webengine/widgetengine/src/Preferences.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 31 Aug 2010 16:17:46 +0300
branchRCL_3
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parent 44 800203832575
child 49 919f36ff910f
permissions -rw-r--r--
Revision: 201034 Kit: 201035
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/*
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* Copyright (c) 2006 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 the License "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:  This class represents the Widget Preferences object
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*
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*/
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// INCLUDE FILES
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#include <e32std.h>
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#include <s32file.h>
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#include <f32file.h>
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#include <uri16.h>
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#include <e32hashtab.h>
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#include "Preferences.h"
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// EXTERNAL DATA STRUCTURES
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// EXTERNAL FUNCTION PROTOTYPES
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// CONSTANTS
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const TInt KMaxIntLength = 10;
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const TInt KMaxKeyValueSize = 4096; //4 k
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_LIT( KKeyFormat, "%d.%S" );
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_LIT( KPrefsFile,"prefs.dat" );
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// ----------------------------------------------------------------------------
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// WidgetPreferences::WidgetPreferences
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// C++ Constructor
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//
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//
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// ----------------------------------------------------------------------------
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WidgetPreferences::WidgetPreferences() :m_widgetid(0),
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                                        m_widgetbundleid(0),
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                                        m_basepath(0),
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                                        m_filepath(0)
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{
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    m_preferences = new RPtrHashMap<TDesC,PrefElement>();    
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}
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// ----------------------------------------------------------------------------
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// WidgetPreferences::~WidgetPreferences
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// Destructor
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//
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//
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// ----------------------------------------------------------------------------
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WidgetPreferences::~WidgetPreferences()
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{
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    //TRAP_IGNORE( saveL() );
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    if (m_preferences) {
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        m_preferences->ResetAndDestroy();
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        m_preferences->Close();
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        delete m_preferences;        
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    }
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    delete m_basepath;
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    delete m_widgetbundleid;        
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    delete m_filepath; 
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}
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// ----------------------------------------------------------------------------
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// WidgetPreferences::setBasePathL
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//
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//
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// ----------------------------------------------------------------------------
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void WidgetPreferences::setBasePathL(const TDesC& aValue)
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{
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    m_basepath = aValue.AllocL();    
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}
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// ----------------------------------------------------------------------------
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// WidgetPreferences::setWidgetId
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//
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//
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// ----------------------------------------------------------------------------
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void WidgetPreferences::setWidgetId(TInt aValue)
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{
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    m_widgetid = aValue;
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}
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// ----------------------------------------------------------------------------
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// WidgetPreferences::setBundleIdL
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//
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//
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// ----------------------------------------------------------------------------
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void WidgetPreferences::setWidgetBundleId(const TDesC& aValue)
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{
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    m_widgetbundleid = aValue.AllocL();
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}
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// ----------------------------------------------------------------------------
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// WidgetPreferences::setBundleIdL
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//
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//
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// ----------------------------------------------------------------------------
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TDesC& WidgetPreferences::getWidgetBundleId()
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{
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   return *m_widgetbundleid;
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}
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// ----------------------------------------------------------------------------
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// WidgetPreferences::PreferenceL
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// Get preference for a key
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//
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//
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// ----------------------------------------------------------------------------
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TInt WidgetPreferences::preferenceL( const TDesC& akey, HBufC*& avalue)
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{
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    TInt rSuccess = KErrNotFound;
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    TInt size = 0;
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    if ( !m_basepath || (m_basepath->Length() <= 0) )
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        return rSuccess;
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    if ( akey.Length() <= KMaxKeyValueSize ) {
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        HBufC* k = HBufC::NewLC( akey.Length() + KMaxIntLength + 1 );
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        k->Des().Format( KKeyFormat, m_widgetid, &akey );
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        PrefElement* pref = m_preferences->Find( *k );
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        if ( !pref ) {
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            CleanupStack::PopAndDestroy( k );
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            return rSuccess;
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        }
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        size = pref->valueSize();            
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        if ( size > KMaxKeyValueSize ) {
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            // return contents from temp file whose name is stored 
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            // in the m_value member of m_preferences
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            RFs fs;
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            if ( fs.Connect() == KErrNone ) {
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                CleanupClosePushL( fs );
