/*
* 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 the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
* which accompanies this distribution, and is available
* at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:  Base class for Common File Dialogs.
*
*/


#ifndef CAKNCOMMONDIALOGSBASE_H
#define CAKNCOMMONDIALOGSBASE_H

// INCLUDES
#include <E32BASE.H>
#include <ConeResLoader.h>

// CONSTANTS

/**
* Enumerations for different dialogs. A dialog loads its default values
* (such as softkey texts and title) depending on its type.
*/
enum TCommonDialogType
    {
    ECFDDialogTypeNormal,
    ECFDDialogTypeSelect,
    ECFDDialogTypeSave,
    ECFDDialogTypeMove,
    ECFDDialogTypeBrowse,
    ECFDDialogTypeDefaultSetting, //Cannot be used in multi-drive
    ECFDDialogTypeCopy
    };

/**
* Text that is shown when Common File Dialogs panics.
*/
_LIT( KCFDPanicText, "CommonDialogs" );

/**
* Enumerations for Common File Dialog panics.
*/
enum TCFDPanics
    {
    ECFDPanicInvalidFilterType                      =  1,
    ECFDPanicInvalidFilterStyle                     =  2,
    ECFDPanicInvalidAttributeFilterDataLength       =  3,
    ECFDPanicInvalidAttributeFilterDataCount        =  4,
    ECFDPanicInvalidFileNameFilterDataLength        =  5,
    ECFDPanicInvalidFileNameFilterDataCount         =  6,
    ECFDPanicNoLocationStructures                   =  7,
    ECFDPanicRootPathNotDefined                     =  8,
    ECFDPanicNoPathForFileNamePromptDialog          =  9,
    ECFDPanicOutOfBounds                            = 10,
    ECFDPanicNullParameter                          = 11,
    ECFDPanicNoResourceDefined                      = 12,
    ECFDPanicTitleOrSoftkeyNotSet                   = 13
    };

// FORWARD DECLARATIONS
class CCoeEnv;

//  CLASS DEFINITION
/**
*  Base class for Common File Dialogs.
*  Can't be created without derivation because of the protected constructor.
*  Opens CFD's resource in BaseConstructL.
*
*  @lib CommonDialogs.lib
*  @since 1.2
*/
NONSHARABLE_CLASS(CAknCommonDialogsBase) : public CBase
    {
    public:     // Enumerations

        /**
        * Sometimes it is necessary to know if dialog was exited by
        * left softkey or selection key. This enumeration works as TBool,
        * ERightSoftkey is not true and other return values are.
        * For example, memory selection dialog and file selection dialog
        * return values of this enumeration.
        */
        enum TReturnKey
            {
            ERightSoftkey = EFalse,
            ELeftSoftkey,
            ESelectionKey
            };

    protected:  // Constructors and destructors

        CAknCommonDialogsBase();

        virtual ~CAknCommonDialogsBase();

        /**
        * Loads resource of Common File Dialogs on any language.
        */
        void BaseConstructL();

    protected:  // Data

        /**
        * Ref: Pointer to control environment.
        * Pointer is cached because using of CCoeEnv::Static() is slow.
        * For direct use for derived classes.
        */
        CCoeEnv* iCoeEnv;

    private:    // Data

        // Own: Loads resource file of Common File Dialogs on any language.
        RConeResourceLoader iResourceLoader;
    };

#endif // CAKNCOMMONDIALOGSBASE_H

// End of File