/*

* Copyright (c) 2002-2007 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:  Dialog used to selection target memory.

*

*/

#ifndef C_AKNMEMORYSELECTIONDIALOG_H

#define C_AKNMEMORYSELECTIONDIALOG_H

#include <CAknCommonDialogsBase.h>

#include <badesca.h> // CDesCArray

class CAknMemorySelectionModel;

class CAknMemorySelectionEventHandler;

class MAknMemorySelectionObserver;

class TDriveInfo;

class CAknIconArray;

/**

 *  A class that launches a pop-up dialog for memory selection.

 *

 *  @lib CommonDialogs.lib

 *  @since S60 1.2

 */

NONSHARABLE_CLASS(CAknMemorySelectionDialog) : public CAknCommonDialogsBase

    {

public:

// Enumerations

    /**

     * @Deprecated: This only works with fixed C: and E: drives.

     * Enumerations for memory items in listbox .

     */

    enum TMemory

        {

        EPhoneMemory = 0,   // C:

        EMemoryCard,        // E:

        EMemoryCount        // must remain last one

        };

// Constructors and destructors

    /**

     * Static constructor.

     *

     * @since S60 3.2

     * @param aDialogType Defines the type of the dialog in order to read

     *        correct default settings for title and softkeys from resource.

     * @param aShowUnavailableDrives Defines whether unavailable or corrupted

     *        drives are shown in memory selection list or not.

     * @return Returns a pointer to an instance of itself.

     */

    IMPORT_C static CAknMemorySelectionDialog* NewL(

        TCommonDialogType aDialogType,

        TBool aShowUnavailableDrives );

    /**

     * Static constructor.

     *

     * @since S60 3.2

     * @param aDialogType Defines the type of the dialog in order to read

     *        correct default settings for title and softkeys from resource.

     * @param aResourceId A resource id (MEMORYSELECTIONDIALOG).

     * @param aShowUnavailableDrives Defines whether unavailable or corrupted

     *        drives are shown in memory selection list or not.

     * @return Returns a pointer to an instance of itself.

     */

    IMPORT_C static CAknMemorySelectionDialog* NewL(

        TCommonDialogType aDialogType,

        TInt aResourceId,

        TBool aShowUnavailableDrives );

    /**

     * Static constructor.

     *

     * @since S60 3.2

     * @param aDialogType Defines the type of the dialog in order to read

     *        correct default settings for title and softkeys from resource.

     * @param aResourceId A resource id (MEMORYSELECTIONDIALOG).

     * @param aShowUnavailableDrives Defines whether unavailable or corrupted

     *        drives are shown in memory selection list or not.

     * @param aIncludedMedias bit flag definition of which medias are

     *        included in the dialog. See TMemoryTypes.

     * @return Returns a pointer to an instance of itself.

     */

    IMPORT_C static CAknMemorySelectionDialog* NewL(

        TCommonDialogType aDialogType,

        TInt aResourceId,

        TBool aShowUnavailableDrives,

        TInt aIncludedMedias );

    IMPORT_C virtual ~CAknMemorySelectionDialog();

// New functions

    /**

     * Sets an observer which is asked if the selected item can be selected.

     *

     * @param aObserver A pointer to an observer.

     */

    IMPORT_C void SetObserver( MAknMemorySelectionObserver* aObserver );

    /**

     * Sets title for the dialog.

     *

     * @param aText Title text.

     */

    IMPORT_C void SetTitleL( const TDesC& aText );

    /**

     * Sets the text used for left softkey.

     *

     * @param aText The text used for left softkey.

     */

    IMPORT_C void SetLeftSoftkeyL( const TDesC& aText );

    /**

     * Sets the text used for right softkey.

     *

     * @param aText The text used for right softkey.

     */

    IMPORT_C void SetRightSoftkeyL( const TDesC& aText );

    /**

     * Gets an item from memory selection dialog at specified index.

     *

     * @param aIndex Index to the item in the memory selection list.

     * @param aItem A reference to a descriptor where the item is stored.

     */

    IMPORT_C void GetItem( TInt aIndex, TDes& aItem );

    /**

     * Gets the location paths of a memory.

     *

     * @param aSelectedMemory The memory that was selected.

     * @param aRootPath A pointer to a descriptor where the root path

     *        of the selected memory is stored. Must have KMaxFileName space.

     *        Set to NULL to ignore.

     * @param aDefaultFolder A pointer to a descriptor where the default folder

     *        of the selected memory is stored. Must have KMaxFileName space.

     *        Set to NULL to ignore.

     */

    IMPORT_C void GetMemories( TMemory aSelectedMemory,

                               TDes* aRootPath,

                               TDes* aDefaultFolder );

    /**

     * Executes the memory selection dialog. Virtual to allow derivation.

     *

     * @param aSelectedMemory A reference to a memory (TMemory).

     *        If one of the memories is selected, the selected memory is

     *        stored to the parameter.

     * @return Returns true if user has selected an item and false

     *         if user hits cancel.

     */

    IMPORT_C virtual TReturnKey ExecuteL( TMemory& aSelectedMemory );

    /**

     * Executes the memory selection dialog. Virtual to allow derivation.

     *

     * @param aSelectedMemory A reference to a memory (TMemory).

     *        If one of the memories is selected, the selected memory is

     *        stored to the parameter.

     * @param aRootPath A pointer to a descriptor where the root path

     *        of the selected memory is stored.

     * @param aDefaultFolder A pointer to a descriptor where the default folder

     *        of the selected memory is stored.

     * @return Returns true if user has selected an item and false

     *         if user hits cancel.

     */

    IMPORT_C virtual TReturnKey ExecuteL(

        TMemory& aSelectedMemory,

        TDes* aRootPath, TDes* aDefaultFolder );

    /**

     * A static method that launches a memory selection dialog.