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                HBufC* filePath = HBufC::NewLC( pref->value().Length() );
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                TPtr fName( filePath->Des() );
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                fName.Append( pref->value() );
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                RFileReadStream readStream;
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                if ( readStream.Open( fs, *filePath, EFileRead ) == KErrNone ) {
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                    CleanupClosePushL( readStream );
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                    TInt len( readStream.ReadInt32L() );
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                    if ( len > 0 ) {                                       
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                        HBufC* v = HBufC::NewLC( len );
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                        TPtr ptrvalue = v->Des();
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                        readStream.ReadL( ptrvalue, len );    
5
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                        avalue = v; // ownership xfered
0
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                        CleanupStack::Pop( v );
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                        rSuccess = KErrNone;
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                    }     
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                    CleanupStack::PopAndDestroy();//readStream
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                }   
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                CleanupStack::PopAndDestroy( 2 ); //filePath,fs
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            }
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        }        
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        else if ( size >= 0 ) {
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            avalue = pref->value().AllocL();
0
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            rSuccess = KErrNone;
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        }
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        CleanupStack::PopAndDestroy( k );
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    }
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    return rSuccess;
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}
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// ----------------------------------------------------------------------------
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// WidgetPreferences::SetPreferenceL
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// set Preference for a key
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//
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//
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// ----------------------------------------------------------------------------
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void WidgetPreferences::setPreferenceL( const TDesC& akey, const TDesC& avalue)
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{
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    if ( !m_basepath || (m_basepath->Length() <= 0) )
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        return;
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    if ( akey.Length() <= KMaxKeyValueSize ) {
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        HBufC* k = HBufC::NewLC( akey.Length() + KMaxIntLength + 1 );
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        k->Des().Format( KKeyFormat, m_widgetid, &akey );
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        // if hash has the key and its value
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        // delete the old value later when the new value was successfully updated
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        PrefElement* prefExisting = NULL;
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        prefExisting = m_preferences->Find( *k );                            
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        if ( avalue.Length() <= KMaxKeyValueSize ) {
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            PrefElement* pref = new (ELeave) PrefElement;   
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            CleanupStack::PushL( pref );   
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            pref->setValueL( avalue );
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            pref->setValueSize( avalue.Length() );
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            m_preferences->InsertL( k, pref );
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            CleanupStack::Pop(); //pref   
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        }
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        else {
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            // create a temp file and save the value in temp file. 
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            // m_value member of PrefElement contains the temp file name.
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            RFs fs;
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            RFile file;
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            if ( fs.Connect() == KErrNone ) {
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                CleanupClosePushL( fs );
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                // create and write to file
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                TFileName tempFileName;
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                file.Temp( fs, *m_basepath, tempFileName, EFileWrite|EFileShareExclusive );
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                CleanupClosePushL( file );
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                HBufC* filePath = HBufC::NewLC( tempFileName.Length() );
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                TPtr fName( filePath->Des() );
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                fName.Append( tempFileName );
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                RFileWriteStream writeStream( file );
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                CleanupClosePushL( writeStream );        
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                TRAPD( err, 
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   231
                    writeStream.WriteInt32L( avalue.Length() );
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                    writeStream.WriteL( avalue );             
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   233
                    writeStream.CommitL(); );
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   234
                // If an error occured while writing to the file, delete the temp file
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   235
                // This should be the case when disk is full
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   236
                if ( err != KErrNone )
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   237
                    {
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                    CleanupStack::PopAndDestroy( ); //writeStream
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   239
                    file.Close();
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                    fs.Delete( *filePath );
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   241
                    User::Leave( err );
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                    }
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                // create new preference element
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                PrefElement* pref = new ( ELeave ) PrefElement;
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                CleanupStack::PushL( pref );  
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                pref->setValueSize( avalue.Length() );
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                pref->setValueL( *filePath );               
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                // update new preference element
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                m_preferences->InsertL( k, pref );
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                CleanupStack::Pop( pref );
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                CleanupStack::PopAndDestroy( ); //writeStream
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                CleanupStack::PopAndDestroy( 3 ); //filePath,file,fs
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            }           
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        }        
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        // now the new value is updated, it's safe to delete the old value
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        if ( prefExisting ) {
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            prefExisting->setCleanFileFlag( ETrue );
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            delete prefExisting;
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   262
        }
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        CleanupStack::Pop();   // k
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   265
48
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        // Save update to persistent storage
