/*

* Copyright (c) 2005 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:    Action class for handling location related commands

 *

*/

#ifndef __LOCATIONUI_H__

#define __LOCATIONUI_H__

// INCLUDES

#include <e32base.h>

#include <AknLaunchAppService.h>

#include <AknServerApp.h>				// MAknServerAppExitObserver

#include <mnprovider.h>

#include <calencommandhandler.h>

#include <calennotificationhandler.h>   // MCalenNotificationHandler

#include "calenselectionobserver.h"

#include "calencurrentlocationobserver.h"

#include "calencurrentlocationacquisition.h"

// FORWARD DECLARATIONS

class CCalenController;

class CMnMapView;

class CCalenLocationActiveSelector;

class CCalenGlobalData;

class CPosLandmark;

class TPosition;

// CLASS DECLARATION

/**

 * CCalenLocationUi encapsulates location/Map related behavior in Calendar application.

 *

 */

NONSHARABLE_CLASS( CCalenLocationUi ) : public CBase,

	                                    public MCalenNotificationHandler,

	                                    public MCalenCommandHandler,

	                                    public MAknServerAppExitObserver,

	                                    public MCalenSelectionObserver,

	                                    public MCalenCurrentLocationObserver

    {

    public: // public API

        /**

         * Symbian 1st phase construction

         * @param aController Reference of the controller that owns the editui

         */

        IMPORT_C static CCalenLocationUi* NewL( CCalenController& aController );

        /**

         * Destructor

         */

        virtual ~CCalenLocationUi();

        void MapClosed();

    public:  // MCalenCommandHandler

        /**

         * From MCalenCommandHandler.

         * Handles key presses.

         * 

         * @param aCommand The command Id of the key.

         */

        TBool HandleCommandL( const TCalenCommand& aCommand );

        /**

         * From MCalenCommandHandler.

         * Allows extending this API without breaking BC.

         * 

         * @param aExtensionUid specifies

         * @return extension of the requested type

         */

        TAny* CalenCommandHandlerExtensionL( TUid aExtensionUid );

    public:  // from MCalenNotificationHandler

        /** 

         * Handle notifications

         * @param aNotification Nofication to be handled

         */

        void HandleNotification(const TCalenNotification aNotification );

    public:  // from MAknServerAppExitObserver

      	/**

      	* Handle the exit of a connected server app.

      	* @param aReason The reason that the server application exited.

	    * This will either be an error code, or the command id that caused

	    * the server app to exit.

	    */

        void HandleServerAppExit(TInt aReason);

    public:		// From MCalenSelectionObserver

    	/**

    	* Handles user selection for a location on the map.

    	* @param aMapView  Map View object through which map is launched

    	*		 aError    Error code if any generated from the maps

    	*/

    	void HandleSelectionCompletedL( CMnMapView& aMapView, TInt aError );

    public:		// From MCalenCurrentLocationObserver

    	/**

    	* Callback function that gets called when current locaiton

    	* async request to get current location is complete

    	*/

    	void NotifyCurrentLocationL( );

    	/**

    	* Callback function that gets called if there is any error

    	* while fetching coordinates for current location

    	* @param errorCode	Error code 

    	*/

    	void NotifyErrorL(const TInt errorCode);

    private: // own methods

        /**

         * C++ constructor

         * @param aController Reference to the controller that owns the caleneditui

         */

        CCalenLocationUi( CCalenController& aController );

        /**

         * Symbian 2nd phase constructor

         */

        void ConstructL();

        /**

        * Function to make request for current locaiton coordinates

        */

        void RequestCurrenLocationL();

        /**

        * Issues asynchronous request to launch the map with coords of current location 

        * for user selection. It uses LocationSelector active object to listen to the 

        * user selection.

        * @param aPosition	Current position

        */

        void LaunchMapL(TPosition& aPosition);

        /**

        * Issues asynchronous request to launch the map with default coords for user selection

        * It uses LocationSelector active object to listen to the user selection

        */

        void LaunchMapL();

        /**

        * Issues synchronous request to show a particular location on the map

        */

        void ShowLocationOnMapL();

        /**

        * Returns the currently available map providers in the system

        * @param aServicesNeeded  List of services needed from the Map provider

        * @return Map Provider object

        */

        CMnProvider* GetFirstProviderL( CMnProvider::TServices aServicesNeeded );

        /**

        * Function to query user whether to replace or keep existing location

        * @param aLocaitonName  Location name to be prompted to the user

        */

        TInt ShowLocationReplaceNoticeL(TPtrC aLocaitonName);

        /**

        * Stores the locaiton details of currently focusses entry in Day/Event Viewer 

        * into Agenda Server

        * @param landmark  LandMark object

        */

        void StoreLocationInfoL(CPosLandmark* landmark);

        /**

        * Function to query user whether to append or replace the exisitng location details

        * @return User response

        */

        TInt ShowLocationAppendOrReplaceL();

        /**

        * Displays "Address Updated" transient notice to the user

        * @return None

        **/

        void ShowAddressUpdatedNoticeL();

		/**

		* Function to query user to define a location as location field is empty when "Show locaiton"

		* hard key is pressed.

		* @return 	User response

		**/

    private: // data

    	CCalenController&  iController;

    	CCalenGlobalData* iGlobalData;

    	CMnProvider* iProvider;

    	CMnMapView*  iMapView;

    	CCalenLocationActiveSelector* iLocationSelector;

    	CCalenCurrentLocationAcquisition* iCurrLocAcquisition;

    	TBool isRequestPending;	

    	TBool isGetLocationAndSave; // When requested from Views

    	TBool isReplaceLocation; // When requested from Views

    	TPosition iCurrPosition;

    	TBool isCurrLocAvailable;

    	HBufC* iLocationText;

    };

#endif /* __LOCATIONUI_H__ */