examples/sfexamples/RockPaperScissorsGameSourceCode_S60/RPS/src/BluetoothDeviceDiscoverer.cpp

/*
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  may be used to endorse or promote products derived from this software
  without specific prior written permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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Description:  
*/ 


// INCLUDE FILES
#include <btextnotifiers.h>
#include "BluetoothDeviceDiscoverer.h"
#include "common.hrh"
/*
============================================================================
CBluetoothDeviceDiscoverer's two stage constructor
============================================================================
*/
CBluetoothDeviceDiscoverer* CBluetoothDeviceDiscoverer::NewL(MBluetoothDeviceDiscovererObserver& aObs)
        {
    CBluetoothDeviceDiscoverer* self = new (ELeave) CBluetoothDeviceDiscoverer(aObs);
    CleanupStack::PushL(self);
    self->ConstructL();
    CleanupStack::Pop();
    return self;
        }

/*
============================================================================
CBluetoothDeviceDiscoverer's second phase constructor 
============================================================================
*/
void CBluetoothDeviceDiscoverer::ConstructL()
        {
        //Create an RNotifier object, and connect it with RNotifier::Connect()
        User::LeaveIfError(iBTDevicesNotifier.Connect());       
        }

/*
============================================================================
CBluetoothDeviceDiscoverer's constructor 
============================================================================
*/
CBluetoothDeviceDiscoverer::CBluetoothDeviceDiscoverer(MBluetoothDeviceDiscovererObserver& aObs) :
        CActive(CActive::EPriorityStandard), iObserver(aObs)
        {
        CActiveScheduler::Add(this);
        }

/*
============================================================================
CBluetoothDeviceDiscoverer's destructor
============================================================================
*/
CBluetoothDeviceDiscoverer::~CBluetoothDeviceDiscoverer()
        {
        Cancel();
        //After using a RNotifier object we need to close it.   
        iBTDevicesNotifier.Close();
        }
        
/*
============================================================================
DoCancel is called as part of the active object's Cancel().
Cancel the notifier.
============================================================================
*/
void CBluetoothDeviceDiscoverer::DoCancel()
        {
        //If the user dismisses the RNotifier's dialog without selecting any devices then we call
        //RNotifier::CancelNotifier with the same dialog UID (KDeviceSelectionNotifierUid) we used
        //in RNotifier::StartNotifierAndGetResponse.
        iBTDevicesNotifier.CancelNotifier(KDeviceSelectionNotifierUid);
        }


/*
============================================================================
Displays the BT devices in range for the player to choose from
============================================================================
*/
void CBluetoothDeviceDiscoverer::DiscoverAndSelectDeviceL(const TBTDeviceSelectionParamsPckg& aSelectionFilter)
        {
        if(IsActive())
                {       
                User::Leave(KErrInUse);
                }
        else
                {               
                //We ask RNotifier to start the search for other BT devices in range. Seraching for BT devices is done
                //asynchronously by calling RNotifier::StartNotifierAndGetResponse. Application can filter the search
                //of BT devices by passing a TBTDeviceSelectionParams wrapped in a TBTDeviceSelectionParamsPckg
                //pckg buffer. In our example we passed the UID of the authorisation plug-in (KDeviceSelectionNotifierUid)
                //that invokes the BT device selection dialog, the device and/or service classes by which to filter
                //suitable remote devices (RPS's service class KRPS_BTServiceID), a Bluetooth address object
                //that on completion of the dialog will hold information about the device the user selected in
                //a packaged TBTDeviceResponseParams.
                iBTDevicesNotifier.StartNotifierAndGetResponse(iStatus, KDeviceSelectionNotifierUid, aSelectionFilter, iResponse);
                SetActive();
                }
        }

/*
============================================================================
Handles CBluetoothConnector's completion events
============================================================================
*/
void CBluetoothDeviceDiscoverer::RunL()
        {
        //We pass on to the engine the BT device address the user selected otherwise we pass on the error
        if(iStatus.Int() == KErrNone)
                {
                iObserver.OnDeviceDiscoveryComplete(iResponse);
                }
        else
                {       
                iObserver.OnDeviceDiscoveryErr(iStatus.Int());  
                }
        }

/*
============================================================================
Handles a leave occurring in the request completion event handler RunL().
Reports the error to the observer
============================================================================
*/
TInt CBluetoothDeviceDiscoverer::RunError(TInt aError)
        {
        iObserver.OnDeviceDiscoveryErr(aError);
        return KErrNone;
        }

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