/*

* Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* which accompanies this distribution, and is available

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:    LandmarksUi Content File -    This class provides functionality for selecting either one or

*                multiple categories.

*

*/

#ifndef CLMKCATEGORYSELECTORDLG_H

#define CLMKCATEGORYSELECTORDLG_H

//  INCLUDES

#include <e32base.h>                    // CBase

#include <e32std.h>			//RArray and RPointerArray

#include <EPos_Landmarks.h>             // Lm typedefs, constants etc.

#include <EPos_CPosLandmarkDatabase.h>

// FORWARD DECLARATIONS

//class CPosLandmarkDatabase;

class CLmkDlgSelectorImplBase;

class MObjectProvider;

// For multiple database support

class TLmkItemIdDbCombiInfo;

// CLASS DECLARATION

/**

*  This is a dialog class, which is used to launch category selector dialog and

*  to get the selected category ids.It displays the categories present in landmarks

*  database,as a list.The dialog can be a single selector or multiple selector dialog,

*  depending upon argument passed by the client (in ExecuteLD function) at the time

*  when it is launched.Based on whether it is a single selector or multiple selector

*  dialog, user can select single category or multiple categories.

*/

class CLmkCategorySelectorDlg : public CBase

    {

    public:  // Constructors and destructor

        /**

        * This is a static function, which create and return an instance of this class.

        * Categories present in the landmark database, are shown in selector.

        *

        * @param [in] aShowEmptyCategories specifies whether categories without

        *            landmarks are shown or not

        * @leave Leaves with KErrNotSupported if framework functionality is not available.

        * @panic Panics with system-wide panic codes.

        * @return new instance of this class

        */

        IMPORT_C static CLmkCategorySelectorDlg* NewL(TBool aShowEmptyCategories = EFalse );

        /**

        * Destructor.

        */

        IMPORT_C ~CLmkCategorySelectorDlg();

    public: // New functions

        /**

        * This function sets the context - that is, the enclosing parent control - for this control.

        *

        * @param [in] aParent The parent object which is the context for the control.

        * @panic Panics with KLmkPanicNullMember, if the selector is not

        *        constructed properly.

        */

        IMPORT_C void SetMopParent( MObjectProvider* aParent );

        /**

        * This function launches the category selector dialog.Client use this function

        * to launch single category selector dialog.

        * This object is destroyed when this function returns or leaves.

        * @param [in/out] aSelected Passed as reference and when the function returns,

        *                contains the selected category id.

        * @leave Leaves with system-wide leave codes.

        * @panic Panics with KLmkPanicNullMember, if the selector is not constructed properly.

        * @return Returns non-zero if accepted, else zero.

        */

        IMPORT_C TInt ExecuteLD( TLmkItemIdDbCombiInfo& aSelected );

        /**

        * This function launches the category selector dialog.Client use this function

        * to launch multiple category selector dialog.

        * This object is destroyed when this function returns or leaves.

        * If the array(aSelectedItems) is passed with already filled cateogry ids, then

        * such categories will be shown as selected when the dialog is launched,but if

        * any of these ids do not exist in landmarks database,will be ignored.

        *

        * @param [in/out] aSelectedItems Passed as reference,either filled with category

        *                ids for pre-selection or an empty array.On return of the function

        *                contains the selected category ids.

        * @leave Leaves with system-wide leave codes.

        * @panic Panics with KLmkPanicNullMember, if the selector is not constructed properly.

        * @return Returns non-zero if accepted, else zero.

        */

        IMPORT_C TInt ExecuteLD( RArray<TLmkItemIdDbCombiInfo>& aSelectedItems );

    private:

        /**

        * C++ default constructor.

        * @return newly instantiated object

        */

        CLmkCategorySelectorDlg();

        /**

        * By default Symbian 2nd phase constructor is private.

        * @param aShowEmptyCategories

        */

        void ConstructL( TBool aShowEmptyCategories );

    private:    // Data

        // ETrue if executed in multiple item selector mode

        TBool iIsMultiSelector;

        ///Own: Search implementor object

        CLmkDlgSelectorImplBase* iSelector;

        //Own: Set to ETrue in destructor

        TBool* iDestroyedPtr;

        // Multiple database support

        RPointerArray <CPosLandmarkDatabase> iDbs;

    };

#endif      // CLMKCATEGORYSELECTORDLG_H

// End of File