examples/Base/FeatMngrExample/FeatureChecker/src/FeatureChecker.cpp

/*
Copyright (c) 2008-2010 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.

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modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this
  list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
* Neither the name of Nokia Corporation nor the names of its contributors
  may be used to endorse or promote products derived from this software
  without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Description:  
*/


#include "FeatureChecker.h"
#include <e32cons.h>

void CFeatureChecker::ConstructL()
        {
        iFeatNotifier = CFeatureNotifier::NewL(*this);
        }

CFeatureChecker* CFeatureChecker::NewL()
        {
        CFeatureChecker* self=new(ELeave)CFeatureChecker();
        CleanupStack::PushL(self);
        self->ConstructL();
        CleanupStack::Pop(self);
        return self;
        }

CFeatureChecker::~CFeatureChecker()
        {
        delete iFeatNotifier;
        }

void CFeatureChecker::NotifyFeatureL()
        {
        RFeatureUidArray featArray;
        CleanupClosePushL(featArray);
        TUid uidFeature;

        //Number of feature UIDs which are subscribed to for notification.
        const TInt KNumFeaturesforNotification(10);

        //Base feature UID for which notification requests are made. This is the same UID range which 
        //the user can use when adding features to the FeatMngrExample process.
        TUid KFeatureUidforNotification = {0x12000000};
        
        //Append the UIDs to featArray.
        for( int k=0; k<=KNumFeaturesforNotification; k++)
                {
                uidFeature.iUid = KFeatureUidforNotification.iUid + k;
                featArray.Append(uidFeature);
                }
        
        //Request notification for user defined features.
        User::LeaveIfError(iFeatNotifier->NotifyRequest(featArray));
        CleanupStack::PopAndDestroy(&featArray);
        }

void CFeatureChecker::HandleNotifyError(TInt /*err*/)
        {
        }

void CFeatureChecker::HandleNotifyChange(TFeatureChangeType aType, TFeatureEntry /*aFeature*/)
        {
        const TInt KFeatureChangeTypeMaxSize(45);
        TBuf<KFeatureChangeTypeMaxSize> changetype;
        switch(aType)
                {
                case EFeatureNoChange: 
                        _LIT(KNoChange, "Feature status not changed");
                        changetype.Copy(KNoChange);
                        break;
                case EFeatureStatusUpdated :
                        _LIT(KStatusUpdated, "Feature status changed to enabled or disabled");
                        changetype.Copy(KStatusUpdated);
                        break;
                case EFeatureDataUpdated: 
                        _LIT(KDataUpdated, "Feature data changed");
                        changetype.Copy(KDataUpdated);
                        break;
                case EFeatureStatusDataUpdated: 
                        //not used in the current version.
                        _LIT(KStatusDataUpdated, "Feature status and data changed");
                        changetype.Copy(KStatusDataUpdated);
                        break;
                case EFeatureRediscover: 
                        //not used in the current version.
                        _LIT(KFeatureRediscover, "Complex change occurred, reload all features");
                        changetype.Copy(KFeatureRediscover);
                        break;
                case EFeatureFeatureCreated:
                        _LIT(KFeatureCreated, "New feature has been added to the system");
                        changetype.Copy(KFeatureCreated);
                        break;
                case EFeatureFeatureDeleted: 
                        _LIT(KFeatureDeleted, "Feature has been deleted");
                        changetype.Copy(KFeatureDeleted);
                        break;
                }
        //Print the change type as an infoprint.
        User::InfoPrint(changetype);
        }

static void MainL()
        {
        CActiveScheduler* scheduler = new (ELeave) CActiveScheduler();
        CleanupStack::PushL(scheduler);
        CActiveScheduler::Install(scheduler);
        
        CFeatureChecker* featChecker = CFeatureChecker::NewL();
        CleanupStack::PushL(featChecker);
        //Issue feature change notification request.
        featChecker->NotifyFeatureL();
        CActiveScheduler::Start();
        
        CleanupStack::PopAndDestroy(featChecker);
        CleanupStack::PopAndDestroy(scheduler);
        }

extern TInt E32Main()
        {
        // Create cleanup stack
        __UHEAP_MARK;
        CTrapCleanup* cleanup = CTrapCleanup::New();
        if(cleanup == NULL)
                {
                return KErrNoMemory;
                }
        // Run application code inside TRAP harness.
        TRAPD(mainError, MainL());
        if(mainError != KErrNone)
                {
                _LIT(KUserPanic,"Failed to complete");  
                User::Panic(KUserPanic, mainError);
                }
        delete cleanup;
        __UHEAP_MARKEND;
        return KErrNone;
        }

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