/*

* Copyright (c) 2002-2006 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Client side access to emergency call

*

*/

#ifndef RPhCltEmergencyCall_H

#define RPhCltEmergencyCall_H

//  INCLUDES

#include <e32std.h>

#include "phclttypes.h" 

#include "rphcltserver.h" 

/**

* Emergency number query mode

*/

enum TPhCltEmergencyNumberQueryMode

    {

    EPhCltEmergencyNumberQueryModeNormal = 0,  // Normal mode

    EPhCltEmergencyNumberQueryModeAdvanced,    // advanced mode

    EPhCltEmergencyNumberQueryModeNormalWriteback   // Same as "normal", but writes back emergency number

    };

// FORWARD DECLARATIONS

// CLASS DECLARATION

/**

*  Client side access to emergency call

*

*  @lib phoneclient.lib

*  @since Series60_1.0

*/

class RPhCltEmergencyCall : public RSubSessionBase

    {

    public:  // Constructors and destructor

        /**

        * C++ default constructor.

        */

        RPhCltEmergencyCall();

    public:  // New functions

        /**

        * Opens the subsession.

        *

        * @param aServer It is the session of which subsession this is.

        * @return Returns error code.

        */

        TInt Open( RPhCltServer& aServer );

        /**

         * Closes the subsession.

         */

        void Close();

    public:

       /**

        * Returns information whether the number specified was an emergency number.

        * 

        * @param aNumber Number to be queried. aNumber might contain prefix (SS code)

        *                and/or postfix (DTMF part).  

        *                The aNumber parameter should be a buffer and the 

        *                clients are provided with a typedef called 

        *                TPhCltEmergencyNumber, which is equivalent to a 

        *                TBuf< KPhCltEmergencyNumberSize > where 

        *                KPhCltEmergencyNumberSize is defined as 100. 

        *

        * @param aIsEmergencyNumber If ETrue, then the aNumber 

        *                           parameter included emergency number.

        * @return Returns error code of the success of the operation.

        */

        TInt IsEmergencyPhoneNumber(

            const TDesC& aNumber, 

            TBool& aIsEmergencyNumber );

        /**

        * Method can be used to check if the number specified contains 

        * a valid emergency number in the end of the number.

        * 

        * @param aNumber Number to be queried, matched emergency number 

        *                is returned in this parameter.

        *                The aNumber parameter should be a buffer and the 

        *                clients are provided with a typedef called 

        *                TPhCltTelephoneNumberwhich is equivalent to a 

        *                TBuf< KPhCltTelephoneNumberLength > where 

        *                KPhCltTelephoneNumberLength is defined as 100. 

        *             

        * @param aIsEmergencyNumber If ETrue, then the aNumber parameter 

        *                           was emergency number. 

        * @return Returns error code of the success of the operation.

        */

        TInt FindEmergencyPhoneNumber(

            TDes& aNumber, 

            TBool& aIsEmergencyNumber );

        /**

        * Initiates an emergency call.

        *

        * @param aReqStatus On return, KErrNone if the emergency call successfully reaches 

        *                   the connected state. If the call set-up fails, the function 

        *                   member will complete with an error.

        *

        * @param aNumber Emergency number to be dialed (optional).

        *                The aNumber parameter should be a buffer and the 

        *                clients are provided with a typedef called 

        *                TPhCltEmergencyNumber,which is equivalent to a 

        *                TBuf< KPhCltEmergencyNumberSize > where 

        *                KPhCltEmergencyNumberSize is defined as 100. 

        *

        *                If the aNumber parameter supplies an "empty" buffer 

        *                the call is created either dialing the default emergency 

        *                phone number or use the SET UP EMERGENCY request  

        *                that does not contain a dialling number.               

        *

        * @pre IsActive() returns EFalse, otherwise leaves with KErrInUse.

        */

        void DialEmergencyCall( TRequestStatus& aReqStatus, TDesC8& aNumber );

        /**

        * Cancels an emergency call.

        *

        */

        void CancelDialEmergencyCall();

        /**

        * Returns information whether the number specified was an emergency 

        * number and also returns the plain emergency number.

        * 

        * @param aNumber Number to be queried.aNumber might contain prefix (SS code)

        *                and/or postfix (DTMF part).

        *                The aNumber parameter should be a buffer and the 

        *                clients are provided with a typedef called 

        *                TPhCltEmergencyNumberwhich is equivalent to a 

        *                TBuf< KPhCltEmergencyNumberSize > where 

        *                KPhCltEmergencyNumberSize is defined as 100. 

        *

        * @param aMatchedEmergencyNumber Matched emergencynumber without prefix or 

        *                postfix is returned in this parameter. The aMatchedEmergencyNumber 

        *                parameter should be a buffer and the clients are

        *                provided with atypedef called TPhCltEmergencyNumber,

        *                which is equivalent to a TBuf< KPhCltEmergencyNumberSize > 

        *                where KPhCltEmergencyNumberSize is defined as 100.

        * 

        * @param aIsEmergencyNumber If ETrue, then the aNumber 

        *                           parameter included emergency number.

        *

        * @return Returns error code of the success of the operation.

        */

        TInt IsEmergencyPhoneNumber(

            const TDesC& aNumber,

            TDes& aMatchedEmergencyNumber, 

            TBool& aIsEmergencyNumber );                    

       private:            

        /**

         * Extract telephone number from string. If EFalse is returned

         * then aString does not contain valid emergency number

         * 

         * @param aString string from which those characters are removed.

         *

         * @return ETrue - aString can be emergency number and aString

         *                 contains a telephone number

         *         EFalse - aString cannot be emergency number and aString

         *                  does not contain a number that can be emergency number

         */

        TBool ExtractTelephoneNumber( TDes& aString );

        /**

        * Finds start of dtmf string in string.

        *

        * @param   aString      Telephone number

        *

        * @return  Index where dtmf string starts or KErrNotFound if no

        * dtmf found.

        *

        */

        TInt FindStartOfDtmfString( const TDesC& aString );

        /**

        * Removes CLIR ss code from beginning of the string if CLIR is

        * found from string.

        *

        * @param    aString Telephone number

        */

        void RemoveCLIR( TDes& aString );

        /**

         * Removes DTMF string from string.

         * 

         * @param aString Telephone number.

         */

        void RemoveDTMF( TDes& aString );

        /**

        * Executes checks to given phone number to find out if it is a valid 

        * emergency number. 

        *

        * @param    aString             Telephone number

        * @param    aIsEmergencyNumber  If ETrue, then the aNumber parameter 

        *                               was a valid emergency number.

        *

        * @return Returns error code of the success of the operation.

        *

        */

        TInt ValidateNumber( TDes& aString, TBool& aIsEmergencyNumber, 

                            const TBool aWriteEmergencyNumBack );

    };

#endif // RPhCltEmergencyCall_H

// End of File