     * @see RunL()

     */

    IMPORT_C static TBool RunDlgLD(

        TMemory& aSelectedMemory,

        MAknMemorySelectionObserver* aObserver = NULL );

    /**

     * A static method that launches a memory selection dialog.

     * @see RunL()

     */

    IMPORT_C static TBool RunDlgLD(

        TMemory& aSelectedMemory,

        const TDesC& aTitle,

        MAknMemorySelectionObserver* aObserver = NULL );

    /**

     * A static method that launches a memory selection dialog.

     * @see RunL()

     */

    IMPORT_C static TBool RunDlgLD(

        TMemory& aSelectedMemory,

        TInt aResourceId,

        TDes* aRootPath = NULL, TDes* aDefaultFolder = NULL,

        MAknMemorySelectionObserver* aObserver = NULL );

    /**

     * Returns the number of items in list box array.

     * Not exported, for CFD internal use only.

     *

     * @return Returns the number of items in list box array.

     */

    TInt NumberOfItems() const;

    /**

     * Maps drive paths according to selected listbox item. This function is

     * valid for dynamic drives. The prerequisite for this function is that

     * iRootPathArray and additionally iDefaultFolderArray indexes map

     * correctly to iModel's listbox items.

     *

     * @since S60 3.2

     * @param aLbxIndex Index to the selected listbox item.

     * @param aRootPath A pointer to a descriptor where the root path of the

     *        selected drive will be stored. Must have KMaxFileName space.

     *        Set to NULL to ignore.

     * @param aDefaultFolder A pointer to a descriptor where the default folder

     *        of the selected drive will be stored. Must have

     *        KMaxFileNamespace.

     *        Set to NULL to ignore.

     * @return Return error code

     *         KErrNone The drive is found in internal drive list

     *         KErrNotFound The drive is not visible to user or does not exist

     */

    TInt GetDrivePaths( TInt aLbxIndex,

                        TDes* aRootPath,

                        TDes* aDefaultFolder );

protected:

// Constructors and destructors

    CAknMemorySelectionDialog( TCommonDialogType aDialogType );

    /**

     * Constructs class from resource

     *

     * @param aResourceId ID of the resource. Can be zero.

     * @param aShowUnavailableDrives Defines whether unavailable or corrupted

     *        drives are shown in memory selection list or not.

     */

    virtual void ConstructFromResourceL(

        TInt aResourceId,

        TBool aShowUnavailableDrives );

    /**

     * Constructs class from resource

     *

     * @param aResourceId ID of the resource. Can be zero.

     * @param aShowUnavailableDrives Defines whether unavailable or corrupted

     *        drives are shown in memory selection list or not.

     * @param aIncludedMedias bit flag definition of which medias are

     *        included in the dialog. See TMemoryTypes.

     */

    virtual void ConstructFromResourceL(

        TInt aResourceId,

        TBool aShowUnavailableDrives,

        TInt aIncludedMedias );

private:

//  New functions

    /**

     * A static method for launching a memory selection dialog.

     * Creates, constructs, runs and deletes a memory selection dialog with

     * different parameters.

     *

     * @param aResourceId An id of a resource.

     * @param aSelectedMemory A reference to a memory described in ExecuteL.

     * @param aRootPath A pointer to a descriptor where the root path

     *        of the selected memory is stored.

     * @param aDefaultFolder A pointer to a descriptor where the default folder

     *        of the selected memory is stored.

     * @param aTitle A title for memory selection dialog.

     * @param aObserver An observer which is asked if the selected item

     *        can be selected. Implemented in application..

     */

    static TBool RunL(

        TInt aResourceId,

        TMemory& aSelectedMemory,

        TDes* aRootPath,

        TDes* aDefaultFolder,

        const TDesC& aTitle,

        MAknMemorySelectionObserver* aObserver );

    /**

     * Sets id to a default CFD resource depending on dialog type.

     */

    void SetResourceId( TInt& aResourceId, TCommonDialogType aDialogType )

        const;

    /**

     * Reads settings from resource.

     *

     * @param aResourceId Resource's ID to be read.

     * @param aResourceDefined If user defines the resource.

     */

    void ReadFromResourceL( TInt aResourceId, TBool aResourceDefined );

    /**

     * Loads icons into the icon-array.

     * @param aIconArray Array of which to append the loaded icons.

     * @param aDoubleStyle Is the dialog doublestyle.

     */

    void LoadIconsL( CAknIconArray* aIconArray, TBool aDoubleStyle );

    /**

     * Loads default root and default paths of phone memory & memory card

     */

    void GetSystemPathsL();

protected: // Data

    // Own: Dialog type

    TCommonDialogType iDialogType;

    // Own: Model

    CAknMemorySelectionModel* iModel;

    // Own: Event handler

    CAknMemorySelectionEventHandler* iEventHandler;

    // Ref: Observer

    MAknMemorySelectionObserver* iObserver;

    // Own: Title

    HBufC* iTitle;

    // Own: Left softkey text

    HBufC* iLeftSoftkey;

    // Own: Right softkey text

    HBufC* iRightSoftkey;

    // Own: Root path array

    // iDynamicDrivesEnabled indicates the content of this array.

    CDesCArrayFlat iRootPathArray;

    // Own: Default folder array

    CDesCArrayFlat iDefaultFolderArray;

    // Own: ETrue if dynamic drive reading is enabled

    //      EFalse if drives are static (C: and E:).

    // This affects iRootPathArray and iDefaultFolderArray content and

    // ordering.

    TBool iDynamicDrivesEnabled;

    TInt iIncludedMedias;

    };

#endif // C_AKNMEMORYSELECTIONDIALOG_H