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		saveL();
0
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    }
48
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0
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}
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// ----------------------------------------------------------------------------
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// WidgetPreferences::removePreferenceL
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// remove Preference for a key
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//
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//
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// ----------------------------------------------------------------------------
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void WidgetPreferences::removePreferenceL( const TDesC& akey, const TDesC& avalue)
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{
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    if ( !m_basepath || (m_basepath->Length() <= 0) )
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        return;
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    // double check value is NULL
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    if ( avalue != KNullDesC ) {
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        return;
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        }
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    if ( akey.Length() <= KMaxKeyValueSize ) {
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        HBufC* k = HBufC::NewLC( akey.Length() + KMaxIntLength + 1 );
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        k->Des().Format( KKeyFormat, m_widgetid, &akey );
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        // if hash has the key and its value
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        // delete the old value later when the new value was successfully updated
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        PrefElement* prefExisting = NULL;
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        prefExisting = m_preferences->Find( *k );                            
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        m_preferences->Remove(k);
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        // now the new value is updated, it's safe to delete the old value
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        if ( prefExisting ) {
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            prefExisting->setCleanFileFlag( ETrue );
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            delete prefExisting;
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   304
        }
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   305
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        CleanupStack::PopAndDestroy();   // k
15
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   307
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        // Save update to persistent storage
48
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		saveL();
0
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    }
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}
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// ----------------------------------------------------------------------------
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// WidgetPreferences::SaveL
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// SAve preferences to persistent storage
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//
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//
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// ----------------------------------------------------------------------------
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void WidgetPreferences::saveL()
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   320
{
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   321
    if ( !m_basepath || (m_basepath->Length() <= 0) )
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   322
        return;
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   323
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   324
    RFs fs;
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   325
48
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   326
    if ( fs.Connect() == KErrNone ) {
0
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   327
        
48
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   328
        CleanupClosePushL( fs );
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   329
        HBufC* filePath = HBufC::NewLC( m_basepath->Length() + KPrefsFile().Length() );
0
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   330
48
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   331
        TPtr fName( filePath->Des() );
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   332
        fName.Append( *m_basepath );
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   333
        fName.Append( KPrefsFile );
0
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parents:
diff changeset
   334
48
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   335
        RFileWriteStream writeStream;
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   336
        TInt fileerror = writeStream.Replace( fs, *filePath, EFileWrite );
0
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   337
48
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   338
        if ( fileerror != KErrNone ) {
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   339
            fs.CreatePrivatePath( EDriveC );
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   340
            fileerror = writeStream.Create( fs, *filePath, EFileWrite|EFileShareExclusive );
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   341
        }
0
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   342
48
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diff changeset
   343
        if ( fileerror == KErrNone ) {
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   344
            CleanupClosePushL( writeStream );
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   345
            writeStream.WriteInt32L( m_preferences->Count() );
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diff changeset
   346
            
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   347
            TPtrHashMapIter<TDesC,PrefElement> it( *m_preferences );
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   348
            const TDesC* key;
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   349
            const PrefElement* pref;
26
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diff changeset
   350
48
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   351
            while ( ( key = it.NextKey() ) != 0 ) {
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   352
                pref = it.CurrentValue();
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diff changeset
   353
                writeStream.WriteInt32L( key->Length() );
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diff changeset
   354
                writeStream.WriteL( *key );
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diff changeset
   355
                writeStream.WriteInt32L( pref->value().Length() );
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parents: 44
diff changeset
   356
                writeStream.WriteL( pref->value() );
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diff changeset
   357
                writeStream.WriteInt32L( pref->valueSize() );
0
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parents:
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   358
            }
26
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parents: 15
diff changeset
   359
48
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   360
            writeStream.CommitL();
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   361
            CleanupStack::PopAndDestroy(); //writeStream
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   362
        }
26
cb62a4f66ebe Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 15
diff changeset
   363
48
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   364
        CleanupStack::PopAndDestroy( 2 ); //fs,filePath
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   365
    }
0
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   366
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   367
}
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   368
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   369
// ----------------------------------------------------------------------------
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   370
// WidgetPreferences::LoadL
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   371
// Load preferences from persistent storage
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   372
//
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   373
//
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   374
// ----------------------------------------------------------------------------
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   375
void WidgetPreferences::loadL()
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   376
{
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   377
    RFs fs;
48
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   378
    if ( !m_basepath || (m_basepath->Length() <= 0) )
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   379
        return;
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   380
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   381
    if ( fs.Connect() == KErrNone ) {
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   382
        CleanupClosePushL( fs );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   383
