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parents:
diff changeset
   127
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   128
// -----------------------------------------------------------------------------
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   129
// CFMRadioPropertyObserver::RunL
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   130
// -----------------------------------------------------------------------------
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   131
//
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   132
void CFMRadioPropertyObserver::RunL()
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   133
	{	
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   134
    iProperty.Subscribe( iStatus );
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   135
    SetActive();
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parents:
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   136
    
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   137
    TInt err(KErrNone);
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parents:
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   138
    
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   139
    switch (iPropertyType)
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   140
        {
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   141
        case EFMRadioPropertyInt:
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   142
	        {
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   143
	        err = iProperty.Get( iValueInt );
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   144
	        if (!err)
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   145
            	{
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   146
                iObserver.HandlePropertyChangeL( iCategory, iKey, iValueInt );
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   147
             	}
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   148
	        break;
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   149
	        }
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   150
		case EFMRadioPropertyByteArray:
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   151
	        {
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   152
	        TPtr8 ptr8( iValueByteArray->Des() );
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   153
	        err = iProperty.Get( ptr8 );
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   154
	        if (!err)
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parents:
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   155
            	{
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parents:
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   156
                iObserver.HandlePropertyChangeL( iCategory, iKey, *iValueByteArray );
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   157
             	}
f3d95d9c00ab Revision: 201003
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   158
	        break;		        
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   159
	        }
f3d95d9c00ab Revision: 201003
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   160
		case EFMRadioPropertyText:
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parents:
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   161
	        {
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   162
	        TPtr ptr( iValueText->Des() );
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   163
	        err = iProperty.Get( ptr );
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parents:
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   164
	        if (!err)
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parents:
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   165
            	{
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parents:
diff changeset
   166
                iObserver.HandlePropertyChangeL( iCategory, iKey, *iValueText );
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diff changeset
   167
             	}
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   168
	        break;			        
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   169
	        }
f3d95d9c00ab Revision: 201003
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parents:
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   170
	        
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parents:
diff changeset
   171
	    default:
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   172
	        {
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   173
	        break;
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   174
	        }
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   175
        }
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   176
    
f3d95d9c00ab Revision: 201003
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   177
    if (err)
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   178
    	{
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parents:
diff changeset
   179
        iObserver.HandlePropertyChangeErrorL(iCategory, iKey, err);
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   180
     	}
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   181
	}
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   182
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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diff changeset
   183
// -----------------------------------------------------------------------------
f3d95d9c00ab Revision: 201003
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parents:
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   184
// Cancels an outstanding active request
f3d95d9c00ab Revision: 201003
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parents:
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   185
// -----------------------------------------------------------------------------
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   186
//
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   187
void CFMRadioPropertyObserver::DoCancel()
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   188
	{
f3d95d9c00ab Revision: 201003
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   189
    iProperty.Cancel();
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   190
	}
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   191
f3d95d9c00ab Revision: 201003
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   192
// -----------------------------------------------------------------------------
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   193
// Getter for integer value
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   194
// -----------------------------------------------------------------------------
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   195
//	
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   196
TInt CFMRadioPropertyObserver::ValueInt( TBool aUpdate )
f3d95d9c00ab Revision: 201003
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diff changeset
   197
	{
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   198
	if( aUpdate )
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   199
	    {
f3d95d9c00ab Revision: 201003
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parents:
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   200
	    iProperty.Get( iValueInt );
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   201
	    }
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   202
	return iValueInt;
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   203
	}
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   204
	
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   205
// -----------------------------------------------------------------------------
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   206
// Getter for byte array value
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   207
// -----------------------------------------------------------------------------
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   208
//	
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   209
const TDesC8& CFMRadioPropertyObserver::ValueDes8( TBool aUpdate )
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   210
	{
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   211
   if( aUpdate )
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   212
        {
f3d95d9c00ab Revision: 201003
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diff changeset
   213
    	TPtr8 ptr8( iValueByteArray->Des() );
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   214
    	iProperty.Get( ptr8 );
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   215
        }
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   216
	return *iValueByteArray;
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   217
	}
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   218
	
f3d95d9c00ab Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   219
// -----------------------------------------------------------------------------
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   220
// Getter for text value
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   221
// -----------------------------------------------------------------------------
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   222
//	
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   223
const TDesC& CFMRadioPropertyObserver::ValueDes( TBool aUpdate )
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   224
	{
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   225
   if( aUpdate )
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   226
        {
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parents:
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   227
    	TPtr ptr( iValueText->Des() );
f3d95d9c00ab Revision: 201003
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parents:
diff changeset
   228
    	iProperty.Get( ptr );
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        }
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	return *iValueText;
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	}
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