/*

 * Copyright (c) 2004 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:    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