        HBufC* filePath = HBufC::NewLC( m_basepath->Length() + KPrefsFile().Length() );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   384
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   385
        TPtr fName( filePath->Des() );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   386
        fName.Append( *m_basepath );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   387
        fName.Append( KPrefsFile );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   388
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   389
        RFileReadStream readStream;
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   390
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   391
        if ( readStream.Open( fs, *filePath, EFileRead ) == KErrNone ) {
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   392
            CleanupClosePushL( readStream );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   393
            TInt count( readStream.ReadInt32L() );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   394
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   395
            for( TInt i = 0; i < count; i++ ) {
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   396
                TInt len = readStream.ReadInt32L();
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   397
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   398
                if ( len > 0 ) {
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   399
                    HBufC* key = HBufC::NewLC( len );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   400
                    TPtr ptrkey = key->Des();
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   401
                    readStream.ReadL( ptrkey, len );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   402
                    len = readStream.ReadInt32L();
0
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   403
48
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   404
                    if ( len <= KMaxKeyValueSize ) {
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   405
                        HBufC* value = HBufC::NewLC( len );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   406
                        TPtr ptrvalue = value->Des();
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   407
                        readStream.ReadL( ptrvalue, len );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   408
                        PrefElement* pref = new ( ELeave ) PrefElement;
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   409
                        CleanupStack::PushL( pref );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   410
                        pref->setValueL( ptrvalue );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   411
                        TInt size = readStream.ReadInt32L();
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   412
                        pref->setValueSize( size );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   413
                        m_preferences->InsertL( key, pref );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   414
                        CleanupStack::Pop(); //pref 
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   415
                        CleanupStack::PopAndDestroy(); //value
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   416
                        CleanupStack::Pop(); //key
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   417
                    }
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   418
                    else {
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   419
                        CleanupStack::PopAndDestroy( key );
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   420
                    }
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   421
                }
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   422
                else {
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   423
                    break;
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   424
                }
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   425
            }
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   426
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   427
            CleanupStack::PopAndDestroy(); //readStream
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   428
        }
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   429
79859ed3eea9 Revision: 201034
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 44
diff changeset
   430
        CleanupStack::PopAndDestroy( 2 ); //fs,filePath
26
cb62a4f66ebe Revision: 200951
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 15
diff changeset
   431
    }
44
800203832575 Revision: 201023
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents: 26
diff changeset
   432
}
0
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   433
    
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   434
// ----------------------------------------------------------------------------
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   435
// PrefElement::PrefElement
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   436
// C++ constructor
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   437
//
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   438
//
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   439
// ----------------------------------------------------------------------------    
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   440
PrefElement::PrefElement() : m_value (0), m_valuesize (0), m_cleanFileFlag (EFalse)
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   441
{
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   442
}
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   443
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   444
    
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   445
// ----------------------------------------------------------------------------
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   446
// PrefElement::~PrefElement
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   447
// Destructor
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   448
//
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   449
//
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   450
// ----------------------------------------------------------------------------
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   451
PrefElement::~PrefElement()
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   452
{
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   453
    // When we update the existing key with newer value:
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   454
    // if the value > 4k, which means a file was created to store the value;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   455
    // we need to delete the old file.
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   456
    // If called from ~Preferences(), we shouldn't do this -- cleanFileFlag is false
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   457
    if ( m_cleanFileFlag && m_valuesize > KMaxKeyValueSize ) {
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   458
        HBufC* filePathExisting = HBufC::NewLC( value().Length() );
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   459
        TPtr fName( filePathExisting->Des() );
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   460
        fName.Append( value() );
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   461
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   462
        RFs fs;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   463
        if ( fs.Connect() == KErrNone ) {
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   464
            fs.Delete(*filePathExisting);
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   465
            fs.Close();
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   466
        }              
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   467
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   468
        CleanupStack::PopAndDestroy(); //filePathExisting
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   469
    }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   470
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   471
    delete m_value;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   472
}
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   473
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   474
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   475
// ----------------------------------------------------------------------------
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   476
// PrefElement::setValueL
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   477
// set value for a preference
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   478
//
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   479
//
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   480
// ----------------------------------------------------------------------------
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   481
void PrefElement::setValueL( const TDesC& value )
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   482
{
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   483
    if ( m_value ) {
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   484
        delete m_value;
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   485
    }
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   486
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   487
    m_value  = value.AllocL();
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   488
}
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   489
dd21522fd290 Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
parents:
diff changeset
   490